/* ============================================================
   is-cool-me — Main Stylesheet
   ============================================================ */

/* === Custom Properties === */
:root {
  --color-bg:           #08080f;
  --color-surface:      #0d0d1a;
  --color-elevated:     #12122a;
  --color-card:         rgba(255, 255, 255, 0.04);
  --color-card-hover:   rgba(255, 255, 255, 0.07);
  --color-border:       rgba(139, 92, 246, 0.18);
  --color-border-sub:   rgba(255, 255, 255, 0.07);

  --color-accent:       #8b5cf6;
  --color-accent-light: #a78bfa;
  --color-cyan:         #06b6d4;
  --color-cyan-light:   #22d3ee;
  --color-pink:         #ec4899;

  --color-text:         #f1f5f9;
  --color-text-muted:   #94a3b8;
  --color-text-subtle:  #64748b;
  --color-text-on-dark: #e2e8f0;

  --gradient-accent:    linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
  --gradient-text:      linear-gradient(135deg, #a78bfa 0%, #22d3ee 100%);
  --gradient-hero-bg:   linear-gradient(135deg, #08080f 0%, #110820 40%, #081624 100%);
  --gradient-card:      linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(6, 182, 212, 0.04));

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

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  --transition-fast: 150ms cubic-bezier(.4, 0, .2, 1);
  --transition-base: 250ms cubic-bezier(.4, 0, .2, 1);
  --transition-slow: 400ms cubic-bezier(.4, 0, .2, 1);

  --shadow-sm:     0 1px 4px rgba(0, 0, 0, 0.4);
  --shadow-md:     0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg:     0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-accent: 0 0 40px rgba(139, 92, 246, 0.2);
  --shadow-cyan:   0 0 40px rgba(6, 182, 212, 0.15);

  --header-h: 64px;
  --max-w: 1120px;
  --section-py: clamp(4rem, 8vw, 7rem);
}

/* === Reset & Base === */
*, *::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);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 1rem;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); font-weight: 600; }
h4 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--color-text-muted); }

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-center { text-align: center; }

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.2);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-accent-light);
}

/* === Layout === */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section { padding: var(--section-py) 0; }

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-light);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-sub);
}

.btn-outline:hover {
  background: var(--color-card-hover);
  border-color: var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover { color: var(--color-text); }

.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* === Cards / Glass panels === */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card:hover {
  background: var(--color-card-hover);
  border-color: var(--color-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

/* === Header / Nav === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-slow), border-color var(--transition-slow), backdrop-filter var(--transition-slow);
}

.site-header.scrolled {
  background: rgba(8, 8, 15, 0.85);
  border-bottom-color: var(--color-border-sub);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}

.header-logo img { width: 32px; height: 32px; }

.logo-text { font-family: var(--font-mono); }

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover { color: var(--color-text); background: var(--color-card); }
.nav-link.active { color: var(--color-text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 99px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-bg);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 70%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  animation: drift 20s ease-in-out infinite;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -5%;
  width: 60%;
  height: 70%;
  background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  animation: drift 25s ease-in-out infinite reverse;
}

@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(3%, -3%) scale(1.05); }
  66% { transform: translate(-2%, 2%) scale(0.97); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(139, 92, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 92, 246, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 3rem 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-full);
  padding: 0.35rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent-light);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

.hero-title {
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-muted);
  margin-bottom: 2.25rem;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  font-weight: 500;
}

.trust-item svg { color: var(--color-accent-light); flex-shrink: 0; }

/* Domain search preview */
.domain-preview-card {
  background: rgba(13, 13, 26, 0.8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg), var(--shadow-accent);
}

.domain-preview-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.domain-input-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.domain-input {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.domain-input::placeholder { color: var(--color-text-subtle); }

.domain-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.domain-zone-select {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.domain-zone-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

option { background: var(--color-surface); }

.domain-preview-display {
  background: rgba(139, 92, 246, 0.06);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 3.25rem;
}

.preview-label { color: var(--color-text-subtle); font-size: 0.75rem; }

.preview-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  word-break: break-all;
}

.preview-value .preview-name { color: var(--color-accent-light); }
.preview-value .preview-zone { color: var(--color-cyan-light); }

.domain-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  text-align: center;
  margin-top: 0.75rem;
}

/* === Features Grid === */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }

.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: inherit;
  pointer-events: none;
}

.feature-card > * {
  position: relative;
  z-index: 1;
}

.feature-card:hover::before { opacity: 1; }

.feature-card h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }

.feature-card p { font-size: 0.9rem; }

/* === How It Works Steps === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 24px;
  left: calc(10% + 24px);
  right: calc(10% + 24px);
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
  opacity: 0.3;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  margin: 0 auto 1rem;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
  flex-shrink: 0;
}

.step h3 { font-size: 0.9rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.8rem; color: var(--color-text-subtle); }

/* === Learn Section / Accordion === */
.accordion { display: flex; flex-direction: column; gap: 0.75rem; }

.accordion-item {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.accordion-item.open {
  border-color: var(--color-border);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  background: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.accordion-trigger:hover { color: var(--color-accent-light); }

.accordion-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-subtle);
  transition: transform var(--transition-base), color var(--transition-fast);
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
  color: var(--color-accent-light);
}

.accordion-body {
  height: 0;
  overflow: hidden;
  transition: height var(--transition-slow);
}

.accordion-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.accordion-content p + p { margin-top: 0.75rem; }
.accordion-content ul { margin-top: 0.5rem; padding-left: 1.25rem; }
.accordion-content li { margin-bottom: 0.35rem; list-style: disc; }
.accordion-content strong { color: var(--color-text); }

/* === FAQ === */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2rem;
  align-items: start;
}

/* === Zones / Domains Page === */
.zones-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }

.zone-card {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-xl);
  padding: 2rem;
  backdrop-filter: blur(12px);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.zone-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-accent);
}

.zone-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

.zone-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.zone-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--color-accent-light);
}

/* DNS record types table */
.dns-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 1.5rem;
}

.dns-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  border-bottom: 1px solid var(--color-border-sub);
}

.dns-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
}

.dns-table tr:last-child td { border-bottom: none; }
.dns-table td:first-child { font-family: var(--font-mono); color: var(--color-accent-light); }

/* === Prose (Terms, Privacy) === */
.prose {
  max-width: 780px;
  margin: 0 auto;
}

.prose h2 {
  font-size: 1.4rem;
  color: var(--color-text);
  margin-top: 2.5rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-sub);
}

.prose h3 {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.6rem;
}

.prose p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.prose li {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.7;
  list-style: disc;
}

.prose ol li { list-style: decimal; }

.prose a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(167, 139, 250, 0.4);
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.prose a:hover {
  color: var(--color-cyan-light);
  text-decoration-color: var(--color-cyan-light);
}

.prose strong { color: var(--color-text); font-weight: 600; }

.prose .callout {
  background: rgba(139, 92, 246, 0.07);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.prose .callout p { margin-bottom: 0; font-size: 0.9rem; }

/* === Callout variants (supports both `callout tip` and `callout-tip`) === */
.prose .callout.warning, .prose .callout-warning {
  background: rgba(234, 179, 8, 0.07);
  border: 1px solid rgba(234, 179, 8, 0.25);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.prose .callout.warning p, .prose .callout-warning p { margin-bottom: 0; font-size: 0.9rem; }
.prose .callout.warning strong, .prose .callout-warning strong { color: #eab308; }

.prose .callout.tip, .prose .callout-tip {
  background: rgba(6, 182, 212, 0.07);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.prose .callout.tip p, .prose .callout-tip p { margin-bottom: 0; font-size: 0.9rem; }
.prose .callout.tip strong, .prose .callout-tip strong { color: #22d3ee; }

.prose .callout.important, .prose .callout-important {
  background: rgba(236, 72, 153, 0.07);
  border: 1px solid rgba(236, 72, 153, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.prose .callout.important p, .prose .callout-important p { margin-bottom: 0; font-size: 0.9rem; }
.prose .callout.important strong, .prose .callout-important strong { color: #ec4899; }

.prose .callout.best-practice, .prose .callout-best-practice {
  background: rgba(34, 197, 94, 0.07);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.prose .callout.best-practice p, .prose .callout-best-practice p { margin-bottom: 0; font-size: 0.9rem; }
.prose .callout.best-practice strong, .prose .callout-best-practice strong { color: #22c55e; }

/* === Contact Page === */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }

.contact-card {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.contact-card:hover {
  border-color: var(--color-border);
  transform: translateY(-3px);
}

.contact-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.6rem;
}

.contact-card h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.contact-card p { font-size: 0.875rem; margin-bottom: 1.25rem; }

.email-list { display: flex; flex-direction: column; gap: 0.5rem; }

.email-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent-light);
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.18);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), border-color var(--transition-fast);
  display: block;
  text-align: center;
  word-break: break-all;
}

.email-link:hover {
  background: rgba(139, 92, 246, 0.15);
  border-color: rgba(139, 92, 246, 0.35);
}

/* === Page header (inner pages) === */
.page-hero {
  padding: calc(var(--header-h) + 4rem) 0 4rem;
  background: var(--gradient-hero-bg);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.1), transparent 70%);
}

.page-hero-content { position: relative; z-index: 1; text-align: center; }
.page-hero-content .page-tag { margin-bottom: 1rem; }
.page-hero-content h1 { margin-bottom: 1rem; }
.page-hero-content p { font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* === Footer === */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-sub);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand { display: flex; flex-direction: column; gap: 1rem; }
.footer-logo-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
}

.footer-logo-link img { width: 28px; height: 28px; }

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover { color: var(--color-text); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-sub);
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.footer-bottom a {
  color: var(--color-text-subtle);
  transition: color var(--transition-fast);
}

.footer-bottom a:hover { color: var(--color-text-muted); }

.footer-migration-note {
  background: rgba(139, 92, 246, 0.06);
  border: 1px solid rgba(139, 92, 246, 0.15);
  border-radius: var(--radius-md);
  padding: 0.6rem 1.25rem;
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.footer-migration-note a { color: var(--color-accent-light); }

/* === Cookie consent === */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(calc(100% + 2rem));
  width: calc(100% - 3rem);
  max-width: 640px;
  z-index: 9999;
  background: rgba(13, 13, 26, 0.95);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  transition: transform 0.5s cubic-bezier(.34, 1.56, .64, 1), opacity 0.4s ease;
  opacity: 0;
}

.cookie-banner.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.cookie-text {
  flex: 1;
  min-width: 200px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.cookie-text a { color: var(--color-accent-light); text-decoration: underline; }

.cookie-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

/* === Scroll Reveal === */
[data-reveal] {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
}

.js [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

.js .doc-content .prose[data-reveal],
.js .article-content .prose[data-reveal] {
  opacity: 1;
  transform: none;
}

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }
[data-reveal-delay="5"] { transition-delay: 0.5s; }

/* === Misc utilities === */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-sub), transparent);
  margin: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge-free {
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--color-cyan-light);
}

.badge-green {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: #4ade80;
}

.inline-link {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(167, 139, 250, 0.4);
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.inline-link:hover { color: var(--color-cyan-light); }

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

/* === Responsive === */
@media (max-width: 1024px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  :root { --header-h: 56px; }

  .nav-toggle { display: flex; }

  .header-nav, .header-actions {
    display: none;
  }

  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(8, 8, 15, 0.97);
    border-bottom: 1px solid var(--color-border-sub);
    padding: 1rem;
    gap: 0.25rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .header-nav.open + .header-actions {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: calc(var(--header-h) + 180px);
    left: 0;
    right: 0;
    padding: 1rem;
    gap: 0.5rem;
    background: rgba(8, 8, 15, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-sub);
  }

  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-media-col { order: -1; }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  .steps-grid { grid-template-columns: 1fr; }

  .faq-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .grid-4 { grid-template-columns: 1fr; }
  .domain-input-group { flex-direction: column; }
  .cookie-actions { width: 100%; }
.cookie-actions .btn { flex: 1; justify-content: center; }
}

/* === Phase 1: Trust + Authorship + Utility Blocks === */
.author-section {
  padding: 1.25rem 0 0.5rem;
}

.author-card {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 1rem;
  align-items: stretch;
  border: 1px solid var(--color-border-sub);
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
}

.author-card-title {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.author-card-role {
  color: var(--color-accent-light);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.author-card-bio {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 0.6rem;
}

.author-card-links {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.author-card-links a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.author-card-review {
  border: 1px solid rgba(139, 92, 246, 0.18);
  background: rgba(139, 92, 246, 0.07);
  border-radius: var(--radius-md);
  padding: 0.8rem 0.9rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.author-card-review-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin-bottom: 0.35rem;
}

.author-card-reviewer {
  font-size: 0.88rem;
  color: var(--color-text);
  font-weight: 600;
}

.utility-block {
  margin: 1rem 0 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-sub);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.utility-block strong {
  color: var(--color-text);
}

.utility-warning {
  border-color: rgba(234, 179, 8, 0.3);
  background: rgba(234, 179, 8, 0.08);
}

.utility-verification {
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(34, 197, 94, 0.08);
}

@media (max-width: 768px) {
  .author-card {
    grid-template-columns: 1fr;
  }
}

/* ================================================================
   DOCUMENTATION-SPECIFIC STYLES
   ================================================================ */

/* ── CSS Custom Props additions ── */
:root {
  --toc-w: 240px;
  --sidebar-w: 0px;
  --doc-max-w: 880px;
  --prose-font-size: 1.05rem;
  --prose-line-height: 1.8;
}

/* ── Reading Progress Bar ── */
.progress-bar {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-accent);
  z-index: 999;
  transition: width 50ms linear;
  will-change: width;
}

/* ── Doc Layout ── */
.doc-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: var(--doc-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Compact Article Hero ── */
.article-hero {
  padding: calc(var(--header-h) + 2.5rem) 0 2.5rem;
  background: var(--gradient-hero-bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-sub);
}

.article-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 200px;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.08), transparent 70%);
  pointer-events: none;
}

.article-hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--doc-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.article-hero .page-tag { margin-bottom: 0.75rem; }

.article-hero h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 0.75rem;
  letter-spacing: -0.025em;
}

.article-hero .hero-summary {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

/* ── Article Metadata Bar ── */
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  padding: 0.75rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.article-meta-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
  flex-shrink: 0;
}

.article-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-subtle);
  opacity: 0.4;
}

.meta-category {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: var(--color-accent-light);
}

.meta-difficulty {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
}

.meta-difficulty.beginner {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: #4ade80;
}

.meta-difficulty.intermediate {
  background: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.2);
  color: #eab308;
}

.meta-difficulty.advanced {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* ── Enhanced Prose ── */
.prose {
  max-width: 100%;
  font-size: var(--prose-font-size);
  line-height: var(--prose-line-height);
  color: var(--color-text-muted);
}

.prose h2 {
  font-size: 1.6rem;
  color: var(--color-text);
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border-sub);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose h3 {
  font-size: 1.2rem;
  color: var(--color-text);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose h4 {
  font-size: 1.05rem;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.prose p {
  color: var(--color-text-muted);
  font-size: var(--prose-font-size);
  line-height: var(--prose-line-height);
  margin-bottom: 1.25rem;
}

.prose p:last-child { margin-bottom: 0; }

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.prose li {
  color: var(--color-text-muted);
  font-size: var(--prose-font-size);
  margin-bottom: 0.5rem;
  line-height: 1.8;
  list-style: disc;
}

.prose ol li { list-style: decimal; }

.prose li > ul, .prose li > ol { margin-top: 0.25rem; margin-bottom: 0; }

.prose a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(167, 139, 250, 0.4);
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.prose a:hover {
  color: var(--color-cyan-light);
  text-decoration-color: var(--color-cyan-light);
}

.prose strong { color: var(--color-text); font-weight: 600; }

.prose blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(139, 92, 246, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.prose blockquote p {
  font-style: italic;
  margin-bottom: 0;
  color: var(--color-text-on-dark);
}

.prose hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-sub), transparent);
  margin: 2.5rem 0;
}

/* ── Code blocks ── */
.prose pre {
  position: relative;
  background: rgba(13, 13, 26, 0.9);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  font-size: 0.88rem;
  line-height: 1.65;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: #e2e8f0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.87em;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.2);
  padding: 0.15em 0.45em;
  border-radius: var(--radius-sm);
  color: var(--color-accent-light);
  word-break: break-word;
}

/* ── Copy Button ── */
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--color-text-subtle);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.prose pre:hover .copy-btn { opacity: 1; }

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

.copy-btn.copied {
  color: #4ade80;
  background: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.3);
}

/* ── Anchor Links ── */
.anchor-link {
  position: absolute;
  left: -1.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.85rem;
}

.prose h2, .prose h3, .prose h4 {
  position: relative;
}

.prose h2:hover .anchor-link,
.prose h3:hover .anchor-link,
.prose h4:hover .anchor-link {
  opacity: 1;
}

/* ── Callout enhancements ── */
.prose .callout, .prose .callout-warning, .prose .callout-tip,
.prose .callout-important, .prose .callout-best-practice {
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  position: relative;
}

.prose .callout::before, .prose .callout-warning::before,
.prose .callout-tip::before, .prose .callout-important::before,
.prose .callout-best-practice::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  border-radius: 3px 0 0 3px;
}

.prose .callout { background: rgba(139, 92, 246, 0.07); border: 1px solid rgba(139, 92, 246, 0.2); }
.prose .callout::before { background: var(--color-accent); }

.prose .callout-warning, .prose .callout.warning {
  background: rgba(234, 179, 8, 0.07);
  border: 1px solid rgba(234, 179, 8, 0.25);
}
.prose .callout-warning::before, .prose .callout.warning::before { background: #eab308; }

.prose .callout-tip, .prose .callout.tip {
  background: rgba(6, 182, 212, 0.07);
  border: 1px solid rgba(6, 182, 212, 0.2);
}
.prose .callout-tip::before, .prose .callout.tip::before { background: #22d3ee; }

.prose .callout-important, .prose .callout.important {
  background: rgba(236, 72, 153, 0.07);
  border: 1px solid rgba(236, 72, 153, 0.2);
}
.prose .callout-important::before, .prose .callout.important::before { background: #ec4899; }

.prose .callout-best-practice, .prose .callout.best-practice {
  background: rgba(34, 197, 94, 0.07);
  border: 1px solid rgba(34, 197, 94, 0.2);
}
.prose .callout-best-practice::before, .prose .callout.best-practice::before { background: #22c55e; }

.prose .callout p, .prose .callout-warning p,
.prose .callout-tip p, .prose .callout-important p,
.prose .callout-best-practice p { margin-bottom: 0; }

.prose .callout p + p, .prose .callout-warning p + p,
.prose .callout-tip p + p, .prose .callout-important p + p,
.prose .callout-best-practice p + p { margin-top: 0.75rem; }

/* ── Tables ── */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.prose th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  border-bottom: 2px solid var(--color-border);
  background: rgba(139, 92, 246, 0.04);
}

.prose td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
}

.prose tr:last-child td { border-bottom: none; }

.prose td code, .prose th code { font-size: 0.82em; }

/* ── Images in prose ── */
.prose img {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-sub);
  margin: 1.5rem 0;
  width: 100%;
  height: auto;
}

.prose figure {
  margin: 2rem 0;
}

.prose figure img {
  margin-bottom: 0.75rem;
}

.prose figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  font-style: italic;
}

/* ── TOC Sidebar ── */
.toc-sidebar {
  display: none;
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  max-height: calc(100vh - var(--header-h) - 4rem);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}

.toc-sidebar::-webkit-scrollbar { width: 4px; }
.toc-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 4px; }

.toc-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-sub);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.toc-link {
  display: block;
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
  border-left: 2px solid transparent;
  line-height: 1.4;
}

.toc-link:hover {
  color: var(--color-text);
  background: rgba(139, 92, 246, 0.06);
}

.toc-link.active {
  color: var(--color-accent-light);
  border-left-color: var(--color-accent);
  background: rgba(139, 92, 246, 0.08);
}

.toc-link.toc-h3 { padding-left: 1.5rem; font-size: 0.75rem; }

/* ── Doc Content Wrapper ── */
.doc-content {
  min-width: 0;
  padding-bottom: 3rem;
}

/* ── Section dividers ── */
.doc-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-sub), transparent);
  margin: 2.5rem 0;
}

/* ── Prev/Next Navigation ── */
.doc-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-sub);
}

.doc-nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-sub);
  background: var(--color-card);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
}

.doc-nav-link:hover {
  border-color: var(--color-border);
  background: var(--color-card-hover);
}

.doc-nav-link.prev { align-items: flex-start; text-align: left; }
.doc-nav-link.next { align-items: flex-end; text-align: right; }

.doc-nav-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
}

.doc-nav-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.doc-nav-link:hover .doc-nav-title {
  color: var(--color-accent-light);
}

/* ── Share Section ── */
.share-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  margin-top: 2rem;
}

.share-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.share-buttons {
  display: flex;
  gap: 0.5rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-sub);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.share-btn:hover {
  color: var(--color-text);
  background: var(--color-card-hover);
  border-color: var(--color-border);
}

.share-btn svg {
  width: 14px;
  height: 14px;
}

/* ── Related Articles ── */
.related-section {
  margin-top: 2.5rem;
}

.related-header {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.related-card {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-sub);
  background: var(--color-card);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.related-card:hover {
  border-color: var(--color-border);
  background: var(--color-card-hover);
}

.related-card-tag {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-light);
}

.related-card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.related-card:hover .related-card-title {
  color: var(--color-accent-light);
}

.related-card-desc {
  font-size: 0.78rem;
  color: var(--color-text-subtle);
  line-height: 1.5;
}

/* ── Enhanced Blog/Guide Listing Cards ── */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.post-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-sub);
  background: var(--color-card);
  overflow: hidden;
  transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.post-card:hover {
  border-color: var(--color-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.post-card-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(6,182,212,0.1));
}

.post-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.post-card-tag {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--color-accent-light);
}

.post-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.post-card-excerpt {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
  flex: 1;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: var(--color-text-subtle);
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  margin-top: auto;
}

.post-card-meta svg {
  width: 12px;
  height: 12px;
  opacity: 0.5;
}

/* ── Search + Filter Bar ── */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.filter-search-wrap {
  position: relative;
  max-width: 32rem;
}

.filter-search-wrap svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  opacity: 0.5;
  pointer-events: none;
  color: var(--color-text-muted);
}

.filter-search {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.filter-search:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.filter-search::placeholder { color: var(--color-text-subtle); }

.filter-btns {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.filter-btn {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-sub);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-card);
}

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

/* ── No Results ── */
.no-results {
  display: none;
  text-align: center;
  padding: 4rem 0;
}

.no-results-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.no-results-text {
  font-size: 1.1rem;
  color: var(--color-text-subtle);
  opacity: 0.6;
}

/* ── Page hero enhancement ── */
.page-hero {
  padding: calc(var(--header-h) + 3rem) 0 3rem;
}

.page-hero-content p {
  max-width: 640px;
}

/* ── Featured Section ── */
.featured-section .section-header {
  margin-bottom: 1.5rem;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

/* ── Quick Links / Navigation Tabs ── */
.quick-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.quick-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.quick-nav-link:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-card-hover);
}

.quick-nav-link svg {
  width: 14px;
  height: 14px;
}

/* ── Desktop TOC Sidebar ── */
@media (min-width: 1024px) {
  .doc-layout {
    grid-template-columns: 1fr var(--toc-w);
    gap: 3rem;
  }

  .toc-sidebar {
    display: block;
  }
}

/* ── Tablet ── */
@media (max-width: 1024px) {
  .doc-nav { grid-template-columns: 1fr; }
  .doc-nav-link.next { align-items: flex-start; text-align: left; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Mobile ── */
@media (max-width: 768px) {
  :root {
    --prose-font-size: 0.98rem;
    --prose-line-height: 1.75;
  }

  .article-hero { padding: calc(var(--header-h) + 1.5rem) 0 1.75rem; }

  .article-hero h1 { font-size: clamp(1.4rem, 5vw, 1.8rem); }

  .article-hero .hero-summary { font-size: 0.95rem; }

  .article-meta {
    gap: 0.4rem 1rem;
    font-size: 0.78rem;
    padding: 0.6rem 0;
  }

  .doc-layout { padding: 0 1rem; }

  .prose h2 { font-size: 1.3rem; margin-top: 2.25rem; }
  .prose h3 { font-size: 1.05rem; margin-top: 1.5rem; }

  .prose pre {
    padding: 0.9rem 1rem;
    font-size: 0.8rem;
    margin: 1.25rem 0;
    border-radius: var(--radius-sm);
  }

  .posts-grid { grid-template-columns: 1fr; }

  .post-card-thumb { height: 160px; }

  .featured-grid { grid-template-columns: 1fr; }

  .post-card-body { padding: 1.25rem; }

  .post-card-title { font-size: 1rem; }

  .related-grid { grid-template-columns: 1fr; }

  .share-section {
    flex-direction: column;
    align-items: flex-start;
  }

  .copy-btn { opacity: 1; }

  .anchor-link { display: none; }
}

/* ── Small screens ── */
@media (max-width: 480px) {
  .article-hero { padding: calc(var(--header-h) + 1rem) 0 1.25rem; }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .article-meta-dot { display: none; }

  .doc-nav { grid-template-columns: 1fr; }
}

/* === Reduced motion === */
/* ============================================================
   DOCUMENTATION REDESIGN — ADDED FEATURES
   ============================================================ */

/* ── Reading Progress Bar ── */
.reading-progress {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-accent);
  z-index: 999;
  transition: width 100ms linear;
  box-shadow: 0 0 8px rgba(139, 92, 246, 0.4);
}

/* ── Article Hero (compact) ── */
.article-hero {
  padding: calc(var(--header-h) + 2.5rem) 0 1.5rem;
  background: var(--gradient-hero-bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-sub);
}

.article-hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 250px;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.08), transparent 70%);
  pointer-events: none;
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.8rem;
}

.article-category {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: var(--color-accent-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.7rem;
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-text-subtle);
}

.article-meta-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.6;
}

.article-hero-inner h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.article-summary {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 700px;
}

/* ── Documentation Layout ── */
.article-layout-section {
  padding: 2.5rem 0 4rem;
}

.article-layout-inner {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 3rem;
  align-items: start;
}

.article-content {
  min-width: 0;
  max-width: 780px;
}

/* ── TOC Sidebar ── */
.toc-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  max-height: calc(100vh - var(--header-h) - 4rem);
  overflow-y: auto;
}

.toc-sidebar::-webkit-scrollbar {
  width: 4px;
}
.toc-sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.toc-sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border-sub);
  border-radius: 99px;
}

.toc-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-sub);
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toc-link {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  border-left: 2px solid transparent;
  line-height: 1.4;
}

.toc-link:hover {
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.03);
}

.toc-link.active {
  color: var(--color-accent-light);
  border-left-color: var(--color-accent);
  background: rgba(139, 92, 246, 0.06);
}

.toc-link.toc-h3 {
  padding-left: 1.4rem;
  font-size: 0.75rem;
}

/* ── Anchor Links on Headings ── */
.prose h2, .prose h3 {
  position: relative;
}

.anchor-link {
  position: absolute;
  left: -1.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  color: var(--color-text-subtle);
  border-radius: var(--radius-sm);
}

.prose h2:hover .anchor-link,
.prose h3:hover .anchor-link {
  opacity: 1;
}

.anchor-link:hover {
  color: var(--color-accent-light);
  background: rgba(139, 92, 246, 0.08);
}

.anchor-link svg {
  width: 14px;
  height: 14px;
}

/* ── Code Block Improvements ── */
.prose pre {
  position: relative;
  background: rgba(13, 13, 26, 0.9);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-on-dark);
  font-family: var(--font-mono);
}

.copy-button {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.prose pre:hover .copy-button {
  opacity: 1;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
}

.copy-button.copied {
  color: #4ade80;
  border-color: rgba(74, 222, 128, 0.3);
  background: rgba(74, 222, 128, 0.1);
}

/* ── Doc Navigation (Prev/Next) ── */
.doc-nav-section {
  padding: 2rem 0 3rem;
}

.doc-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.doc-nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.doc-nav-link:hover {
  border-color: var(--color-border);
  background: var(--color-card-hover);
  transform: translateY(-2px);
}

.doc-nav-link.next {
  text-align: right;
  align-items: flex-end;
}

.doc-nav-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.doc-nav-link.next .doc-nav-label {
  flex-direction: row-reverse;
}

.doc-nav-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.doc-nav-link:hover .doc-nav-title {
  color: var(--color-accent-light);
}

/* ── Related Articles ── */
.related-section {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border-sub);
}

.related-section h2 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.related-card {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.related-card:hover {
  border-color: var(--color-border);
  background: var(--color-card-hover);
  transform: translateY(-2px);
}

.related-card-category {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
  margin-bottom: 0.5rem;
}

.related-card h3 {
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.4rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card p {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Redesigned Blog/Guide Cards ── */
.blog-card, .guide-card {
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.blog-card:hover, .guide-card:hover {
  border-color: var(--color-border);
  background: var(--color-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.blog-card-banner, .guide-card-banner {
  height: 120px;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  border-bottom: 1px solid var(--color-border-sub);
  position: relative;
  overflow: hidden;
}

.blog-card-banner::after, .guide-card-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), rgba(6, 182, 212, 0.03));
}

.blog-card-body, .guide-card-body {
  padding: 1.25rem 1.25rem 1.5rem;
}

.blog-card-tags, .guide-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.blog-card-tag, .guide-card-tag {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--color-accent-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.blog-card-tag.green, .guide-card-tag.green {
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.2);
  color: #4ade80;
}

.blog-card-tag.yellow, .guide-card-tag.yellow {
  background: rgba(234, 179, 8, 0.1);
  border-color: rgba(234, 179, 8, 0.2);
  color: #eab308;
}

.blog-card-tag.red, .guide-card-tag.red {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.blog-card-body h3, .guide-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.5rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-excerpt, .guide-card-excerpt {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-meta, .guide-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.72rem;
  color: var(--color-text-subtle);
}

.blog-card-meta svg, .guide-card-meta svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  opacity: 0.5;
}

.blog-card-meta-item, .guide-card-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* ── Improved Prose Typography ── */
.prose {
  max-width: 780px;
  margin: 0 auto;
}

.prose h2 {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-sub);
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose h3 {
  font-size: 1.15rem;
  color: var(--color-text);
  margin-top: 2rem;
  margin-bottom: 0.6rem;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose h4 {
  font-size: 1rem;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 1.1rem;
}

.prose ul, .prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.prose li {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.75;
}

.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }

.prose li strong { color: var(--color-text); }

.prose a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: rgba(167, 139, 250, 0.35);
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.prose a:hover {
  color: var(--color-cyan-light);
  text-decoration-color: var(--color-cyan-light);
}

.prose strong { color: var(--color-text); font-weight: 600; }

.prose img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-sub);
  margin: 2rem auto;
  max-width: 100%;
  height: auto;
}

.prose hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-sub), transparent);
  margin: 2.5rem 0;
}

/* ── Callout improvements ── */
.prose .callout {
  background: rgba(139, 92, 246, 0.07);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.prose .callout p { margin-bottom: 0; font-size: 0.9rem; }
.prose .callout strong { color: var(--color-accent-light); }

.prose .callout.warning, .prose .callout-warning {
  background: rgba(234, 179, 8, 0.07);
  border: 1px solid rgba(234, 179, 8, 0.25);
  border-left: 3px solid #eab308;
}
.prose .callout.warning strong, .prose .callout-warning strong { color: #eab308; }

.prose .callout.tip, .prose .callout-tip {
  background: rgba(6, 182, 212, 0.07);
  border: 1px solid rgba(6, 182, 212, 0.2);
  border-left: 3px solid var(--color-cyan);
}
.prose .callout.tip strong, .prose .callout-tip strong { color: #22d3ee; }

.prose .callout.important, .prose .callout-important {
  background: rgba(236, 72, 153, 0.07);
  border: 1px solid rgba(236, 72, 153, 0.2);
  border-left: 3px solid var(--color-pink);
}
.prose .callout.important strong, .prose .callout-important strong { color: #ec4899; }

.prose .callout.best-practice, .prose .callout-best-practice {
  background: rgba(34, 197, 94, 0.07);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-left: 3px solid #22c55e;
}
.prose .callout.best-practice strong, .prose .callout-best-practice strong { color: #22c55e; }

/* ── Inline code ── */
.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.18);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-accent-light);
  word-break: break-word;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-on-dark);
}

/* ── Blockquote ── */
.prose blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(139, 92, 246, 0.04);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.prose blockquote p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 0;
}

/* ── Tables inside prose ── */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.88rem;
}

.prose th {
  text-align: left;
  padding: 0.65rem 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-subtle);
  border-bottom: 1px solid var(--color-border-sub);
  background: rgba(255, 255, 255, 0.02);
}

.prose td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--color-text-muted);
}

.prose tr:last-child td { border-bottom: none; }

/* ── Share Section ── */
.share-section {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border-sub);
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.share-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}

.share-links {
  display: flex;
  gap: 0.5rem;
}

.share-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-card);
  border: 1px solid var(--color-border-sub);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);
}

.share-link:hover {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-card-hover);
}

.share-link svg {
  width: 14px;
  height: 14px;
}

/* ── Difficulty badges for guides ── */
.difficulty-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.difficulty-badge.beginner {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: #4ade80;
}

.difficulty-badge.intermediate {
  background: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.2);
  color: #eab308;
}

.difficulty-badge.advanced {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

/* ── Responsive: Documentation Layout ── */
@media (max-width: 1024px) {
  .article-layout-inner {
    grid-template-columns: 1fr;
  }

  .toc-sidebar {
    display: none;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .article-hero {
    padding: calc(var(--header-h) + 1.5rem) 0 1rem;
  }

  .article-hero-inner h1 {
    font-size: clamp(1.4rem, 5vw, 1.8rem);
  }

  .article-summary {
    font-size: 0.9rem;
  }

  .article-meta {
    gap: 0.35rem 0.75rem;
    font-size: 0.72rem;
  }

  .article-content {
    max-width: 100%;
  }

  .doc-nav {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .anchor-link {
    display: none;
  }

  .prose h2 {
    font-size: 1.25rem;
    margin-top: 2rem;
  }

  .prose h3 {
    font-size: 1.05rem;
    margin-top: 1.5rem;
  }

  .prose pre {
    padding: 1rem;
    margin: 1rem -0.5rem;
    border-radius: var(--radius-md);
  }

  .copy-button {
    opacity: 1;
    top: 0.5rem;
    right: 0.5rem;
  }

  .share-section {
    flex-direction: column;
    align-items: flex-start;
  }

  .blog-card-banner, .guide-card-banner {
    height: 80px;
  }

  .blog-card-body, .guide-card-body {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .article-hero-inner h1 {
    font-size: 1.3rem;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* ================================================================
   COMPATIBILITY: Task agent blog post structure
   ================================================================ */

.reading-progress {
  position: fixed;
  top: var(--header-h);
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-accent);
  z-index: 999;
  transition: width 50ms linear;
  will-change: width;
}

.article-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--doc-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.article-layout-section {
  padding: 2.5rem 0;
}

.article-layout-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: var(--doc-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1024px) {
  .article-layout-inner {
    grid-template-columns: 1fr var(--toc-w);
    gap: 3rem;
  }
}

.article-content.prose {
  max-width: 100%;
  font-size: var(--prose-font-size);
  line-height: var(--prose-line-height);
  color: var(--color-text-muted);
  min-width: 0;
}

.article-summary {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.article-category {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.25);
  color: var(--color-accent-light);
}

.share-links {
  display: flex;
  gap: 0.5rem;
}

.share-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-sub);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.share-link:hover {
  color: var(--color-text);
  background: var(--color-card-hover);
  border-color: var(--color-border);
}

.share-link svg {
  width: 14px;
  height: 14px;
}

.doc-nav-section {
  max-width: var(--doc-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.doc-nav-link.next {
  text-align: right;
  align-items: flex-end;
}

.toc-nav {
  display: flex;
  flex-direction: column;
}

.toc-nav .toc-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border-sub);
}

.toc-nav .toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.toc-nav .toc-list li {
  list-style: none;
  margin: 0;
  color: inherit;
  font-size: inherit;
}

.toc-list a.toc-link {
  display: block;
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.toc-list a.toc-link:hover {
  color: var(--color-text);
  background: rgba(139, 92, 246, 0.06);
}

.toc-list a.toc-link.active {
  color: var(--color-accent-light);
  border-left-color: var(--color-accent);
  background: rgba(139, 92, 246, 0.08);
}

.toc-list a.toc-h3 {
  padding-left: 1.5rem;
  font-size: 0.75rem;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .hero-bg::before, .hero-bg::after { animation: none; }
  .reading-progress { display: none; }
}

/* ================================================================
   FINAL DOCS UI POLISH FIXES
   ================================================================ */
:root {
  --doc-max-w: 1140px;
  --doc-article-w: 860px;
}

.article-hero {
  padding: calc(var(--header-h) + 1.6rem) 0 1rem;
}

.article-hero-inner {
  max-width: var(--doc-article-w);
  padding: 0;
}

.article-hero-inner h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  margin-bottom: 0.65rem;
}

.article-summary {
  max-width: 720px;
  line-height: 1.62;
}

.article-layout-section {
  padding: 1.75rem 0 2.5rem;
}

.article-layout-inner {
  max-width: calc(var(--doc-article-w) + var(--toc-w) + 2rem);
  grid-template-columns: minmax(0, var(--doc-article-w)) minmax(220px, var(--toc-w));
  gap: 2rem;
  padding: 0;
}

.article-content {
  max-width: var(--doc-article-w);
}

.article-content.prose {
  font-size: 1rem;
  line-height: 1.72;
}

.article-content.prose h2 {
  margin-top: 2.15rem;
  margin-bottom: 0.65rem;
}

.article-content.prose h3 {
  margin-top: 1.55rem;
  margin-bottom: 0.5rem;
}

.article-content.prose p {
  margin-bottom: 0.9rem;
}

.article-content.prose ul,
.article-content.prose ol {
  margin-bottom: 1rem;
}

/* fixed copy button + independent horizontal scroll */
.prose pre {
  position: relative;
  overflow: hidden;
  margin: 1.25rem 0;
  padding: 0;
  border-radius: var(--radius-lg);
}

.prose pre .code-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  padding: 2.55rem 1.1rem 1.1rem;
}

.prose pre code {
  display: block;
  min-width: max-content;
  font-size: 0.84rem;
  line-height: 1.62;
}

.prose pre .copy-button {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  z-index: 2;
  min-height: 2rem;
  opacity: 0.95;
}

.prose pre:hover .copy-button {
  opacity: 1;
}

.share-section {
  padding: 1.1rem 0;
  margin-top: 1rem;
  align-items: center;
  justify-content: space-between;
}

.share-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.share-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.25rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-md);
}

.share-link svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.doc-nav-section {
  padding-top: 1.4rem;
  padding-bottom: 2.2rem;
}

.related-section {
  padding: 2.2rem 0;
}

.related-grid,
.posts-grid {
  align-items: stretch;
}

.related-card,
.post-card,
.blog-card,
.guide-card {
  height: 100%;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem;
}

.blog-card,
.guide-card {
  display: flex;
  flex-direction: column;
}

.blog-card-body,
.guide-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  height: 100%;
}

.blog-card-excerpt,
.guide-card-excerpt {
  margin-bottom: auto;
}

.site-footer {
  padding: 3rem 0 1.5rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .header-inner {
    min-height: var(--header-h);
    gap: 0.75rem;
  }

  .header-logo {
    min-height: 44px;
  }

  .nav-toggle {
    width: 44px;
    height: 44px;
    padding: 0.6rem;
    align-items: center;
    justify-content: center;
  }

  .article-hero {
    padding: calc(var(--header-h) + 1.2rem) 0 0.85rem;
  }

  .article-hero-inner h1 {
    font-size: clamp(1.35rem, 5.2vw, 1.75rem);
  }

  .article-summary {
    font-size: 0.95rem;
    line-height: 1.58;
  }

  .article-layout-section {
    padding: 1.25rem 0 2rem;
  }

  .article-layout-inner {
    grid-template-columns: 1fr;
    gap: 1.3rem;
  }

  .article-content.prose h2 {
    margin-top: 1.8rem;
    font-size: 1.25rem;
  }

  .article-content.prose h3 {
    margin-top: 1.35rem;
    font-size: 1.03rem;
  }

  .prose pre {
    margin: 1rem 0;
  }

  .prose pre .code-scroll {
    padding: 2.35rem 0.95rem 0.95rem;
  }

  .prose pre .copy-button {
    top: 0.5rem;
    right: 0.5rem;
  }

  .share-section {
    gap: 0.8rem;
  }

  .share-links {
    width: 100%;
  }

  .share-link {
    min-height: 2.4rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 0.875rem;
  }

  .share-links {
    flex-direction: column;
    align-items: stretch;
  }

  .share-link {
    width: 100%;
  }
}