/* ==========================================
   SpinBeyondUK - Main Styles
   Unique Design System for UK Casino Affiliate
   ========================================== */

/* ==========================================
   CSS Custom Properties / Design Tokens
   ========================================== */
:root {
  /* Color Palette - Deep Navy & Electric Teal Theme */
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #141b3d;
  --color-bg-tertiary: #1e2749;
  --color-bg-card: #1a2240;
  --color-bg-overlay: rgba(10, 14, 39, 0.95);

  /* Accent Colors */
  --color-accent-primary: #00f5d4;
  --color-accent-secondary: #ff006e;
  --color-accent-tertiary: #8338ec;
  --color-accent-lime: #ccff00;

  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #b8c5d6;
  --color-text-muted: #7a8ba3;
  --color-text-dark: #0a0e27;

  /* UI Colors */
  --color-border: #2d3a5c;
  --color-border-light: #3d4a6c;
  --color-success: #00ff88;
  --color-warning: #ffb800;
  --color-danger: #ff4d6d;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #00f5d4 0%, #00b4d8 100%);
  --gradient-secondary: linear-gradient(135deg, #ff006e 0%, #8338ec 100%);
  --gradient-hero: linear-gradient(135deg, #0a0e27 0%, #1e2749 50%, #0a0e27 100%);
  --gradient-card: linear-gradient(180deg, #1a2240 0%, #141b3d 100%);

  /* Typography */
  --font-heading: 'Rajdhani', 'Exo 2', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(0, 245, 212, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ==========================================
   Base Styles & Reset
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-accent-lime);
}

strong {
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-wide {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ==========================================
   Header & Navigation
   ========================================== */
.site-header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
  background: rgba(20, 27, 61, 0.9);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1440px;
  margin: 0 auto;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  align-items: center;
}

.nav-menu a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--text-base);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-menu a:hover {
  color: var(--color-accent-primary);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--spacing-sm);
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-dark);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  color: var(--color-text-dark);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--color-text-primary);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-text-primary);
}

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

.btn-outline:hover {
  background: var(--color-accent-primary);
  color: var(--color-text-dark);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-lg);
}

/* ==========================================
   Cards
   ========================================== */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

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

.card-header {
  margin-bottom: var(--spacing-lg);
}

.card-body {
  margin-bottom: var(--spacing-lg);
}

.card-footer {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ==========================================
   Casino Card Component
   ========================================== */
.casino-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.casino-card:hover {
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 30px rgba(0, 245, 212, 0.2);
  transform: translateY(-4px);
}

.casino-card-image {
  position: relative;
  height: 200px;
  background: var(--color-bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.casino-card-image img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
}

.casino-rating {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--gradient-primary);
  color: var(--color-text-dark);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: 4px;
}

.casino-card-content {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.casino-name {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.casino-bonus {
  color: var(--color-accent-lime);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.casino-features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
  flex: 1;
}

.casino-features li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.casino-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: bold;
}

.casino-card-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-lg);
  font-size: var(--text-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent-primary);
}

.responsible-gaming {
  background: var(--color-bg-tertiary);
  border: 2px solid var(--color-warning);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.responsible-gaming h4 {
  color: var(--color-warning);
  margin-bottom: var(--spacing-md);
}

.rg-logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  align-items: center;
  margin-top: var(--spacing-lg);
}

.rg-logos a {
  display: block;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
  padding: var(--spacing-sm);
  background: white;
  border-radius: var(--radius-md);
}

.rg-logos a:hover {
  opacity: 1;
}

.rg-logos img {
  height: 50px;
  width: auto;
  display: block;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.age-notice {
  background: var(--gradient-secondary);
  color: var(--color-text-primary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  text-align: center;
}

/* ==========================================
   Modals (Age Gate & Cookie Consent)
   ========================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-overlay);
  z-index: var(--z-modal-backdrop);
  backdrop-filter: blur(10px);
}

.modal-overlay.active {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn var(--transition-base);
}

.modal {
  background: var(--gradient-card);
  border: 2px solid var(--color-accent-primary);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: slideUp var(--transition-slow);
  text-align: center;
}

.modal-icon {
  font-size: var(--text-6xl);
  margin-bottom: var(--spacing-lg);
}

.modal h2 {
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-md);
}

.modal p {
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-secondary);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Cookie Banner */
.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-secondary);
  border-top: 2px solid var(--color-accent-primary);
  padding: var(--spacing-lg);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-xl);
}

.cookie-banner.active {
  display: block;
  animation: slideUp var(--transition-base);
}

.cookie-content {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cookie-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
  }

  .header-container {
    padding: var(--spacing-md);
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    gap: var(--spacing-md);
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .cookie-content {
    flex-direction: column;
    text-align: center;
  }

  .casino-card-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container,
  .container-wide {
    padding: 0 var(--spacing-md);
  }

  .btn {
    width: 100%;
  }

  .modal {
    width: 95%;
    padding: var(--spacing-lg);
  }
}