/* a088 theme - mobile-first Vietnamese casino portal
   All classes use uif3- prefix. Color palette: #2D2D2D #00BFFF #A9A9A9 #4169E1 #5F9EA0 */

:root {
  --uif3-bg: #2D2D2D;
  --uif3-bg-2: #1d1d1d;
  --uif3-primary: #00BFFF;
  --uif3-secondary: #4169E1;
  --uif3-accent: #5F9EA0;
  --uif3-text: #ffffff;
  --uif3-text-muted: #A9A9A9;
  --uif3-card: #3a3a3a;
  --uif3-border: #4a4a4a;
  --uif3-gold: #f5c542;
  --uif3-danger: #ff5c5c;
  --uif3-radius: 10px;
  --uif3-header-h: 56px;
  --uif3-bottomnav-h: 60px;
}

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

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

body {
  font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--uif3-bg);
  color: var(--uif3-text);
  line-height: 1.5rem;
  font-size: 1.5rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--uif3-primary); text-decoration: none; }
img { max-width: 100%; display: block; }

.uif3-wrapper { max-width: 430px; margin: 0 auto; position: relative; min-height: 100vh; }

/* ===== Header ===== */
.uif3-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  max-width: 430px; margin: 0 auto;
  height: var(--uif3-header-h);
  background: linear-gradient(90deg, #1d1d1d, #2D2D2D 60%, #1d1d1d);
  border-bottom: 2px solid var(--uif3-primary);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.2rem;
}
.uif3-logo { display: flex; align-items: center; gap: .6rem; color: var(--uif3-text); }
.uif3-logo img { width: 28px; height: 28px; border-radius: 6px; }
.uif3-logo .uif3-brand { font-size: 1.8rem; font-weight: 800; color: var(--uif3-primary); letter-spacing: .5px; }
.uif3-header-actions { display: flex; align-items: center; gap: .5rem; }
.uif3-menu-btn {
  background: transparent; border: 0; color: var(--uif3-text);
  font-size: 2rem; width: 40px; height: 40px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.uif3-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .6rem 1.1rem; border-radius: var(--uif3-radius); font-weight: 700;
  font-size: 1.3rem; border: 0; cursor: pointer; min-height: 38px; transition: transform .15s, opacity .15s;
}
.uif3-btn:active { transform: scale(.95); }
.uif3-btn-login { background: transparent; color: var(--uif3-text); border: 1px solid var(--uif3-secondary); }
.uif3-btn-register { background: linear-gradient(90deg, var(--uif3-primary), var(--uif3-secondary)); color: #fff; }

/* ===== Mobile menu ===== */
.uif3-mobile-menu {
  position: fixed; top: var(--uif3-header-h); left: 0; right: 0; z-index: 9999;
  max-width: 430px; margin: 0 auto;
  background: #1a1a1a; border-bottom: 2px solid var(--uif3-primary);
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.uif3-mobile-menu.uif3-menu-open { max-height: 480px; }
.uif3-mobile-menu a {
  display: block; padding: 1.1rem 1.5rem; color: var(--uif3-text);
  border-bottom: 1px solid #333; font-size: 1.5rem;
}
.uif3-mobile-menu a:active { background: #262626; }
.uif3-mobile-menu a i { color: var(--uif3-primary); margin-right: .8rem; width: 20px; }

/* ===== Main / sections ===== */
.uif3-main { padding-top: calc(var(--uif3-header-h) + 8px); padding-bottom: 80px; }
.uif3-section { padding: 1.8rem 1.2rem; }
.uif3-section-title {
  font-size: 2rem; font-weight: 800; margin-bottom: 1rem;
  color: var(--uif3-text); border-left: 4px solid var(--uif3-primary); padding-left: .8rem;
}
.uif3-section-title span { color: var(--uif3-primary); }
.uif3-lead { color: var(--uif3-text-muted); font-size: 1.4rem; margin-bottom: 1.2rem; }

/* ===== Carousel ===== */
.uif3-carousel { position: relative; margin: 1rem 0; border-radius: 14px; overflow: hidden; }
.uif3-slides { position: relative; height: 180px; }
.uif3-slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity .5s;
  cursor: pointer;
}
.uif3-slide.uif3-slide-active { opacity: 1; }
.uif3-slide img { width: 100%; height: 100%; object-fit: cover; }
.uif3-slide .uif3-slide-cap {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.8));
  padding: 1.2rem 1rem .9rem; color: #fff; font-weight: 700; font-size: 1.5rem;
}
.uif3-dots { position: absolute; bottom: 8px; right: 12px; display: flex; gap: 6px; z-index: 2; }
.uif3-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.4); cursor: pointer; }
.uif3-dot.uif3-dot-active { background: var(--uif3-primary); }

/* ===== Filter chips ===== */
.uif3-chips { display: flex; gap: .6rem; overflow-x: auto; padding: .4rem 0 1rem; }
.uif3-chip {
  white-space: nowrap; padding: .5rem 1rem; border-radius: 20px;
  background: var(--uif3-card); color: var(--uif3-text-muted); font-size: 1.3rem;
  border: 1px solid var(--uif3-border); cursor: pointer;
}
.uif3-chip.uif3-chip-active { background: var(--uif3-primary); color: #fff; border-color: var(--uif3-primary); }

/* ===== Game grid ===== */
.uif3-game-group { margin-bottom: 1.6rem; }
.uif3-game-group-title {
  font-size: 1.6rem; font-weight: 700; margin-bottom: .8rem; color: var(--uif3-primary);
  display: flex; align-items: center; gap: .5rem;
}
.uif3-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .7rem; }
.uif3-game-card { text-align: center; cursor: pointer; }
.uif3-game-card img {
  width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px;
  border: 1px solid var(--uif3-border); transition: transform .15s, border-color .15s;
}
.uif3-game-card:active img { transform: scale(.94); border-color: var(--uif3-primary); }
.uif3-game-card .uif3-game-name {
  font-size: 1.1rem; color: var(--uif3-text-muted); margin-top: .3rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ===== Cards / modules ===== */
.uif3-card {
  background: var(--uif3-card); border: 1px solid var(--uif3-border);
  border-radius: var(--uif3-radius); padding: 1.2rem; margin-bottom: 1rem;
}
.uif3-card h3 { font-size: 1.6rem; margin-bottom: .6rem; color: var(--uif3-primary); }
.uif3-card p { font-size: 1.35rem; color: var(--uif3-text-muted); }
.uif3-card ul { list-style: none; }
.uif3-card ul li { padding: .5rem 0 .5rem 1.6rem; position: relative; font-size: 1.35rem; color: var(--uif3-text-muted); }
.uif3-card ul li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--uif3-accent); position: absolute; left: 0; }

/* Promo inline link */
.uif3-promo-link { color: var(--uif3-primary); font-weight: 700; cursor: pointer; }
.uif3-promo-link:hover { text-decoration: underline; }

/* Big CTA */
.uif3-cta { display: block; text-align: center; padding: 1.2rem; margin: 1rem 0;
  background: linear-gradient(90deg, var(--uif3-primary), var(--uif3-secondary));
  color: #fff; font-weight: 800; font-size: 1.6rem; border-radius: var(--uif3-radius); cursor: pointer; }

/* Feature list grid */
.uif3-feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; }
.uif3-feature { background: var(--uif3-card); border-radius: 10px; padding: 1rem; text-align: center; }
.uif3-feature i { font-size: 2.4rem; color: var(--uif3-primary); margin-bottom: .4rem; }
.uif3-feature h4 { font-size: 1.35rem; margin-bottom: .3rem; }
.uif3-feature p { font-size: 1.2rem; color: var(--uif3-text-muted); }

/* RTP table */
.uif3-rtp-row { display: flex; justify-content: space-between; padding: .6rem 0; border-bottom: 1px dashed var(--uif3-border); font-size: 1.3rem; }
.uif3-rtp-row span:last-child { color: var(--uif3-gold); font-weight: 700; }

/* Testimonial */
.uif3-testi { background: var(--uif3-card); border-radius: 10px; padding: 1rem; margin-bottom: .8rem; }
.uif3-testi .uif3-testi-name { color: var(--uif3-primary); font-weight: 700; font-size: 1.3rem; margin-bottom: .3rem; }
.uif3-testi p { font-size: 1.3rem; color: var(--uif3-text-muted); }

/* Winner strip */
.uif3-winner { display: flex; justify-content: space-between; padding: .5rem 0; border-bottom: 1px solid var(--uif3-border); font-size: 1.25rem; }
.uif3-winner .uif3-amount { color: var(--uif3-gold); font-weight: 700; }

/* Payment chips */
.uif3-pay-row { display: flex; flex-wrap: wrap; gap: .6rem; }
.uif3-pay { background: var(--uif3-card); border: 1px solid var(--uif3-border); border-radius: 8px; padding: .6rem 1rem; font-size: 1.2rem; color: var(--uif3-text-muted); }

/* FAQ */
.uif3-faq { border-bottom: 1px solid var(--uif3-border); padding: .8rem 0; }
.uif3-faq h4 { font-size: 1.4rem; color: var(--uif3-text); margin-bottom: .3rem; }
.uif3-faq p { font-size: 1.3rem; color: var(--uif3-text-muted); }

/* ===== Footer ===== */
.uif3-footer { background: #161616; padding: 1.8rem 1.2rem 2rem; border-top: 2px solid var(--uif3-primary); }
.uif3-footer-about { font-size: 1.3rem; color: var(--uif3-text-muted); margin-bottom: 1rem; }
.uif3-footer-links { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.uif3-footer-links a { background: var(--uif3-card); border: 1px solid var(--uif3-border); padding: .4rem .9rem; border-radius: 6px; font-size: 1.2rem; color: var(--uif3-text); }
.uif3-footer-promos { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.uif3-footer-promos .uif3-btn { flex: 1 1 auto; min-width: 120px; }
.uif3-footer-copy { font-size: 1.2rem; color: var(--uif3-text-muted); text-align: center; border-top: 1px solid #333; padding-top: 1rem; }

/* ===== Bottom nav ===== */
.uif3-bottomnav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
  max-width: 430px; margin: 0 auto;
  height: var(--uif3-bottomnav-h);
  background: linear-gradient(180deg, #1d1d1d, #161616);
  border-top: 2px solid var(--uif3-primary);
  display: flex; justify-content: space-around; align-items: stretch;
}
.uif3-bottomnav-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: var(--uif3-text-muted); text-decoration: none; font-size: 1rem; gap: 2px;
  background: transparent; border: 0; cursor: pointer; min-width: 60px; min-height: 60px;
  transition: color .15s, transform .15s;
}
.uif3-bottomnav-btn i { font-size: 22px; }
.uif3-bottomnav-btn .material-icons-outlined,
.uif3-bottomnav-btn .material-icons { font-size: 24px; }
.uif3-bottomnav-btn:active { transform: scale(.92); color: var(--uif3-primary); }
.uif3-bottomnav-active { color: var(--uif3-primary); }
.uif3-bottomnav-active i { color: var(--uif3-primary); }

/* Desktop: hide bottom nav, widen wrapper */
@media (min-width: 769px) {
  .uif3-bottomnav { display: none; }
  .uif3-wrapper { max-width: 760px; }
  .uif3-header, .uif3-mobile-menu { max-width: 760px; }
  .uif3-grid { grid-template-columns: repeat(6, 1fr); }
}

/* Utility */
.uif3-mt { margin-top: 1.2rem; }
.uif3-hidden { display: none; }