/**
 * PH Bingo Theme Stylesheet
 * All classes use ui7b- prefix for namespace isolation
 * Color Palette: #FFEBCD, #A9A9A9, #8FBC8F, #2E8B57, #0D1117
 * Mobile-first responsive design
 */

/* CSS Variables */
:root {
  --ui7b-bg-dark: #0D1117;
  --ui7b-bg-secondary: #1a1f26;
  --ui7b-bg-card: #242c35;
  --ui7b-primary: #2E8B57;
  --ui7b-primary-light: #8FBC8F;
  --ui7b-accent: #FFEBCD;
  --ui7b-text-primary: #FFEBCD;
  --ui7b-text-secondary: #A9A9A9;
  --ui7b-border: #3a4450;
  --ui7b-shadow: rgba(0, 0, 0, 0.3);
  --ui7b-gradient: linear-gradient(135deg, #2E8B57 0%, #8FBC8F 100%);
  --ui7b-header-height: 60px;
  --ui7b-bottom-nav-height: 60px;
}

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

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 1.6rem;
  line-height: 1.5;
  color: var(--ui7b-text-primary);
  background-color: var(--ui7b-bg-dark);
  min-height: 100vh;
  padding-bottom: var(--ui7b-bottom-nav-height);
}

@media (min-width: 769px) {
  body {
    padding-bottom: 0;
  }
}

/* Container */
.ui7b-container {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 769px) {
  .ui7b-container {
    max-width: 1200px;
  }
}

/* Header */
.ui7b-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--ui7b-header-height);
  background: var(--ui7b-bg-dark);
  border-bottom: 1px solid var(--ui7b-border);
  z-index: 1000;
  transition: all 0.3s ease;
}

.ui7b-header-scrolled {
  box-shadow: 0 2px 10px var(--ui7b-shadow);
}

.ui7b-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 769px) {
  .ui7b-header-inner {
    max-width: 1200px;
  }
}

/* Logo */
.ui7b-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
  color: var(--ui7b-text-primary);
}

.ui7b-logo img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.ui7b-logo-text {
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--ui7b-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Header Buttons */
.ui7b-header-btns {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.ui7b-btn-header {
  padding: 0.6rem 1.2rem;
  font-size: 1.2rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.ui7b-btn-register {
  background: var(--ui7b-primary);
  color: white;
}

.ui7b-btn-register:hover {
  background: var(--ui7b-primary-light);
  transform: translateY(-2px);
}

.ui7b-btn-login {
  background: transparent;
  color: var(--ui7b-primary-light);
  border: 2px solid var(--ui7b-primary-light);
}

.ui7b-btn-login:hover {
  background: var(--ui7b-primary-light);
  color: var(--ui7b-bg-dark);
}

/* Mobile Menu Toggle */
.ui7b-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 0.5rem;
}

@media (min-width: 769px) {
  .ui7b-menu-toggle {
    display: none;
  }
}

.ui7b-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ui7b-text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.ui7b-menu-toggle:hover span {
  background: var(--ui7b-primary);
}

/* Mobile Menu */
.ui7b-mobile-menu {
  position: fixed;
  top: var(--ui7b-header-height);
  left: -100%;
  width: 100%;
  height: calc(100vh - var(--ui7b-header-height));
  background: var(--ui7b-bg-secondary);
  z-index: 9999;
  transition: left 0.3s ease;
  overflow-y: auto;
  padding: 2rem 0;
}

.ui7b-mobile-menu.x27b3-menu-open {
  left: 0;
}

.ui7b-menu-list {
  list-style: none;
  padding: 0 1.5rem;
}

.ui7b-menu-item {
  margin-bottom: 0.5rem;
}

.ui7b-menu-link {
  display: block;
  padding: 1rem 1.5rem;
  color: var(--ui7b-text-primary);
  text-decoration: none;
  font-size: 1.6rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.ui7b-menu-link:hover {
  background: var(--ui7b-bg-card);
  color: var(--ui7b-primary);
  padding-left: 2rem;
}

/* Main Content */
.ui7b-main {
  margin-top: var(--ui7b-header-height);
  padding: 2rem 0;
  min-height: calc(100vh - var(--ui7b-header-height) - var(--ui7b-bottom-nav-height));
}

@media (min-width: 769px) {
  .ui7b-main {
    min-height: calc(100vh - var(--ui7b-header-height));
  }
}

/* Carousel */
.ui7b-carousel {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 2rem;
}

@media (min-width: 769px) {
  .ui7b-carousel {
    height: 350px;
  }
}

.ui7b-carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.ui7b-carousel-slide.ui7b-slide-active {
  opacity: 1;
}

.ui7b-carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.ui7b-carousel-indicators {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.8rem;
}

.ui7b-carousel-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 235, 205, 0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.ui7b-carousel-indicator.ui7b-indicator-active,
.ui7b-carousel-indicator:hover {
  background: var(--ui7b-primary);
  transform: scale(1.2);
}

/* Typography */
.ui7b-h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--ui7b-text-primary);
  line-height: 1.3;
}

.ui7b-h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: var(--ui7b-text-primary);
}

.ui7b-h3 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--ui7b-primary-light);
}

.ui7b-p {
  margin-bottom: 1rem;
  color: var(--ui7b-text-secondary);
}

.ui7b-text-center {
  text-align: center;
}

/* Cards */
.ui7b-card {
  background: var(--ui7b-bg-card);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--ui7b-border);
}

.ui7b-card-title {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--ui7b-primary-light);
}

/* Buttons */
.ui7b-btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  background: var(--ui7b-gradient);
  color: white;
}

.ui7b-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(46, 139, 87, 0.4);
}

.ui7b-btn-large {
  padding: 1.2rem 2.5rem;
  font-size: 1.6rem;
}

.ui7b-btn-block {
  display: block;
  width: 100%;
}

/* Game Grid */
.ui7b-game-section {
  margin-bottom: 3rem;
}

.ui7b-section-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--ui7b-primary-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ui7b-game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

@media (min-width: 769px) {
  .ui7b-game-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
  }
}

.ui7b-game-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.ui7b-game-item:hover {
  transform: scale(1.05);
}

.ui7b-game-icon {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 10px;
  overflow: hidden;
  background: var(--ui7b-bg-secondary);
  border: 2px solid var(--ui7b-border);
  transition: all 0.3s ease;
}

.ui7b-game-item:hover .ui7b-game-icon {
  border-color: var(--ui7b-primary);
  box-shadow: 0 0 15px rgba(46, 139, 87, 0.5);
}

.ui7b-game-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ui7b-game-name {
  font-size: 1rem;
  font-weight: 500;
  color: var(--ui7b-text-secondary);
  text-align: center;
  line-height: 1.2;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Link Styles */
.ui7b-link {
  color: var(--ui7b-primary-light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.ui7b-link:hover {
  color: var(--ui7b-primary);
  text-decoration: underline;
}

/* Bottom Navigation */
.ui7b-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--ui7b-bottom-nav-height);
  background: var(--ui7b-bg-secondary);
  border-top: 2px solid var(--ui7b-primary);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  padding: 0.5rem 0;
}

@media (min-width: 769px) {
  .ui7b-bottom-nav {
    display: none;
  }
}

.ui7b-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  min-width: 60px;
  min-height: 60px;
  justify-content: center;
  text-decoration: none;
  color: var(--ui7b-text-secondary);
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  background: none;
  padding: 0.5rem;
}

.ui7b-nav-btn:hover {
  color: var(--ui7b-primary);
  transform: scale(1.1);
}

.ui7b-nav-btn.ui7b-nav-active {
  color: var(--ui7b-primary);
}

.ui7b-nav-icon {
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ui7b-nav-text {
  font-size: 1rem;
  font-weight: 500;
}

/* Footer */
.ui7b-footer {
  background: var(--ui7b-bg-secondary);
  padding: 3rem 0;
  margin-top: 3rem;
  border-top: 1px solid var(--ui7b-border);
}

.ui7b-footer-content {
  max-width: 430px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 769px) {
  .ui7b-footer-content {
    max-width: 1200px;
  }
}

.ui7b-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.ui7b-footer-link {
  color: var(--ui7b-text-secondary);
  text-decoration: none;
  font-size: 1.4rem;
  transition: color 0.3s ease;
}

.ui7b-footer-link:hover {
  color: var(--ui7b-primary);
}

.ui7b-partners {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.ui7b-partner img {
  height: 30px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.ui7b-partner img:hover {
  opacity: 1;
}

.ui7b-copyright {
  text-align: center;
  color: var(--ui7b-text-secondary);
  font-size: 1.2rem;
}

/* Utility Classes */
.ui7b-mt-1 { margin-top: 1rem; }
.ui7b-mt-2 { margin-top: 2rem; }
.ui7b-mt-3 { margin-top: 3rem; }
.ui7b-mb-1 { margin-bottom: 1rem; }
.ui7b-mb-2 { margin-bottom: 2rem; }
.ui7b-mb-3 { margin-bottom: 3rem; }

.ui7b-text-primary { color: var(--ui7b-text-primary); }
.ui7b-text-secondary { color: var(--ui7b-text-secondary); }
.ui7b-text-accent { color: var(--ui7b-accent); }

/* Responsive Utilities */
@media (max-width: 768px) {
  .ui7b-hide-mobile {
    display: none;
  }
}

@media (min-width: 769px) {
  .ui7b-hide-desktop {
    display: none;
  }
}

/* Animation */
@keyframes ui7b-fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ui7b-animate {
  animation: ui7b-fadeIn 0.6s ease forwards;
}