/**
 * public/css/base.css
 * Global design tokens, typography, dark theme variables, and shared layout components
 */

:root {
  --bg-main: #0a0d14;
  --bg-surface: #111622;
  --bg-surface-hover: #171f30;
  --bg-card: #131b2c;
  --bg-card-border: #1e293b;
  --bg-code: #0a0e17;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --accent-emerald: #10b981;
  --accent-emerald-dim: rgba(16, 185, 129, 0.15);
  --accent-blue: #3b82f6;
  --accent-blue-dim: rgba(59, 130, 246, 0.15);
  --accent-amber: #f59e0b;
  --accent-amber-dim: rgba(245, 158, 11, 0.15);
  --accent-purple: #8b5cf6;
  --accent-purple-dim: rgba(139, 92, 246, 0.15);

  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-arabic: 'Amiri', serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px -5px rgba(16, 185, 129, 0.15);
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Header & Navbar
   ═══════════════════════════════════════════════════════════════════════════ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--bg-card-border);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  flex-shrink: 0;
}

.logo-icon {
  width: 32px;
  height: 32px;
  max-width: 32px;
  max-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.brand-logo-img {
  width: 32px !important;
  height: 32px !important;
  max-width: 32px !important;
  max-height: 32px !important;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(16, 185, 129, 0.25));
  transition: transform 0.2s ease;
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.06);
}

.footer-logo-img {
  width: 28px !important;
  height: 28px !important;
  max-width: 28px !important;
  max-height: 28px !important;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(16, 185, 129, 0.2));
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.logo-subtitle {
  font-size: 0.7rem;
  color: var(--accent-emerald);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: #111;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.btn-login:hover {
  opacity: 0.9;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-full);
  text-decoration: none;
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 500;
}

.user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
}

.user-initial {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-emerald);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.btn-logout {
  color: var(--text-dim);
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.btn-logout:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Main Content & Footer
   ═══════════════════════════════════════════════════════════════════════════ */

.main-content {
  flex: 1;
}

.site-footer {
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-main) 100%);
  border-top: 1px solid var(--bg-card-border);
  padding: 4.5rem 1.5rem 2rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
}

.footer-brand {
  max-width: 480px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-emerald);
  margin-bottom: 1.25rem;
  font-weight: 600;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  transition: all 0.2s ease;
  padding-left: 0;
}

.footer-col a:hover {
  color: var(--text-main);
  padding-left: 0.35rem;
}

.footer-bottom {
  max-width: 1200px;
  margin: 3.5rem auto 0;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid rgba(30, 41, 59, 0.6);
}

.footer-bottom-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-badge {
  font-family: var(--font-mono);
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.2);
  font-size: 0.75rem;
}

.portal-free-badge {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.35rem 0.75rem;
  background: linear-gradient(135deg, var(--accent-emerald) 0%, #059669 100%);
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

@media (max-width: 768px) {
  .footer-container {
    gap: 2.5rem;
  }

  .footer-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }

  .footer-bottom-container {
    flex-direction: column;
    align-items: flex-start;
    text-align: center;
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 480px) {
  .footer-links-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer {
    padding: 3rem 1rem 1.5rem;
  }
}