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

:root {
  --bg:        #08080B;
  --bg-surface:#111116;
  --bg-card:   #14141A;
  --bg-elevated:#1A1A22;
  --border:    rgba(255,255,255,0.07);
  --border-hover:rgba(255,255,255,0.13);
  --accent:    #6C63FF;
  --accent-glow:rgba(108,99,255,0.22);
  --accent-subtle:rgba(108,99,255,0.1);
  --text-primary:#EEEDF5;
  --text-secondary:#8E8DA0;
  --text-muted:#52516A;
  --success:#34D399;
  --warning:#FBBF24;
  --danger:#F87171;
  --radius-md:10px;
  --radius-lg:16px;
  --radius-xl:22px;
  --shadow-md:0 4px 20px rgba(0,0,0,0.35);
  --shadow-lg:0 12px 40px rgba(0,0,0,0.5);
  --font:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  --mono:'JetBrains Mono','SF Mono',monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: rgba(108,99,255,0.12);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 4px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Nav ──────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  background: rgba(8,8,11,0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav.scrolled {
  background: rgba(8,8,11,0.92);
}

.nav-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
}

.nav-brand-icon {
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--text-secondary);
}

.nav-links a:hover { color: var(--text-primary); }

.nav-github {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  color: var(--text-primary) !important;
  font-weight: 500;
  transition: background 0.15s, border-color 0.15s;
}

.nav-github:hover {
  background: var(--bg-elevated);
  border-color: rgba(255,255,255,0.2);
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 140px 0 0;
  overflow: hidden;
  text-align: center;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero-glow-1 {
  width: 600px; height: 600px;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(108,99,255,0.18) 0%, transparent 70%);
}

.hero-glow-2 {
  width: 300px; height: 300px;
  top: 100px; left: 10%;
  background: radial-gradient(circle, rgba(52,211,153,0.08) 0%, transparent 70%);
}

.hero-glow-3 {
  width: 300px; height: 300px;
  top: 100px; right: 10%;
  background: radial-gradient(circle, rgba(248,113,113,0.07) 0%, transparent 70%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(108,99,255,0.1);
  border: 1px solid rgba(108,99,255,0.25);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: #A89FFF;
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-title-accent {
  background: linear-gradient(135deg, #6C63FF 0%, #A89FFF 50%, #34D399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  border-radius: var(--radius-md);
  box-shadow: 0 0 30px rgba(108,99,255,0.35);
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
}

.btn-hero-primary:hover {
  background: #7B73FF;
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(108,99,255,0.5);
}

.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 15px;
  border-radius: var(--radius-md);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-hero-ghost:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 64px;
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── App Mockup ───────────────────────────────────────────────────────────── */
.hero-mockup-wrap {
  position: relative;
  padding-bottom: 80px;
}

.hero-mockup-wrap::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none;
  z-index: 2;
}

.hero-mockup {
  background: var(--bg-surface);
  border: 1px solid var(--border-hover);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,255,255,0.05);
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.mockup-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.mockup-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.mockup-dot-red    { background: #FF5F57; }
.mockup-dot-yellow { background: #FFBD2E; }
.mockup-dot-green  { background: #28C840; }

.mockup-title {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.mockup-body {
  display: flex;
  height: 340px;
}

.mockup-sidebar {
  width: 160px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mockup-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.mockup-nav-item {
  font-size: 11px;
  color: var(--text-muted);
  padding: 6px 8px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mockup-nav-active {
  background: rgba(108,99,255,0.1);
  color: var(--accent);
}

.mockup-nav-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.mockup-nav-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}

.mockup-content {
  flex: 1;
  padding: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mockup-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.mockup-stat {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
}

.mockup-stat-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.mockup-stat-value {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--mono);
  line-height: 1;
}

.mockup-stat-purple .mockup-stat-value { color: var(--accent); }
.mockup-stat-green  .mockup-stat-value { color: var(--success); }
.mockup-stat-amber  .mockup-stat-value { color: var(--warning); }
.mockup-stat-muted  .mockup-stat-value { color: var(--text-muted); }

.mockup-chart {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.mockup-chart-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.mockup-sparkline {
  width: 100%;
  height: 40px;
  display: block;
}

.mockup-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  flex: 1;
}

.mockup-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.mockup-card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--border);
  font-size: 10px;
  font-weight: 600;
}

.mockup-card-icon {
  width: 20px; height: 20px;
  border-radius: 5px;
  flex-shrink: 0;
}

.mockup-icon-purple { background: rgba(108,99,255,0.2); }
.mockup-icon-green  { background: rgba(52,211,153,0.2); }

.mockup-badge {
  margin-left: auto;
  font-size: 9px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 999px;
}

.mockup-badge-amber { background: rgba(251,191,36,0.15); color: var(--warning); }
.mockup-badge-green { background: rgba(52,211,153,0.15); color: var(--success); }

.mockup-card-bars {
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.mockup-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 9px;
  color: var(--text-muted);
}

.mockup-bar-track {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
}

.mockup-bar-fill {
  height: 100%;
  border-radius: 999px;
}

.mockup-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.01);
}

.mockup-state {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 9px;
  color: var(--text-muted);
}

.mockup-dot-green { width: 6px; height: 6px; border-radius: 50%; background: var(--success); display: inline-block; }
.mockup-dot-muted { width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted); display: inline-block; }

.mockup-toggle {
  width: 28px; height: 16px;
  border-radius: 999px;
  position: relative;
}

.mockup-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  transition: left 0.2s;
}

.mockup-toggle-on  { background: var(--accent); }
.mockup-toggle-off { background: rgba(255,255,255,0.12); }
.mockup-toggle-on::after  { left: 14px; }
.mockup-toggle-off::after { left: 2px; }

/* ── Stats bar ────────────────────────────────────────────────────────────── */
.stats-bar {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.stats-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 48px;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--accent), #A89FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ── Sections ─────────────────────────────────────────────────────────────── */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

/* ── Features grid ────────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(108,99,255,0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.2s;
}

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

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

.feature-card-large {
  grid-column: span 2;
}

.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon-purple { background: rgba(108,99,255,0.15); color: var(--accent); }
.feature-icon-green  { background: rgba(52,211,153,0.15);  color: var(--success); }
.feature-icon-amber  { background: rgba(251,191,36,0.15);  color: var(--warning); }
.feature-icon-blue   { background: rgba(99,179,237,0.15);  color: #63B3ED; }

.feature-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.feature-tags span {
  font-family: var(--mono);
  font-size: 11px;
  background: rgba(108,99,255,0.1);
  color: #A89FFF;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid rgba(108,99,255,0.2);
}

/* ── Categories ───────────────────────────────────────────────────────────── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s, transform 0.2s;
}

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

.category-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-info {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.category-name {
  font-size: 15px;
  font-weight: 600;
}

.category-count {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--mono);
}

.category-examples {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Safety steps ─────────────────────────────────────────────────────────── */
.safety-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.safety-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: border-color 0.2s;
}

.safety-step:hover { border-color: var(--border-hover); }

.safety-step-num {
  font-size: 32px;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
}

.safety-step-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.safety-step-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── CTA ──────────────────────────────────────────────────────────────────── */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  width: 600px; height: 600px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(108,99,255,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card {
  background: var(--bg-card);
  border: 1px solid rgba(108,99,255,0.25);
  border-radius: var(--radius-xl);
  padding: 64px 40px;
  text-align: center;
  position: relative;
  box-shadow: 0 0 60px rgba(108,99,255,0.1);
}

.cta-icon {
  border-radius: 18px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.cta-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cta-note {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links a:hover { color: var(--text-primary); }

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── Animations ───────────────────────────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .feature-card-large { grid-column: span 1; }
  .categories-grid { grid-template-columns: 1fr 1fr; }
  .safety-steps { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-github) { display: none; }
  .mockup-cards { grid-template-columns: 1fr; }
  .mockup-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-item { padding: 0 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .hero-mockup { display: none; }
}

/* ── Light theme ──────────────────────────────────────────────────────────── */
body.light {
  --bg:          #F2F2F7;
  --bg-surface:  #FFFFFF;
  --bg-card:     #FAFAFA;
  --bg-elevated: #F0F0F5;
  --border:      rgba(0,0,0,0.07);
  --border-hover:rgba(0,0,0,0.14);
  --accent:      #5B52E8;
  --accent-glow: rgba(91,82,232,0.16);
  --accent-subtle:rgba(91,82,232,0.08);
  --text-primary: #0D0D14;
  --text-secondary:#44445A;
  --text-muted:  #8888A0;
  --success:     #059669;
  --warning:     #D97706;
  --danger:      #DC2626;
  --shadow-md:   0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg:   0 12px 40px rgba(0,0,0,0.15);
}

body.light .nav {
  background: rgba(242,242,247,0.8);
  border-bottom-color: rgba(0,0,0,0.08);
}

body.light .nav.scrolled {
  background: rgba(242,242,247,0.96);
}

body.light .hero-mockup {
  box-shadow: 0 32px 80px rgba(0,0,0,0.18), 0 0 0 1px rgba(0,0,0,0.06);
}

body.light .mockup-titlebar,
body.light .mockup-sidebar,
body.light .mockup-brand {
  background: #F0F0F5;
}

body.light .mockup-body { background: #FAFAFA; }
body.light .mockup-stat,
body.light .mockup-chart,
body.light .mockup-card { background: #F0F0F5; border-color: rgba(0,0,0,0.07); }
body.light .mockup-nav-item { color: #8888A0; }
body.light .mockup-nav-active { background: rgba(91,82,232,0.1); color: #5B52E8; }
body.light .mockup-toggle-off { background: rgba(0,0,0,0.12); }
body.light .mockup-card-header { background: rgba(0,0,0,0.02); }

body.light .stats-bar { background: #FFFFFF; }
body.light .section-alt { background: #FFFFFF; }
body.light .feature-card,
body.light .category-card,
body.light .safety-step,
body.light .cta-card { background: #FFFFFF; }

/* ── Theme toggle button ──────────────────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border-hover);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
}

/* Show moon in dark mode, sun in light mode */
.theme-icon-light { display: none; }
.theme-icon-dark  { display: block; }

body.light .theme-icon-light { display: block; }
body.light .theme-icon-dark  { display: none; }

/* ── Smooth theme transition ──────────────────────────────────────────────── */
body.theme-transitioning,
body.theme-transitioning * {
  transition:
    background-color 250ms ease,
    border-color 250ms ease,
    color 200ms ease,
    box-shadow 250ms ease !important;
}