/* Critical CSS - Above the fold styles (<10KB) */
:root {
  --primary: #3B82F6;
  --secondary: #6366F1;
  --accent: #F59E0B;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --bg: #FFFFFF;
  --bg-alt: #F9FAFB;
  --text: #1F2937;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --transition: 0.2s ease;
  --container: 1280px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  --bg: #111827;
  --bg-alt: #1F2937;
  --text: #F9FAFB;
  --text-muted: #9CA3AF;
  --border: #374151;
}

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

html { 
  font-size: 16px; 
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

[dir="rtl"] { direction: rtl; text-align: right; }

img, video { max-width: 100%; height: auto; display: block; }

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
}

/* Navigation */
.nav { display: none; }
.nav-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
}
.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--text);
  border-radius: var(--radius);
  transition: background var(--transition);
}
.nav-link:hover { background: var(--bg-alt); color: var(--primary); }

/* Mobile menu toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: transform var(--transition);
}

/* Hero section */
.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg-alt);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 2rem 1rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  min-height: 44px;
  min-width: 44px;
}

.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--secondary); color: white; }

.btn-outline {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* Footer */
.footer {
  margin-top: auto;
  background: var(--bg-alt);
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (min-width: 768px) {
  .nav { display: block; }
  .menu-toggle { display: none; }
  .container { padding: 0 2rem; }
}