/* TerminaLLM Website - Mirror Popup Inspired Theme
 * Design tokens pulled from the Flutter app's AppColors, AppSpacing, AppTextColors
 * and the SessionShareDialog / mirror setup dialog aesthetic.
 */

/* ========== CSS Custom Properties (Design Tokens) ========== */
:root {
  /* Backgrounds - from AppColors */
  --scaffold-bg: #121212;
  --surface-bg: #1E1E1E;
  --card-bg: #1E1E1E;
  --input-bg: #2A2A2A;
  --button-bg: #2A2A2A;
  --button-bg-active: #3A3A3A;
  --code-bg: #000000;

  /* Brand colors */
  --primary: #4CAF50;
  --primary-accent: #69F0AE;
  --primary-glow: rgba(76, 175, 80, 0.3);
  --success: #4CAF50;
  --warning: #FF9800;
  --error: #F44336;
  --pro-gold: #FFD700;

  /* Text colors - from AppTextColors */
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-disabled: rgba(255, 255, 255, 0.38);
  --text-accent: #69F0AE;

  /* Spacing - from AppSpacing (4dp base) */
  --space-xs2: 2px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 48px;

  /* Semantic spacing */
  --screen-padding: 24px;
  --card-padding: 20px;
  --item-spacing: 16px;
  --section-spacing: 32px;

  /* Border radii - from AppSpacing */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-xxl: 16px;

  /* Layout */
  --max-width: 720px;
  --max-width-wide: 960px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--scaffold-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* ========== Layout ========== */
.site-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--screen-padding);
}

.site-container--wide {
  max-width: var(--max-width-wide);
}

/* ========== Navigation ========== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-nav__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-md) var(--screen-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
}

.site-nav__brand:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.site-nav__logo {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 0 0 10px var(--primary-glow);
}

.site-nav__title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.site-nav__links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.site-nav__links a:hover {
  color: var(--primary-accent);
  text-decoration: none;
}

/* Mobile nav */
@media (max-width: 600px) {
  .site-nav__inner {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .site-nav__links {
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ========== Hero Section ========== */
.hero {
  text-align: center;
  padding: var(--space-xxxl) 0;
}

.hero__icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-xxl);
  margin-bottom: var(--space-xl);
  box-shadow: 0 0 40px var(--primary-glow), 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero__title {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.hero__title span {
  color: var(--primary);
  text-shadow: 0 0 20px var(--primary-glow);
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto;
}

/* ========== Cards - Mirror dialog style ========== */
.card {
  background: var(--surface-bg);
  border-radius: var(--radius-xl);
  padding: var(--card-padding);
  margin-bottom: var(--item-spacing);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(76, 175, 80, 0.2);
}

.card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ========== Code Blocks - Mirror command row style ========== */
.code-block {
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  color: var(--primary);
  overflow-x: auto;
  line-height: 1.5;
}

code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  background: var(--code-bg);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
}

/* ========== Buttons - from AppButtonStyles ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn--primary:hover {
  background: #5cb85c;
  color: #fff;
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn--secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn--secondary:hover {
  background: rgba(76, 175, 80, 0.1);
  color: var(--primary-accent);
}

.btn--tertiary {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-md) var(--space-lg);
}

.btn--tertiary:hover {
  color: var(--text-primary);
}

/* ========== Warning / Info Callouts - from WarningCallout ========== */
.callout {
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  margin: var(--item-spacing) 0;
  border-left: 4px solid;
  font-size: 0.9375rem;
}

.callout--info {
  background: rgba(33, 150, 243, 0.1);
  border-color: #2196F3;
  color: rgba(255, 255, 255, 0.85);
}

.callout--caution {
  background: rgba(255, 152, 0, 0.1);
  border-color: var(--warning);
  color: rgba(255, 255, 255, 0.85);
}

.callout--danger {
  background: rgba(244, 67, 54, 0.1);
  border-color: var(--error);
  color: rgba(255, 255, 255, 0.85);
}

/* ========== Info Box - Mirror session info style ========== */
.info-box {
  background: var(--input-bg);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.6875rem;
  color: var(--text-disabled);
  line-height: 1.6;
}

/* ========== Section Headers ========== */
.section-header {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: var(--section-spacing);
  margin-bottom: var(--item-spacing);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* ========== Legal / Long-form Content ========== */
.legal-content {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.legal-content h1 {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.legal-content h2 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-top: var(--section-spacing);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.legal-content h3 {
  font-size: 1.0625rem;
  color: var(--text-primary);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.legal-content p {
  margin-bottom: var(--space-md);
}

.legal-content ul, .legal-content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

.legal-content li {
  margin-bottom: var(--space-xs);
}

.legal-content strong {
  color: var(--text-primary);
}

.legal-content .last-updated {
  color: var(--text-disabled);
  font-size: 0.875rem;
  margin-bottom: var(--space-xl);
}

/* ========== Badge / Pill - Mirror keyword style ========== */
.badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

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

/* ========== Footer ========== */
.site-footer {
  margin-top: var(--space-xxxl);
  padding: var(--space-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  color: var(--text-disabled);
  font-size: 0.8125rem;
}

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

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

.site-footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

/* ========== Feature Grid ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--item-spacing);
  margin: var(--space-xl) 0;
}

/* ========== Blinking cursor animation ========== */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.cursor-blink {
  animation: blink 1s step-end infinite;
  color: var(--primary);
}

/* ========== Store badges ========== */
.store-badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.store-badges img {
  height: 44px;
}

/* ========== Copyable email / contact block ========== */
.contact-block {
  display: inline-flex;
  align-items: center;
  gap: 0;
  margin-top: var(--space-md);
  background: var(--code-bg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--primary);
  user-select: all;
  -webkit-user-select: all;
  cursor: text;
  line-height: 1.4;
}

.contact-email__copy {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--button-bg);
  border: none;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.75rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.contact-email__copy:hover {
  background: var(--button-bg-active);
  color: var(--primary-accent);
}

.contact-email__copy--copied {
  background: var(--primary);
  color: #fff;
}

/* Send Email link - hidden on desktop, shown on mobile */
.contact-email__send {
  display: none;
}

/* ========== Responsive ========== */
@media (max-width: 480px) {
  :root {
    --screen-padding: 16px;
  }
  .hero__title {
    font-size: 1.75rem;
  }
  .hero__subtitle {
    font-size: 1rem;
  }
  /* Show Send Email on mobile */
  .contact-email__send {
    display: inline-flex;
  }
  .site-nav__links {
    gap: var(--space-sm);
    font-size: 0.8125rem;
  }
}

/* ========== Glow accent line - top of page ========== */
.glow-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.6;
}

/* ========== Terminal typing effect for hero ========== */
.terminal-prompt {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  color: var(--text-disabled);
  margin-top: var(--space-xl);
}

.terminal-prompt .prompt-symbol {
  color: var(--primary);
}