/**
 * luckydraw777 Layout Stylesheet
 * All classes use ui20- prefix for namespace isolation
 * Color Palette: #1A1A2E | #00695C | #B2DFDB | #26A69A | #90EE90 | #F0F0F0
 */

/* CSS Variables */
:root {
  --ui20-bg-dark: #1A1A2E;
  --ui20-teal-deep: #00695C;
  --ui20-teal-light: #B2DFDB;
  --ui20-teal-mid: #26A69A;
  --ui20-green-light: #90EE90;
  --ui20-text-light: #F0F0F0;
  --ui20-bg-card: #16213E;
  --ui20-bg-section: #0F3460;
  --ui20-border: rgba(178, 223, 219, 0.15);
  --ui20-shadow: rgba(0, 0, 0, 0.3);
  --ui20-radius: 8px;
  --ui20-radius-lg: 16px;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 62.5%; scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  font-size: 1.5rem;
  line-height: 1.5;
  color: var(--ui20-text-light);
  background: var(--ui20-bg-dark);
  max-width: 430px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Container */
.ui20-container { width: 100%; max-width: 430px; margin: 0 auto; padding: 0 1.2rem; }
.ui20-wrapper { padding: 1.5rem 0; }

/* Header */
.ui20-header {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 430px; height: 56px; z-index: 1000;
  background: linear-gradient(135deg, var(--ui20-bg-dark) 0%, var(--ui20-teal-deep) 100%);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1rem; border-bottom: 1px solid var(--ui20-border);
}
.ui20-header-logo {
  display: flex; align-items: center; gap: 0.6rem; text-decoration: none;
  color: var(--ui20-text-light); font-weight: 700; font-size: 1.6rem;
}
.ui20-header-logo img { width: 28px; height: 28px; border-radius: 4px; }
.ui20-header-actions { display: flex; align-items: center; gap: 0.6rem; }
.ui20-btn-register, .ui20-btn-login {
  padding: 0.5rem 1.2rem; border-radius: 6px; font-size: 1.2rem;
  font-weight: 600; cursor: pointer; border: none; transition: all 0.2s;
}
.ui20-btn-register {
  background: linear-gradient(135deg, var(--ui20-teal-mid), var(--ui20-green-light));
  color: var(--ui20-bg-dark);
}
.ui20-btn-register:hover { opacity: 0.9; transform: scale(1.03); }
.ui20-btn-login {
  background: transparent; color: var(--ui20-teal-light);
  border: 1px solid var(--ui20-teal-mid);
}
.ui20-btn-login:hover { background: rgba(38, 166, 154, 0.15); }
.ui20-menu-toggle {
  background: none; border: none; color: var(--ui20-teal-light);
  font-size: 2.2rem; cursor: pointer; padding: 0.4rem;
  display: flex; align-items: center; justify-content: center;
}

/* Mobile Menu */
.ui20-mobile-menu {
  position: fixed; top: 0; right: -280px; width: 280px; height: 100vh;
  background: var(--ui20-bg-dark); z-index: 9999;
  transition: right 0.3s ease; padding: 2rem 1.5rem;
  border-left: 1px solid var(--ui20-border);
}
.ui20-menu-active { right: 0; }
.ui20-menu-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.6); z-index: 9998;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.ui20-overlay-active { opacity: 1; pointer-events: auto; }
.ui20-menu-close {
  position: absolute; top: 1rem; right: 1rem;
  background: none; border: none; color: var(--ui20-teal-light);
  font-size: 2.4rem; cursor: pointer;
}
.ui20-menu-links { margin-top: 3rem; list-style: none; }
.ui20-menu-links li { margin-bottom: 0.3rem; }
.ui20-menu-links a {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 1rem; color: var(--ui20-text-light); text-decoration: none;
  border-radius: var(--ui20-radius); font-size: 1.4rem;
  transition: background 0.2s;
}
.ui20-menu-links a:hover { background: rgba(38, 166, 154, 0.12); }
.ui20-menu-links a span.ui20-menu-icon { font-size: 2rem; width: 28px; text-align: center; }

/* Carousel */
.ui20-carousel { position: relative; overflow: hidden; border-radius: var(--ui20-radius-lg); margin-top: 60px; }
.ui20-carousel-track { display: flex; }
.ui20-carousel-slide {
  min-width: 100%; opacity: 0; transition: opacity 0.5s ease;
  position: absolute; top: 0; left: 0;
}
.ui20-slide-active { opacity: 1; position: relative; }
.ui20-carousel-slide img { width: 100%; height: auto; display: block; cursor: pointer; }
.ui20-carousel-dots {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 6px;
}
.ui20-carousel-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.4); border: none; cursor: pointer;
  transition: background 0.3s;
}
.ui20-dot-active { background: var(--ui20-teal-mid); }

/* Section & Headings */
.ui20-section { padding: 2rem 0; }
.ui20-section-title {
  font-size: 1.8rem; font-weight: 700; color: var(--ui20-text-light);
  margin-bottom: 1.2rem; padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--ui20-teal-mid);
}
.ui20-section-title i { color: var(--ui20-green-light); margin-right: 0.5rem; }

/* Grid & Cards */
.ui20-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}
.ui20-card {
  background: var(--ui20-bg-card); border-radius: var(--ui20-radius);
  padding: 0.6rem; text-align: center; border: 1px solid var(--ui20-border);
  transition: transform 0.2s, box-shadow 0.2s; cursor: pointer;
}
.ui20-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px var(--ui20-shadow); }
.ui20-card img { width: 100%; aspect-ratio: 1; border-radius: 6px; object-fit: cover; }
.ui20-card-name {
  font-size: 1.1rem; color: var(--ui20-teal-light); margin-top: 0.3rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* Content Blocks */
.ui20-content-block {
  background: var(--ui20-bg-card); border-radius: var(--ui20-radius-lg);
  padding: 1.5rem; margin-bottom: 1.5rem; border: 1px solid var(--ui20-border);
}
.ui20-content-block h2 {
  font-size: 1.7rem; color: var(--ui20-green-light); margin-bottom: 1rem;
}
.ui20-content-block h3 {
  font-size: 1.5rem; color: var(--ui20-teal-light); margin: 1rem 0 0.5rem;
}
.ui20-content-block p {
  color: var(--ui20-text-light); font-size: 1.3rem; line-height: 1.6;
  margin-bottom: 0.8rem; opacity: 0.9;
}
.ui20-content-block ul { padding-left: 1.5rem; margin-bottom: 0.8rem; }
.ui20-content-block li {
  color: var(--ui20-text-light); font-size: 1.3rem; line-height: 1.6;
  margin-bottom: 0.4rem; opacity: 0.9;
}

/* Promo Button */
.ui20-promo-btn {
  display: inline-block; padding: 1rem 2rem; border-radius: var(--ui20-radius);
  background: linear-gradient(135deg, var(--ui20-teal-mid), var(--ui20-green-light));
  color: var(--ui20-bg-dark); font-weight: 700; font-size: 1.4rem;
  text-decoration: none; cursor: pointer; border: none; text-align: center;
  transition: all 0.2s; width: 100%;
}
.ui20-promo-btn:hover { opacity: 0.9; transform: scale(1.02); }
.ui20-promo-link {
  color: var(--ui20-green-light); font-weight: 600; cursor: pointer;
  text-decoration: underline;
}

/* Footer */
.ui20-footer {
  background: linear-gradient(180deg, var(--ui20-bg-dark) 0%, #0d0d1a 100%);
  padding: 2rem 1.2rem 8rem; border-top: 1px solid var(--ui20-border);
}
.ui20-footer-brand { margin-bottom: 1.5rem; }
.ui20-footer-brand p { color: var(--ui20-text-light); font-size: 1.2rem; opacity: 0.8; line-height: 1.5; }
.ui20-footer-links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1rem 0; }
.ui20-footer-links a {
  padding: 0.5rem 1rem; border-radius: 6px; font-size: 1.2rem;
  background: var(--ui20-bg-card); color: var(--ui20-teal-light);
  text-decoration: none; border: 1px solid var(--ui20-border);
  transition: background 0.2s;
}
.ui20-footer-links a:hover { background: rgba(38, 166, 154, 0.15); }
.ui20-footer-copy {
  text-align: center; font-size: 1.1rem; color: var(--ui20-text-light);
  opacity: 0.5; margin-top: 1.5rem; padding-top: 1rem;
  border-top: 1px solid var(--ui20-border);
}

/* Bottom Navigation */
.ui20-bottom-nav {
  position: fixed; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 430px; height: 60px; z-index: 1000;
  background: linear-gradient(135deg, var(--ui20-bg-dark), var(--ui20-teal-deep));
  display: flex; justify-content: space-around; align-items: center;
  border-top: 1px solid var(--ui20-border);
  box-shadow: 0 -2px 10px var(--ui20-shadow);
}
.ui20-bottom-nav-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-width: 60px; min-height: 56px; background: none; border: none;
  color: var(--ui20-teal-light); cursor: pointer; transition: all 0.2s;
  border-radius: 8px; padding: 0.3rem;
}
.ui20-bottom-nav-btn:hover, .ui20-bottom-nav-btn:focus {
  color: var(--ui20-green-light); background: rgba(38, 166, 154, 0.1);
}
.ui20-bottom-nav-btn i, .ui20-bottom-nav-btn .material-icons-outlined,
.ui20-bottom-nav-btn .material-icons {
  font-size: 22px; margin-bottom: 2px;
}
.ui20-bottom-nav-btn span {
  font-size: 1rem; font-weight: 500; white-space: nowrap;
}
.ui20-bottom-nav-btn.ui20-nav-active { color: var(--ui20-green-light); }

/* Main content padding for fixed header & bottom nav */
main { padding-top: 56px; padding-bottom: 1rem; }

/* Testimonials */
.ui20-testimonial {
  background: var(--ui20-bg-card); border-radius: var(--ui20-radius);
  padding: 1rem; margin-bottom: 0.8rem; border-left: 3px solid var(--ui20-teal-mid);
}
.ui20-testimonial-name { font-weight: 600; color: var(--ui20-green-light); font-size: 1.3rem; }
.ui20-testimonial-text { color: var(--ui20-text-light); font-size: 1.2rem; margin-top: 0.3rem; opacity: 0.85; }

/* Winner showcase */
.ui20-winner-row {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.6rem 0; border-bottom: 1px solid var(--ui20-border);
}
.ui20-winner-row:last-child { border-bottom: none; }
.ui20-winner-name { font-weight: 600; color: var(--ui20-green-light); font-size: 1.2rem; flex: 1; }
.ui20-winner-game { color: var(--ui20-teal-light); font-size: 1.1rem; }
.ui20-winner-amount { color: var(--ui20-green-light); font-weight: 700; font-size: 1.3rem; }

/* Payment icons row */
.ui20-payment-row { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; justify-content: center; }
.ui20-payment-item {
  background: var(--ui20-bg-card); padding: 0.6rem 1rem; border-radius: 6px;
  font-size: 1.2rem; color: var(--ui20-teal-light); border: 1px solid var(--ui20-border);
}

/* Responsive */
@media (min-width: 769px) {
  .ui20-bottom-nav { display: none; }
  .ui20-footer { padding-bottom: 2rem; }
}
@media (max-width: 768px) {
  main { padding-bottom: 72px; }
}