/**
 * 888 bet app - theme-28c4.css
 * Site: 888betapp.click | Lang: vi-VN
 * All classes use prefix "s28c-" to avoid collisions.
 * Palette: #0F0F23 (bg) | #FFE4B5 (text) | #DEB887 (accent).
 * Mobile-first; max-width 430px.
 */

:root {
  --s28c-bg: #0F0F23;
  --s28c-bg-2: #1a1a3a;
  --s28c-text: #FFE4B5;
  --s28c-accent: #DEB887;
  --s28c-gold: #FFD479;
  --s28c-white: #fff7e6;
  --s28c-muted: #b9a98a;
  --s28c-card: #171734;
  --s28c-border: #2a2a55;
  --s28c-danger: #ff5d5d;
  --s28c-success: #4fd1a5;
}

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

html {
  font-size: 62.5%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  background: var(--s28c-bg);
  color: var(--s28c-text);
  line-height: 1.5rem;
  font-size: 1.4rem;
  max-width: 430px;
  margin: 0 auto;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

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

a { color: var(--s28c-accent); text-decoration: none; }

.s28c-container { width: 100%; padding: 0 1.2rem; }
.s28c-wrapper { max-width: 430px; margin: 0 auto; }

/* ===== Header ===== */
.s28c-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #0F0F23 0%, #1a1a3a 100%);
  border-bottom: 1px solid var(--s28c-border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.s28c-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  gap: 0.8rem;
}

.s28c-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  min-width: 0;
}

.s28c-logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--s28c-bg);
  font-weight: 700;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.s28c-logo-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--s28c-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.s28c-logo-name span { color: var(--s28c-gold); }

.s28c-header-actions { display: flex; gap: 0.5rem; align-items: center; }

.s28c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 1.3rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  min-height: 40px;
  font-family: inherit;
}

.s28c-btn:active { transform: scale(0.96); }

.s28c-btn-login {
  background: transparent;
  color: var(--s28c-text);
  border: 1px solid var(--s28c-accent);
}

.s28c-btn-register {
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  color: var(--s28c-bg);
  box-shadow: 0 2px 8px rgba(222,180,135,0.4);
}

.s28c-menu-toggle {
  background: transparent;
  border: 1px solid var(--s28c-border);
  color: var(--s28c-text);
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.6rem;
}

/* ===== Mobile Menu ===== */
.s28c-mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background: var(--s28c-bg-2);
  z-index: 9999;
  transition: right 0.3s ease;
  padding: 2rem 1.2rem;
  overflow-y: auto;
  box-shadow: -4px 0 20px rgba(0,0,0,0.5);
}

.s28c-mobile-menu.s28c-menu-open { right: 0; }

.s28c-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--s28c-border);
}

.s28c-menu-close {
  background: transparent;
  border: none;
  color: var(--s28c-text);
  font-size: 2rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
}

.s28c-menu-list { list-style: none; }
.s28c-menu-list li { margin-bottom: 0.4rem; }
.s28c-menu-list a {
  display: block;
  padding: 1rem 0.8rem;
  color: var(--s28c-text);
  font-size: 1.4rem;
  border-radius: 8px;
  transition: background 0.15s;
}
.s28c-menu-list a:hover, .s28c-menu-list a:active {
  background: rgba(222,180,135,0.15);
}

.s28c-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9998;
  display: none;
}
.s28c-overlay.s28c-menu-open { display: block; }

/* ===== Hero / Carousel ===== */
.s28c-hero {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-bottom: 1px solid var(--s28c-border);
}

.s28c-slides { position: relative; width: 100%; height: 200px; }
.s28c-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
  cursor: pointer;
}
.s28c-slide img { width: 100%; height: 100%; object-fit: cover; }
.s28c-slide.s28c-slide-active { opacity: 1; }

.s28c-slide-caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: linear-gradient(transparent, rgba(15,15,35,0.95));
  padding: 1.5rem 1.2rem 1rem;
  color: var(--s28c-text);
}
.s28c-slide-caption h2 { font-size: 1.6rem; margin-bottom: 0.3rem; }
.s28c-slide-caption p { font-size: 1.2rem; color: var(--s28c-accent); }

.s28c-dots {
  position: absolute;
  bottom: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.4rem;
  z-index: 5;
}
.s28c-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,228,181,0.4);
  border: none;
  cursor: pointer;
  padding: 0;
}
.s28c-dot.s28c-dot-active { background: var(--s28c-gold); }

.s28c-hero-cta {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 6;
}

/* ===== Sections ===== */
.s28c-section {
  padding: 1.8rem 1.2rem;
  border-bottom: 1px solid var(--s28c-border);
}

.s28c-section-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--s28c-text);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.s28c-section-title i { color: var(--s28c-gold); }

.s28c-section-sub {
  font-size: 1.25rem;
  color: var(--s28c-muted);
  margin-bottom: 1rem;
}

/* ===== Promo CTA bar ===== */
.s28c-promo-bar {
  display: flex;
  gap: 0.6rem;
  padding: 1rem 1.2rem;
  background: linear-gradient(135deg, rgba(255,212,121,0.12), rgba(222,180,135,0.08));
  border-bottom: 1px solid var(--s28c-border);
}
.s28c-promo-bar .s28c-btn { flex: 1; }

/* ===== Game Tabs & Grid ===== */
.s28c-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.8rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.s28c-tabs::-webkit-scrollbar { display: none; }

.s28c-tab {
  white-space: nowrap;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  background: var(--s28c-card);
  color: var(--s28c-text);
  font-size: 1.2rem;
  border: 1px solid var(--s28c-border);
  cursor: pointer;
  transition: all 0.15s;
}
.s28c-tab.s28c-tab-active,
.s28c-tab:active {
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  color: var(--s28c-bg);
  border-color: transparent;
}

.s28c-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.s28c-card {
  position: relative;
  background: var(--s28c-card);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--s28c-border);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.s28c-card:active {
  transform: scale(0.97);
  box-shadow: 0 4px 14px rgba(255,212,121,0.3);
}

.s28c-card-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #0a0a1f;
}

.s28c-card-name {
  padding: 0.5rem 0.4rem;
  font-size: 1.1rem;
  color: var(--s28c-text);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 600;
}

.s28c-card-tag {
  position: absolute;
  top: 0.3rem;
  left: 0.3rem;
  background: rgba(255,93,93,0.9);
  color: #fff;
  font-size: 0.9rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
}

/* ===== Category Highlights ===== */
.s28c-cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}
.s28c-cat-card {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 12px;
  padding: 1rem;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s;
}
.s28c-cat-card:active { transform: scale(0.97); }
.s28c-cat-card i { font-size: 2.2rem; color: var(--s28c-gold); margin-bottom: 0.4rem; }
.s28c-cat-card h3 { font-size: 1.3rem; color: var(--s28c-text); margin-bottom: 0.2rem; }
.s28c-cat-card p { font-size: 1.1rem; color: var(--s28c-muted); }

/* ===== Info / Features / Steps ===== */
.s28c-info-block {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 12px;
  padding: 1.2rem;
  margin-bottom: 0.8rem;
}
.s28c-info-block h3 {
  font-size: 1.35rem;
  color: var(--s28c-gold);
  margin-bottom: 0.5rem;
  display: flex; align-items: center; gap: 0.4rem;
}
.s28c-info-block p { font-size: 1.25rem; color: var(--s28c-text); margin-bottom: 0.5rem; }
.s28c-info-block ul { padding-left: 1.4rem; }
.s28c-info-block li { font-size: 1.2rem; color: var(--s28c-text); margin-bottom: 0.3rem; }

.s28c-steps { display: flex; flex-direction: column; gap: 0.8rem; }
.s28c-step {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 12px;
  padding: 1rem;
}
.s28c-step-num {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  color: var(--s28c-bg);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.3rem;
}
.s28c-step-body h4 { font-size: 1.3rem; color: var(--s28c-text); margin-bottom: 0.2rem; }
.s28c-step-body p { font-size: 1.2rem; color: var(--s28c-muted); }

/* ===== Testimonials ===== */
.s28c-testi {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 0.8rem;
}
.s28c-testi-head { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.4rem; }
.s28c-testi-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  color: var(--s28c-bg);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.s28c-testi-name { font-size: 1.25rem; color: var(--s28c-text); font-weight: 600; }
.s28c-testi-stars { color: var(--s28c-gold); font-size: 1.1rem; margin-left: auto; }
.s28c-testi-text { font-size: 1.2rem; color: var(--s28c-muted); }

/* ===== Payment Methods ===== */
.s28c-pay-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
}
.s28c-pay-item {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 8px;
  padding: 0.6rem 0.3rem;
  text-align: center;
  font-size: 1rem;
  color: var(--s28c-text);
}
.s28c-pay-item i { font-size: 1.8rem; color: var(--s28c-accent); display: block; margin-bottom: 0.2rem; }

/* ===== Winners showcase ===== */
.s28c-winner {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.s28c-winner i { color: var(--s28c-gold); font-size: 1.5rem; }
.s28c-winner-name { font-size: 1.2rem; color: var(--s28c-text); font-weight: 600; }
.s28c-winner-amount { margin-left: auto; color: var(--s28c-success); font-weight: 700; font-size: 1.25rem; }

/* ===== App Download CTA ===== */
.s28c-app-cta {
  background: linear-gradient(135deg, rgba(255,212,121,0.15), rgba(222,180,135,0.08));
  border: 1px solid var(--s28c-accent);
  border-radius: 14px;
  padding: 1.4rem;
  text-align: center;
}
.s28c-app-cta h3 { font-size: 1.5rem; color: var(--s28c-gold); margin-bottom: 0.4rem; }
.s28c-app-cta p { font-size: 1.2rem; color: var(--s28c-text); margin-bottom: 0.8rem; }
.s28c-app-buttons { display: flex; gap: 0.6rem; justify-content: center; flex-wrap: wrap; }

/* ===== FAQ ===== */
.s28c-faq-item {
  background: var(--s28c-card);
  border: 1px solid var(--s28c-border);
  border-radius: 10px;
  margin-bottom: 0.6rem;
  overflow: hidden;
}
.s28c-faq-q {
  padding: 1rem;
  font-size: 1.25rem;
  color: var(--s28c-text);
  font-weight: 600;
  cursor: pointer;
}
.s28c-faq-a {
  padding: 0 1rem 1rem;
  font-size: 1.2rem;
  color: var(--s28c-muted);
}

/* ===== Footer ===== */
.s28c-footer {
  background: var(--s28c-bg-2);
  padding: 1.8rem 1.2rem 2rem;
  border-top: 1px solid var(--s28c-border);
  color: var(--s28c-text);
}
.s28c-footer-brand { font-size: 1.5rem; font-weight: 700; color: var(--s28c-gold); margin-bottom: 0.5rem; }
.s28c-footer-desc { font-size: 1.2rem; color: var(--s28c-muted); margin-bottom: 1rem; line-height: 1.6rem; }
.s28c-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.s28c-footer-links a {
  font-size: 1.15rem;
  color: var(--s28c-accent);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--s28c-border);
  border-radius: 6px;
}
.s28c-footer-copy {
  font-size: 1.1rem;
  color: var(--s28c-muted);
  border-top: 1px solid var(--s28c-border);
  padding-top: 0.8rem;
  text-align: center;
}

/* ===== Mobile Bottom Nav ===== */
.s28c-bottomnav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 430px;
  height: 60px;
  background: linear-gradient(180deg, #1a1a3a, #0F0F23);
  border-top: 1px solid var(--s28c-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -2px 12px rgba(0,0,0,0.4);
}

.s28c-bottomnav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  background: transparent;
  border: none;
  color: var(--s28c-muted);
  font-size: 1rem;
  cursor: pointer;
  min-width: 60px;
  min-height: 60px;
  padding: 0.4rem;
  transition: color 0.15s, transform 0.15s;
  font-family: inherit;
}
.s28c-bottomnav-btn:active { transform: scale(0.92); }
.s28c-bottomnav-btn i,
.s28c-bottomnav-btn .material-icons,
.s28c-bottomnav-btn ion-icon { font-size: 22px; }
.s28c-bottomnav-btn ion-icon { font-size: 24px; }

.s28c-bottomnav-active {
  color: var(--s28c-gold);
}
.s28c-bottomnav-active i,
.s28c-bottomnav-active .material-icons { color: var(--s28c-gold); }

.s28c-bottomnav-promo {
  color: var(--s28c-accent);
}
.s28c-bottomnav-center {
  position: relative;
}
.s28c-bottomnav-center::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 46px; height: 46px;
  background: linear-gradient(135deg, var(--s28c-gold), var(--s28c-accent));
  border-radius: 50%;
  z-index: -1;
  box-shadow: 0 2px 10px rgba(255,212,121,0.5);
}
.s28c-bottomnav-center i,
.s28c-bottomnav-center .material-icons { color: var(--s28c-bg); }

/* ===== Back to top ===== */
.s28c-totop {
  position: fixed;
  bottom: 76px;
  right: 1rem;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--s28c-accent);
  color: var(--s28c-bg);
  border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

/* ===== Responsive ===== */
@media (min-width: 769px) {
  .s28c-bottomnav { display: none; }
  .s28c-totop { bottom: 1rem; }
}

@media (max-width: 768px) {
  body { padding-bottom: 80px; }
  main { padding-bottom: 80px; }
}

@media (max-width: 360px) {
  .s28c-grid { grid-template-columns: repeat(2, 1fr); }
  .s28c-pay-grid { grid-template-columns: repeat(3, 1fr); }
  .s28c-logo-name { font-size: 1.3rem; }
}