/* ═══════════════════════════════════════════════════════════
   SpamSentinel — Volcanic Glass Design System
   Palette: #1A1A1A · #333333 · #FF6B2B · #FFB088
   Fonts: Clash Display · Newsreader · Space Mono
═══════════════════════════════════════════════════════════ */

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

:root {
  --bg:          #111111;
  --bg2:         #1A1A1A;
  --bg3:         #222222;
  --bg4:         #2A2A2A;
  --border:      #2E2E2E;
  --border2:     #3A3A3A;
  --text:        #E8E4DF;
  --text2:       #A0998F;
  --text3:       #666;
  --accent:      #FF6B2B;
  --accent2:     #FF4500;
  --accent-soft: #FFB088;
  --accent-glow: rgba(255, 107, 43, 0.15);
  --spam-red:    #FF3B30;
  --ham-green:   #30D158;
  --font-display: 'Clash Display', sans-serif;
  --font-body:    'Newsreader', serif;
  --font-mono:    'Space Mono', monospace;
  --radius:       6px;
  --radius-lg:    12px;
  --shadow:       0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:    0 8px 48px rgba(0,0,0,0.6);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Header ────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(17,17,17,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.header-nav {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav-btn {
  background: none;
  border: none;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
}

.nav-btn:hover { color: var(--text); background: var(--bg3); }
.nav-btn.active { color: var(--accent); background: var(--accent-glow); }

.header-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

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

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

.badge-text {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
}

/* ── Main ──────────────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 24px 60px;
}

/* ── Tab Panels ────────────────────────────────────────── */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero Strip ────────────────────────────────────────── */
.hero-strip {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: 18px;
  color: var(--text2);
  font-style: italic;
  max-width: 480px;
}

/* ── Detector Layout ───────────────────────────────────── */
.detector-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .detector-layout { grid-template-columns: 1fr; }
}

/* ── Input Panel ───────────────────────────────────────── */
.input-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text3);
  text-transform: uppercase;
}

.algo-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}

.algo-selector label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
}

.algo-selector select {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.algo-selector select:focus { border-color: var(--accent); }

.email-textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  padding: 14px 16px;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 160px;
}

.email-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.email-textarea::placeholder { color: var(--text3); font-style: italic; }

.input-meta {
  display: flex;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
}

.input-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255,107,43,0.35);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: var(--accent-glow);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text3);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 10px 16px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-ghost:hover { color: var(--text); border-color: var(--text3); }

/* ── Sample Chips ──────────────────────────────────────── */
.samples-section { border-top: 1px solid var(--border); padding-top: 16px; }

.samples-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.samples-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sample-chip {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 20px;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 5px 12px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.sample-chip:hover { transform: translateY(-1px); }

.spam-chip:hover {
  border-color: var(--spam-red);
  color: var(--spam-red);
  background: rgba(255,59,48,0.08);
}

.ham-chip:hover {
  border-color: var(--ham-green);
  color: var(--ham-green);
  background: rgba(48,209,88,0.08);
}

/* ── Result Panel ──────────────────────────────────────── */
.result-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.result-empty {
  text-align: center;
  color: var(--text3);
  font-style: italic;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 0;
}

.result-empty p { font-size: 14px; line-height: 1.8; }

.result-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hidden { display: none !important; }

/* ── Verdict Card ──────────────────────────────────────── */
.verdict-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border2);
  transition: all 0.4s;
}

.verdict-card.is-spam {
  background: rgba(255,59,48,0.08);
  border-color: rgba(255,59,48,0.3);
}

.verdict-card.is-ham {
  background: rgba(48,209,88,0.08);
  border-color: rgba(48,209,88,0.3);
}

.verdict-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.verdict-info { flex: 1; }

.verdict-label {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.verdict-algo {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
  margin-top: 2px;
}

.verdict-confidence {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Probability Bar ───────────────────────────────────── */
.prob-section { display: flex; flex-direction: column; gap: 8px; }

.prob-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.prob-ham { color: var(--ham-green); }
.prob-spam { color: var(--spam-red); }
.prob-title { color: var(--text3); }

.prob-track {
  height: 8px;
  background: var(--bg4);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.prob-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  background: linear-gradient(90deg, var(--ham-green), var(--spam-red));
}

.prob-value {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text2);
}

/* ── Indicators ────────────────────────────────────────── */
.indicators-section { display: flex; flex-direction: column; gap: 10px; }

.indicators-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text3);
  text-transform: uppercase;
}

.indicators-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.indicator-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 0.04em;
}

.indicator-tag.warn {
  background: rgba(255,107,43,0.12);
  border: 1px solid rgba(255,107,43,0.3);
  color: var(--accent-soft);
}

.indicator-tag.safe {
  background: rgba(48,209,88,0.08);
  border: 1px solid rgba(48,209,88,0.2);
  color: var(--ham-green);
}

.indicator-tag.neutral {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text3);
}

/* ── Stats Row ─────────────────────────────────────────── */
.stats-row {
  display: flex;
  gap: 10px;
}

.stat-chip {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.stat-val {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

/* ── Loading ───────────────────────────────────────────── */
.result-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 60px 0;
  color: var(--text3);
  font-style: italic;
  font-size: 14px;
}

.loader-ring {
  width: 36px;
  height: 36px;
  border: 2px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Section Headers ───────────────────────────────────── */
.section-header {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 12px;
}

.section-sub {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text2);
  font-style: italic;
  max-width: 560px;
}

/* ── Compare Layout ────────────────────────────────────── */
.compare-layout {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.compare-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 700px;
}

.compare-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.compare-empty {
  grid-column: 1/-1;
  text-align: center;
  color: var(--text3);
  font-style: italic;
  padding: 40px;
  border: 1px dashed var(--border2);
  border-radius: var(--radius-lg);
}

/* ── Model Result Card ─────────────────────────────────── */
.model-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.3s, transform 0.2s;
  animation: slideUp 0.3s ease both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.model-card:hover { transform: translateY(-2px); }
.model-card.is-spam { border-color: rgba(255,59,48,0.4); }
.model-card.is-ham  { border-color: rgba(48,209,88,0.3); }

.model-card-name {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.model-card-verdict {
  display: flex;
  align-items: center;
  gap: 8px;
}

.model-card-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.model-card-label.spam { color: var(--spam-red); }
.model-card-label.ham  { color: var(--ham-green); }

.model-card-conf {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  margin-left: auto;
}

.model-card-bar {
  height: 4px;
  background: var(--bg4);
  border-radius: 2px;
  overflow: hidden;
}

.model-card-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* ── Consensus Card ────────────────────────────────────── */
.consensus-card {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.consensus-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.consensus-verdict {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.consensus-verdict.spam { color: var(--spam-red); }
.consensus-verdict.ham  { color: var(--ham-green); }

.consensus-votes {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  margin-top: 4px;
}

.consensus-bar-wrap { flex: 1; min-width: 200px; }

.consensus-bar-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.consensus-bar-track {
  height: 10px;
  background: var(--bg4);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 6px;
}

.consensus-bar-fill {
  height: 100%;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--ham-green), var(--spam-red));
  transition: width 0.6s ease;
}

.consensus-bar-val {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

/* ── Dataset Stats ─────────────────────────────────────── */
.dataset-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}

.ds-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.ds-val {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 6px;
}

.ds-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.spam-color { color: var(--spam-red); }
.ham-color  { color: var(--ham-green); }

/* ── Metrics Table ─────────────────────────────────────── */
.metrics-table-wrap {
  overflow-x: auto;
  margin-bottom: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.metrics-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
}

.metrics-table thead {
  background: var(--bg3);
  border-bottom: 1px solid var(--border2);
}

.metrics-table th {
  padding: 14px 18px;
  text-align: left;
  color: var(--text3);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.metrics-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}

.metrics-table tbody tr:last-child td { border-bottom: none; }

.metrics-table tbody tr:hover { background: var(--bg3); }

.loading-cell {
  text-align: center;
  color: var(--text3);
  font-style: italic;
  padding: 32px !important;
}

.algo-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
}

.algo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.metric-val {
  font-weight: 700;
  font-size: 13px;
}

.metric-val.high { color: var(--ham-green); }
.metric-val.mid  { color: var(--accent-soft); }
.metric-val.low  { color: var(--spam-red); }

.perf-bar-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 120px;
}

.perf-bar-track {
  flex: 1;
  height: 6px;
  background: var(--bg4);
  border-radius: 3px;
  overflow: hidden;
}

.perf-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

.perf-bar-pct {
  font-size: 10px;
  color: var(--text3);
  min-width: 36px;
  text-align: right;
}

/* ── Chart ─────────────────────────────────────────────── */
.chart-section {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 40px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.chart-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.chart-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.chart-canvas-wrap {
  overflow-x: auto;
}

#metrics-chart {
  display: block;
  max-width: 100%;
}

/* ── Confusion Matrices ────────────────────────────────── */
.cm-section { margin-bottom: 40px; }

.cm-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.cm-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.cm-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  animation: fadeIn 0.4s ease both;
}

.cm-card-name {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}

.cm-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.cm-cell {
  padding: 12px 8px;
  border-radius: 4px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}

.cm-cell.tp { background: rgba(48,209,88,0.15); color: var(--ham-green); }
.cm-cell.tn { background: rgba(48,209,88,0.15); color: var(--ham-green); }
.cm-cell.fp { background: rgba(255,59,48,0.12); color: var(--spam-red); }
.cm-cell.fn { background: rgba(255,59,48,0.12); color: var(--spam-red); }

.cm-cell-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 0.06em;
  margin-top: 3px;
}

/* ── About Grid ────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.about-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

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

.about-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--border2);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 12px;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--accent-soft);
  margin-bottom: 10px;
}

.about-card p {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text2);
  line-height: 1.7;
}

.about-card p strong { color: var(--text); }

/* ── Tech Stack ────────────────────────────────────────── */
.tech-stack {
  border-top: 1px solid var(--border);
  padding-top: 32px;
}

.tech-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text3);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.tech-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-chip {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 20px;
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 14px;
  letter-spacing: 0.04em;
}

/* ── Footer ────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  background: var(--bg2);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: 0.06em;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
}

.footer-sep { color: var(--border2); }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 640px) {
  .header-inner { gap: 16px; }
  .header-badge { display: none; }
  .hero-title { font-size: 40px; }
  .input-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }
  .consensus-card { flex-direction: column; gap: 20px; }
  .about-grid { grid-template-columns: 1fr; }
}