/* ============================================
   DOKI — Voice Assistant for Windows & macOS
   Website Styles
   ============================================ */

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #161625;
  --bg-card: rgba(22, 22, 37, 0.7);
  --bg-card-hover: rgba(30, 30, 50, 0.8);
  --border-card: rgba(59, 130, 246, 0.15);
  --border-card-hover: rgba(59, 130, 246, 0.3);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #c084fc;
  --accent-green: #4ade80;
  --accent-red: #ef4444;

  --font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

  --radius: 12px;
  --radius-lg: 16px;
  --max-width: 1100px;
  --section-gap: 100px;
}

/* ---- Reset & Base ---- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-blue-hover);
}

img {
  max-width: 100%;
  height: auto;
}

/* ---- Layout ---- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: var(--section-gap) 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 56px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ---- Fade-in animation ---- */

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---- Navigation ---- */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.08);
  transition: background 0.3s;
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-brand img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent-blue);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}

.nav-cta:hover {
  background: var(--accent-blue-hover);
  color: #fff !important;
  transform: translateY(-1px);
}

/* ---- Hero ---- */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.04) 40%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 28px;
  border-radius: 24px;
  box-shadow: 0 0 60px rgba(59, 130, 246, 0.2), 0 0 120px rgba(139, 92, 246, 0.1);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  line-height: 1.1;
}

.hero-tagline {
  font-size: 1.4rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 600;
  font-family: var(--font-family);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: #fff;
  box-shadow: 0 4px 24px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(59, 130, 246, 0.4);
  color: #fff;
}

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

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

/* ---- How It Works ---- */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-purple), transparent);
  opacity: 0.3;
}

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

.step-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  backdrop-filter: blur(8px);
}

.step-number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ---- Mode Cards ---- */

.modes-section {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(59, 130, 246, 0.06);
  border-bottom: 1px solid rgba(59, 130, 246, 0.06);
}

.modes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.mode-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.mode-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.mode-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.mode-hotkey {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-purple-light);
  background: rgba(139, 92, 246, 0.1);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.mode-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ---- Features Grid ---- */

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(8px);
  transition: all 0.25s ease;
}

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

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ---- Pricing / Download ---- */

.pricing-section {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(59, 130, 246, 0.06);
  border-bottom: 1px solid rgba(59, 130, 246, 0.06);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 780px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.pricing-card.featured {
  border-color: var(--accent-blue);
  box-shadow: 0 0 40px rgba(59, 130, 246, 0.1);
}

.pricing-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  width: fit-content;
}

.pricing-card:not(.featured) .pricing-badge {
  color: var(--accent-green);
  background: rgba(74, 222, 128, 0.1);
}

.pricing-card.featured .pricing-badge {
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.1);
}

.pricing-card h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pricing-price {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-features li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.pricing-features li::before {
  content: '✓';
  color: var(--accent-green);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  justify-content: center;
}

/* ---- Platform Icons ---- */

.platform-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.platform-icon-sm {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ---- Hero Platform Buttons ---- */

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-platform {
  padding: 14px 28px;
}

/* ---- Platform Toggle (Modes section) ---- */

.platform-toggle {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 4px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.platform-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.platform-tab:hover {
  color: var(--text-secondary);
}

.platform-tab.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

/* ---- Download Buttons (Pricing cards) ---- */

.download-buttons {
  display: flex;
  gap: 10px;
}

.btn-download {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.9rem;
  justify-content: center;
}

/* ---- Platforms Info (below pricing) ---- */

.platforms-info {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 40px;
}

.platform-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 6px 16px;
  border-radius: 20px;
}

/* ---- Footer ---- */

.footer {
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid rgba(59, 130, 246, 0.06);
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

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

.footer a:hover {
  color: var(--accent-blue);
}

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .modes-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .hero-title {
    font-size: 3.2rem;
  }
}

@media (max-width: 640px) {
  :root {
    --section-gap: 64px;
  }

  .nav-links {
    display: none;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-tagline {
    font-size: 1.15rem;
  }

  .hero-logo {
    width: 88px;
    height: 88px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-platform {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .steps-grid::before {
    display: none;
  }

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

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

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

  .download-buttons {
    flex-direction: column;
  }

  .platforms-info {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.95rem;
  }
}