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

:root {
  --color-bg: #09090b;
  --color-surface: #18181b;
  --color-surface-2: #27272a;
  --color-border: #3f3f46;
  --color-text: #fafafa;
  --color-text-muted: #a1a1aa;
  --color-text-dim: #71717a;
  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --color-accent: #a855f7;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

code {
  background: var(--color-surface-2);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.875em;
  color: var(--color-primary-hover);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 4px 28px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-text-dim);
}

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

.btn-outline:hover {
  background: rgba(99, 102, 241, 0.1);
}

.btn-disabled {
  background: var(--color-surface);
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.navbar.scrolled {
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

.nav-github {
  display: flex;
  align-items: center;
  padding: 6px;
  border-radius: 8px;
  transition: background 0.2s;
}

.nav-github:hover {
  background: var(--color-surface-2);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.08) 40%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

/* ===== Browser Mockup ===== */
.hero-visual {
  max-width: 600px;
  margin: 0 auto;
}

.browser-mockup {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 4px 40px rgba(0, 0, 0, 0.4),
    0 0 80px rgba(99, 102, 241, 0.06);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}

.browser-dots {
  display: flex;
  gap: 6px;
}

.browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.browser-dots span:first-child { background: #ef4444; }
.browser-dots span:nth-child(2) { background: #f59e0b; }
.browser-dots span:last-child { background: #22c55e; }

.browser-address {
  flex: 1;
  background: var(--color-surface);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

.browser-body {
  padding: 40px 24px 48px;
  display: flex;
  justify-content: center;
}

.lock-preview {
  text-align: center;
}

.lock-icon-wrapper {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--color-primary-hover);
}

.lock-preview-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.lock-preview-subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.pin-dots-preview {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}

.pin-dots-preview span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}

.pin-dots-preview span:nth-child(-n+3) {
  background: var(--color-primary);
}

.lock-preview-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
}

/* ===== Sections ===== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
}

/* ===== Features ===== */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: all 0.25s ease;
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(168, 85, 247, 0.12));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--color-primary-hover);
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ===== How It Works ===== */
.how-it-works {
  padding: 100px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto;
}

.step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
}

.step-number {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 18px;
}

.step-connector {
  width: 60px;
  height: 2px;
  background: var(--color-border);
  margin-top: 26px;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===== Screenshots ===== */
.screenshots {
  padding: 100px 0;
}

.screenshot-gallery {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.screenshot-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.screenshot-slide {
  min-width: 100%;
  padding: 24px 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.screenshot-img-wrapper {
  width: 100%;
  max-width: 720px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.screenshot-img-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-caption {
  margin-top: 16px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-align: center;
}

.screenshot-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

.screenshot-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.screenshot-btn:hover {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
  color: var(--color-primary-hover);
}

.screenshot-dots {
  display: flex;
  gap: 8px;
}

.screenshot-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: all 0.2s ease;
}

.screenshot-dot.active {
  background: var(--color-primary);
  width: 24px;
  border-radius: 4px;
}

/* ===== Install ===== */
.install {
  padding: 100px 0;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.install-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.25s ease;
}

.install-card:hover {
  transform: translateY(-2px);
}

.install-card--active:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.1);
}

.install-card--coming-soon {
  opacity: 0.75;
}

.install-card-icon {
  margin-bottom: 18px;
  display: flex;
  justify-content: center;
  min-height: 36px;
  align-items: center;
}

.install-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.install-card-status {
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.install-card-status--live {
  color: var(--color-success);
}

.install-card-status--soon {
  color: var(--color-warning);
}

.install-card-status--manual {
  color: var(--color-text-dim);
}

.btn-install {
  width: 100%;
  justify-content: center;
  padding: 12px 20px;
  font-size: 0.875rem;
}

/* ===== Manual Instructions ===== */
.manual-instructions {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 40px;
}

.manual-instructions h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 24px;
  text-align: center;
}

.instruction-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.instruction-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.instruction-num {
  width: 28px;
  height: 28px;
  min-width: 28px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary-hover);
}

.instruction-step p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding-top: 3px;
}

.instruction-step strong {
  color: var(--color-text);
}

/* ===== Compatibility ===== */
.compatibility {
  padding: 80px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.browser-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.browser-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
}

.browser-name {
  font-weight: 600;
}

.browser-status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 100px;
}

.browser-item--supported .browser-status-badge {
  background: rgba(34, 197, 94, 0.12);
  color: var(--color-success);
}

.browser-item--unsupported .browser-status-badge {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.compat-note {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

/* ===== Footer ===== */
.footer {
  padding: 48px 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

.footer-copy a {
  color: var(--color-text-muted);
  transition: color 0.2s;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links a:not(.nav-github) {
    display: none;
  }

  .hero {
    padding: 120px 0 60px;
  }

  .hero-actions {
    flex-direction: column;
    margin-bottom: 48px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 24px;
  }

  .step-connector {
    width: 2px;
    height: 32px;
    margin: 0;
  }

  .install-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .manual-instructions {
    padding: 28px 20px;
  }

  .screenshot-slide {
    padding: 16px 12px 12px;
  }

  .browser-list {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

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

/* ===== Animations ===== */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fade-in-up 0.5s ease forwards;
  opacity: 0;
}

.animate-in:nth-child(1) { animation-delay: 0s; }
.animate-in:nth-child(2) { animation-delay: 0.08s; }
.animate-in:nth-child(3) { animation-delay: 0.16s; }
.animate-in:nth-child(4) { animation-delay: 0.24s; }
.animate-in:nth-child(5) { animation-delay: 0.32s; }
.animate-in:nth-child(6) { animation-delay: 0.4s; }