/* ==========================================================================
   Chroma Palette — global styles
   Design system: "Chromatic Precision"
   Type: Plus Jakarta Sans (display/heading) + Inter (body) + JetBrains Mono (code)
   ========================================================================== */

:root {
  /* Surfaces — Chromatic Precision palette */
  --bg: #f8f9ff;                 /* surface */
  --surface: #ffffff;            /* canvas-bg / surface-container-lowest */
  --surface-muted: #f1f5f9;      /* surface-muted */
  --surface-subtle: #f8fafc;     /* surface-subtle */
  --surface-container: #e5eeff;  /* surface-container */
  --surface-container-high: #dce9ff;
  --surface-dim: #cbdbf5;
  --border: #e2e5ea;             /* border-hairline */
  --border-variant: #c3c6d7;     /* outline-variant */
  --text: #0b1c30;               /* on-surface */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  /* Brand */
  --brand: #2563eb;              /* primary-container */
  --brand-strong: #004ac6;       /* primary */
  --brand-link: #1d4ed8;         /* border-focus */
  --brand-soft: #dbe1ff;         /* primary-fixed */
  --focus: #1d4ed8;

  /* Semantic */
  --success: #067647;
  --success-bg: #ecfdf3;
  --warning: #b54708;
  --warning-bg: #fffaeb;
  --danger: #b42318;
  --danger-bg: #fef3f2;

  /* Type scale */
  --font-display: "Plus Jakarta Sans", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Scale */
  --radius: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --max-width: 1200px;

  /* Motion */
  --ease: cubic-bezier(.4, 0, .2, 1);
  --dur-fast: 150ms;
  --dur: 200ms;

  --shadow-sm: 0 1px 3px rgba(11, 28, 48, .08);
  --shadow-md: 0 4px 16px rgba(11, 28, 48, .1);
  --shadow-lg: 0 12px 32px rgba(11, 28, 48, .14);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;               /* slate-900-ish */
    --surface: #16213a;
    --surface-muted: #1e293b;
    --surface-subtle: #17233a;
    --surface-container: #1e2a4a;
    --surface-container-high: #243458;
    --surface-dim: #2a3a5e;
    --border: #2e3a55;
    --border-variant: #3a4a6b;
    --text: #eaf1ff;
    --text-primary: #e6edf8;
    --text-secondary: #b4c3dc;
    --text-muted: #8296b5;

    --brand: #3b82f6;
    --brand-strong: #93c5fd;
    --brand-link: #93c5fd;
    --brand-soft: #1e2a4a;
    --focus: #93c5fd;

    --success: #66d19e;
    --success-bg: #0c2a1e;
    --warning: #fbbf24;
    --warning-bg: #2a2108;
    --danger: #ff8a80;
    --danger-bg: #2a1414;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, .45);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, .5);
  }
}

/* --------------------------------------------------------------------------
   Base / reset
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
  color: var(--text);
}
h1 { font-size: 2.5rem; font-weight: 800; }
h2 { font-size: 1.75rem; font-weight: 700; margin-top: var(--space-8); }
h3 { font-size: 1.15rem; font-weight: 700; margin-top: var(--space-6); }
p { margin: 0 0 var(--space-4); }

a { color: var(--brand-link); text-decoration-thickness: 1px; text-underline-offset: 2px; transition: color var(--dur-fast) var(--ease); }
a:hover { text-decoration-thickness: 2px; }

code, pre { font-family: var(--font-mono); font-size: .9em; }
code { background: var(--surface-muted); padding: .1em .35em; border-radius: 4px; }

::selection { background: var(--brand); color: #fff; }

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--brand-strong);
  color: #fff;
  border-radius: var(--radius-xs);
  transition: top .15s;
}
.skip-link:focus { top: var(--space-4); }

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}
.brand__mark {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: conic-gradient(from 210deg, #2563eb, #6366f1, #ec4899, #f59e0b, #10b981, #2563eb);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.brand__mark svg { width: 16px; height: 16px; color: #fff; }

.nav { display: flex; gap: var(--space-1); align-items: center; margin-left: auto; }
.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-xs);
  font-size: .9rem;
  font-weight: 500;
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.nav a:hover { background: var(--surface-container); color: var(--text); }
.nav a[aria-current="page"] { color: var(--brand-strong); font-weight: 600; background: var(--brand-soft); }

/* Mobile nav toggle (accessible disclosure) */
.nav-toggle {
  display: none;
  margin-left: auto;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4) var(--space-12);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  margin-top: var(--space-12);
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
  display: grid;
  gap: var(--space-6);
}
.site-footer__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--text);
}
.site-footer__nav { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); }
.site-footer__nav a { color: var(--text-secondary); text-decoration: none; font-size: .9rem; transition: color var(--dur-fast) var(--ease); }
.site-footer__nav a:hover { color: var(--brand-link); }
.site-footer small { color: var(--text-muted); }

/* Watermark credit */
.site-footer__watermark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: .75rem;
  color: var(--text-muted);
  opacity: .8;
}
.site-footer__watermark a {
  color: inherit;
  text-decoration: none;
  font-weight: 500;
}
.site-footer__watermark a:hover { color: var(--brand-link); text-decoration: underline; }

/* --------------------------------------------------------------------------
   Reusable components
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.btn:hover { border-color: var(--border-variant); box-shadow: var(--shadow-sm); }
.btn:active { transform: scale(.97); }
.btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.btn--primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-strong); border-color: var(--brand-strong); }
.btn--ghost { background: transparent; border-color: transparent; }
.btn--ghost:hover { background: var(--surface-container); border-color: transparent; box-shadow: none; }

.btn .material-symbols-outlined { font-size: 18px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
  margin: var(--space-4) 0;
}
.tool-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tool-card:hover { border-color: var(--brand); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.tool-card__icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--brand-soft);
  color: var(--brand-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}
.tool-card__icon .material-symbols-outlined { font-size: 24px; }
.tool-card h2 { margin: 0; font-size: 1.15rem; color: var(--text); }
.tool-card p { margin: 0; color: var(--text-secondary); font-size: .93rem; }

/* Material symbols base */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  line-height: 1;
  display: inline-block;
  vertical-align: middle;
}

/* Swatch */
.swatch {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.swatch__color { height: 90px; display: flex; align-items: flex-end; padding: var(--space-2); }
.swatch__label {
  font-family: var(--font-mono);
  font-size: .85rem;
  background: rgba(0,0,0,.55);
  color: #fff;
  padding: .15em .5em;
  border-radius: 4px;
}
.swatch__body { padding: var(--space-3); font-size: .9rem; }

/* Color input pair */
.color-pair { display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap; }
.color-pair input[type="color"] {
  width: 44px; height: 44px;
  padding: 0; border: 1px solid var(--border); border-radius: var(--radius-xs);
  background: none; cursor: pointer;
}
.color-pair input[type="text"] {
  font-family: var(--font-mono);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
  font-size: .95rem;
  min-width: 110px;
}
.color-pair input:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* Live region (single per page) */
.live-region {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* FAQ */
details.faq { border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-3) var(--space-4); margin-bottom: var(--space-2); background: var(--surface); }
details.faq summary { cursor: pointer; font-weight: 600; }
details.faq summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
details.faq[open] summary { margin-bottom: var(--space-3); }
details.faq p { margin: 0; color: var(--text-muted); line-height: 1.7; }
details.faq code { font-family: var(--font-mono, 'JetBrains Mono', monospace); font-size: .875em; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: .1em .35em; }

/* Page content (SEO educational section below each tool) */
.page-content {
  max-width: var(--max-w, 1120px);
  margin: 0 auto;
  padding: var(--space-10, 2.5rem) var(--space-5, 1.25rem) var(--space-8, 2rem);
}
.page-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text);
}
.page-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--text);
}
.page-content p {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
  max-width: 72ch;
}
.page-content ul, .page-content ol {
  color: var(--text-muted);
  line-height: 1.75;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}
.page-content li { margin-bottom: var(--space-1); }
.page-content a { color: var(--link, #1d4ed8); }
.page-content a:hover { text-decoration: underline; }
.page-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  overflow-x: auto;
  margin-bottom: var(--space-4);
  font-size: .9rem;
}
.page-content code {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: .875em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .1em .35em;
}
.page-content pre code { background: none; border: none; padding: 0; font-size: inherit; }

/* Content comparison table */
.page-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  margin-bottom: var(--space-6);
}
.page-content th {
  background: var(--surface);
  font-weight: 600;
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  color: var(--text);
}
.page-content td {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: top;
}
.page-content tr:nth-child(even) td { background: var(--surface); }

/* FAQ section inside page-content */
.page-content .faq-section { margin-top: var(--space-8); }
.page-content .faq-section h3 { margin-top: 0; margin-bottom: var(--space-4); }

/* Breadcrumb */
.breadcrumb { font-size: .9rem; color: var(--text-muted); margin-bottom: var(--space-4); }
.breadcrumb a { color: var(--text-muted); }

/* Related tools */
.related-tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.related-tools a {
  display: block;
  padding: var(--space-4);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.related-tools a:hover { border-color: var(--brand); transform: translateY(-2px); }

/* Inline status/feedback */
.feedback { font-size: .95rem; min-height: 1.4em; }
.feedback.is-error { color: var(--danger); }
.feedback.is-success { color: var(--success); }

/* --------------------------------------------------------------------------
   Blog & Article Layouts
   -------------------------------------------------------------------------- */
.blog-index {
  max-width: var(--max-width);
  margin: 0 auto;
}
.blog-index__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-12);
}
.blog-index__header h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: var(--space-3);
}
.blog-index__header p {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
}
.blog-card__category {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: var(--surface-container);
  color: var(--brand-strong);
  margin-bottom: var(--space-4);
}
.blog-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--space-3);
  color: var(--text);
  font-family: var(--font-display);
}
.blog-card__desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
  flex-grow: 1;
}
.blog-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}
.blog-card__meta-link {
  font-weight: 600;
  color: var(--brand-link);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* Individual Blog Article */
.blog-article {
  max-width: 820px;
  margin: 0 auto;
}
.article-header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border);
}
.article-category {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  background: var(--surface-container);
  color: var(--brand-strong);
  margin-bottom: var(--space-3);
}
.article-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}
.blog-article h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--text);
}
.article-lead {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--text-secondary);
  font-weight: 400;
}
.article-body {
  color: var(--text-secondary);
  font-size: 1.075rem;
  line-height: 1.85;
}
.article-body h2 {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  font-family: var(--font-display);
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  font-family: var(--font-display);
}
.article-body p {
  margin-bottom: var(--space-5);
}
.article-body ul, .article-body ol {
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
}
.article-body li {
  margin-bottom: var(--space-2);
}
.article-body strong {
  color: var(--text);
}
.article-body a {
  color: var(--brand-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover {
  color: var(--brand-strong);
}
.article-body pre {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  overflow-x: auto;
  margin: var(--space-6) 0;
  font-size: 0.925rem;
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.15em 0.4em;
  color: var(--text);
}
.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}
.callout {
  border-left: 4px solid var(--brand);
  background: var(--surface-container);
  padding: var(--space-4) var(--space-6);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: var(--space-6) 0;
  color: var(--text);
}
.callout p {
  margin: 0;
}
.callout strong {
  color: var(--brand-strong);
}
.table-wrap {
  overflow-x: auto;
  margin: var(--space-6) 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0;
}
.article-body th {
  background: var(--surface-muted);
  font-weight: 600;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--border);
  color: var(--text);
}
.article-body td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.article-body tr:last-child td {
  border-bottom: none;
}
.article-body tr:nth-child(even) td {
  background: var(--surface-subtle);
}

.article-cta {
  margin-top: var(--space-12);
  padding: var(--space-8);
  background: linear-gradient(135deg, var(--surface-container), var(--surface));
  border: 1px solid var(--border-variant);
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.article-cta h3 {
  font-size: 1.4rem;
  margin-top: 0;
  margin-bottom: var(--space-2);
  color: var(--text);
  font-family: var(--font-display);
}
.article-cta p {
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto var(--space-6);
}
.article-cta .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   Hero (homepage workbench)
   -------------------------------------------------------------------------- */
.hero {
  text-align: center;
  padding: var(--space-12) var(--space-4) var(--space-8);
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: .35rem .85rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 500;
}
.badge .material-symbols-outlined { font-size: 14px; }
.badge--primary { background: var(--surface-container); color: var(--brand-strong); }
.badge--success { background: var(--success-bg); color: var(--success); }
.badge--muted { background: var(--surface-muted); color: var(--text-secondary); }
.badge__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  max-width: 16ch;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--text) 0%, var(--brand-strong) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 56ch;
  margin-bottom: var(--space-8);
}

.hero__tips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
}
.hero__tips kbd {
  padding: .15rem .5rem;
  border-radius: 6px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text);
}

/* Hero workbench card */
.workbench {
  width: 100%;
  max-width: 900px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.workbench__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.workbench__label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-secondary);
  font-weight: 600;
}
.workbench__actions { display: flex; gap: var(--space-2); }

.swatch-deck {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
}
@media (max-width: 640px) { .swatch-deck { grid-template-columns: repeat(2, 1fr); } }

.hero-swatch {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
  min-height: 130px;
  padding: var(--space-3);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-family: inherit;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.hero-swatch:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.hero-swatch:active { transform: scale(.96); }
.hero-swatch:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.hero-swatch__role { font-family: var(--font-mono); font-size: .75rem; opacity: .9; font-weight: 500; }
.hero-swatch__copy {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 28px; height: 28px;
  border-radius: var(--radius-xs);
  background: rgba(0,0,0,.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
}
.hero-swatch:hover .hero-swatch__copy,
.hero-swatch:focus-visible .hero-swatch__copy { opacity: 1; }
.hero-swatch__copy .material-symbols-outlined { font-size: 16px; }
.hero-swatch__hex {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .02em;
}
.hero-swatch__name { font-family: var(--font-mono); font-size: .75rem; opacity: .85; margin-top: .15rem; }

.workbench__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
}
.hue-control { display: flex; align-items: center; gap: var(--space-3); flex: 1; min-width: 220px; }
.hue-control input[type="range"] {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(to right, #ef4444, #f59e0b, #10b981, #3b82f6, #8b5cf6, #ec4899, #ef4444);
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}
.hue-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand);
  cursor: pointer;
}
.hue-control input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand);
  cursor: pointer;
}
.hue-control__label {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}
.hue-control__val { font-family: var(--font-mono); font-size: .8rem; color: var(--text-muted); min-width: 2.5rem; text-align: right; }

/* --------------------------------------------------------------------------
   Bento grid (homepage tools showcase)
   -------------------------------------------------------------------------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
  padding: var(--space-4) 0;
}
.bento__head { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-2); }
.bento__kicker {
  font-family: var(--font-mono);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--brand-strong);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.bento-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.bento-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--brand-soft); }
.bento-card--7 { grid-column: span 7; }
.bento-card--5 { grid-column: span 5; }
.bento-card--6 { grid-column: span 6; }
.bento-card--12 { grid-column: 1 / -1; }
@media (max-width: 900px) {
  .bento-card--7, .bento-card--5, .bento-card--6 { grid-column: 1 / -1; }
}
.bento-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.bento-card__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-xs);
  background: var(--brand-soft);
  color: var(--brand-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.bento-card__icon .material-symbols-outlined { font-size: 22px; }
.bento-card h2 { margin: 0; font-size: 1.2rem; }
.bento-card__desc { color: var(--text-secondary); font-size: .95rem; margin: 0; }
.bento-card__foot {
  margin-top: auto;
  padding-top: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.bento-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--brand-strong);
  text-decoration: none;
  font-size: .9rem;
}
.bento-card__link:hover { text-decoration: underline; }
.bento-card__link .material-symbols-outlined { font-size: 16px; }

/* --------------------------------------------------------------------------
   Toast + command palette
   -------------------------------------------------------------------------- */
#copy-toast {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 60;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: #0f172a;
  color: #fff;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.1);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
#copy-toast.is-visible { opacity: 1; transform: translateY(0); }
#copy-toast .material-symbols-outlined { font-size: 20px; color: #66d19e; }
#toast-text { font-family: var(--font-mono); font-size: .85rem; font-weight: 500; }

.cmd-modal {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20vh var(--space-4) var(--space-4);
  background: rgba(15, 23, 42, .6);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.cmd-modal.is-open { opacity: 1; pointer-events: auto; }
.cmd-box {
  width: 100%;
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: scale(.97);
  transition: transform var(--dur) var(--ease);
}
.cmd-modal.is-open .cmd-box { transform: scale(1); }
.cmd-box__search {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
}
.cmd-box__search .material-symbols-outlined { color: var(--brand-strong); font-size: 22px; }
.cmd-box__search input {
  flex: 1;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 1rem;
  color: var(--text);
}
.cmd-box__search input:focus { outline: none; }
.cmd-box__search kbd {
  font-family: var(--font-mono);
  font-size: .75rem;
  padding: .15rem .5rem;
  border-radius: 6px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.cmd-box__results { max-height: 60vh; overflow-y: auto; padding: var(--space-2); }
.cmd-group-label {
  font-family: var(--font-mono);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  padding: var(--space-2) var(--space-3) var(--space-1);
}
.cmd-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-xs);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease);
}
.cmd-item:hover, .cmd-item.is-active { background: var(--surface-container); }
.cmd-item__label { display: flex; align-items: center; gap: var(--space-3); font-size: .93rem; font-weight: 500; }
.cmd-item__icon {
  width: 28px; height: 28px;
  border-radius: var(--radius-xs);
  background: var(--surface-muted);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.cmd-item__icon .material-symbols-outlined { font-size: 16px; }
.cmd-item kbd {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
}
.cmd-box__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--text-muted);
}
.cmd-box__foot kbd {
  padding: .1rem .4rem;
  border-radius: 4px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
}

/* --------------------------------------------------------------------------
   Palette gallery (Color Hunt-style browse)
   -------------------------------------------------------------------------- */
.gallery-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-6);
  align-items: start;
}
@media (max-width: 768px) {
  .gallery-layout { grid-template-columns: 1fr; }
}

.gallery-sidebar {
  position: sticky;
  top: var(--space-4);
}
.gallery-sidebar h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); margin: var(--space-6) 0 var(--space-2); font-family: var(--font-mono); font-weight: 600; }
.gallery-sidebar h2:first-child { margin-top: 0; }

.tag-list { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.tag-btn {
  display: inline-flex;
  align-items: center;
  padding: .3rem .65rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: .82rem;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.tag-btn:hover { border-color: var(--brand); color: var(--text); }
.tag-btn.is-active { background: var(--brand); border-color: var(--brand); color: #fff; }
.tag-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.gallery-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-4);
}
.gallery-toolbar input[type="search"] {
  flex: 1;
  min-width: 160px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
}
.gallery-toolbar input[type="search"]:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.gallery-toolbar select {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--surface);
  color: var(--text);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.palette-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  text-decoration: none;
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  display: flex;
  flex-direction: column;
}
.palette-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--brand-soft); }

/* Vertical-proportioned color blocks (organic hierarchy, top dominant → bottom small) */
.palette-card__stripes { display: flex; flex-direction: column; height: 170px; }
.palette-card__stripe {
  flex: 1;
  position: relative;
  display: block;
  width: 100%;
  border: none;
  margin: 0;
  padding: 0;
  cursor: pointer;
  font-family: inherit;
}
.palette-card__stripe:first-child { flex: 1.6; }
.palette-card__stripe:nth-child(2) { flex: 1.3; }
.palette-card__stripe:nth-child(3) { flex: 1.1; }
.palette-card__stripe:last-child { flex: 1; }
.palette-card__stripe:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; z-index: 1; }

.palette-card__hex {
  position: absolute;
  top: var(--space-1);
  left: var(--space-1);
  font-family: var(--font-mono);
  font-size: .7rem;
  background: rgba(0,0,0,.6);
  color: #fff;
  padding: .1em .4em;
  border-radius: 4px;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
  pointer-events: none;
}
.palette-card__stripe:hover .palette-card__hex,
.palette-card:focus-within .palette-card__hex { opacity: 1; }
.palette-card__hex.is-copied { background: rgba(0, 0, 0, .85); opacity: 1; color: #fff; }

.palette-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: .85rem;
}
.palette-card__name { font-weight: 600; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  background: none;
  border: none;
  padding: .25rem .5rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: .85rem;
  border-radius: 6px;
  transition: color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.like-btn:hover { color: var(--danger); background: var(--surface-muted); }
.like-btn.is-liked { color: var(--danger); }
.like-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.like-btn svg { vertical-align: -2px; }

.gallery-empty { padding: var(--space-8); text-align: center; color: var(--text-muted); }

/* Collection (My Palettes) tab strip */
.collection-tabs { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-4); }
.collection-tab {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.collection-tab:hover { border-color: var(--brand); color: var(--text); }
.collection-tab.is-active { background: var(--brand); border-color: var(--brand); color: #fff; }
.collection-tab:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

/* --------------------------------------------------------------------------
   Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: var(--space-3); }
  h1 { font-size: 1.9rem; }
}