/*!
 * CM66 - theme.css
 * Site: cm66.homes (Vietnamese, mobile-first)
 * All custom classes use the "uidb-" prefix.
 * Comments in English.
 */

/* ---- CSS variables (brand palette) ---- */
:root {
  --uidb-primary: #FF5722;      /* accent */
  --uidb-secondary: #FF91A4;    /* soft pink */
  --uidb-cyan: #00CED1;         /* highlight */
  --uidb-light: #E8F5E8;        /* text on dark */
  --uidb-bg: #0D1117;           /* dark background */
  --uidb-bg-alt: #161B22;
  --uidb-bg-card: #1C2330;
  --uidb-text: #E8F5E8;
  --uidb-text-muted: #9AA7B5;
  --uidb-border: #2A3441;
  --uidb-gold: #FFD24A;
  --uidb-radius: 14px;
  --uidb-radius-sm: 9px;
  --uidb-shadow: 0 6px 22px rgba(0, 0, 0, 0.45);
  --uidb-shadow-promo: 0 8px 24px rgba(255, 87, 34, 0.35);
  --uidb-transition: 0.22s ease;
}

/* ---- Reset ---- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-size: 62.5%; /* 1rem = 10px */
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: "Segoe UI", "Be Vietnam Pro", "Roboto", system-ui, sans-serif;
  background: var(--uidb-bg);
  color: var(--uidb-text);
  line-height: 1.5rem;
  font-size: 1.5rem;
  overflow-x: hidden;
}
a { color: var(--uidb-cyan); text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---- Layout wrappers (mobile-first) ---- */
.uidb-wrapper {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  position: relative;
}
.uidb-container {
  width: 100%;
  max-width: 430px;
  padding: 0 1.4rem;
  margin: 0 auto;
}
main.uidb-main {
  padding-top: 6.2rem;
  padding-bottom: 8.4rem; /* clearance for bottom nav */
}

/* ---- Header ---- */
.uidb-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, #0B1118 0%, #11171F 100%);
  border-bottom: 1px solid var(--uidb-border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}
.uidb-header-inner {
  max-width: 430px;
  margin: 0 auto;
  padding: 0.8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.uidb-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  min-width: 0;
}
.uidb-logo img {
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 8px;
  border: 1px solid var(--uidb-primary);
}
.uidb-logo-text {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--uidb-primary);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.uidb-logo-text span { color: var(--uidb-cyan); }

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

/* ---- Buttons ---- */
.uidb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 700;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform var(--uidb-transition), box-shadow var(--uidb-transition), background var(--uidb-transition);
  min-height: 3.8rem;
  min-width: 3.8rem;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
}
.uidb-btn:active { transform: scale(0.96); }
.uidb-btn-login {
  background: transparent;
  color: var(--uidb-text);
  border: 1px solid var(--uidb-border);
  padding: 0.7rem 1.2rem;
}
.uidb-btn-register {
  background: linear-gradient(135deg, var(--uidb-primary), #FF7E47);
  color: #fff;
  box-shadow: var(--uidb-shadow-promo);
  padding: 0.7rem 1.4rem;
}
.uidb-btn-promo {
  background: linear-gradient(135deg, var(--uidb-primary), var(--uidb-secondary));
  color: #fff;
  padding: 1.1rem 1.6rem;
  font-size: 1.55rem;
  width: 100%;
  box-shadow: var(--uidb-shadow-promo);
}
.uidb-btn-outline {
  background: transparent;
  border: 1px solid var(--uidb-cyan);
  color: var(--uidb-cyan);
  padding: 0.9rem 1.2rem;
  width: 100%;
}

.uidb-menu-toggle {
  background: transparent;
  border: 1px solid var(--uidb-border);
  color: var(--uidb-text);
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.8rem;
}

/* ---- Mobile dropdown menu ---- */
.uidb-mobile-menu {
  position: fixed;
  top: 0; right: -85%;
  width: 80%;
  max-width: 340px;
  height: 100%;
  background: var(--uidb-bg-alt);
  z-index: 9999;
  padding: 6.5rem 1.4rem 2rem;
  transition: right 0.28s ease;
  overflow-y: auto;
  border-left: 1px solid var(--uidb-border);
}
.uidb-mobile-menu.uidb-menu-open { right: 0; }
.uidb-mobile-menu a {
  display: block;
  padding: 1.1rem 1rem;
  color: var(--uidb-text);
  border-bottom: 1px solid var(--uidb-border);
  font-size: 1.5rem;
  font-weight: 600;
}
.uidb-mobile-menu a:hover { background: var(--uidb-bg-card); color: var(--uidb-primary); }
.uidb-menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.uidb-menu-backdrop.uidb-show { opacity: 1; pointer-events: auto; }
.uidb-menu-close {
  position: absolute;
  top: 1rem; right: 1.2rem;
  background: transparent;
  border: none;
  color: var(--uidb-text);
  font-size: 2.4rem;
  cursor: pointer;
}

/* ---- Carousel ---- */
.uidb-carousel {
  position: relative;
  width: 100%;
  height: 17rem;
  border-radius: var(--uidb-radius);
  overflow: hidden;
  margin: 1.4rem 0;
  box-shadow: var(--uidb-shadow);
}
.uidb-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.uidb-carousel-slide.uidb-active { opacity: 1; }
.uidb-carousel-slide img { width: 100%; height: 100%; object-fit: cover; cursor: pointer; }
.uidb-carousel-dots {
  position: absolute;
  bottom: 0.8rem; left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  z-index: 2;
}
.uidb-carousel-dot {
  width: 0.9rem; height: 0.9rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
}
.uidb-carousel-dot.uidb-active { background: var(--uidb-primary); width: 2.4rem; border-radius: 6px; }

/* ---- Section / card ---- */
.uidb-section {
  margin: 2rem 0;
}
.uidb-section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--uidb-light);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding-left: 0.8rem;
  border-left: 4px solid var(--uidb-primary);
}
.uidb-section-title i { color: var(--uidb-primary); }
.uidb-card {
  background: var(--uidb-bg-card);
  border: 1px solid var(--uidb-border);
  border-radius: var(--uidb-radius);
  padding: 1.4rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--uidb-shadow);
}
.uidb-card h3 { font-size: 1.6rem; margin-bottom: 0.6rem; color: var(--uidb-gold); }
.uidb-card p { color: var(--uidb-text-muted); font-size: 1.4rem; line-height: 1.7rem; }
.uidb-card a { color: var(--uidb-primary); font-weight: 700; }

/* ---- H1 ---- */
.uidb-h1 {
  font-size: 2.3rem;
  font-weight: 900;
  line-height: 1.3;
  margin: 1.4rem 0;
  background: linear-gradient(90deg, var(--uidb-primary), var(--uidb-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Game grid ---- */
.uidb-game-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 2.2rem 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--uidb-border);
}
.uidb-game-section-head h2 {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--uidb-cyan);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.uidb-game-section-head a { font-size: 1.3rem; color: var(--uidb-primary); }
.uidb-game-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
}
.uidb-game-item {
  background: var(--uidb-bg-card);
  border: 1px solid var(--uidb-border);
  border-radius: var(--uidb-radius-sm);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--uidb-transition), border-color var(--uidb-transition);
  text-align: center;
}
.uidb-game-item:hover { transform: translateY(-3px); border-color: var(--uidb-primary); }
.uidb-game-item img {
  width: 100%;
  height: 8.5rem;
  object-fit: cover;
}
.uidb-game-item span {
  display: block;
  padding: 0.6rem 0.4rem;
  font-size: 1.15rem;
  color: var(--uidb-text);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Stats ---- */
.uidb-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.6rem 0;
}
.uidb-stat {
  background: var(--uidb-bg-card);
  border: 1px solid var(--uidb-border);
  border-radius: var(--uidb-radius-sm);
  padding: 1.4rem 0.8rem;
  text-align: center;
}
.uidb-stat-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--uidb-primary);
}
.uidb-stat-label { font-size: 1.2rem; color: var(--uidb-text-muted); }

/* ---- Lists ---- */
.uidb-list { list-style: none; }
.uidb-list li {
  padding: 0.9rem 0;
  border-bottom: 1px dashed var(--uidb-border);
  font-size: 1.4rem;
  color: var(--uidb-text-muted);
}
.uidb-list li i { color: var(--uidb-cyan); margin-right: 0.6rem; }

/* ---- Testimonials ---- */
.uidb-testimonial {
  background: var(--uidb-bg-card);
  border-left: 3px solid var(--uidb-cyan);
  border-radius: var(--uidb-radius-sm);
  padding: 1.2rem;
  margin-bottom: 1rem;
}
.uidb-testimonial-name { font-weight: 700; color: var(--uidb-gold); font-size: 1.35rem; }
.uidb-testimonial-text { color: var(--uidb-text-muted); font-size: 1.35rem; margin-top: 0.4rem; }
.uidb-stars { color: var(--uidb-gold); font-size: 1.3rem; margin-top: 0.3rem; }

/* ---- Payment grid ---- */
.uidb-payment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin-top: 1rem;
}
.uidb-payment-grid div {
  background: var(--uidb-bg-card);
  border-radius: var(--uidb-radius-sm);
  padding: 0.9rem 0.3rem;
  text-align: center;
  font-size: 1.1rem;
  color: var(--uidb-text-muted);
  border: 1px solid var(--uidb-border);
}
.uidb-payment-grid i { font-size: 2rem; color: var(--uidb-cyan); }

/* ---- Winners ---- */
.uidb-winner {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--uidb-border);
  font-size: 1.35rem;
}
.uidb-winner span:first-child { color: var(--uidb-light); font-weight: 600; }
.uidb-winner span:last-child { color: var(--uidb-gold); font-weight: 800; }

/* ---- App download CTA ---- */
.uidb-app-cta {
  background: linear-gradient(135deg, #1A2230, #2A1A2A);
  border: 1px solid var(--uidb-primary);
  border-radius: var(--uidb-radius);
  padding: 1.6rem;
  text-align: center;
  margin: 1.6rem 0;
}
.uidb-app-cta h3 { color: var(--uidb-gold); font-size: 1.8rem; margin-bottom: 0.6rem; }
.uidb-app-cta p { color: var(--uidb-text-muted); font-size: 1.35rem; margin-bottom: 1rem; }

/* ---- FAQ ---- */
.uidb-faq-item {
  background: var(--uidb-bg-card);
  border: 1px solid var(--uidb-border);
  border-radius: var(--uidb-radius-sm);
  padding: 1.1rem;
  margin-bottom: 0.8rem;
}
.uidb-faq-q { font-weight: 700; color: var(--uidb-cyan); font-size: 1.4rem; margin-bottom: 0.4rem; }
.uidb-faq-a { color: var(--uidb-text-muted); font-size: 1.35rem; }

/* ---- Footer ---- */
.uidb-footer {
  background: #0A0F16;
  border-top: 1px solid var(--uidb-border);
  padding: 2.4rem 1.4rem 3rem;
  margin-top: 2rem;
}
.uidb-footer-inner { max-width: 430px; margin: 0 auto; }
.uidb-footer-brand { font-size: 2rem; font-weight: 900; color: var(--uidb-primary); margin-bottom: 0.6rem; }
.uidb-footer-desc { color: var(--uidb-text-muted); font-size: 1.3rem; line-height: 1.7rem; margin-bottom: 1.2rem; }
.uidb-footer-promos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.7rem;
  margin: 1rem 0 1.4rem;
}
.uidb-footer-promos button {
  background: var(--uidb-primary);
  color: #fff;
  border: none;
  padding: 0.9rem 0.6rem;
  border-radius: var(--uidb-radius-sm);
  font-weight: 700;
  font-size: 1.25rem;
  cursor: pointer;
  transition: transform var(--uidb-transition);
}
.uidb-footer-promos button:active { transform: scale(0.96); }
.uidb-footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem 1rem;
  margin: 1.2rem 0;
}
.uidb-footer-links a {
  color: var(--uidb-text-muted);
  font-size: 1.25rem;
  padding: 0.3rem 0;
}
.uidb-footer-links a:hover { color: var(--uidb-primary); }
.uidb-footer-copy {
  text-align: center;
  color: var(--uidb-text-muted);
  font-size: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--uidb-border);
}

/* ---- Bottom navigation (mobile only) ---- */
.uidb-bottomnav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 6rem;
  background: linear-gradient(180deg, #11171F, #0A0F16);
  border-top: 1px solid var(--uidb-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -3px 12px rgba(0,0,0,0.4);
}
.uidb-bottomnav-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 6rem;
  min-height: 6rem;
  flex: 1;
  color: var(--uidb-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-size: 1.1rem;
  gap: 0.25rem;
  transition: color var(--uidb-transition), transform var(--uidb-transition);
  -webkit-tap-highlight-color: transparent;
}
.uidb-bottomnav-btn i,
.uidb-bottomnav-btn span.material-icons-outlined,
.uidb-bottomnav-btn ion-icon {
  font-size: 2.4rem;
}
.uidb-bottomnav-btn ion-icon { font-size: 2.4rem; }
.uidb-bottomnav-btn:hover { color: var(--uidb-cyan); }
.uidb-bottomnav-btn:active { transform: scale(0.92); }
.uidb-bottomnav-active { color: var(--uidb-primary); }
.uidb-bottomnav-active i,
.uidb-bottomnav-active span[class*="material"],
.uidb-bottomnav-active ion-icon { color: var(--uidb-primary); }
.uidb-bottomnav-btn span.label { font-size: 1.05rem; }
.uidb-bottomnav-promo {
  color: var(--uidb-gold);
}

/* ---- Desktop: hide bottom nav ---- */
@media (min-width: 769px) {
  .uidb-bottomnav { display: none; }
  main.uidb-main { padding-bottom: 3rem; }
}

/* ---- Utility ---- */
.uidb-text-center { text-align: center; }
.uidb-mt-1 { margin-top: 1rem; }
.uidb-mt-2 { margin-top: 2rem; }
.uidb-promo-link {
  color: var(--uidb-primary);
  font-weight: 800;
  cursor: pointer;
}
.uidb-tag {
  display: inline-block;
  background: rgba(0, 206, 209, 0.15);
  color: var(--uidb-cyan);
  font-size: 1.1rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  margin-right: 0.3rem;
}