/* ============================================================
   b1234.homes - theme-7515.css
   Mobile-first casino UI. All custom classes prefixed "s751-".
   Palette: #F08080 #CD5C5C #1C2833 #FF4500 #FFFFFF #E65100
   Comments in English. Content language: Vietnamese (vi-VN).
   ============================================================ */

:root {
  --s751-primary: #F08080;
  --s751-secondary: #CD5C5C;
  --s751-bg: #1C2833;
  --s751-bg-soft: #243240;
  --s751-accent: #FF4500;
  --s751-warm: #E65100;
  --s751-text: #FFFFFF;
  --s751-muted: #c9d2dc;
  --s751-gold: #ffd27a;
  --s751-radius: 14px;
  --s751-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --s751-header-h: 58px;
  --s751-bottomnav-h: 62px;
}

* { box-sizing: border-box; }

html {
  font-size: 62.5%; /* 1rem = 10px */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: radial-gradient(circle at top, #22324a 0%, var(--s751-bg) 60%);
  color: var(--s751-text);
  line-height: 1.5rem;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--s751-primary); text-decoration: none; }

/* ----- Layout containers ----- */
.s751-wrapper {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 12px;
}

.s751-container {
  width: 100%;
  max-width: 430px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 12px;
}

main.s751-main {
  padding-top: calc(var(--s751-header-h) + 6px);
  padding-bottom: calc(var(--s751-bottomnav-h) + 24px);
}

/* ----- Header ----- */
.s751-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--s751-header-h);
  background: linear-gradient(180deg, rgba(28, 40, 51, 0.98), rgba(28, 40, 51, 0.92));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(240, 128, 128, 0.25);
  z-index: 1000;
  transition: box-shadow .25s ease;
}

.s751-header-scrolled { box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45); }

.s751-header-inner {
  max-width: 430px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  gap: 8px;
}

.s751-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.7rem;
  color: var(--s751-text);
}

.s751-brand img { width: 30px; height: 30px; border-radius: 8px; }

.s751-brand-name { background: linear-gradient(90deg, var(--s751-primary), var(--s751-gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.s751-actions { display: flex; align-items: center; gap: 8px; }

.s751-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 14px;
  border: none;
  border-radius: 999px;
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, var(--s751-accent), var(--s751-warm));
  box-shadow: 0 4px 12px rgba(255, 69, 0, 0.35);
  transition: transform .15s ease, box-shadow .2s ease;
}
.s751-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(255, 69, 0, 0.5); }
.s751-btn:active { transform: scale(.96); }

.s751-btn-outline {
  background: transparent;
  border: 1.5px solid var(--s751-primary);
  color: var(--s751-primary);
  box-shadow: none;
}
.s751-btn-outline:hover { background: rgba(240, 128, 128, 0.12); }

.s751-menu-toggle {
  background: transparent;
  border: none;
  color: var(--s751-text);
  font-size: 2rem;
  cursor: pointer;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ----- Mobile expandable menu ----- */
.s751-mobile-menu {
  position: fixed;
  top: var(--s751-header-h);
  left: 0; right: 0;
  background: var(--s751-bg-soft);
  border-bottom: 1px solid rgba(240, 128, 128, 0.25);
  transform: translateY(-130%);
  transition: transform .28s ease;
  z-index: 9999;
  max-height: 70vh;
  overflow-y: auto;
}
.s751-menu-open { transform: translateY(0); }
.s751-mobile-menu a {
  display: block;
  padding: 12px 16px;
  color: var(--s751-text);
  font-size: 1.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.s751-mobile-menu a:hover { background: rgba(240, 128, 128, 0.12); }

/* ----- Hero carousel ----- */
.s751-carousel {
  position: relative;
  border-radius: var(--s751-radius);
  overflow: hidden;
  box-shadow: var(--s751-shadow);
  margin: 10px 0 16px;
}
.s751-slides { position: relative; }
.s751-slide {
  display: none;
  cursor: pointer;
}
.s751-slide img { width: 100%; height: 200px; object-fit: cover; }
.s751-slide-active { display: block; }
.s751-slide-cap {
  position: absolute;
  left: 14px; bottom: 12px;
  background: rgba(0,0,0,0.55);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 1.3rem;
  font-weight: 600;
}
.s751-dots {
  position: absolute;
  bottom: 10px; right: 12px;
  display: flex; gap: 6px;
}
.s751-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.45);
  cursor: pointer;
  border: none;
}
.s751-dot-active { background: var(--s751-primary); }

/* ----- Headings ----- */
.s751-h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin: 18px 0 8px;
  text-align: center;
  background: linear-gradient(90deg, var(--s751-primary), var(--s751-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.s751-h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 22px 0 10px;
  color: var(--s751-text);
  display: flex; align-items: center; gap: 8px;
}
.s751-h2::before {
  content: "";
  width: 4px; height: 18px;
  background: linear-gradient(180deg, var(--s751-primary), var(--s751-warm));
  border-radius: 4px;
}
.s751-h3 { font-size: 1.5rem; font-weight: 700; margin: 14px 0 6px; color: var(--s751-primary); }
.s751-section { margin: 18px 0; }
.s751-lead { font-size: 1.35rem; color: var(--s751-muted); text-align: center; padding: 0 8px; }

/* ----- Game grids ----- */
.s751-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.s751-game-card {
  background: var(--s751-bg-soft);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 6px;
  text-align: center;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease;
  overflow: hidden;
}
.s751-game-card:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(240, 128, 128, 0.25); }
.s751-game-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 8px;
}
.s751-game-name {
  font-size: 1.1rem;
  margin-top: 4px;
  color: var(--s751-text);
  line-height: 1.25rem;
  height: 2.5rem;
  overflow: hidden;
}
.s751-cat-title {
  font-size: 1.45rem;
  font-weight: 700;
  margin: 16px 0 8px;
  color: var(--s751-gold);
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ----- Cards / panels ----- */
.s751-card {
  background: var(--s751-bg-soft);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--s751-radius);
  padding: 14px;
  margin: 12px 0;
  box-shadow: var(--s751-shadow);
}
.s751-card p { margin: 6px 0; font-size: 1.3rem; color: var(--s751-muted); }

.s751-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.s751-tile {
  background: linear-gradient(135deg, rgba(240,128,128,0.15), rgba(255,69,0,0.08));
  border: 1px solid rgba(240, 128, 128, 0.25);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}
.s751-tile .material-icons, .s751-tile i { font-size: 28px; color: var(--s751-primary); }
.s751-tile h4 { margin: 6px 0 2px; font-size: 1.35rem; }
.s751-tile p { margin: 0; font-size: 1.15rem; color: var(--s751-muted); }

/* ----- Lists & steps ----- */
.s751-list { margin: 8px 0; padding-left: 20px; }
.s751-list li { margin: 6px 0; font-size: 1.3rem; color: var(--s751-muted); }
.s751-steps { counter-reset: step; padding: 0; list-style: none; }
.s751-steps li {
  position: relative;
  padding: 10px 12px 10px 44px;
  margin: 8px 0;
  background: var(--s751-bg-soft);
  border-radius: 10px;
  font-size: 1.3rem;
  color: var(--s751-muted);
}
.s751-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--s751-accent), var(--s751-warm));
  color: #fff; font-weight: 700; font-size: 1.2rem;
  display: inline-flex; align-items: center; justify-content: center;
}

/* ----- FAQ ----- */
.s751-faq details {
  background: var(--s751-bg-soft);
  border-radius: 10px;
  padding: 10px 14px;
  margin: 8px 0;
  border: 1px solid rgba(255,255,255,0.06);
}
.s751-faq summary {
  font-size: 1.35rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--s751-text);
}
.s751-faq details[open] summary { color: var(--s751-primary); }
.s751-faq p { font-size: 1.25rem; color: var(--s751-muted); margin: 6px 0 2px; }

/* ----- Testimonials ----- */
.s751-testi {
  background: var(--s751-bg-soft);
  border-left: 4px solid var(--s751-primary);
  border-radius: 10px;
  padding: 12px;
  margin: 8px 0;
}
.s751-testi .s751-stars { color: var(--s751-gold); font-size: 1.2rem; }
.s751-testi p { font-size: 1.25rem; color: var(--s751-muted); margin: 4px 0; }
.s751-testi cite { font-style: normal; color: var(--s751-primary); font-weight: 700; font-size: 1.2rem; }

/* ----- Winners ticker ----- */
.s751-winners {
  background: linear-gradient(90deg, rgba(255,69,0,0.18), rgba(240,128,128,0.12));
  border-radius: 10px;
  padding: 8px 12px;
  margin: 10px 0;
  overflow: hidden;
}
.s751-winners ul { list-style: none; margin: 0; padding: 0; }
.s751-winners li {
  display: flex;
  justify-content: space-between;
  font-size: 1.2rem;
  padding: 3px 0;
  color: var(--s751-text);
}
.s751-winners li b { color: var(--s751-gold); }

/* ----- CTA ----- */
.s751-cta {
  display: block;
  text-align: center;
  margin: 18px 0;
  padding: 14px;
  border-radius: var(--s751-radius);
  background: linear-gradient(135deg, var(--s751-accent), var(--s751-warm));
  color: #fff;
  font-weight: 800;
  font-size: 1.5rem;
  box-shadow: 0 8px 20px rgba(255,69,0,0.4);
}
.s751-cta:hover { transform: translateY(-2px); }
.s751-promo-text a { font-weight: 700; color: var(--s751-gold); text-decoration: underline; }

/* ----- Payment row ----- */
.s751-pay {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
}
.s751-pay span {
  background: var(--s751-bg-soft);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 1.2rem;
}

/* ----- Reveal animation ----- */
.s751-reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.s751-revealed { opacity: 1; transform: translateY(0); }

/* ----- Footer ----- */
.s751-footer {
  background: #16202c;
  border-top: 1px solid rgba(240, 128, 128, 0.2);
  padding: 20px 12px calc(var(--s751-bottomnav-h) + 20px);
  margin-top: 18px;
}
.s751-footer .s751-wrapper { padding: 0 8px; }
.s751-footer p { font-size: 1.2rem; color: var(--s751-muted); margin: 6px 0; }
.s751-footer-links {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0;
}
.s751-footer-links a {
  background: var(--s751-bg-soft);
  border: 1px solid rgba(240,128,128,0.25);
  color: var(--s751-primary);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 1.2rem;
}
.s751-footer-seo a { color: var(--s751-gold); font-weight: 600; }
.s751-copy { font-size: 1.1rem; color: rgba(255,255,255,0.5); margin-top: 8px; }

/* ----- Bottom nav ----- */
.s751-bottomnav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--s751-bottomnav-h);
  background: linear-gradient(180deg, rgba(36,50,64,0.98), rgba(22,32,44,0.99));
  border-top: 1px solid rgba(240, 128, 128, 0.3);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.s751-bottomnav-btn {
  flex: 1;
  min-width: 60px;
  min-height: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--s751-muted);
  background: transparent;
  border: none;
  text-decoration: none;
  font-size: 1.05rem;
  cursor: pointer;
  transition: color .2s ease, transform .15s ease;
}
.s751-bottomnav-btn .material-icons,
.s751-bottomnav-btn i,
.s751-bottomnav-btn ion-icon { font-size: 24px; }
.s751-bottomnav-btn:hover { color: var(--s751-primary); transform: translateY(-2px); }
.s751-bottomnav-active { color: var(--s751-gold); }
.s751-bottomnav-active::after {
  content: "";
  width: 26px; height: 3px;
  background: var(--s751-gold);
  border-radius: 3px;
  margin-top: 2px;
}
.s751-bottomnav-promo {
  color: var(--s751-primary);
}

/* ----- Desktop: hide bottom nav, widen wrapper ----- */
@media (min-width: 769px) {
  .s751-bottomnav { display: none; }
  main.s751-main { padding-bottom: 40px; }
  .s751-footer { padding-bottom: 20px; }
}

/* ----- Mobile padding safety ----- */
@media (max-width: 768px) {
  main.s751-main { padding-bottom: calc(var(--s751-bottomnav-h) + 24px); }
}