/* ============================================
   BP EXCHANGE - MAIN CSS DESIGN SYSTEM
   Modern, Mobile-First, High-Converting
============================================ */

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
============================================ */
:root {
  /* Primary Brand Colors */
  --bp-primary: #0052cc;
  --bp-primary-dark: #003d99;
  --bp-primary-light: #0066ff;
  --bp-secondary: #ff4757;
  --bp-secondary-dark: #ee2737;
  --bp-accent: #10b981;
  --bp-accent-dark: #059669;
  --bp-gold: #fbbf24;
  --bp-gold-dark: #f59e0b;
  
  /* Dark Theme */
  --bp-dark-bg: #0a0e1a;
  --bp-dark-card: #1a1f2e;
  --bp-dark-border: #2d3748;
  --bp-dark-text: #e5e7eb;
  --bp-dark-text-muted: #9ca3af;
  
  /* Light Theme */
  --bp-light-bg: #f8fafc;
  --bp-light-card: #ffffff;
  --bp-light-border: #e2e8f0;
  --bp-light-text: #1a202c;
  --bp-light-text-muted: #64748b;
  
  /* Status Colors */
  --success: #22c55e;
  --success-dark: #16a34a;
  --warning: #f59e0b;
  --warning-dark: #d97706;
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --info: #3b82f6;
  --info-dark: #2563eb;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0052cc 0%, #0066ff 100%);
  --gradient-secondary: linear-gradient(135deg, #ff4757 0%, #ff6b7a 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #fcd34d 100%);
  --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #1a1f2e 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', monospace;
  
  /* 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);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-fixed: 1200;
  --z-modal-backdrop: 1300;
  --z-modal: 1400;
  --z-popover: 1500;
  --z-tooltip: 1600;
}

/* ============================================
   DARK THEME
============================================ */
.theme-dark {
  --bg: var(--bp-dark-bg);
  --card-bg: var(--bp-dark-card);
  --border: var(--bp-dark-border);
  --text: var(--bp-dark-text);
  --text-muted: var(--bp-dark-text-muted);
}

/* Light Theme (Default) */
.theme-light {
  --bg: var(--bp-light-bg);
  --card-bg: var(--bp-light-card);
  --border: var(--bp-light-border);
  --text: var(--bp-light-text);
  --text-muted: var(--bp-light-text-muted);
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg, var(--bp-light-bg));
  color: var(--text, var(--bp-light-text));
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHY
============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--text);
}

h1 { font-size: 2.5rem; } /* 40px */
h2 { font-size: 2rem; }    /* 32px */
h3 { font-size: 1.75rem; } /* 28px */
h4 { font-size: 1.5rem; }  /* 24px */
h5 { font-size: 1.25rem; } /* 20px */
h6 { font-size: 1rem; }    /* 16px */

p {
  margin-bottom: var(--space-md);
  color: var(--text-muted, var(--bp-light-text-muted));
}

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

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

/* ============================================
   CONTAINER & LAYOUT
============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }
.container-xl { max-width: 1280px; }

.section {
  padding: var(--space-3xl) 0;
}

.section-sm { padding: var(--space-2xl) 0; }
.section-lg { padding: 5rem 0; }

/* ============================================
   GRID SYSTEM
============================================ */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   FLEXBOX UTILITIES
============================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ============================================
   BUTTONS
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: var(--gradient-success);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-gold {
  background: var(--gradient-gold);
  color: var(--bp-dark-bg);
  box-shadow: var(--shadow-md);
  font-weight: 700;
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--bp-primary);
  color: white;
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--card-bg);
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1.125rem 2.25rem;
  font-size: 1.125rem;
}

.btn-xl {
  padding: 1.25rem 2.5rem;
  font-size: 1.25rem;
}

/* ============================================
   CARDS
============================================ */
.card {
  background: var(--card-bg, white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  border: 1px solid var(--border, var(--bp-light-border));
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-flat {
  box-shadow: none;
  border: 1px solid var(--border);
}

.card-elevated {
  box-shadow: var(--shadow-lg);
}

/* ============================================
   BADGES
============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary { background: var(--bp-primary); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-warning { background: var(--warning); color: white; }
.badge-danger { background: var(--danger); color: white; }
.badge-info { background: var(--info); color: white; }

.badge-outline {
  background: transparent;
  border: 2px solid currentColor;
}

/* ============================================
   HEADER & NAVIGATION
============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--card-bg, white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--bp-primary);
}

.nav-link.active {
  color: var(--bp-primary);
}

/* ============================================
   HERO SECTIONS
============================================ */
.hero {
  position: relative;
  padding: 5rem var(--space-lg);
  text-align: center;
  overflow: hidden;
}

.hero-gradient {
  background: var(--gradient-primary);
  color: white;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--space-2xl);
  opacity: 0.95;
}

/* ============================================
   LIVE MATCH WIDGET
============================================ */
.live-match {
  background: var(--card-bg);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--danger);
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: var(--danger);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 700;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.live-dot {
  width: 10px;
  height: 10px;
  background: white;
  border-radius: 50%;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

/* ============================================
   FORMS & INPUTS
============================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  background: var(--card-bg);
  color: var(--text);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--bp-primary);
  box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================
   FLOATING WHATSAPP BUTTON
============================================ */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: var(--z-fixed);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.whatsapp-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
  transition: all var(--transition-base);
  text-decoration: none;
}

.whatsapp-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(37, 211, 102, 0.5);
}

.whatsapp-btn i {
  font-size: 1.5rem;
}

/* ============================================
   FOOTER
============================================ */
.footer {
  background: var(--bp-dark-bg);
  color: var(--bp-dark-text);
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.footer a {
  color: var(--bp-dark-text);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer a:hover {
  opacity: 1;
  color: var(--bp-gold);
}

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

.text-primary { color: var(--bp-primary); }
.text-secondary { color: var(--bp-secondary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }

.bg-primary { background: var(--bp-primary); }
.bg-gradient { background: var(--gradient-primary); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ============================================
   RESPONSIVE BREAKPOINTS
============================================ */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.125rem; }
  
  .container { padding: 0 var(--space-md); }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    display: none;
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================
   ANIMATIONS & TRANSITIONS
============================================ */
.fade-in {
  animation: fadeIn var(--transition-slow) ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp var(--transition-base) ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   BLOG COMPONENTS
============================================ */
.blog-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

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

.blog-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
}

.blog-content {
  padding: 1.5rem;
}

.blog-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.blog-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.post-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.featured-card {
  display: block;
  background: var(--gradient-primary);
  color: white;
  padding: 3rem;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
}

.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.featured-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: white;
}

.featured-content p {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
}

/* ============================================
   PRINT STYLES
============================================ */
@media print {
  .header,
  .footer,
  .whatsapp-float,
  .btn {
    display: none !important;
  }
}