/*
 * Lucky Game APK - Core Stylesheet
 * All classes use "vdf4-" prefix for namespace isolation
 * Color palette: #1A1A2E | #FDF5E6 | #8B4513 | #F5F5F5 | #D2691E
 * Mobile-first: max-width 430px, root font 62.5%
 */

/* === CSS Variables === */
:root {
  --vdf4-primary: #D2691E;
  --vdf4-bg: #1A1A2E;
  --vdf4-text: #FDF5E6;
  --vdf4-accent: #8B4513;
  --vdf4-light: #F5F5F5;
  --vdf4-gold: #F0C040;
  --vdf4-dark-surface: #252540;
  --vdf4-card-bg: #2A2A4A;
  --vdf4-border: #3A3A5A;
  --vdf4-success: #4CAF50;
  --vdf4-danger: #E74C3C;
  --vdf4-gradient: linear-gradient(135deg, #D2691E, #8B4513);
  --vdf4-shadow: 0 4px 12px rgba(0,0,0,0.3);
  --vdf4-radius: 8px;
  --vdf4-radius-lg: 12px;
  --vdf4-header-h: 56px;
  --vdf4-bottom-nav-h: 60px;
  font-size: 62.5%;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--vdf4-bg);
  color: var(--vdf4-text);
  line-height: 1.5rem;
  font-size: 1.4rem;
  overflow-x: hidden;
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
}

a {
  color: var(--vdf4-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--vdf4-gold);
}

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

/* === Header === */
.vdf4-header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: var(--vdf4-header-h);
  background: var(--vdf4-bg);
  border-bottom: 1px solid var(--vdf4-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.2rem;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(26,26,46,0.95);
}

.vdf4-logo-area {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
}

.vdf4-logo-area img {
  width: 28px;
  height: 28px;
  border-radius: 4px;
}

.vdf4-logo-area span {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--vdf4-primary);
  white-space: nowrap;
}

.vdf4-header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.vdf4-btn-register {
  background: var(--vdf4-gradient);
  color: #fff;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: var(--vdf4-radius);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.vdf4-btn-register:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(210,105,30,0.4);
}

.vdf4-btn-login {
  background: transparent;
  color: var(--vdf4-primary);
  border: 1.5px solid var(--vdf4-primary);
  padding: 0.55rem 1.1rem;
  border-radius: var(--vdf4-radius);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.vdf4-btn-login:hover {
  background: var(--vdf4-primary);
  color: #fff;
}

.vdf4-menu-toggle {
  background: none;
  border: none;
  color: var(--vdf4-text);
  font-size: 2rem;
  cursor: pointer;
  padding: 0.4rem;
  display: flex;
  align-items: center;
}

/* === Mobile Menu === */
.vdf4-mobile-menu {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%) translateX(-100%);
  width: 100%;
  max-width: 430px;
  height: 100vh;
  background: var(--vdf4-bg);
  z-index: 9999;
  transition: transform 0.3s ease;
  visibility: hidden;
  overflow-y: auto;
  padding: 2rem 1.5rem;
}

.vdf4-mobile-menu.vdf4-menu-open {
  transform: translateX(-50%) translateX(0);
  visibility: visible;
}

.vdf4-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  z-index: 9998;
}

.vdf4-menu-close {
  background: none;
  border: none;
  color: var(--vdf4-text);
  font-size: 2.4rem;
  cursor: pointer;
  position: absolute;
  top: 1rem;
  right: 1.2rem;
}

.vdf4-menu-links {
  list-style: none;
  margin-top: 3rem;
}

.vdf4-menu-links li {
  border-bottom: 1px solid var(--vdf4-border);
}

.vdf4-menu-links a {
  display: block;
  padding: 1.2rem 0;
  color: var(--vdf4-text);
  font-size: 1.5rem;
  transition: color 0.2s;
}

.vdf4-menu-links a:hover {
  color: var(--vdf4-primary);
}

/* === Main Content === */
.vdf4-main {
  padding-top: var(--vdf4-header-h);
  min-height: 100vh;
}

/* === Carousel === */
.vdf4-carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 0 0 var(--vdf4-radius-lg) var(--vdf4-radius-lg);
}

.vdf4-carousel-slide {
  display: none;
  width: 100%;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

.vdf4-carousel-slide:first-child {
  display: block;
}

.vdf4-carousel-slide img {
  width: 100%;
  height: auto;
  min-height: 180px;
  object-fit: cover;
}

.vdf4-carousel-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.vdf4-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  border: none;
  transition: background 0.3s;
}

.vdf4-dot-active,
.vdf4-carousel-dot:hover {
  background: var(--vdf4-primary);
}

/* === Section Titles === */
.vdf4-section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--vdf4-text);
  padding: 1.5rem 1.2rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.vdf4-section-title i,
.vdf4-section-title .material-icons {
  color: var(--vdf4-primary);
  font-size: 2rem;
}

/* === Game Grid === */
.vdf4-game-section {
  padding: 0.5rem 1rem 1rem;
}

.vdf4-game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.vdf4-game-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform 0.2s;
  text-align: center;
}

.vdf4-game-card:hover {
  transform: translateY(-2px);
}

.vdf4-game-card img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--vdf4-radius);
  object-fit: cover;
  border: 2px solid var(--vdf4-border);
  transition: border-color 0.2s;
}

.vdf4-game-card:hover img {
  border-color: var(--vdf4-primary);
}

.vdf4-game-card span {
  font-size: 1rem;
  color: var(--vdf4-light);
  margin-top: 0.3rem;
  line-height: 1.2rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === Content Sections === */
.vdf4-content-section {
  padding: 1.5rem 1.2rem;
  background: var(--vdf4-dark-surface);
  margin: 0.8rem 0;
  border-radius: 0;
}

.vdf4-content-section h2 {
  font-size: 1.8rem;
  color: var(--vdf4-primary);
  margin-bottom: 1rem;
  line-height: 2.2rem;
}

.vdf4-content-section h3 {
  font-size: 1.5rem;
  color: var(--vdf4-gold);
  margin: 1rem 0 0.5rem;
}

.vdf4-content-section p {
  color: var(--vdf4-text);
  margin-bottom: 0.8rem;
  line-height: 1.5rem;
}

.vdf4-content-section ul {
  padding-left: 1.8rem;
  margin-bottom: 0.8rem;
}

.vdf4-content-section li {
  color: var(--vdf4-text);
  margin-bottom: 0.4rem;
  line-height: 1.5rem;
}

/* === Promo Links === */
.vdf4-promo-link {
  color: var(--vdf4-primary);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  transition: color 0.2s;
}

.vdf4-promo-link:hover {
  color: var(--vdf4-gold);
}

.vdf4-promo-btn {
  display: inline-block;
  background: var(--vdf4-gradient);
  color: #fff;
  padding: 0.8rem 1.6rem;
  border-radius: var(--vdf4-radius);
  font-weight: 600;
  font-size: 1.3rem;
  cursor: pointer;
  border: none;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.vdf4-promo-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 12px rgba(210,105,30,0.4);
}

/* === Footer === */
.vdf4-footer {
  background: var(--vdf4-dark-surface);
  padding: 2rem 1.2rem 3rem;
  margin-top: 1rem;
}

.vdf4-footer-brand {
  text-align: center;
  margin-bottom: 1.5rem;
}

.vdf4-footer-brand p {
  color: var(--vdf4-text);
  font-size: 1.2rem;
  line-height: 1.6rem;
  opacity: 0.85;
}

.vdf4-footer-partners {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
  padding: 1rem 0;
  border-top: 1px solid var(--vdf4-border);
  border-bottom: 1px solid var(--vdf4-border);
}

.vdf4-footer-partners img {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.vdf4-footer-partners img:hover {
  opacity: 1;
}

.vdf4-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem 1.2rem;
  margin-bottom: 1.5rem;
}

.vdf4-footer-links a {
  color: var(--vdf4-text);
  font-size: 1.2rem;
  opacity: 0.75;
  transition: opacity 0.2s, color 0.2s;
}

.vdf4-footer-links a:hover {
  opacity: 1;
  color: var(--vdf4-primary);
}

.vdf4-footer-promo-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.vdf4-footer-promo-btns .vdf4-promo-btn {
  font-size: 1.1rem;
  padding: 0.6rem 1.2rem;
}

.vdf4-footer-copy {
  text-align: center;
  font-size: 1.1rem;
  color: var(--vdf4-text);
  opacity: 0.5;
}

/* === Bottom Navigation === */
.vdf4-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: var(--vdf4-bottom-nav-h);
  background: var(--vdf4-bg);
  border-top: 1px solid var(--vdf4-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  padding: 0 0.4rem;
}

.vdf4-bottom-nav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  min-height: 52px;
  background: none;
  border: none;
  color: var(--vdf4-text);
  cursor: pointer;
  transition: all 0.2s ease;
  opacity: 0.7;
  padding: 0.3rem;
  border-radius: var(--vdf4-radius);
}

.vdf4-bottom-nav-btn:hover,
.vdf4-bottom-nav-btn:focus {
  opacity: 1;
  background: var(--vdf4-dark-surface);
}

.vdf4-bottom-nav-btn.vdf4-nav-active {
  opacity: 1;
  color: var(--vdf4-primary);
}

.vdf4-bottom-nav-btn i,
.vdf4-bottom-nav-btn .material-icons,
.vdf4-bottom-nav-btn ion-icon,
.vdf4-bottom-nav-btn bi {
  font-size: 22px;
  margin-bottom: 2px;
}

.vdf4-bottom-nav-btn span {
  font-size: 1rem;
  line-height: 1.1rem;
}

/* === Mobile Padding === */
@media (max-width: 768px) {
  .vdf4-main {
    padding-bottom: calc(var(--vdf4-bottom-nav-h) + 16px);
  }
}

/* === Desktop: hide bottom nav === */
@media (min-width: 769px) {
  .vdf4-bottom-nav {
    display: none;
  }
}

/* === Utility Classes === */
.vdf4-text-center { text-align: center; }
.vdf4-mt-1 { margin-top: 1rem; }
.vdf4-mb-1 { margin-bottom: 1rem; }
.vdf4-p-1 { padding: 1rem; }
.vdf4-hidden { display: none; }

/* === Winner Showcase === */
.vdf4-winner-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--vdf4-card-bg);
  padding: 0.8rem 1rem;
  border-radius: var(--vdf4-radius);
  margin-bottom: 0.6rem;
  border-left: 3px solid var(--vdf4-primary);
}

.vdf4-winner-card .vdf4-winner-name {
  font-weight: 600;
  color: var(--vdf4-gold);
  font-size: 1.2rem;
}

.vdf4-winner-card .vdf4-winner-amount {
  color: var(--vdf4-success);
  font-weight: 700;
  font-size: 1.3rem;
}

.vdf4-winner-card .vdf4-winner-game {
  color: var(--vdf4-text);
  opacity: 0.7;
  font-size: 1.1rem;
}

/* === Testimonial === */
.vdf4-testimonial {
  background: var(--vdf4-card-bg);
  border-radius: var(--vdf4-radius-lg);
  padding: 1.2rem;
  margin-bottom: 0.8rem;
  border-left: 3px solid var(--vdf4-gold);
}

.vdf4-testimonial-text {
  font-style: italic;
  color: var(--vdf4-text);
  margin-bottom: 0.6rem;
  line-height: 1.5rem;
}

.vdf4-testimonial-author {
  font-size: 1.1rem;
  color: var(--vdf4-primary);
  font-weight: 600;
}

/* === Payment Methods === */
.vdf4-payment-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.vdf4-payment-item {
  background: var(--vdf4-card-bg);
  padding: 0.6rem 1rem;
  border-radius: var(--vdf4-radius);
  font-size: 1.1rem;
  color: var(--vdf4-text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* === Download CTA === */
.vdf4-download-cta {
  background: var(--vdf4-gradient);
  border-radius: var(--vdf4-radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  margin: 1rem 0;
}

.vdf4-download-cta h3 {
  font-size: 2rem;
  color: #fff;
  margin-bottom: 0.8rem;
}

.vdf4-download-cta p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.2rem;
  font-size: 1.3rem;
}

.vdf4-download-cta .vdf4-promo-btn {
  background: #fff;
  color: var(--vdf4-primary);
  font-size: 1.5rem;
  padding: 1rem 2.5rem;
}

/* === Category Highlights === */
.vdf4-category-card {
  background: var(--vdf4-card-bg);
  border-radius: var(--vdf4-radius-lg);
  padding: 1.2rem;
  margin-bottom: 0.8rem;
  border: 1px solid var(--vdf4-border);
  transition: border-color 0.2s;
}

.vdf4-category-card:hover {
  border-color: var(--vdf4-primary);
}

.vdf4-category-card h4 {
  font-size: 1.4rem;
  color: var(--vdf4-primary);
  margin-bottom: 0.5rem;
}

.vdf4-category-card p {
  font-size: 1.2rem;
  color: var(--vdf4-text);
  opacity: 0.8;
  line-height: 1.5rem;
}

/* === FAQ Styles === */
.vdf4-faq-item {
  background: var(--vdf4-card-bg);
  border-radius: var(--vdf4-radius);
  margin-bottom: 0.8rem;
  overflow: hidden;
  border: 1px solid var(--vdf4-border);
}

.vdf4-faq-question {
  padding: 1.2rem;
  font-weight: 600;
  color: var(--vdf4-primary);
  cursor: default;
  font-size: 1.3rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.vdf4-faq-answer {
  padding: 0 1.2rem 1.2rem;
  color: var(--vdf4-text);
  line-height: 1.5rem;
  font-size: 1.2rem;
}

/* === Internal Links === */
.vdf4-internal-link {
  color: var(--vdf4-gold);
  text-decoration: underline;
  transition: color 0.2s;
}

.vdf4-internal-link:hover {
  color: var(--vdf4-primary);
}

/* === RTP Bar === */
.vdf4-rtp-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.vdf4-rtp-label {
  font-size: 1.1rem;
  color: var(--vdf4-text);
  min-width: 90px;
}

.vdf4-rtp-track {
  flex: 1;
  height: 8px;
  background: var(--vdf4-card-bg);
  border-radius: 4px;
  overflow: hidden;
}

.vdf4-rtp-fill {
  height: 100%;
  background: var(--vdf4-gradient);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.vdf4-rtp-value {
  font-size: 1.1rem;
  color: var(--vdf4-success);
  font-weight: 600;
  min-width: 40px;
  text-align: right;
}

/* === Achievement Badge === */
.vdf4-achievement {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--vdf4-card-bg);
  padding: 0.8rem;
  border-radius: var(--vdf4-radius);
  margin-bottom: 0.6rem;
}

.vdf4-achievement-icon {
  font-size: 2.4rem;
  color: var(--vdf4-gold);
}

.vdf4-achievement-info h4 {
  font-size: 1.2rem;
  color: var(--vdf4-text);
}

.vdf4-achievement-info p {
  font-size: 1rem;
  color: var(--vdf4-text);
  opacity: 0.7;
}