/* ============================================
   drift-guard Interactive Demo — Stylesheet
   ============================================ */

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

:root {
  --bg: #06080f;
  --bg-card: rgba(15, 20, 35, 0.7);
  --bg-glass: rgba(255,255,255,0.04);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);
  --text: #e2e8f0;
  --text-dim: #94a3b8;
  --text-bright: #ffffff;
  --primary: #3b82f6;
  --primary-glow: rgba(59,130,246,0.3);
  --green: #10b981;
  --green-glow: rgba(16,185,129,0.25);
  --red: #ef4444;
  --red-glow: rgba(239,68,68,0.25);
  --yellow: #f59e0b;
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Inter', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

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

/* --- Background Effects --- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.bg-glow {
  position: fixed; z-index: -1;
  width: 600px; height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  pointer-events: none;
}

.bg-glow-1 { top: -200px; right: -100px; background: radial-gradient(circle, var(--primary-glow), transparent 70%); }
.bg-glow-2 { bottom: -200px; left: -100px; background: radial-gradient(circle, rgba(139,92,246,0.2), transparent 70%); }

/* --- Typography --- */
.gradient-text {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #f472b6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
}

.section-desc {
  text-align: center;
  color: var(--text-dim);
  font-size: 1.1rem;
  margin-bottom: 2.5rem;
}

/* --- Hero --- */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 90vh;
  padding: 4rem 2rem 2rem;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
  backdrop-filter: blur(8px);
}

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

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--green-glow); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-dim);
  max-width: 600px;
  margin-bottom: 3rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  justify-content: center;
}

.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.stat-divider {
  width: 1px; height: 40px;
  background: var(--border);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: white;
  border-radius: 100px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--primary-glow);
}

/* --- Demo Section --- */
.demo-section {
  padding: 4rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* Steps Bar */
.steps-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.step-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.step-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.step-btn.done {
  background: var(--green);
  border-color: var(--green);
  color: white;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(255,255,255,0.1);
}

.step-btn.active .step-num, .step-btn.done .step-num { background: rgba(255,255,255,0.2); }

.step-connector {
  width: 40px; height: 2px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

.step-connector-fill {
  position: absolute;
  inset: 0;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.step-connector-fill.filled { transform: scaleX(1); }

/* Demo Viewport */
.demo-viewport {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

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

.demo-panel {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  position: relative;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.panel-header-dark { background: rgba(0,0,0,0.3); }

.panel-dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28c840; }
.panel-title { font-size: 0.8rem; color: var(--text-dim); font-family: var(--mono); }

/* Mock UI */
.mock-ui {
  padding: 0;
  transition: all 0.6s ease;
  min-height: 340px;
}

.mock-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  transition: all 0.6s ease;
}

.mock-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.6s ease;
}

.mock-logo-icon {
  color: var(--primary);
  font-size: 1.2rem;
  transition: all 0.6s ease;
}

.mock-nav-links {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.mock-nav-cta {
  padding: 4px 12px;
  background: var(--primary);
  color: white !important;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.6s ease;
}

.mock-hero {
  padding: 28px 20px 20px;
  text-align: center;
  transition: all 0.6s ease;
}

.mock-hero-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  transition: all 0.6s ease;
}

.mock-hero-desc {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 16px;
  transition: all 0.6s ease;
}

.mock-hero-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.mock-btn {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: default;
  border: none;
  font-family: var(--font);
  transition: all 0.6s ease;
}

.mock-btn-primary {
  background: var(--primary);
  color: white;
}

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

.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 0 20px 20px;
}

.mock-card {
  padding: 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: all 0.6s ease;
}

.mock-card-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
  transition: all 0.6s ease;
}

.mock-card-title {
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.mock-card-desc {
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.4;
}

/* Shield Overlay */
.shield-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(16,185,129,0.08);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  z-index: 10;
  gap: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--green);
}

.shield-overlay.visible {
  opacity: 1;
  animation: shield-flash 0.6s ease;
}

.shield-icon { font-size: 3rem; }

@keyframes shield-flash {
  0% { transform: scale(0.9); opacity: 0; }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

/* Drift markers */
.drift-markers { position: absolute; inset: 0; pointer-events: none; z-index: 5; }

.drift-marker {
  position: absolute;
  padding: 2px 8px;
  background: var(--red);
  color: white;
  font-size: 0.65rem;
  font-family: var(--mono);
  font-weight: 600;
  border-radius: 4px;
  opacity: 0;
  animation: marker-pop 0.4s ease forwards;
  white-space: nowrap;
  z-index: 6;
}

@keyframes marker-pop {
  0% { transform: scale(0); opacity: 0; }
  60% { transform: scale(1.15); }
  100% { transform: scale(1); opacity: 1; }
}

/* Terminal */
.terminal {
  padding: 16px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.7;
  min-height: 340px;
  overflow-y: auto;
  color: #c9d1d9;
}

.terminal-line {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.terminal-prompt { color: var(--green); font-weight: 700; user-select: none; }
.terminal-cmd { color: #e2e8f0; }
.terminal-success { color: var(--green); }
.terminal-error { color: var(--red); }
.terminal-warn { color: var(--yellow); }
.terminal-dim { color: #6b7280; }
.terminal-highlight { color: #60a5fa; }

.terminal-cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
  color: var(--green);
}

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

/* Action Buttons */
.demo-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: white;
  border: none;
  border-radius: 100px;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--primary-glow);
}

.action-btn.danger {
  background: linear-gradient(135deg, #dc2626, #ea580c);
  box-shadow: 0 4px 20px var(--red-glow);
}

.action-btn.success {
  background: linear-gradient(135deg, var(--green), #059669);
  box-shadow: 0 4px 20px var(--green-glow);
}

.reset-btn {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

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

/* --- How It Works --- */
.how-section {
  padding: 6rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

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

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

.command-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.command-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.command-num {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.command-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.command-card code {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.command-card p {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
}

.command-card p code {
  padding: 2px 6px;
  margin: 0;
  font-size: 0.75rem;
}

/* --- Comparison --- */
.compare-section {
  padding: 4rem 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.compare-table-wrap {
  overflow-x: auto;
  margin-top: 2rem;
}

.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.compare-table th,
.compare-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.compare-table thead th {
  background: rgba(255,255,255,0.03);
  font-weight: 700;
  font-size: 0.95rem;
}

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

.highlight-col {
  background: rgba(59,130,246,0.06);
  color: var(--text-bright);
  font-weight: 500;
}

.compare-table thead .highlight-col {
  background: rgba(59,130,246,0.12);
}

/* --- CTA --- */
.cta-section {
  padding: 6rem 2rem;
  display: flex;
  justify-content: center;
}

.cta-card {
  text-align: center;
  padding: 3.5rem 3rem;
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.08));
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 24px;
  max-width: 600px;
  width: 100%;
  backdrop-filter: blur(12px);
}

.cta-card h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.cta-install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.cta-install code {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--green);
  font-weight: 500;
}

.copy-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  transition: var(--transition);
  display: flex;
}

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

.cta-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-link {
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.cta-link:hover {
  border-color: var(--border-hover);
  background: var(--bg-glass);
}

.cta-link-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.cta-link-primary:hover {
  background: #2563eb;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* --- Animations for drifted state --- */
.mock-ui.drifted .mock-nav { background: rgba(220,38,38,0.08); }
.mock-ui.drifted .mock-logo-icon { color: #ef4444; }
.mock-ui.drifted .mock-nav-cta { background: #ef4444; }
.mock-ui.drifted .mock-hero-title { font-family: 'Courier New', monospace; color: #ef4444; }
.mock-ui.drifted .mock-hero-desc { color: #fca5a5; }
.mock-ui.drifted .mock-btn-primary { background: #ef4444; border-radius: 0; }
.mock-ui.drifted .mock-card { border-color: rgba(239,68,68,0.3); background: rgba(239,68,68,0.05); }
.mock-ui.drifted .mock-card-icon { filter: grayscale(1); }