/**
 * BigBunny Game - Layout Stylesheet
 * All classes use prefix: s63d-
 * Mobile-first responsive design
 * Color palette: #0D1117 | #BDB76B | #E0FFFF | #00CED1 | #B2DFDB
 */

/* ========== CSS Variables ========== */
:root {
  /* Color palette */
  --s63d-primary: #00CED1;
  --s63d-secondary: #BDB76B;
  --s63d-accent: #E0FFFF;
  --s63d-highlight: #B2DFDB;
  --s63d-bg: #0D1117;
  --s63d-bg-light: #161B22;
  --s63d-bg-card: #1C2128;
  --s63d-text: #E0FFFF;
  --s63d-text-muted: #B2DFDB;
  --s63d-text-dim: #8B9BA8;
  --s63d-border: #30363D;
  --s63d-shadow: rgba(0, 0, 0, 0.3);

  /* Spacing */
  --s63d-space-xs: 0.4rem;
  --s63d-space-sm: 0.8rem;
  --s63d-space-md: 1.6rem;
  --s63d-space-lg: 2.4rem;
  --s63d-space-xl: 3.2rem;

  /* Border radius */
  --s63d-radius-sm: 0.4rem;
  --s63d-radius-md: 0.8rem;
  --s63d-radius-lg: 1.2rem;
  --s63d-radius-round: 50%;

  /* Transitions */
  --s63d-transition: all 0.3s ease;
  --s63d-transition-fast: all 0.15s ease;

  /* Z-index layers */
  --s63d-z-header: 1000;
  --s63d-z-mobile-nav: 1000;
  --s63d-z-mobile-menu: 9999;
  --s63d-z-modal: 10000;
  --s63d-z-toast: 10001;
}

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

html {
  font-size: 62.5%; /* 1rem = 10px */
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 1.4rem;
  line-height: 1.5;
  color: var(--s63d-text);
  background-color: var(--s63d-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--s63d-primary);
  text-decoration: none;
  transition: var(--s63d-transition-fast);
}

a:hover {
  color: var(--s63d-secondary);
}

/* ========== Layout Containers ========== */
.s63d-container {
  max-width: 430px;
  margin: 0 auto;
  padding: 0 var(--s63d-space-md);
}

.s63d-wrapper {
  width: 100%;
  overflow-x: hidden;
}

.s63d-section {
  padding: var(--s63d-space-lg) 0;
}

.s63d-grid {
  display: grid;
  gap: var(--s63d-space-md);
}

.s63d-flex {
  display: flex;
  gap: var(--s63d-space-sm);
}

/* ========== Header ========== */
.s63d-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--s63d-bg-light);
  border-bottom: 1px solid var(--s63d-border);
  z-index: var(--s63d-z-header);
  transition: var(--s63d-transition);
}

.s63d-header.s63d-scrolled {
  box-shadow: 0 2px 8px var(--s63d-shadow);
  background-color: var(--s63d-bg);
}

.s63d-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s63d-space-sm) var(--s63d-space-md);
  min-height: 56px;
}

.s63d-logo {
  display: flex;
  align-items: center;
  gap: var(--s63d-space-sm);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--s63d-primary);
}

.s63d-logo-img {
  width: 28px;
  height: 28px;
  border-radius: var(--s63d-radius-sm);
}

.s63d-header-actions {
  display: flex;
  align-items: center;
  gap: var(--s63d-space-sm);
}

.s63d-menu-btn {
  background: none;
  border: none;
  color: var(--s63d-text);
  font-size: 2.4rem;
  cursor: pointer;
  padding: var(--s63d-space-xs);
  display: flex;
  align-items: center;
  transition: var(--s63d-transition-fast);
}

.s63d-menu-btn:hover {
  color: var(--s63d-primary);
}

/* ========== Mobile Menu ========== */
.s63d-mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background-color: var(--s63d-bg-light);
  z-index: var(--s63d-z-mobile-menu);
  transition: right 0.3s ease;
  overflow-y: auto;
  box-shadow: -2px 0 8px var(--s63d-shadow);
}

.s63d-mobile-menu.s63d-menu-active {
  right: 0;
}

.s63d-mobile-menu-header {
  padding: var(--s63d-space-md);
  border-bottom: 1px solid var(--s63d-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.s63d-menu-close {
  background: none;
  border: none;
  color: var(--s63d-text);
  font-size: 2.4rem;
  cursor: pointer;
  padding: var(--s63d-space-xs);
}

.s63d-nav-list {
  list-style: none;
  padding: var(--s63d-space-md);
}

.s63d-nav-item {
  margin-bottom: var(--s63d-space-xs);
}

.s63d-nav-link {
  display: block;
  padding: var(--s63d-space-sm) var(--s63d-space-md);
  color: var(--s63d-text);
  border-radius: var(--s63d-radius-sm);
  transition: var(--s63d-transition-fast);
  font-size: 1.5rem;
}

.s63d-nav-link:hover,
.s63d-nav-link.s63d-active {
  background-color: var(--s63d-bg-card);
  color: var(--s63d-primary);
}

/* ========== Buttons ========== */
.s63d-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--s63d-space-sm) var(--s63d-space-md);
  font-size: 1.4rem;
  font-weight: 600;
  border: none;
  border-radius: var(--s63d-radius-sm);
  cursor: pointer;
  transition: var(--s63d-transition-fast);
  min-height: 44px;
  min-width: 44px;
  text-align: center;
}

.s63d-btn-primary {
  background: linear-gradient(135deg, var(--s63d-primary), #008B8B);
  color: var(--s63d-bg);
  box-shadow: 0 2px 4px rgba(0, 206, 209, 0.3);
}

.s63d-btn-primary:hover {
  background: linear-gradient(135deg, #00B8BB, var(--s63d-primary));
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 206, 209, 0.4);
}

.s63d-btn-secondary {
  background: linear-gradient(135deg, var(--s63d-secondary), #A0A060);
  color: var(--s63d-bg);
  box-shadow: 0 2px 4px rgba(189, 183, 107, 0.3);
}

.s63d-btn-secondary:hover {
  background: linear-gradient(135deg, #CDCD8E, var(--s63d-secondary));
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(189, 183, 107, 0.4);
}

.s63d-btn-outline {
  background: transparent;
  border: 2px solid var(--s63d-primary);
  color: var(--s63d-primary);
}

.s63d-btn-outline:hover {
  background-color: var(--s63d-primary);
  color: var(--s63d-bg);
}

.s63d-btn-sm {
  padding: var(--s63d-space-xs) var(--s63d-space-sm);
  font-size: 1.2rem;
  min-height: 36px;
}

.s63d-btn-lg {
  padding: var(--s63d-space-md) var(--s63d-space-lg);
  font-size: 1.6rem;
  min-height: 52px;
}

/* ========== Cards ========== */
.s63d-card {
  background-color: var(--s63d-bg-card);
  border-radius: var(--s63d-radius-md);
  padding: var(--s63d-space-md);
  border: 1px solid var(--s63d-border);
  transition: var(--s63d-transition-fast);
}

.s63d-card:hover {
  border-color: var(--s63d-primary);
  box-shadow: 0 4px 12px var(--s63d-shadow);
}

.s63d-card-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--s63d-text);
  margin-bottom: var(--s63d-space-sm);
}

.s63d-card-text {
  color: var(--s63d-text-muted);
  line-height: 1.6;
}

/* ========== Main Content ========== */
.s63d-main {
  margin-top: 56px;
  padding-bottom: 80px; /* Space for mobile bottom nav */
  min-height: calc(100vh - 136px);
}

/* ========== Carousel ========== */
.s63d-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--s63d-radius-lg);
  margin-bottom: var(--s63d-space-lg);
}

.s63d-carousel-inner {
  position: relative;
  height: 200px;
}

.s63d-carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
  cursor: pointer;
}

.s63d-carousel-slide.s63d-active {
  opacity: 1;
}

.s63d-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.s63d-carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--s63d-space-sm);
  padding: var(--s63d-space-md) 0;
}

.s63d-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--s63d-radius-round);
  background-color: var(--s63d-border);
  cursor: pointer;
  transition: var(--s63d-transition-fast);
}

.s63d-carousel-dot.s63d-active {
  background-color: var(--s63d-primary);
  width: 24px;
}

/* ========== Game Grid ========== */
.s63d-game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s63d-space-sm);
  margin-bottom: var(--s63d-space-lg);
}

.s63d-game-item {
  cursor: pointer;
  transition: var(--s63d-transition-fast);
}

.s63d-game-item:hover {
  transform: scale(1.05);
}

.s63d-game-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--s63d-radius-sm);
  border: 1px solid var(--s63d-border);
}

.s63d-game-name {
  font-size: 1.1rem;
  color: var(--s63d-text-muted);
  margin-top: var(--s63d-space-xs);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========== Bottom Navigation ========== */
.s63d-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(180deg, var(--s63d-bg-light), var(--s63d-bg));
  border-top: 2px solid var(--s63d-border);
  z-index: var(--s63d-z-mobile-nav);
  box-shadow: 0 -2px 8px var(--s63d-shadow);
}

.s63d-bottom-nav-inner {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 64px;
  max-width: 430px;
  margin: 0 auto;
}

.s63d-bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: var(--s63d-space-xs);
  min-height: 60px;
  cursor: pointer;
  transition: var(--s63d-transition-fast);
  color: var(--s63d-text-muted);
  border-radius: var(--s63d-radius-sm);
}

.s63d-bottom-nav-item:hover,
.s63d-bottom-nav-item.s63d-active {
  color: var(--s63d-primary);
  background-color: rgba(0, 206, 209, 0.1);
}

.s63d-bottom-nav-icon {
  font-size: 2.4rem;
  line-height: 1;
}

.s63d-bottom-nav-text {
  font-size: 1.0rem;
  font-weight: 600;
  text-align: center;
}

/* ========== Footer ========== */
.s63d-footer {
  background-color: var(--s63d-bg-light);
  border-top: 1px solid var(--s63d-border);
  padding: var(--s63d-space-lg) 0;
  margin-top: var(--s63d-space-xl);
}

.s63d-partners {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s63d-space-md);
  margin-bottom: var(--s63d-space-lg);
}

.s63d-partner-img {
  width: 60px;
  height: 40px;
  object-fit: contain;
  opacity: 0.6;
  transition: var(--s63d-transition-fast);
}

.s63d-partner-img:hover {
  opacity: 1;
}

.s63d-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--s63d-space-md);
  margin-bottom: var(--s63d-space-md);
  font-size: 1.3rem;
}

.s63d-footer-link {
  color: var(--s63d-text-muted);
}

.s63d-footer-link:hover {
  color: var(--s63d-primary);
}

.s63d-copyright {
  text-align: center;
  color: var(--s63d-text-dim);
  font-size: 1.2rem;
  padding-top: var(--s63d-space-md);
  border-top: 1px solid var(--s63d-border);
}

/* ========== Utilities ========== */
.s63d-text-center {
  text-align: center;
}

.s63d-text-primary {
  color: var(--s63d-primary);
}

.s63d-text-secondary {
  color: var(--s63d-secondary);
}

.s63d-mb-sm {
  margin-bottom: var(--s63d-space-sm);
}

.s63d-mb-md {
  margin-bottom: var(--s63d-space-md);
}

.s63d-mb-lg {
  margin-bottom: var(--s63d-space-lg);
}

.s63d-mt-sm {
  margin-top: var(--s63d-space-sm);
}

.s63d-mt-md {
  margin-top: var(--s63d-space-md);
}

.s63d-mt-lg {
  margin-top: var(--s63d-space-lg);
}

/* ========== Typography ========== */
.s63d-h1 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--s63d-text);
  margin-bottom: var(--s63d-space-md);
}

.s63d-h2 {
  font-size: 2.0rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--s63d-text);
  margin-bottom: var(--s63d-space-sm);
}

.s63d-h3 {
  font-size: 1.8rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--s63d-text);
  margin-bottom: var(--s63d-space-sm);
}

.s63d-section-title {
  font-size: 2.0rem;
  font-weight: 700;
  color: var(--s63d-primary);
  margin-bottom: var(--s63d-space-md);
  display: flex;
  align-items: center;
  gap: var(--s63d-space-sm);
}

.s63d-section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, var(--s63d-primary), var(--s63d-secondary));
  border-radius: var(--s63d-radius-sm);
}

/* ========== Toast Notification ========== */
.s63d-toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background-color: var(--s63d-bg-card);
  color: var(--s63d-text);
  padding: var(--s63d-space-md) var(--s63d-space-lg);
  border-radius: var(--s63d-radius-md);
  box-shadow: 0 4px 12px var(--s63d-shadow);
  z-index: var(--s63d-z-toast);
  opacity: 0;
  transition: all 0.3s ease;
  border: 1px solid var(--s63d-primary);
}

.s63d-toast.s63d-show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ========== Responsive ========== */
@media (min-width: 769px) {
  .s63d-bottom-nav {
    display: none;
  }

  .s63d-main {
    padding-bottom: 0;
  }

  .s63d-game-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 58%;
  }
}

@media (max-width: 360px) {
  .s63d-game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}