/**
 * BigWin Casino - Main Stylesheet
 * All classes use prefix: ui37-
 * Color Scheme: #DC143C (Crimson Red) | #1E1E1E (Dark Gray)
 * Mobile-first responsive design
 */

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

:root {
  --ui37-primary: #DC143C;
  --ui37-primary-dark: #B01030;
  --ui37-primary-light: #FF1744;
  --ui37-bg-dark: #1E1E1E;
  --ui37-bg-darker: #141414;
  --ui37-bg-light: #2A2A2A;
  --ui37-text-primary: #FFFFFF;
  --ui37-text-secondary: #CCCCCC;
  --ui37-text-muted: #999999;
  --ui37-border: #333333;
  --ui37-shadow: rgba(220, 20, 60, 0.3);
  --ui37-overlay: rgba(0, 0, 0, 0.8);
  font-size: 62.5%; /* 1rem = 10px */
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  font-size: 1.6rem;
  line-height: 1.5;
  color: var(--ui37-text-primary);
  background-color: var(--ui37-bg-dark);
  overflow-x: hidden;
}

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

a {
  color: var(--ui37-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--ui37-primary-light);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.ui37-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--ui37-bg-darker);
  border-bottom: 2px solid var(--ui37-primary);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.ui37-header-scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.ui37-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ui37-logo-section {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.ui37-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.ui37-site-name {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--ui37-text-primary);
  letter-spacing: 0.5px;
}

.ui37-header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.ui37-btn {
  padding: 0.8rem 1.6rem;
  border: none;
  border-radius: 8px;
  font-size: 1.4rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-height: 44px;
}

.ui37-btn-primary {
  background: linear-gradient(135deg, var(--ui37-primary), var(--ui37-primary-dark));
  color: var(--ui37-text-primary);
  box-shadow: 0 4px 12px var(--ui37-shadow);
}

.ui37-btn-primary:hover {
  background: linear-gradient(135deg, var(--ui37-primary-light), var(--ui37-primary));
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--ui37-shadow);
}

.ui37-btn-outline {
  background: transparent;
  border: 2px solid var(--ui37-primary);
  color: var(--ui37-primary);
}

.ui37-btn-outline:hover {
  background: var(--ui37-primary);
  color: var(--ui37-text-primary);
}

.ui37-menu-toggle {
  background: transparent;
  border: none;
  color: var(--ui37-text-primary);
  font-size: 2.4rem;
  cursor: pointer;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Navigation */
.ui37-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--ui37-overlay);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.ui37-overlay-active {
  opacity: 1;
  visibility: visible;
}

.ui37-mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--ui37-bg-darker);
  z-index: 9999;
  padding: 2rem;
  overflow-y: auto;
  transition: right 0.3s ease;
  border-left: 2px solid var(--ui37-primary);
}

.ui37-nav-open {
  right: 0;
}

.ui37-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--ui37-border);
}

.ui37-nav-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--ui37-primary);
}

.ui37-nav-close {
  background: transparent;
  border: none;
  color: var(--ui37-text-primary);
  font-size: 2.4rem;
  cursor: pointer;
  padding: 0.5rem;
}

.ui37-nav-menu {
  list-style: none;
}

.ui37-nav-item {
  margin-bottom: 0.5rem;
}

.ui37-nav-link {
  display: block;
  padding: 1.2rem 1.5rem;
  color: var(--ui37-text-primary);
  font-size: 1.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.ui37-nav-link:hover,
.ui37-nav-link.ui37-active {
  background: var(--ui37-bg-light);
  color: var(--ui37-primary);
  transform: translateX(5px);
}

/* ========================================
   BOTTOM NAVIGATION (Mobile Only)
   ======================================== */

.ui37-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, var(--ui37-bg-darker) 0%, #0A0A0A 100%);
  border-top: 2px solid var(--ui37-primary);
  box-shadow: 0 -2px 15px rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 60px;
  padding: 0 0.5rem;
}

.ui37-bottom-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ui37-text-secondary);
  cursor: pointer;
  min-width: 60px;
  min-height: 60px;
  transition: all 0.3s ease;
  position: relative;
}

.ui37-bottom-nav-btn:hover,
.ui37-bottom-nav-btn.ui37-active {
  color: var(--ui37-primary);
  transform: scale(1.1);
}

.ui37-bottom-nav-icon {
  font-size: 2.2rem;
  margin-bottom: 0.2rem;
}

.ui37-bottom-nav-text {
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* Hide bottom nav on desktop */
@media (min-width: 769px) {
  .ui37-bottom-nav {
    display: none;
  }
}

/* Add padding to main content for bottom nav on mobile */
@media (max-width: 768px) {
  main {
    padding-bottom: 80px;
  }
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.ui37-main {
  padding-top: 70px;
  min-height: 100vh;
}

.ui37-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.ui37-section {
  padding: 3rem 0;
}

.ui37-section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--ui37-text-primary);
  position: relative;
  padding-bottom: 1rem;
}

.ui37-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--ui37-primary), transparent);
}

/* ========================================
   CAROUSEL
   ======================================== */

.ui37-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 3rem;
}

.ui37-carousel-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
}

.ui37-carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.ui37-slide-active {
  opacity: 1;
}

.ui37-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.ui37-carousel-dots {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.8rem;
  z-index: 10;
}

.ui37-carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.ui37-dot-active {
  background: var(--ui37-primary);
  width: 24px;
  border-radius: 5px;
}

/* ========================================
   GAME GRID
   ======================================== */

.ui37-game-category {
  margin-bottom: 3rem;
}

.ui37-category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem 1.5rem;
  background: var(--ui37-bg-light);
  border-left: 4px solid var(--ui37-primary);
  border-radius: 8px;
}

.ui37-category-icon {
  font-size: 2.4rem;
  color: var(--ui37-primary);
}

.ui37-category-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ui37-text-primary);
  text-transform: uppercase;
}

.ui37-game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.5rem;
}

.ui37-game-card {
  background: var(--ui37-bg-light);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.ui37-game-card:hover {
  transform: translateY(-5px);
  border-color: var(--ui37-primary);
  box-shadow: 0 8px 20px var(--ui37-shadow);
}

.ui37-game-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.ui37-game-name {
  padding: 1rem;
  font-size: 1.3rem;
  font-weight: 600;
  text-align: center;
  color: var(--ui37-text-primary);
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================
   CONTENT SECTIONS
   ======================================== */

.ui37-content-box {
  background: var(--ui37-bg-light);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
  border-left: 4px solid var(--ui37-primary);
}

.ui37-content-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--ui37-text-primary);
}

.ui37-content-text {
  font-size: 1.5rem;
  line-height: 1.7;
  color: var(--ui37-text-secondary);
  margin-bottom: 1rem;
}

.ui37-content-text strong {
  color: var(--ui37-primary);
  font-weight: 700;
}

.ui37-list {
  list-style: none;
  margin: 1.5rem 0;
}

.ui37-list-item {
  padding: 1rem 0 1rem 2.5rem;
  position: relative;
  font-size: 1.5rem;
  color: var(--ui37-text-secondary);
}

.ui37-list-item::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--ui37-primary);
  font-size: 1.2rem;
}

/* ========================================
   FAQ SECTION
   ======================================== */

.ui37-faq-container {
  margin: 2rem 0;
}

.ui37-faq-item {
  background: var(--ui37-bg-light);
  border-radius: 12px;
  margin-bottom: 1rem;
  overflow: hidden;
  border: 1px solid var(--ui37-border);
}

.ui37-faq-question {
  padding: 1.5rem 2rem;
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--ui37-text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.ui37-faq-question:hover {
  background: var(--ui37-bg-darker);
}

.ui37-faq-icon {
  font-size: 2rem;
  color: var(--ui37-primary);
  transition: transform 0.3s ease;
}

.ui37-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 2rem;
  font-size: 1.5rem;
  color: var(--ui37-text-secondary);
  line-height: 1.7;
}

.ui37-faq-open {
  max-height: 500px;
  padding: 0 2rem 2rem;
}

/* ========================================
   FOOTER
   ======================================== */

.ui37-footer {
  background: var(--ui37-bg-darker);
  border-top: 2px solid var(--ui37-primary);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.ui37-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.ui37-footer-link {
  font-size: 1.4rem;
  color: var(--ui37-text-secondary);
  transition: color 0.3s ease;
}

.ui37-footer-link:hover {
  color: var(--ui37-primary);
}

.ui37-partners {
  margin: 3rem 0;
}

.ui37-partners-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--ui37-text-primary);
  margin-bottom: 2rem;
}

.ui37-partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.ui37-partner-logo {
  width: 100%;
  height: auto;
  opacity: 0.7;
  transition: opacity 0.3s ease;
  filter: grayscale(50%);
}

.ui37-partner-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.ui37-copyright {
  text-align: center;
  font-size: 1.3rem;
  color: var(--ui37-text-muted);
  padding-top: 2rem;
  border-top: 1px solid var(--ui37-border);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.ui37-text-center {
  text-align: center;
}

.ui37-text-primary {
  color: var(--ui37-primary);
}

.ui37-mt-1 { margin-top: 1rem; }
.ui37-mt-2 { margin-top: 2rem; }
.ui37-mt-3 { margin-top: 3rem; }
.ui37-mb-1 { margin-bottom: 1rem; }
.ui37-mb-2 { margin-bottom: 2rem; }
.ui37-mb-3 { margin-bottom: 3rem; }

.ui37-notification {
  position: fixed;
  top: 90px;
  right: 20px;
  background: var(--ui37-primary);
  color: var(--ui37-text-primary);
  padding: 1.2rem 2rem;
  border-radius: 8px;
  font-size: 1.4rem;
  font-weight: 600;
  box-shadow: 0 4px 12px var(--ui37-shadow);
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease;
  z-index: 10000;
}

.ui37-notification-show {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  .ui37-header-inner {
    padding: 1rem;
  }

  .ui37-site-name {
    font-size: 1.6rem;
  }

  .ui37-btn {
    padding: 0.7rem 1.2rem;
    font-size: 1.3rem;
  }

  .ui37-section-title {
    font-size: 2rem;
  }

  .ui37-game-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
  }

  .ui37-content-box {
    padding: 1.5rem;
  }
}

@media (min-width: 769px) {
  .ui37-menu-toggle {
    display: none;
  }

  .ui37-game-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
}