/*
 * Antigravity Theme for Kebria
 * Inspired by Google Antigravity design language
 */

/* ===== CSS Variables ===== */
:root {
  /* Background Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-card: rgba(26, 26, 36, 0.8);
  --bg-card-hover: rgba(34, 34, 48, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.03);
  
  /* Gradient Accents */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-cyan: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%);
  --gradient-purple: linear-gradient(135deg, #a855f7 0%, #6366f1 100%);
  --gradient-green: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-orange: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  --gradient-pink: linear-gradient(135deg, #ec4899 0%, #be185d 100%);
  --gradient-amber: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --gradient-blue: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  
  /* Solid Colors */
  --color-primary: #667eea;
  --color-secondary: #764ba2;
  --color-cyan: #00d4ff;
  --color-purple: #a855f7;
  --color-green: #10b981;
  --color-orange: #f97316;
  --color-pink: #ec4899;
  --color-amber: #f59e0b;
  --color-blue: #3b82f6;
  
  /* Glow Effects */
  --glow-primary: 0 0 40px rgba(102, 126, 234, 0.4);
  --glow-cyan: 0 0 40px rgba(0, 212, 255, 0.4);
  --glow-purple: 0 0 40px rgba(168, 85, 247, 0.4);
  --glow-green: 0 0 40px rgba(16, 185, 129, 0.4);
  --glow-orange: 0 0 40px rgba(249, 115, 22, 0.4);
  --glow-pink: 0 0 40px rgba(236, 72, 153, 0.4);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-dim: rgba(255, 255, 255, 0.3);
  
  /* Border Colors */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(102, 126, 234, 0.3);
  
  /* Typography */
  --font-display: 'Google Sans', 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', 'Vazirmatn', system-ui, sans-serif;
  --font-persian: 'Vazirmatn', 'IRANSans', 'Tahoma', sans-serif;
  --font-mono: 'Roboto Mono', 'Fira Code', monospace;
  
  /* Font Sizes */
  --text-hero: clamp(2.5rem, 8vw, 5rem);
  --text-heading: clamp(1.75rem, 4vw, 3rem);
  --text-subheading: clamp(1.125rem, 2vw, 1.5rem);
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-xs: 0.75rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal: 400;
  --z-tooltip: 500;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-persian);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  direction: rtl;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-persian);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-primary);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 4s ease infinite;
}

.gradient-text-cyan { background: var(--gradient-cyan); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.gradient-text-purple { background: var(--gradient-purple); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.gradient-text-green { background: var(--gradient-green); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.gradient-text-orange { background: var(--gradient-orange); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* ===== Glass Effect ===== */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
}

/* ===== Glow Card ===== */
.glow-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.glow-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.glow-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--glow-primary);
  transform: translateY(-4px);
}

.glow-card:hover::before {
  opacity: 0.05;
}

.glow-card > * {
  position: relative;
  z-index: 1;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-persian);
  font-size: var(--text-body);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-primary);
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  box-shadow: var(--glow-primary);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ===== Section Styles ===== */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  font-size: var(--text-heading);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: var(--text-subheading);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}