/* ── Tokens ─────────────────────────────────────────────────────────────── */
:root {
    --color-primary:       #4e91fc;
    --color-primary-hover: #3a7be0;
    --color-primary-bg:    #eef4ff;
    --color-bg:            #f5f7fa;
    --color-surface:       #ffffff;
    --color-surface-2:     #f0f3f7;
    --color-border:        #e2e6ed;
    --color-text:          #1a1d23;
    --color-text-2:        #4b5563;
    --color-text-3:        #9ca3af;
    --color-success:       #22c55e;
    --color-error:         #ef4444;
    --color-warning:       #f59e0b;
    --color-badge-bg:      #f3f4f6;
    --color-badge-text:    #6b7280;

    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  20px;
    --radius-full: 9999px;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:  0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.05);

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    --nav-height: 60px;
    --container-width: 1200px;
    --container-pad: var(--space-4);
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-primary:    #5a9dff;
        --color-primary-bg: #1a2540;
        --color-bg:         #0f1117;
        --color-surface:    #1c1f26;
        --color-surface-2:  #252831;
        --color-border:     #2e323c;
        --color-text:       #e8eaf0;
        --color-text-2:     #9ca3af;
        --color-text-3:     #6b7280;
        --color-badge-bg:   #252831;
        --color-badge-text: #9ca3af;
        --shadow-sm:  0 1px 3px rgba(0,0,0,.3);
        --shadow-md:  0 4px 12px rgba(0,0,0,.4);
        --shadow-lg:  0 10px 30px rgba(0,0,0,.5);
    }
}

/* ── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

img, svg { display: block; max-width: 100%; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }

ul[role="list"], ol[role="list"] { list-style: none; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

@media (min-width: 640px)  { :root { --container-pad: var(--space-6); } }
@media (min-width: 1024px) { :root { --container-pad: var(--space-8); } }

/* ── Site Header / Nav ──────────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    height: var(--nav-height);
}

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.site-header__brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.site-header__brand:hover { text-decoration: none; opacity: .88; }

.brand-logo {
    display: block;
    height: 38px;
    width: auto;
}

/* Desktop nav */
.site-nav {
    flex: 1;
}

.site-nav__list {
    display: flex;
    gap: var(--space-1);
    list-style: none;
    align-items: center;
}

.site-nav__item {
    position: relative;
}

.site-nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: .875rem;
    font-weight: 500;
    color: var(--color-text-2);
    transition: color .15s, background .15s;
    text-decoration: none;
    white-space: nowrap;
    cursor: default;
    user-select: none;
}

.site-nav__link:hover,
.site-nav__link--active {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    text-decoration: none;
}

.site-nav__arrow {
    flex-shrink: 0;
    transition: transform .2s;
    opacity: .6;
}
.site-nav__item--group:hover .site-nav__arrow,
.site-nav__item--group:focus-within .site-nav__arrow {
    transform: rotate(180deg);
    opacity: 1;
}

/* Dropdown — subcategory list */
.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    list-style: none;
    z-index: 200;
}

.site-nav__item--group:hover .dropdown,
.site-nav__item--group:focus-within .dropdown {
    display: block;
}

.dropdown__link {
    display: block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: .875rem;
    color: var(--color-text-2);
    text-decoration: none;
    transition: color .15s, background .15s;
}

.dropdown__link:hover,
.dropdown__link--active {
    color: var(--color-primary);
    background: var(--color-primary-bg);
    text-decoration: none;
}

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
}

.nav-toggle__bar {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform .25s, opacity .25s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 767px) {
    .nav-toggle { display: flex; }

    .site-nav {
        display: none;
        position: fixed;
        inset: var(--nav-height) 0 0;
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
        padding: var(--space-4);
        overflow-y: auto;
        z-index: 99;
    }

    .site-nav.is-open { display: block; }

    .site-nav__list { flex-direction: column; align-items: stretch; }

    .site-nav__link {
        font-size: 1rem;
        padding: var(--space-3) var(--space-4);
        cursor: default;
        font-weight: 600;
        color: var(--color-text);
    }
    .site-nav__link:hover { background: none; color: var(--color-text); }

    .site-nav__arrow { display: none; }

    .dropdown {
        display: block;
        position: static;
        box-shadow: none;
        border: none;
        background: var(--color-surface-2);
        margin: 0 0 var(--space-2) var(--space-4);
        border-radius: var(--radius-md);
        padding: var(--space-1);
    }
}

/* ── Hero ───────────────────────────────────────────────────────────────── */
.hero {
    padding: var(--space-16) 0 var(--space-12);
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-bg) 60%);
    border-bottom: 1px solid var(--color-border);
}

.hero__inner { max-width: 680px; }

.hero__title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--color-text);
    margin-bottom: var(--space-4);
    line-height: 1.1;
}

.hero__lead {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--color-text-2);
    max-width: 560px;
}

/* ── Tool Grid ──────────────────────────────────────────────────────────── */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

/* ── Tool Card ──────────────────────────────────────────────────────────── */
.tool-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s, border-color .2s, transform .2s;
    overflow: hidden;
}

.tool-card:not(.tool-card--planned):hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.tool-card--planned {
    opacity: .75;
}

.tool-card__inner {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5) var(--space-5);
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.tool-card__inner:hover { text-decoration: none; }

.tool-card__body { flex: 1; min-width: 0; }

.tool-card__name {
    font-size: .95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.tool-card__desc {
    font-size: .8125rem;
    color: var(--color-text-2);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card__arrow {
    font-size: 1.1rem;
    color: var(--color-text-3);
    flex-shrink: 0;
    transition: color .15s, transform .15s;
}

.tool-card:hover .tool-card__arrow {
    color: var(--color-primary);
    transform: translateX(3px);
}

.tool-card__badge {
    flex-shrink: 0;
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    padding: 2px var(--space-2);
    background: var(--color-badge-bg);
    color: var(--color-badge-text);
    border-radius: var(--radius-full);
}

/* ── Category Block (home) ──────────────────────────────────────────────── */
.home-tools { padding: var(--space-12) 0; }

/* ── Search bar ─────────────────────────────────────────────────────────── */
.search-bar {
    margin-bottom: var(--space-8);
}

.search-bar__input {
    width: 100%;
    max-width: 560px;
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    outline: none;
    box-shadow: var(--shadow-sm);
    transition: border-color .15s, box-shadow .15s;
    display: block;
}

.search-bar__input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(78,145,252,.15);
}

.search-bar__input::placeholder { color: var(--color-text-3); }

/* ── Category badge (visible during home search) ────────────────────────── */
.tool-card__category {
    display: none;
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.home-tools--searching .tool-card__category { display: block; }

.category-block { margin-bottom: var(--space-12); }

.category-block__header {
    margin-bottom: var(--space-6);
}

.category-block__title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--space-1);
}

.category-block__title a {
    color: var(--color-text);
    text-decoration: none;
}

.category-block__title a:hover {
    color: var(--color-primary);
}

.category-block__desc {
    font-size: .9rem;
    color: var(--color-text-2);
}

/* ── Page Header (category page) ───────────────────────────────────────── */
.page-header {
    padding: var(--space-10) 0 var(--space-8);
}

.page-header__title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: var(--space-3);
}

.page-header__desc {
    font-size: 1.05rem;
    color: var(--color-text-2);
    max-width: 520px;
}

/* ── Breadcrumb ─────────────────────────────────────────────────────────── */
.breadcrumb { padding: var(--space-4) 0 0; }

.breadcrumb__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    align-items: center;
    list-style: none;
    font-size: .8125rem;
    color: var(--color-text-3);
}

.breadcrumb__item { display: flex; align-items: center; gap: var(--space-2); }

.breadcrumb__item + .breadcrumb__item::before {
    content: '/';
    color: var(--color-border);
}

.breadcrumb__link {
    color: var(--color-text-2);
    text-decoration: none;
}

.breadcrumb__link:hover { color: var(--color-primary); }

.breadcrumb__item--current { color: var(--color-text-2); }

/* ── Tool Page ──────────────────────────────────────────────────────────── */
.tool-page { padding-bottom: var(--space-16); }

.tool-header {
    padding: var(--space-8) 0 var(--space-6);
}

.tool-header__title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    letter-spacing: -.025em;
    margin-bottom: var(--space-3);
}

.tool-header__desc {
    font-size: 1rem;
    color: var(--color-text-2);
    max-width: 600px;
}

.tool-body { margin-bottom: var(--space-12); }

/* ── Tool Interface ─────────────────────────────────────────────────────── */
.tool-interface {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.tool-label {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--color-text-2);
    margin-bottom: var(--space-2);
    text-transform: uppercase;
    letter-spacing: .06em;
}

.tool-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-mono);
    font-size: .85rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.tool-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(78,145,252,.15);
}

.tool-upload {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.upload-name {
    font-size: .8125rem;
    color: var(--color-text-3);
}

.tool-fieldset {
    border: none;
    padding: 0;
}

.tool-fieldset legend { margin-bottom: var(--space-3); }

.tool-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    align-items: flex-end;
}

.tool-row { margin-bottom: var(--space-4); }
.tool-row:last-child { margin-bottom: 0; }

.tool-actions {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-top: var(--space-5);
}

.tool-error {
    padding: var(--space-3) var(--space-4);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: .875rem;
}

/* ── Tool Info (SEO section) ────────────────────────────────────────────── */
.tool-info {
    margin-top: var(--space-10);
    max-width: 720px;
}

.tool-info h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    margin-top: var(--space-8);
    color: var(--color-text);
}

.tool-info h2:first-child { margin-top: 0; }

.tool-info p, .tool-info li {
    font-size: .9375rem;
    color: var(--color-text-2);
    line-height: 1.7;
    margin-bottom: var(--space-3);
}

.tool-info ol, .tool-info ul {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}

.tool-info li { margin-bottom: var(--space-2); }

/* ── Form Elements ──────────────────────────────────────────────────────── */
.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: .875rem;
    color: var(--color-text-2);
    cursor: pointer;
    margin-bottom: var(--space-2);
}

.radio-label input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    height: 40px;
    font-family: var(--font-sans);
    font-size: .875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background .15s, border-color .15s, box-shadow .15s, transform .1s;
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:active { transform: scale(.98); }

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(78,145,252,.35);
    text-decoration: none;
    color: #fff;
}

.btn--ghost {
    background: var(--color-surface-2);
    color: var(--color-text-2);
    border-color: var(--color-border);
}

.btn--ghost:hover {
    background: var(--color-border);
    color: var(--color-text);
    text-decoration: none;
}

.btn--sm { height: 32px; font-size: .8125rem; padding: var(--space-1) var(--space-3); }

/* ── Utilities ──────────────────────────────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.empty-state {
    padding: var(--space-10);
    text-align: center;
    color: var(--color-text-3);
    font-size: .95rem;
}

/* ── Error Page ─────────────────────────────────────────────────────────── */
.error-page {
    text-align: center;
    padding: var(--space-16) 0;
}

.error-page__code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: var(--space-4);
}

.error-page__msg {
    font-size: 1.2rem;
    color: var(--color-text-2);
    margin-bottom: var(--space-8);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-6) 0;
    background: var(--color-surface);
}

.site-footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.site-footer__copy {
    font-size: .8125rem;
    color: var(--color-text-3);
}

.site-footer__nav {
    display: flex;
    gap: var(--space-5);
}

.site-footer__nav a {
    font-size: .8125rem;
    color: var(--color-text-3);
    text-decoration: none;
}

/* ── Phase 2 — Tool layout primitives ──────────────────────────────────── */
.tool-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

@media (max-width: 700px) {
    .tool-cols { grid-template-columns: 1fr; }
}

.tool-pane { display: flex; flex-direction: column; }

.tool-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.tool-output-header .tool-label { margin-bottom: 0; }

.tool-textarea--output {
    background: var(--color-surface-2);
    color: var(--color-text-2);
    cursor: default;
}

.tool-success {
    padding: var(--space-3) var(--space-4);
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: var(--radius-md);
    color: var(--color-success);
    font-size: .875rem;
}

/* ── Tool input / select ────────────────────────────────────────────────── */
.tool-input,
.tool-select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-sans);
    font-size: .875rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
    height: 40px;
}

.tool-input:focus,
.tool-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(78,145,252,.15);
}

.tool-input--sm { width: auto; min-width: 100px; }

/* ── Markdown preview split ─────────────────────────────────────────────── */
.tool-interface--wide { max-width: none; }

.md-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    align-items: start;
}

@media (max-width: 700px) {
    .md-split { grid-template-columns: 1fr; }
}

.md-preview {
    min-height: 200px;
    max-height: 520px;
    overflow-y: auto;
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: .9375rem;
    line-height: 1.7;
    color: var(--color-text);
}

.md-preview h1,.md-preview h2,.md-preview h3 { margin: .75em 0 .35em; font-weight: 700; }
.md-preview h1 { font-size: 1.5rem; }
.md-preview h2 { font-size: 1.2rem; }
.md-preview h3 { font-size: 1rem; }
.md-preview p  { margin-bottom: .75em; }
.md-preview ul,.md-preview ol { padding-left: 1.5em; margin-bottom: .75em; }
.md-preview li { margin-bottom: .25em; }
.md-preview code { font-family: var(--font-mono); font-size: .85em; background: var(--color-surface-2); padding: .1em .35em; border-radius: 3px; }
.md-preview pre { background: var(--color-surface-2); border-radius: var(--radius-md); padding: var(--space-4); overflow-x: auto; margin-bottom: .75em; }
.md-preview pre code { background: none; padding: 0; }
.md-preview a { color: var(--color-primary); }
.md-preview blockquote { border-left: 3px solid var(--color-border); margin: 0 0 .75em; padding-left: 1em; color: var(--color-text-2); }
.md-preview table { border-collapse: collapse; width: 100%; margin-bottom: .75em; }
.md-preview th,.md-preview td { border: 1px solid var(--color-border); padding: .4em .7em; text-align: left; }
.md-preview th { background: var(--color-surface-2); font-weight: 600; }
.md-preview img { max-width: 100%; }
.md-preview hr { border: none; border-top: 1px solid var(--color-border); margin: 1.25em 0; }

/* ── Conversion table (file-size-converter) ─────────────────────────────── */
.conv-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

.conv-table th,
.conv-table td {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    text-align: left;
}

.conv-table th {
    background: var(--color-surface-2);
    font-weight: 600;
    color: var(--color-text-2);
    font-size: .8125rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.conv-table td:last-child { font-family: var(--font-mono); }

.conv-table__highlight td {
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-weight: 600;
}

/* ── Phase 3 — Developer Tools ──────────────────────────────────────────── */

/* Color converter */
.color-preview {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.color-swatch {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.color-picker-input {
    width: 52px;
    height: 52px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: 2px;
    background: var(--color-surface);
}

.color-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

@media (max-width: 560px) { .color-grid { grid-template-columns: 1fr; } }

.color-field__row {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}

.color-field__row .tool-input { flex: 1; font-family: var(--font-mono); }

/* Hash / base tables */
.hash-value {
    font-family: var(--font-mono);
    font-size: .78rem;
    word-break: break-all;
}

/* Password generator */
.pw-display {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: .04em;
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 54px;
    word-break: break-all;
    color: var(--color-text);
}

.strength-bar {
    height: 8px;
    background: var(--color-surface-2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.strength-bar__fill {
    height: 100%;
    width: 0%;
    border-radius: var(--radius-full);
    transition: width .3s, background .3s;
}

/* Regex tester */
.regex-output {
    min-height: 200px;
    max-height: 420px;
    overflow-y: auto;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-mono);
    font-size: .85rem;
    line-height: 1.7;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--color-text);
}

.regex-match {
    background: rgba(78, 145, 252, .25);
    border-radius: 2px;
    outline: 1px solid rgba(78, 145, 252, .5);
}

.regex-groups { display: flex; flex-direction: column; gap: var(--space-2); }

.regex-group-row {
    font-size: .8125rem;
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    align-items: center;
}

.regex-group-num {
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-text-3);
}

/* JWT decoder */
.jwt-sections {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-4);
}

@media (max-width: 700px) { .jwt-sections { grid-template-columns: 1fr; } }

.jwt-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.jwt-card__label {
    padding: var(--space-2) var(--space-3);
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
}

.jwt-card--header  .jwt-card__label { background: #fef3c7; color: #92400e; }
.jwt-card--payload .jwt-card__label { background: #dcfce7; color: #166534; }
.jwt-card--signature .jwt-card__label { background: #ede9fe; color: #6d28d9; }

@media (prefers-color-scheme: dark) {
    .jwt-card--header  .jwt-card__label { background: #451a03; color: #fcd34d; }
    .jwt-card--payload .jwt-card__label { background: #052e16; color: #86efac; }
    .jwt-card--signature .jwt-card__label { background: #2e1065; color: #c4b5fd; }
}

.jwt-card__body {
    margin: 0;
    padding: var(--space-3);
    font-family: var(--font-mono);
    font-size: .78rem;
    line-height: 1.6;
    background: var(--color-bg);
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--color-text);
}

.jwt-card__expiry {
    padding: var(--space-2) var(--space-3);
    font-size: .8rem;
    font-weight: 600;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

/* Timestamp converter */
.ts-result {
    margin-top: var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.ts-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: var(--space-2) var(--space-4);
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    font-size: .875rem;
}

.ts-row:last-child { border-bottom: none; }

.ts-row span { color: var(--color-text-2); flex-shrink: 0; }

.ts-row strong { font-family: var(--font-mono); font-weight: 600; word-break: break-all; text-align: right; }

/* QR code */
.qr-output {
    display: flex;
    justify-content: center;
    padding: var(--space-6);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

/* CSS gradient generator */
.gradient-preview {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: linear-gradient(90deg, #4e91fc 0%, #a855f7 100%);
}

.gradient-stops { display: flex; flex-direction: column; gap: var(--space-3); }

.gradient-stop {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.gradient-stop input[type="color"] {
    width: 44px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    padding: 2px;
    background: var(--color-surface);
}

/* Cron explainer */
.cron-explanation {
    padding: var(--space-4) var(--space-5);
    background: var(--color-primary-bg);
    border: 1px solid rgba(78,145,252,.2);
    border-radius: var(--radius-md);
    font-size: .9375rem;
    font-weight: 500;
    color: var(--color-text);
}

.cron-next-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.cron-next-list li {
    font-family: var(--font-mono);
    font-size: .875rem;
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface-2);
    border-radius: var(--radius-md);
    color: var(--color-text);
}

.site-footer__nav a:hover { color: var(--color-primary); }

/* ── Phase 4 — Text Tools ───────────────────────────────────────────────── */

/* Word counter stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

@media (max-width: 500px) { .stats-grid { grid-template-columns: 1fr 1fr; } }

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-4) var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    gap: var(--space-1);
}

.stat-card--wide { grid-column: span 3; }

@media (max-width: 500px) { .stat-card--wide { grid-column: span 2; } }

.stat-card__val {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--color-primary);
    line-height: 1;
}

.stat-card__lbl {
    font-size: .75rem;
    color: var(--color-text-3);
    text-transform: uppercase;
    letter-spacing: .06em;
}

/* Text diff */
.diff-output {
    margin-top: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: auto;
    max-height: 480px;
    font-family: var(--font-mono);
    font-size: .8125rem;
    line-height: 1.65;
}

.diff-line {
    padding: 2px var(--space-4);
    white-space: pre-wrap;
    word-break: break-word;
}

.diff-line--add { background: rgba(34,197,94,.12); color: var(--color-success); }
.diff-line--del { background: rgba(239,68,68,.10);  color: var(--color-error);   }
.diff-line--eq  { color: var(--color-text-3); }

@media (prefers-color-scheme: dark) {
    .diff-line--add { background: rgba(34,197,94,.15); }
    .diff-line--del { background: rgba(239,68,68,.15); }
}

/* ASCII art output */
.ascii-output {
    font-family: var(--font-mono);
    font-size: .75rem;
    line-height: 1.3;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    white-space: pre;
    overflow-x: auto;
    min-height: 120px;
    color: var(--color-text);
}

/* Percentage calculator blocks */
.pct-block {
    padding: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    background: var(--color-surface);
}

.pct-block__title {
    font-size: .875rem;
    font-weight: 600;
    color: var(--color-text-2);
    text-transform: uppercase;
    letter-spacing: .05em;
    margin: 0 0 var(--space-3);
}

/* ── Phase 5 — Image Tools ──────────────────────────────────────────────── */

.image-drop {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-10) var(--space-6);
    text-align: center;
    cursor: pointer;
    transition: border-color .2s, background .2s;
}

.image-drop--over,
.image-drop:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
}

.image-drop__input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.image-drop__label {
    font-size: .9375rem;
    color: var(--color-text-2);
    margin: 0;
    pointer-events: none;
}

.image-drop__label .link {
    color: var(--color-primary);
    cursor: pointer;
    pointer-events: auto;
}

.image-preview {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    min-height: 100px;
}

.image-preview img {
    display: block;
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
}

/* Image cropper */
.cropper-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: crosshair;
}

.cropper-container canvas {
    display: block;
    max-width: 100%;
}

.crop-rect {
    position: absolute;
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 0 9999px rgba(0,0,0,.45);
    pointer-events: none;
}

/* ── Phase 6 — Office & Productivity ───────────────────────────────────── */

/* Calculator */
.calc-wrapper {
    max-width: 340px;
    margin: 0 auto;
}

.calc-display {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-6);
    margin-bottom: var(--space-4);
    text-align: right;
    min-height: 90px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: var(--space-1);
}

.calc-display__expr {
    font-size: .8125rem;
    color: var(--color-text-3);
    font-family: var(--font-mono);
    min-height: 1.2em;
}

.calc-display__val {
    font-size: 2rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    font-family: var(--font-mono);
    color: var(--color-text);
    word-break: break-all;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
}

.calc-btn {
    padding: var(--space-4);
    font-size: 1.125rem;
    font-weight: 500;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: background .15s, transform .1s;
    font-family: inherit;
}

.calc-btn:hover  { background: var(--color-surface-2); }
.calc-btn:active { transform: scale(.95); }

.calc-btn--fn  { background: var(--color-surface-2); color: var(--color-text-2); }
.calc-btn--op  { background: rgba(78,145,252,.1); color: var(--color-primary); font-weight: 600; }
.calc-btn--eq  { background: var(--color-primary); color: #fff; font-weight: 700; }
.calc-btn--eq:hover { background: var(--color-primary-dark, #2563eb); }
.calc-btn--wide { grid-column: span 2; text-align: left; padding-left: var(--space-5); }

/* BMI bar */
.bmi-bar { position: relative; }

.bmi-bar__track {
    height: 10px;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, #3b82f6 0%, #22c55e 40%, #f59e0b 66%, #ef4444 100%);
    position: relative;
}

.bmi-bar__marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-text);
    border: 2px solid var(--color-bg);
    box-shadow: var(--shadow-sm);
    transition: left .4s;
}

.bmi-bar__labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
    font-size: .6875rem;
    color: var(--color-text-3);
    text-align: center;
}

.bmi-bar__labels span { flex: 1; }

/* Pomodoro timer */
.pomodoro {
    max-width: 360px;
    margin: 0 auto;
    text-align: center;
}

.pomodoro__phase {
    font-size: .875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--color-text-2);
    margin-bottom: var(--space-2);
}

.pomodoro__display {
    font-size: 3.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    font-family: var(--font-mono);
    color: var(--color-text);
    line-height: 1;
    margin-bottom: var(--space-4);
}

.pomodoro__progress {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-5);
}

.pomodoro__ring { width: 120px; height: 120px; transform: rotate(-90deg); }
.pomodoro__ring-bg   { fill: none; stroke: var(--color-surface-2); stroke-width: 6; }
.pomodoro__ring-fill {
    fill: none;
    stroke: var(--color-primary);
    stroke-width: 6;
    stroke-linecap: round;
    transition: stroke-dashoffset .5s linear;
}

.pomodoro__controls { display: flex; gap: var(--space-3); justify-content: center; }
.pomodoro__sessions { margin-top: var(--space-4); font-size: .875rem; color: var(--color-text-3); }
.pomodoro__settings { border-top: 1px solid var(--color-border); padding-top: var(--space-5); }

.btn--lg { padding: var(--space-4) var(--space-8); font-size: 1.0625rem; }

/* To-do list */
.todo-add {
    display: flex;
    gap: var(--space-3);
}

.todo-add .tool-input { flex: 1; }

.todo-list {
    list-style: none;
    padding: 0;
    margin: var(--space-4) 0 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.todo-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: opacity .2s;
}

.todo-item--done { opacity: .55; }
.todo-item--done .todo-item__text { text-decoration: line-through; }

.todo-item__check {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: .8rem;
    color: var(--color-success);
    font-weight: 700;
    transition: border-color .15s, background .15s;
}

.todo-item--done .todo-item__check {
    background: var(--color-success);
    border-color: var(--color-success);
    color: #fff;
}

.todo-item__text {
    flex: 1;
    font-size: .9375rem;
    color: var(--color-text);
}

.todo-item__del {
    background: none;
    border: none;
    color: var(--color-text-3);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    padding: 0 var(--space-1);
    flex-shrink: 0;
    transition: color .15s;
}

.todo-item__del:hover { color: var(--color-error); }

.todo-filter.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Invoice generator */
.invoice-section {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.invoice-section:last-of-type { border-bottom: none; }

.invoice-section__title {
    font-size: .8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--color-text-3);
    margin: 0 0 var(--space-4);
}

.inv-items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

.inv-items-table thead tr {
    display: flex;
    gap: var(--space-2);
    padding: 0 var(--space-2) var(--space-2);
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--color-text-3);
    border-bottom: 1px solid var(--color-border);
}

.inv-items-table tbody tr {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

.inv-items-table td,
.inv-items-table th { display: block; }

.inv-totals {
    display: inline-flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 280px;
}

.inv-total-row {
    display: flex;
    justify-content: space-between;
    gap: var(--space-6);
    font-size: .9375rem;
    align-items: center;
}

.inv-total-row--total {
    font-size: 1.125rem;
    font-weight: 700;
    border-top: 2px solid var(--color-text);
    padding-top: var(--space-3);
    margin-top: var(--space-2);
}

/* Print styles for invoice */
@media print {
    .site-nav,
    .site-footer,
    .tool-info,
    .tool-actions,
    .invoice-section:last-of-type button,
    #invResetBtn,
    #invPrintBtn,
    #invAddLine { display: none !important; }

    body { background: white; color: black; }
    .tool-interface { box-shadow: none; border: none; padding: 0; }
    .inv-items-table thead tr,
    .inv-items-table tbody tr { border-color: #ccc; }
}

/* ── Phase 7 — Sport & Fitness ──────────────────────────────────────────────── */

.sport-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}

.sport-table th,
.sport-table td {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    text-align: left;
    vertical-align: middle;
}

.sport-table th {
    background: var(--color-surface-2);
    font-weight: 600;
    color: var(--color-text-2);
    font-size: .8125rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    white-space: nowrap;
}

.sport-table__highlight td {
    background: var(--color-primary-bg);
    color: var(--color-primary);
    font-weight: 600;
}

.zone-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

/* Mode tabs (running pace, training paces, etc.) */
.pace-mode,
.swim-mode,
.tp-mode,
.vma-tab-panel,
.ftp-test-panel { padding-bottom: var(--space-2); }

/* ── Phase 8 — Performance & PWA ───────────────────────────────────────────── */

/* Offline banner (shown by SW when offline) — hidden by default */
.offline-banner {
    display: none;
    background: var(--color-warning, #f59e0b);
    color: #1c1917;
    text-align: center;
    padding: var(--space-2) var(--space-4);
    font-size: .875rem;
    font-weight: 600;
}

/* ── Finance table ───────────────────────────────────────────────────────── */
.finance-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}
.finance-table th,
.finance-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--color-border);
    text-align: right;
}
.finance-table th:first-child,
.finance-table td:first-child { text-align: left; }
.finance-table thead th { background: var(--color-surface-2); font-weight: 600; }

/* ── Contrast checker preview ────────────────────────────────────────────── */
.cc-preview {
    padding: 20px 24px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: 8px;
    transition: background .2s, color .2s;
}
.cc-preview__normal { margin: 0 0 8px; font-size: 1rem; }
.cc-preview__large  { margin: 0; font-size: 1.5rem; font-weight: 700; }

/* ── OG preview cards ────────────────────────────────────────────────────── */
.og-tab-panel { max-width: 540px; }

/* Google */
.og-google-card { padding: 12px 16px; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-surface); }
.og-google__site  { font-size: .8rem; color: #202124; margin-bottom: 2px; }
.og-google__title { font-size: 1.1rem; color: #1a0dab; font-weight: 500; margin-bottom: 4px; }
.og-google__desc  { font-size: .875rem; color: #4d5156; }

/* Twitter */
.og-twitter-card { border: 1px solid var(--color-border); border-radius: 12px; overflow: hidden; background: var(--color-surface); }
.og-twitter-card__img  { height: 200px; background: var(--color-surface-2); }
.og-twitter-card__body { padding: 12px; }
.og-twitter-card__title { font-weight: 700; margin-bottom: 4px; }
.og-twitter-card__desc  { font-size: .875rem; color: var(--color-muted); margin-bottom: 6px; }
.og-twitter-card__site  { font-size: .8rem; color: var(--color-muted); }

/* Facebook / LinkedIn */
.og-fb-card,
.og-li-card { border: 1px solid var(--color-border); border-radius: 4px; overflow: hidden; background: var(--color-surface); }
.og-fb-card__img,
.og-li-card__img  { height: 200px; background: var(--color-surface-2); }
.og-fb-card__body { padding: 10px 12px; background: #f2f3f5; }
.og-fb-card__site { font-size: .7rem; color: #606770; text-transform: uppercase; margin-bottom: 4px; }
.og-fb-card__title { font-weight: 700; margin-bottom: 2px; }
.og-fb-card__desc  { font-size: .875rem; color: #606770; }
.og-li-card__body  { padding: 10px 12px; }
.og-li-card__title { font-weight: 700; margin-bottom: 2px; }
.og-li-card__site  { font-size: .8rem; color: var(--color-muted); }

/* Active OG tab */
.og-tab-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ── tool-hint ────────────────────────────────────────────────────────────── */
.tool-hint {
    display: block;
    font-size: .78rem;
    color: var(--color-muted);
    margin-top: 4px;
}

/* ── Phase 12 — Webperf & SEO ───────────────────────────────────────────── */

/* SERP preview */
.serp-preview-wrap { margin-top: 24px; }
.serp-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px 20px;
    max-width: 600px;
    font-family: Arial, sans-serif;
}
.serp-card--mobile { max-width: 412px; }
.serp-site-line { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.serp-favicon { font-size: 16px; width: 18px; height: 18px; display: flex; align-items: center; }
.serp-site-info { display: flex; flex-direction: column; font-size: .875rem; }
.serp-site-name { color: #202124; font-weight: 500; }
.serp-breadcrumb { color: #4d5156; font-size: .8rem; }
.serp-menu-dots { margin-left: auto; background: none; border: none; cursor: pointer; color: #70757a; font-size: 1.25rem; }
.serp-title { font-size: 1.25rem; color: #1a0dab; cursor: pointer; line-height: 1.3; margin-bottom: 4px; }
.serp-card--mobile .serp-title { font-size: 1rem; }
.serp-desc { font-size: .875rem; color: #4d5156; line-height: 1.58; }
.serp-warn { color: var(--color-warning, #f59e0b); margin-left: 8px; font-size: .8rem; }
@media (prefers-color-scheme: dark) {
    .serp-card { background: #1e2026; border-color: #3a3d44; }
    .serp-site-name { color: #e8eaed; }
    .serp-breadcrumb { color: #bdc1c6; }
    .serp-title { color: #8ab4f8; }
    .serp-desc { color: #bdc1c6; }
}

/* Schema generator */
.schema-fields { margin-top: 4px; }
.schema-error { color: var(--color-error, #ef4444); background: #fef2f2; border: 1px solid #fca5a5;
    border-radius: 6px; padding: 10px 14px; font-size: .875rem; }
.faq-item, .bc-item { margin-bottom: 8px; }

/* CSS/JS minifier two-column grid */
.minifier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .minifier-grid { grid-template-columns: 1fr; } }

/* Sitemap validator */
.smv-issue-list { display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.smv-issue { padding: 8px 12px; border-radius: 6px; font-size: .875rem; }
.smv-issue--error   { background: #fef2f2; color: #b91c1c; border-left: 3px solid #ef4444; }
.smv-issue--warning { background: #fffbeb; color: #92400e; border-left: 3px solid #f59e0b; }
.smv-ok { padding: 10px 14px; border-radius: 6px; background: #f0fdf4; color: #166534;
    border-left: 3px solid #22c55e; font-weight: 600; }
@media (prefers-color-scheme: dark) {
    .smv-issue--error   { background: #2d1515; color: #fca5a5; }
    .smv-issue--warning { background: #2d2208; color: #fcd34d; }
    .smv-ok             { background: #14290f; color: #86efac; }
}

/* Sitemap generator */
.smg-defaults { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; }
.tool-details { margin-top: 4px; font-size: .875rem; }
.tool-details summary { cursor: pointer; color: var(--color-primary); }
.tool-details summary::-webkit-details-marker { color: var(--color-muted); }

/* Cache-Control builder */
.cc-directives { display: flex; flex-direction: column; gap: 4px; border: 1px solid var(--color-border);
    border-radius: 8px; padding: 16px; }
.cc-section-title { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em;
    color: var(--color-muted); margin-top: 4px; }
.cc-item { display: flex; align-items: center; gap: 8px; padding: 4px 0; cursor: pointer; font-size: .9rem; }
.cc-item input[type="checkbox"] { flex-shrink: 0; }
.cc-val { padding: 4px 8px !important; height: 32px; }
.cc-output-wrap { display: flex; gap: 8px; align-items: center; }
.cc-output-wrap .tool-input { flex: 1; font-family: var(--font-mono, monospace); }
.cc-exp-list { display: flex; flex-direction: column; gap: 6px; }
.cc-exp-item { font-size: .875rem; padding: 6px 10px; background: var(--color-surface-alt, var(--color-surface-2));
    border-radius: 6px; }

/* Heading checker */
.hc-tree { background: var(--color-surface-2); border-radius: 8px; padding: 16px; font-family: var(--font-mono, monospace); font-size: .875rem; }
.hc-node { padding: 3px 0; display: flex; align-items: baseline; gap: 8px; }
.hc-tag { font-weight: 700; color: var(--color-primary); min-width: 28px; }
.hc-text { color: var(--color-text); }
.hc-empty { color: var(--color-muted); font-style: italic; }

/* Keyword density */
.kd-options { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.kd-table-wrap { overflow-x: auto; }

/* tool-mono utility */
.tool-mono { font-family: var(--font-mono, 'Courier New', monospace); font-size: .85rem; }

/* ── Phase 13 — Kitchen & Cooking ───────────────────────────────────────── */

/* Kitchen timer cards */
.kt-timers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-top: 8px; }
.kt-timer-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.kt-timer-header { display: flex; gap: 8px; align-items: center; }
.kt-label { flex: 1; }
.kt-remove { flex-shrink: 0; }
.kt-timer-inputs { display: flex; align-items: center; gap: 4px; }
.kt-time-input { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.kt-time-input label { font-size: .75rem; color: var(--color-muted); }
.kt-time-input input { width: 60px; text-align: center; }
.kt-time-sep { font-size: 1.5rem; font-weight: 700; color: var(--color-muted); padding: 0 2px; align-self: center; }
.kt-presets { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.kt-preset-label { font-size: .75rem; color: var(--color-muted); }
.kt-display-wrap { display: flex; align-items: center; justify-content: center; position: relative; }
.kt-ring { transform: rotate(-90deg); }
.kt-ring-bg   { stroke: var(--color-border); }
.kt-ring-prog { stroke: var(--color-primary); transition: stroke-dashoffset .5s linear; }
.kt-display { position: absolute; font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.kt-controls { display: flex; gap: 8px; justify-content: center; }
.kt-done { animation: kt-flash .5s ease 3; }
@keyframes kt-flash { 0%,100% { border-color: var(--color-border); } 50% { border-color: var(--color-primary); box-shadow: 0 0 12px var(--color-primary-bg); } }

/* Cooking time */
.ct-doneness { transition: background .15s, color .15s; }
.ct-doneness.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* Recipe scaler */
.rs-ingredient-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.rs-ingredient-row [type="number"] { max-width: 90px; }

/* Nutritional values */
.nv-search-wrap { position: relative; }
.nv-suggestions { position: absolute; top: 100%; left: 0; right: 0; background: var(--color-surface);
    border: 1px solid var(--color-border); border-radius: 0 0 8px 8px; z-index: 10; box-shadow: 0 4px 12px rgba(0,0,0,.1); }
.nv-suggestion-item { padding: 8px 14px; cursor: pointer; font-size: .9rem; }
.nv-suggestion-item:hover { background: var(--color-primary-bg); }

/* Cooking units */
.cu-panel { margin-top: 8px; }
.cu-converter-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.cu-eq { font-size: 1.5rem; color: var(--color-muted); }
.cu-results { display: flex; flex-wrap: wrap; gap: 8px; }
.cu-result-item { background: var(--color-surface-2); border-radius: 6px; padding: 6px 12px; font-size: .9rem; }

/* Egg timer */
.et-doneness-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 600px) { .et-doneness-grid { grid-template-columns: repeat(2, 1fr); } }
.et-doneness-btn { background: var(--color-surface); border: 2px solid var(--color-border); border-radius: 10px;
    padding: 14px 8px; cursor: pointer; text-align: center; transition: border-color .15s, background .15s; }
.et-doneness-btn:hover  { border-color: var(--color-primary-hover); }
.et-doneness-btn.active { border-color: var(--color-primary); background: var(--color-primary-bg); }
.et-egg-icon   { font-size: 2rem; margin-bottom: 4px; }
.et-doneness-name { font-weight: 700; font-size: .9rem; }
.et-doneness-desc { font-size: .75rem; color: var(--color-muted); }
.et-doneness-time { font-size: .85rem; color: var(--color-primary); font-weight: 600; margin-top: 4px; }
.et-timer-section { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-top: 16px; }
.et-display-wrap { position: relative; display: flex; align-items: center; justify-content: center; }
.et-controls { display: flex; gap: 12px; }

/* Baking substitutions */
.bs-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-top: 16px; }
.bs-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 10px; padding: 16px; }
.bs-card-title { font-size: .85rem; color: var(--color-muted); margin-bottom: 12px; }
.bs-sub { padding: 10px 0; border-bottom: 1px solid var(--color-border); }
.bs-sub:last-child { border-bottom: none; padding-bottom: 0; }
.bs-sub-name  { font-weight: 600; margin-bottom: 2px; }
.bs-sub-ratio { font-size: .875rem; color: var(--color-primary); margin-bottom: 2px; }
.bs-sub-note  { font-size: .8rem; color: var(--color-muted); margin-bottom: 4px; }
.bs-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.bs-tag { font-size: .7rem; padding: 2px 7px; border-radius: 99px; font-weight: 600; }
.bs-tag--vegan  { background: #dcfce7; color: #166534; }
.bs-tag--dairy  { background: #fef3c7; color: #92400e; }
.bs-tag--gluten { background: #ede9fe; color: #5b21b6; }
@media (prefers-color-scheme: dark) {
    .bs-tag--vegan  { background: #14290f; color: #86efac; }
    .bs-tag--dairy  { background: #2d1f08; color: #fcd34d; }
    .bs-tag--gluten { background: #1e1635; color: #c4b5fd; }
}

/* ── Dark mode manual overrides ([data-theme] beats prefers-color-scheme) ── */
[data-theme="dark"] {
    --color-primary:    #5a9dff;
    --color-primary-bg: #1a2540;
    --color-bg:         #0f1117;
    --color-surface:    #1c1f26;
    --color-surface-2:  #252831;
    --color-border:     #2e323c;
    --color-text:       #e8eaf0;
    --color-text-2:     #9ca3af;
    --color-text-3:     #6b7280;
    --color-badge-bg:   #252831;
    --color-badge-text: #9ca3af;
    --shadow-sm:  0 1px 3px rgba(0,0,0,.3);
    --shadow-md:  0 4px 12px rgba(0,0,0,.4);
    --shadow-lg:  0 10px 30px rgba(0,0,0,.5);
}
[data-theme="light"] {
    --color-primary:       #4e91fc;
    --color-primary-hover: #3a7be0;
    --color-primary-bg:    #eef4ff;
    --color-bg:            #f5f7fa;
    --color-surface:       #ffffff;
    --color-surface-2:     #f0f3f7;
    --color-border:        #e2e6ed;
    --color-text:          #1a1d23;
    --color-text-2:        #4b5563;
    --color-text-3:        #9ca3af;
    --color-badge-bg:      #f3f4f6;
    --color-badge-text:    #6b7280;
    --shadow-sm:  0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:  0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.05);
}
[data-theme="dark"] .bs-tag--vegan  { background: #14290f; color: #86efac; }
[data-theme="dark"] .bs-tag--dairy  { background: #2d1f08; color: #fcd34d; }
[data-theme="dark"] .bs-tag--gluten { background: #1e1635; color: #c4b5fd; }

/* ── Theme toggle button ─────────────────────────────────────────────────── */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1rem;
    transition: background .15s, border-color .15s;
    flex-shrink: 0;
}
.theme-toggle:hover { background: var(--color-surface-2); border-color: var(--color-primary); }
.theme-toggle__icon--sun  { display: none; }
.theme-toggle__icon--moon { display: inline; }
@media (prefers-color-scheme: dark) {
    .theme-toggle__icon--sun  { display: inline; }
    .theme-toggle__icon--moon { display: none; }
}
[data-theme="dark"] .theme-toggle__icon--sun  { display: inline; }
[data-theme="dark"] .theme-toggle__icon--moon { display: none; }
[data-theme="light"] .theme-toggle__icon--sun  { display: none; }
[data-theme="light"] .theme-toggle__icon--moon { display: inline; }

/* ── Nav actions wrapper ─────────────────────────────────────────────────── */
.nav-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; flex-shrink: 0; }
.nav-actions .nav-toggle { margin-left: 0; }

/* ── Language switcher ───────────────────────────────────────────────────── */
.lang-switcher { position: relative; }
.lang-switcher__toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--color-text-2);
    letter-spacing: .03em;
    transition: border-color .15s, color .15s, background .15s;
}
.lang-switcher__toggle:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-surface-2); }
.lang-switcher__toggle[aria-expanded="true"] { border-color: var(--color-primary); color: var(--color-primary); }
.lang-switcher__toggle[aria-expanded="true"] .site-nav__arrow { transform: rotate(180deg); }
.lang-switcher__dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    min-width: 130px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--space-1) 0;
    margin: 0;
    z-index: 200;
}
.lang-switcher__dropdown[aria-expanded="true"],
.lang-switcher.is-open .lang-switcher__dropdown { display: block; }
.lang-switcher__option {
    display: block;
    padding: 8px 14px;
    font-size: .875rem;
    color: var(--color-text-2);
    text-decoration: none;
    transition: background .1s, color .1s;
}
.lang-switcher__option:hover { background: var(--color-surface-2); color: var(--color-text); }
.lang-switcher__option--active { color: var(--color-primary); font-weight: 600; }

/* ── Tool header top row (title + fav button) ────────────────────────────── */
.tool-header__top { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-3); }
.tool-header__top .tool-header__title { margin-bottom: 0; }

/* ── Favorite button ─────────────────────────────────────────────────────── */
.fav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--color-text-3);
    transition: color .15s, border-color .15s, background .15s;
    flex-shrink: 0;
}
.fav-btn:hover { border-color: var(--color-warning); color: var(--color-warning); }
.fav-btn--active { border-color: var(--color-warning); color: var(--color-warning); background: rgba(245,158,11,.08); }
.fav-btn__icon { line-height: 1; }

/* ── Home quick sections (favorites + recently used) ─────────────────────── */
.home-quick-section { margin-bottom: var(--space-10); }
.home-quick-section__title { font-size: 1.1rem; font-weight: 700; margin-bottom: var(--space-4); }
.home-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-3);
}
.quick-card {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    text-decoration: none;
    color: var(--color-text);
    transition: border-color .15s, box-shadow .15s;
}
.quick-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-sm); text-decoration: none; }
.quick-card__cat { display: block; font-size: .7rem; color: var(--color-primary); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 2px; }
.quick-card__name { display: block; font-size: .875rem; font-weight: 600; }

/* ── Stat shorthands (.stat-value / .stat-label used in new views) ─────── */
.stat-value { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { font-size: .78rem; color: var(--color-text-2); margin-top: 2px; }

/* ── Image drop zone (color palette upload) ──────────────────────────────── */
.image-drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    cursor: pointer;
    transition: border-color .15s, background .15s;
    text-align: center;
    position: relative;
}
.image-drop-zone:hover,
.image-drop-zone--over { border-color: var(--color-primary); background: var(--color-primary-bg); }
.image-drop-zone__input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.image-drop-zone__label { pointer-events: none; font-size: .9rem; color: var(--color-text-2); }

/* ── Timezone converter ──────────────────────────────────────────────────── */
.tz-zone-row { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); }
.tz-results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--space-3); margin-top: var(--space-2); }
.tz-result-card { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); }
.tz-result-card--source { border-color: var(--color-primary); background: var(--color-primary-bg); }
.tz-result-tz { font-size: .78rem; font-weight: 600; color: var(--color-primary); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .04em; }
.tz-result-time { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.tz-result-offset { font-size: .8rem; color: var(--color-text-2); }

/* ── Currency converter ──────────────────────────────────────────────────── */
.cc-result-display { font-size: 2rem; font-weight: 800; color: var(--color-primary); letter-spacing: -.02em; margin-bottom: var(--space-1); }

/* ── Color palette extractor ─────────────────────────────────────────────── */
.cp-palette { display: flex; gap: 4px; border-radius: var(--radius-md); overflow: hidden; height: 48px; width: 100%; }
.cp-palette > div { flex: 1; min-width: 24px; cursor: pointer; transition: flex .2s; }
.cp-palette > div:hover { flex: 2; }
.cp-swatch-sm { display: inline-block; width: 20px; height: 20px; border-radius: 4px; border: 1px solid rgba(0,0,0,.1); vertical-align: middle; cursor: pointer; }

/* ── Sleep cycle calculator ──────────────────────────────────────────────── */
.sc-times-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); margin-top: var(--space-2); }
@media (max-width: 500px) { .sc-times-grid { grid-template-columns: 1fr; } }
.sc-time-card { background: var(--color-surface-2); border: 2px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); text-align: center; }
.sc-time-card--best { border-color: var(--color-primary); background: var(--color-primary-bg); }
.sc-time-main { font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; margin-bottom: 4px; }
.sc-time-label { font-size: .78rem; color: var(--color-text-2); }
.sc-time-badge {
    display: inline-block;
    margin-top: var(--space-2);
    background: var(--color-primary);
    color: #fff;
    font-size: .7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* ── Find & replace two-column row ──────────────────────────────────────── */
.fr-search-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }

/* ── Embroidery thread converter ─────────────────────────────────────────── */
.ec-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-3); margin-top: var(--space-3); }
.ec-card { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; }
.ec-swatch { height: 56px; flex-shrink: 0; }
.ec-name { font-weight: 600; font-size: .88rem; padding: var(--space-2) var(--space-3) var(--space-1); }
.ec-codes { font-size: .78rem; color: var(--color-text-2); padding: 0 var(--space-3) var(--space-3); line-height: 1.6; }
.ec-brand { font-weight: 700; color: var(--color-text-2); text-transform: uppercase; font-size: .7rem; letter-spacing: .04em; margin-right: 2px; }

/* ── Row & stitch counter ─────────────────────────────────────────────────── */
.rc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-4); margin-top: var(--space-4); }
.rc-card { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.rc-card-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.rc-name { font-weight: 600; font-size: .95rem; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rc-value { font-size: 2.5rem; font-weight: 800; letter-spacing: -.04em; color: var(--color-primary); text-align: center; line-height: 1; padding: var(--space-2) 0; }
.rc-card-footer { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.rc-target { font-size: .8rem; color: var(--color-text-2); }
.rc-progress-wrap { height: 6px; background: var(--color-border); border-radius: var(--radius-full); overflow: hidden; margin-top: var(--space-1); }
.rc-progress-bar { height: 100%; background: var(--color-primary); border-radius: var(--radius-full); transition: width .3s; }
.rc-pct { font-size: .75rem; color: var(--color-text-2); text-align: right; }
.rc-dec { font-size: .8rem; }
.rc-delete { color: var(--color-error); background: none; border: none; cursor: pointer; font-size: 1rem; padding: 4px; line-height: 1; }

/* ── Sowing calendar ─────────────────────────────────────────────────────── */
.sc-plants-grid { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-3); }
.sc-plant-card { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-3) var(--space-4); }
.sc-plant-header { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); flex-wrap: wrap; }
.sc-plant-name { font-weight: 600; font-size: .95rem; }
.sc-type-badge { font-size: .7rem; font-weight: 700; padding: 2px 8px; border-radius: var(--radius-full); text-transform: uppercase; letter-spacing: .04em; background: var(--color-primary-bg); color: var(--color-primary); }
.sc-meta { font-size: .78rem; color: var(--color-text-2); margin-left: auto; }
.sc-bar-row { display: flex; align-items: center; gap: var(--space-2); margin-bottom: 6px; }
.sc-bar-label { font-size: .75rem; width: 80px; flex-shrink: 0; color: var(--color-text-2); }
.sc-months { display: flex; gap: 2px; flex: 1; }
.sc-month { flex: 1; height: 20px; border-radius: 3px; background: var(--color-border); font-size: .6rem; display: flex; align-items: center; justify-content: center; color: var(--color-text-2); }
.sc-month--in  { background: var(--color-primary); color: #fff; }
.sc-month--out { background: #22c55e; color: #fff; }

/* ── Moon phase planner ──────────────────────────────────────────────────── */
.mp-advice-card { background: var(--color-primary-bg); border: 1px solid var(--color-primary); border-radius: var(--radius-lg); padding: var(--space-4); text-align: center; margin-bottom: var(--space-4); }
.mp-calendar { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-top: var(--space-3); }
.mp-cal-cell { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2); text-align: center; }
.mp-cal-emoji { font-size: 1.2rem; line-height: 1; }
.mp-cal-day { font-size: .7rem; color: var(--color-text-2); margin-top: 2px; }
.mp-cal-advice { font-size: .6rem; color: var(--color-text-2); line-height: 1.2; margin-top: 2px; }
@media (max-width: 600px) { .mp-calendar { grid-template-columns: repeat(5, 1fr); } }

/* ── Book tracker ────────────────────────────────────────────────────────── */
.bt-books-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-4); margin-top: var(--space-4); }
.bt-card { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.bt-card--done { border-color: #22c55e; }
.bt-card-header { display: flex; flex-direction: column; gap: 2px; }
.bt-title { font-weight: 600; font-size: .95rem; }
.bt-author { font-size: .82rem; color: var(--color-text-2); }
.bt-progress-wrap { height: 8px; background: var(--color-border); border-radius: var(--radius-full); overflow: hidden; }
.bt-progress-bar { height: 100%; background: var(--color-primary); border-radius: var(--radius-full); transition: width .3s; }
.bt-progress-info { font-size: .78rem; color: var(--color-text-2); display: flex; justify-content: space-between; }
.bt-card-footer { display: flex; gap: var(--space-2); margin-top: var(--space-1); }
.bt-delete { color: var(--color-error); background: none; border: 1px solid var(--color-error); border-radius: var(--radius-md); padding: 4px 10px; cursor: pointer; font-size: .8rem; }
.bt-delete:hover { background: var(--color-error); color: #fff; }
.bt-update { flex: 1; }
.bt-form { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
@media (max-width: 500px) { .bt-form { grid-template-columns: 1fr; } }

/* ── IQ estimator scale bar ──────────────────────────────────────────────── */
.iq-scale-bar { position: relative; height: 20px; border-radius: var(--radius-full); background: linear-gradient(to right, #f87171, #fbbf24, #a3e635, #34d399, #60a5fa); margin: var(--space-3) 0; }
.iq-scale-fill { display: none; }
.iq-scale-marker { position: absolute; top: 50%; transform: translate(-50%, -50%); width: 18px; height: 18px; background: #fff; border: 3px solid var(--color-primary); border-radius: 50%; box-shadow: 0 1px 4px rgba(0,0,0,.2); transition: left .4s; }

/* ── Pattern quiz ────────────────────────────────────────────────────────── */
.pq-game { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.pq-question { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.pq-sequence { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; justify-content: center; }
.pq-num { background: var(--color-surface-2); border: 2px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-2) var(--space-3); font-size: 1.3rem; font-weight: 700; min-width: 48px; text-align: center; }
.pq-num--unknown { border-color: var(--color-primary); color: var(--color-primary); letter-spacing: .1em; }
.pq-sep { color: var(--color-text-2); font-size: 1rem; font-weight: 700; }
.pq-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); width: 100%; max-width: 380px; }
.pq-option { padding: var(--space-3); font-size: 1.15rem; font-weight: 700; border: 2px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface-2); cursor: pointer; transition: border-color .15s, background .15s; text-align: center; }
.pq-option:hover:not(:disabled) { border-color: var(--color-primary); background: var(--color-primary-bg); }
.pq-option--correct { border-color: #22c55e !important; background: rgba(34, 197, 94, .12) !important; }
.pq-option--wrong { border-color: var(--color-error) !important; background: rgba(239, 68, 68, .12) !important; }

/* ── Math trainer ────────────────────────────────────────────────────────── */
.mt-game { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.mt-problem { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-6); background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: var(--radius-xl); }
.mt-num { font-size: 2.5rem; font-weight: 800; letter-spacing: -.04em; }
.mt-num--unknown { color: var(--color-primary); border-bottom: 3px solid var(--color-primary); padding-bottom: 2px; }
.mt-op { font-size: 2rem; font-weight: 300; color: var(--color-text-2); }

/* ── Memory span test ────────────────────────────────────────────────────── */
.mem-phase { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.mem-display { width: 120px; height: 120px; border-radius: var(--radius-xl); background: var(--color-surface-2); border: 2px solid var(--color-border); display: flex; align-items: center; justify-content: center; font-size: 3rem; font-weight: 800; opacity: 0; transition: opacity .2s; }
.mem-display--show { opacity: 1; }

/* ── Reaction time test ──────────────────────────────────────────────────── */
.rt-arena {
    width: 100%;
    max-width: 480px;
    height: 260px;
    border-radius: var(--radius-xl);
    background: var(--color-surface-2);
    border: 2px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--space-3) auto;
    transition: background .15s, border-color .15s;
    user-select: none;
}
.rt-arena--wait  { background: #fbbf24; border-color: #f59e0b; }
.rt-arena--go    { background: #4ade80; border-color: #22c55e; cursor: crosshair; }
.rt-arena--early { background: #f87171; border-color: #ef4444; }
.rt-instruction  { font-size: 1.15rem; font-weight: 600; text-align: center; margin: var(--space-2) 0 var(--space-3); color: var(--color-text-2); }
@media (max-width: 600px) { .fr-search-row { grid-template-columns: 1fr; } }

/* ── Tool pre output ─────────────────────────────────────────────────────── */
.tool-pre { background: var(--color-bg-2); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--space-3); font-family: monospace; font-size: .8rem; white-space: pre-wrap; word-break: break-all; max-height: 400px; overflow-y: auto; }

/* ── JSON Comparator ─────────────────────────────────────────────────────── */
.jc-row { display: grid; grid-template-columns: auto 1fr 1fr; gap: var(--space-2) var(--space-3); align-items: start; padding: var(--space-2); border-radius: var(--radius-sm); margin-bottom: 2px; font-size: .8rem; }
.jc-added { background: rgba(34,197,94,.1); }
.jc-removed { background: rgba(239,68,68,.1); }
.jc-changed { background: rgba(234,179,8,.1); }
.jc-icon { font-weight: 700; width: 16px; text-align: center; }
.jc-added .jc-icon { color: var(--color-success); }
.jc-removed .jc-icon { color: var(--color-error); }
.jc-changed .jc-icon { color: var(--color-warning); }
.jc-path { font-weight: 600; font-family: monospace; }
.jc-val { font-family: monospace; color: var(--color-text-2); word-break: break-all; }

/* ── CSS Specificity ─────────────────────────────────────────────────────── */
.cs-row { display: grid; grid-template-columns: 1fr auto auto auto auto; gap: var(--space-2) var(--space-3); align-items: center; padding: var(--space-2); border-bottom: 1px solid var(--color-border); font-size: .85rem; }
.cs-sel { font-family: monospace; word-break: break-all; }
.cs-score { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: var(--radius-sm); font-weight: 700; font-size: .8rem; }
.cs-score--id { background: rgba(239,68,68,.15); color: #ef4444; }
.cs-score--class { background: rgba(234,179,8,.15); color: #ca8a04; }
.cs-score--el { background: rgba(34,197,94,.15); color: #16a34a; }
.cs-total { font-family: monospace; font-weight: 700; font-size: .8rem; }

/* ── HTTP Status Codes ───────────────────────────────────────────────────── */
.hsc-item { display: flex; gap: var(--space-3); align-items: start; padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.hsc-code { flex: none; display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 32px; border-radius: var(--radius-sm); font-weight: 700; font-family: monospace; font-size: .9rem; }
.hsc-1xx { background: rgba(148,163,184,.15); color: #64748b; }
.hsc-2xx { background: rgba(34,197,94,.15); color: #16a34a; }
.hsc-3xx { background: rgba(59,130,246,.15); color: #2563eb; }
.hsc-4xx { background: rgba(234,179,8,.15); color: #ca8a04; }
.hsc-5xx { background: rgba(239,68,68,.15); color: #dc2626; }
.hsc-name { font-weight: 600; font-size: .9rem; margin-bottom: 2px; }
.hsc-desc { font-size: .8rem; color: var(--color-text-2); line-height: 1.4; }

/* ── htaccess checks ─────────────────────────────────────────────────────── */
.hta-checks { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-2); }
.hta-check { display: flex; align-items: center; gap: var(--space-2); font-size: .9rem; cursor: pointer; }
.hta-check input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--color-primary); }

/* ── Email header parser ─────────────────────────────────────────────────── */
.eh-hop { display: flex; gap: var(--space-2); align-items: start; padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); font-size: .8rem; }
.eh-num { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .75rem; }
.eh-field { display: grid; grid-template-columns: 180px 1fr; gap: var(--space-2); padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); font-size: .8rem; }
.eh-name { font-weight: 600; color: var(--color-text-2); }
.eh-val { font-family: monospace; word-break: break-all; }

/* ── Core Web Vitals ─────────────────────────────────────────────────────── */
.cwv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
@media (max-width: 700px) { .cwv-grid { grid-template-columns: 1fr; } }
.cwv-metric { padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.cwv-name { font-weight: 700; font-size: .95rem; margin-bottom: var(--space-1); }
.cwv-desc { font-size: .8rem; color: var(--color-text-2); margin-bottom: var(--space-2); line-height: 1.4; }
.cwv-thresholds { display: flex; flex-direction: column; gap: 2px; font-size: .75rem; }
.cwv-good { color: var(--color-success); }
.cwv-needs { color: var(--color-warning); }
.cwv-poor { color: var(--color-error); }

/* ── Countdown ───────────────────────────────────────────────────────────── */
.cd-item { padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: var(--space-3); }
.cd-name { font-weight: 700; font-size: 1rem; margin-bottom: var(--space-1); }
.cd-date { font-size: .8rem; color: var(--color-text-2); margin-bottom: var(--space-1); }
.cd-time { font-family: monospace; font-size: 1.1rem; font-weight: 600; color: var(--color-primary); margin-bottom: var(--space-2); }

/* ── Crochet hook table ──────────────────────────────────────────────────── */
.chc-table-wrap { overflow-x: auto; margin-top: var(--space-2); }
.chc-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.chc-table th { text-align: left; padding: var(--space-2); border-bottom: 2px solid var(--color-border); font-weight: 600; }
.chc-table td { padding: var(--space-1) var(--space-2); border-bottom: 1px solid var(--color-border); }

/* ── Stretching timer ────────────────────────────────────────────────────── */
.st-item { padding: var(--space-2); border-radius: var(--radius-sm); font-size: .85rem; margin-bottom: 2px; color: var(--color-text-2); }
.st-active { background: var(--color-primary); color: #fff; font-weight: 600; }

/* ── Image color picker swatches ─────────────────────────────────────────── */
.icp-swatch { width: 40px; height: 40px; border-radius: var(--radius-sm); border: 2px solid var(--color-border); cursor: pointer; transition: transform .1s; }
.icp-swatch:hover { transform: scale(1.1); }

/* ── Soil pH slider ──────────────────────────────────────────────────────── */
input[type="range"].tool-input { height: auto; padding: 0; border: none; background: transparent; }

/* ── Legal pages ─────────────────────────────────────────────────────────── */
.legal-page { max-width: 740px; padding-top: var(--space-12); padding-bottom: var(--space-16); }
.legal-page__header { margin-bottom: var(--space-10); border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-8); }
.legal-page__back { font-size: .875rem; margin-bottom: var(--space-6); }
.legal-page__back a { color: var(--color-primary); text-decoration: none; }
.legal-page__back a:hover { text-decoration: underline; }
.legal-page h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: var(--space-3); }
.legal-page__updated { font-size: .85rem; color: var(--color-text-2); }
.legal-page section { margin-bottom: var(--space-10); }
.legal-page h2 { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-4); color: var(--color-text); border-left: 3px solid var(--color-primary); padding-left: var(--space-3); }
.legal-page p, .legal-page address { font-size: .95rem; line-height: 1.8; color: var(--color-text-2); margin-bottom: var(--space-4); font-style: normal; }
.legal-page ul { list-style: none; padding-left: 0; margin-bottom: var(--space-4); }
.legal-page ul li { position: relative; padding-left: var(--space-5); font-size: .95rem; line-height: 1.8; color: var(--color-text-2); margin-bottom: var(--space-3); }
.legal-page ul li::before { content: ''; position: absolute; left: 0; top: .65em; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); opacity: .7; }
.legal-page a { color: var(--color-primary); }
.legal-page strong { color: var(--color-text); }
.legal-page code { font-family: monospace; font-size: .85em; background: var(--color-bg-2); padding: 1px 5px; border-radius: 3px; }

/* ── Blog ────────────────────────────────────────────────────────────────── */

.blog-page { padding-bottom: var(--space-16); }

/* Breadcrumb (blog layout — simple a/span structure) */
.blog-page .breadcrumb {
    padding: var(--space-4) 0 0;
    font-size: .8125rem;
    color: var(--color-text-3);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1);
}

.blog-page .breadcrumb a { color: var(--color-text-2); text-decoration: none; }
.blog-page .breadcrumb a:hover { color: var(--color-primary); }
.blog-page .breadcrumb span[aria-hidden] { color: var(--color-border); }

/* Blog page header (index + category pages) */
.blog-header { padding: var(--space-10) 0 var(--space-6); }

.blog-header h1 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: var(--space-3);
}

.blog-header__desc {
    font-size: 1.05rem;
    color: var(--color-text-2);
    max-width: 560px;
    line-height: 1.6;
}

.blog-header__back { font-size: .875rem; margin-bottom: var(--space-4); }
.blog-header__back a { color: var(--color-primary); text-decoration: none; }
.blog-header__back a:hover { text-decoration: underline; }

/* Category badge */
.badge {
    display: inline-block;
    padding: 2px var(--space-2);
    font-size: .7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    border-radius: var(--radius-full);
    background: var(--color-primary-bg);
    color: var(--color-primary);
    text-decoration: none;
    line-height: 1.6;
    white-space: nowrap;
}

.badge:hover { text-decoration: none; opacity: .85; }

/* Blog grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-8);
}

/* In-grid ad slot — spans all columns */
.blog-grid__ad {
    grid-column: 1 / -1;
    margin: var(--space-2) 0;
}

/* Blog card */
.blog-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    transition: box-shadow .2s, border-color .2s, transform .2s;
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: .8rem;
    color: var(--color-text-3);
    flex-wrap: wrap;
}

.blog-card__title { font-size: 1.1rem; font-weight: 700; line-height: 1.3; margin: 0; }

.blog-card__title a { color: var(--color-text); text-decoration: none; }
.blog-card__title a:hover { color: var(--color-primary); }

.blog-card__excerpt {
    font-size: .9rem;
    color: var(--color-text-2);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card .btn { margin-top: auto; align-self: flex-start; }

/* Empty state */
.blog-empty {
    text-align: center;
    padding: var(--space-16) var(--space-4);
    color: var(--color-text-3);
    font-size: 1.05rem;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-10);
    flex-wrap: wrap;
}

.pagination__info {
    font-size: .875rem;
    color: var(--color-text-3);
    padding: 0 var(--space-2);
}

/* Blog article (single post) */
.blog-article {
    max-width: 740px;
    margin: 0 auto;
    padding-top: var(--space-8);
}

.blog-article__header {
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.blog-article__meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    font-size: .85rem;
    color: var(--color-text-3);
    margin-bottom: var(--space-5);
}

.blog-article__author { color: var(--color-text-2); }

.blog-article__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.15;
    margin-bottom: var(--space-4);
    color: var(--color-text);
}

.blog-article__desc {
    font-size: 1.1rem;
    color: var(--color-text-2);
    line-height: 1.65;
    max-width: 660px;
}

.blog-article__body { margin-top: var(--space-2); }

.blog-article__footer {
    margin-top: var(--space-10);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

/* Prose — rendered Markdown content */
.prose {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.prose h2 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin: var(--space-10) 0 var(--space-4);
    color: var(--color-text);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border);
}

.prose h2:first-child { margin-top: var(--space-6); }

.prose h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: var(--space-8) 0 var(--space-3);
    color: var(--color-text);
}

.prose h4 {
    font-size: 1rem;
    font-weight: 700;
    margin: var(--space-6) 0 var(--space-2);
    color: var(--color-text-2);
}

.prose p { margin-bottom: var(--space-5); }

.prose ul, .prose ol { padding-left: var(--space-6); margin-bottom: var(--space-5); }

.prose li { margin-bottom: var(--space-2); line-height: 1.75; }

.prose strong { font-weight: 700; color: var(--color-text); }

.prose a { color: var(--color-primary); }
.prose a:hover { text-decoration: underline; }

.prose code {
    font-family: var(--font-mono);
    font-size: .85em;
    background: var(--color-surface-2);
    padding: .15em .4em;
    border-radius: 4px;
    color: var(--color-text);
}

.prose pre {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    overflow-x: auto;
    margin-bottom: var(--space-5);
    font-size: .85rem;
    line-height: 1.65;
}

.prose pre code { background: none; padding: 0; font-size: inherit; border-radius: 0; }

.prose blockquote {
    border-left: 3px solid var(--color-primary);
    margin: 0 0 var(--space-5);
    padding: var(--space-3) var(--space-5);
    background: var(--color-primary-bg);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-2);
    font-style: italic;
}

.prose table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-5);
    font-size: .9375rem;
    display: block;
    overflow-x: auto;
}

.prose th, .prose td {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    text-align: left;
}

.prose th {
    background: var(--color-surface-2);
    font-weight: 600;
    font-size: .875rem;
    color: var(--color-text-2);
    white-space: nowrap;
}

.prose hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-8) 0; }

.prose img { max-width: 100%; border-radius: var(--radius-md); margin: var(--space-4) 0; }

/* Responsive */
@media (max-width: 640px) {
    .blog-grid { grid-template-columns: 1fr; gap: var(--space-4); }
    .blog-card { padding: var(--space-4); }
    .blog-article { padding-top: var(--space-5); }
    .blog-article__title { font-size: 1.6rem; }
    .prose h2 { font-size: 1.25rem; }
    .prose h3 { font-size: 1.05rem; }
}