/* Adwaita Sans (GNOME), vendored as variable fonts */
@font-face {
  font-family: "Adwaita Sans";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../assets/fonts/AdwaitaSans-Regular.ttf")
    format("truetype-variations");
}

@font-face {
  font-family: "Adwaita Sans";
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("../assets/fonts/AdwaitaSans-Italic.ttf")
    format("truetype-variations");
}

* {
  box-sizing: border-box;
}

:root {
  /* Colors - Modern Dark Theme (VS Code inspired) */
  --bg-primary: #111111;
  --bg-secondary: #1e1e1e;
  --bg-tertiary: #2d2d2d;
  --bg-header: #1e1e1e;
  --bg-input: #3c3c3c;
  --bg-hover: #2a2d2e;
  --bg-active: #37373d;

  --text-primary: #cccccc;
  --text-secondary: #969696;
  --text-muted: #6e6e6e;
  --text-inverse: #ffffff;

  --accent-color: #727adc;
  --accent-hover: #5f66c2;
  --danger-color: #f14c4c;
  --success-color: #4caf50;
  --warning-color: #cca700;

  --border-color: #3e3e42;

  --windows-color: #007fd4;
  --windows-hover: #026ec1;
  --pypi-color: #cca700;
  --pypi-hover: #b99700;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 64px;

  /* Layout */
  --container-width: 1248px;
  --header-height: 70px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
}

body,
html {
  margin: 0;
  padding: 0;
  font-family:
    "Adwaita Sans",
    "Outfit",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

ul {
  list-style: none;
  padding: 0;
}

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

/* Navbar */
.navbar {
  height: var(--header-height);
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: 1.2em;
  color: var(--text-inverse);
}

.logo img {
  height: 26px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-links a {
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5em;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: radial-gradient(
    circle at top center,
    #3b3b43 0%,
    var(--bg-primary) 60%
  );
}

.hero-logo {
  height: 130px;
  margin: 0 auto var(--spacing-xs);
  display: block;
}

.hero-title {
  font-size: 3.5em;
  font-weight: 350;
  font-style: italic;
  margin: 0 0 var(--spacing-md);
  background: linear-gradient(
    135deg,
    var(--text-inverse) 0%,
    var(--text-secondary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.1em;
  font-weight: 250;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-actions {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
  width: 100%;
}

.uv-hint {
  margin-top: calc(-1 * var(--spacing-md));
}

.secondary-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

.pip-install {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: "Consolas", monospace;
  color: var(--text-primary);
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
}

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

.small-text {
  font-size: 0.9em;
  color: var(--text-muted);
  margin-top: -10px;
}

.small-text code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.1em;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 127, 212, 0.3);
  justify-content: center;
}

.hero-actions > .btn-primary {
  width: 22em;
  max-width: 100%;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 127, 212, 0.4);
}

.btn-windows {
  background: var(--windows-color);
  box-shadow: 0 4px 12px rgba(0, 127, 212, 0.3);
}

.btn-windows:hover {
  background: var(--windows-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 127, 212, 0.4);
}

.btn-pypi {
  background: var(--pypi-color);
  box-shadow: 0 4px 12px rgba(170, 161, 32, 0.3);
}

.btn-pypi:hover {
  background: var(--pypi-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(170, 161, 32, 0.4);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

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

/* Hero Image */
.hero-image {
  margin-top: var(--spacing-xl);
  position: relative;
}

.hero-image img {
  max-width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.hero-video {
  display: block;
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* Features Section */
.features {
  padding: var(--spacing-xxl) 0;
  background: radial-gradient(
    circle 640px at top center,
    rgba(59, 59, 67, 0.6) 0%,
    var(--bg-secondary) 100%
  );
}

.section-title {
  text-align: center;
  font-size: 2.5em;
  font-weight: 400;
  margin-bottom: var(--spacing-xxl);
  color: var(--text-inverse);
}

.section-title::after {
  content: "";
  display: block;
  width: 240px;
  height: 1px;
  margin: 6px auto 0;
  background: linear-gradient(
    90deg,
    transparent,
    var(--text-primary),
    transparent
  );
  border-radius: var(--radius-sm);
}

.feature-rows {
  max-width: 960px;
  margin: 0 auto;
}

.feature-row {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.feature-row:last-child {
  border-bottom: none;
}

.feature-text {
  margin: 0 auto;
  font-size: 1.05em;
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 36em;
  line-height: 1.7;
  text-align: justify;
  text-align-last: center;
  hyphens: auto;
}

.feature-title {
  display: block;
  text-align: center;
  font-size: 1.5em;
  font-weight: 500;
  font-style: italic;
  color: var(--accent-color);
  margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta-section {
  padding: 80px 0;
  text-align: center;
  background: linear-gradient(
    to bottom,
    var(--bg-primary),
    var(--bg-secondary)
  );
}

.cta-section h2 {
  font-size: 2.5em;
  font-weight: 400;
  margin-bottom: var(--spacing-md);
  color: var(--text-inverse);
}

.cta-section p {
  color: var(--text-secondary);
  font-size: 1.2em;
  margin-bottom: var(--spacing-xl);
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.cta-buttons .uv-hint {
  margin-top: 0;
}

/* Footer */
footer {
  background: var(--bg-header);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-inverse);
  font-weight: 600;
}

.footer-logo img {
  height: 20px;
  opacity: 0.8;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

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

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

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9em;
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-lg);
}

/* Responsive */
@media (max-width: 768px) {
  .navbar .container {
    position: relative;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-header);
    flex-direction: column;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    gap: var(--spacing-md);
  }

  .nav-links.active {
    display: flex;
  }

  .hero-logo {
    height: 80px;
  }

  .hero-title {
    font-size: 1.75em;
    padding: 0 var(--spacing-md);
  }

  .hero-subtitle {
    padding: 0 var(--spacing-md);
    font-size: 1em;
  }

  .hero-actions {
    flex-direction: column;
    width: auto;
    padding: 0 var(--spacing-md);
  }

  .hero-actions > .btn-primary {
    width: 100%;
  }

  .install-cmd {
    font-size: 1.1em;
    max-width: 100%;
  }

  .section-title {
    font-size: 1.75em;
  }

  .feature-row {
    padding: var(--spacing-lg) 0;
  }

  .feature-text {
    font-size: 0.95em;
    text-align: center;
    text-wrap: balance;
  }

  .feature-title {
    font-size: 1.3em;
  }

  .cta-section h2 {
    font-size: 1.5em;
    padding: 0 var(--spacing-md);
  }

  .cta-section p {
    font-size: 1em;
    padding: 0 var(--spacing-md);
  }

  .cta-buttons {
    flex-direction: column;
    padding: 0 var(--spacing-md);
  }

  .cta-buttons .btn {
    width: 100%;
    justify-content: center;
    box-sizing: border-box;
  }

  .btn-lg {
    padding: 10px 20px;
    font-size: 0.9em;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
}

/* Very narrow viewports */
@media (max-width: 480px) {
  .hero-subtitle {
    font-size: 0.85em;
  }
}

/* Syna additions */
.install-cmd {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.5em;
  font-family: "Consolas", monospace;
  color: var(--text-primary);
}

.uv-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85em;
  color: var(--accent-color);
}

.uv-hint:hover {
  color: var(--accent-hover);
}

.install-cmd .copy-cmd,
.copy-cmd {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 4px;
  font-size: 1em;
  transition: color 0.2s;
}

.copy-cmd:hover {
  color: var(--text-inverse);
}

.copy-cmd.copied {
  color: var(--success-color);
}

.cta-cmd {
  margin-top: var(--spacing-lg);
}