/**
 * inbx.bot v2 - Modern Landing Page Design System
 * Inspired by Intercom, Crisp, Drift, and StatusRadar
 * Features: Glassmorphism, Bento Grid, Modern Typography, Dark Theme
 */

/* ========================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================================================== */
:root {
  /* Base Colors - Dark Theme */
  --color-base: #0a0a0a;
  --color-surface: #111111;
  --color-surface-light: #1a1a1a;
  --color-surface-lighter: #242424;
  
  /* Brand Colors - Purple/Pink Gradient */
  --color-primary: #7c3aed;
  --color-primary-dark: #6d28d9;
  --color-primary-light: #a78bfa;
  --color-accent: #ec4899;
  --color-accent-cyan: #06b6d4;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #737373;
  --text-bright: #f5f5f5;
  
  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #7c3aed 0%, #ec4899 50%, #06b6d4 100%);
  --gradient-purple-pink: linear-gradient(135deg, #7c3aed, #ec4899);
  --gradient-purple-blue: linear-gradient(135deg, #7c3aed, #06b6d4);
  
  /* Spacing Scale */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 2rem;      /* 32px */
  --space-lg: 3rem;      /* 48px */
  --space-xl: 5rem;      /* 80px */
  --space-2xl: 8rem;     /* 128px */
  
  /* Typography Scale - Fluid responsive sizes */
  --font-size-hero: clamp(3rem, 8vw, 5.5rem);      /* 48-88px */
  --font-size-display: clamp(2rem, 5vw, 3.5rem);   /* 32-56px */
  --font-size-heading: clamp(1.5rem, 3vw, 2.5rem); /* 24-40px */
  --font-size-subheading: clamp(1.25rem, 2vw, 1.75rem); /* 20-28px */
  --font-size-body-lg: clamp(1.125rem, 1.5vw, 1.25rem); /* 18-20px */
  --font-size-body: 1rem;       /* 16px */
  --font-size-small: 0.875rem;  /* 14px */
  --font-size-xs: 0.75rem;      /* 12px */
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Font Family */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Border Radius */
  --radius-sm: 0.5rem;    /* 8px */
  --radius-md: 1rem;      /* 16px */
  --radius-lg: 1.5rem;    /* 24px */
  --radius-xl: 2rem;      /* 32px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);
  
  /* 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-spring: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ========================================================================
   RESET & BASE STYLES
   ======================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-display);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--color-base);
  overflow-x: hidden;
}

/* ========================================================================
   TYPOGRAPHY SYSTEM
   ======================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

h1 {
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-extrabold);
}

h2 {
  font-size: var(--font-size-display);
}

h3 {
  font-size: var(--font-size-heading);
}

h4 {
  font-size: var(--font-size-subheading);
}

p {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-body-lg);
  line-height: 1.7;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ========================================================================
   GRADIENT TEXT
   ======================================================================== */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  background-size: 200% 200%;
  animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ========================================================================
   GLASSMORPHISM CARDS
   ======================================================================== */
.glass-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: 0 8px 32px 0 rgba(124, 58, 237, 0.1);
  transition: all var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 12px 48px 0 rgba(124, 58, 237, 0.2);
}

/* ========================================================================
   BENTO GRID SYSTEM
   ======================================================================== */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  max-width: 1400px;
  margin: 0 auto;
}

@media (min-width: 1600px) {
  .bento-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1200px) and (max-width: 1599px) {
  .bento-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.bento-item {
  position: relative;
  overflow: hidden;
}

.bento-item.wide {
  grid-column: span 2;
}

.bento-item.tall {
  grid-row: span 2;
}

.bento-item.large {
  grid-column: span 2;
  grid-row: span 2;
}

/* ========================================================================
   MODERN BUTTONS
   ======================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 1rem 2rem;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

/* Primary Button - Gradient */
.btn-primary {
  background: var(--gradient-purple-pink);
  color: white;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

/* Secondary Button - Glass */
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Button Sizes */
.btn-lg {
  padding: 1.25rem 2.5rem;
  font-size: var(--font-size-body-lg);
}

.btn-sm {
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-small);
}

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

.section {
  padding: var(--space-2xl) 0;
}

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

/* ========================================================================
   ANIMATIONS
   ======================================================================== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out;
}

/* ========================================================================
   UTILITY CLASSES
   ======================================================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.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-1 { gap: var(--space-xs); }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }

.hidden { display: none; }

/* Responsive utilities */
@media (max-width: 768px) {
  .md\:hidden { display: none; }
}

@media (min-width: 769px) {
  .md\:block { display: block; }
}