/* ==========================================================================
   78 vin - design.css | Mobile-first casino styles
   All custom classes use the sb16- prefix to namespace the 78 vin UI.
   Palette: #8FBC8F (brand green) | #3A3A3A (dark) | #B2DFDB (teal) | #fff
   ========================================================================== */

:root {
  --sb16-bg: #3A3A3A;
  --sb16-bg-deep: #2b2b2b;
  --sb16-bg-card: #454545;
  --sb16-bg-soft: #505050;
  --sb16-primary: #8FBC8F;
  --sb16-primary-dark: #6fae6f;
  --sb16-accent: #B2DFDB;
  --sb16-text: #FFFFFF;
  --sb16-text-muted: #cfcfcf;
  --sb16-gold: #f0c674;
  --sb16-danger: #e57373;
  --sb16-header-h: 5.6rem;
  --sb16-bottom-h: 6.2rem;
  --sb16-radius: 1.2rem;
  --sb16-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

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

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

body {
  font-family: 'Be Vietnam', 'Segoe UI', Roboto, system-ui, sans-serif;
  background: var(--sb16-bg);
  color: var(--sb16-text);
  line-height: 1.5rem;
  font-size: 1.4rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--sb16-accent); text-decoration: none; }
ul { list-style: none; }

.sb16-container { width: 100%; max-width: 430px; margin: 0 auto; padding: 0 1.2rem; }
.sb16-wrapper { min-height: 100vh; display: flex; flex-direction: column; }
.sb16-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.sb16-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: linear-gradient(135deg, var(--sb16-bg-deep) 0%, var(--sb16-bg) 100%);
  border-bottom: 1px solid rgba(143, 188, 143, 0.25);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}
.sb16-header-inner {
  max-width: 430px; margin: 0 auto; padding: 0 1.2rem;
  height: var(--sb16-header-h);
  display: flex; align-items: center; justify-content: space-between;
}
.sb16-brand { display: flex; align-items: center; gap: 0.7rem; }
.sb16-brand-logo { width: 3rem; height: 3rem; border-radius: 0.7rem; object-fit: cover; box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35); }
.sb16-brand-name { font-size: 1.7rem; font-weight: 800; color: var(--sb16-primary); letter-spacing: 0.5px; line-height: 1.1; }
.sb16-brand-name span { color: var(--sb16-accent); }

.sb16-header-actions { display: flex; align-items: center; gap: 0.5rem; }
.sb16-btn {
  border: none; cursor: pointer; border-radius: 0.8rem;
  font-weight: 700; font-size: 1.25rem; padding: 0.7rem 1.2rem;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
  font-family: inherit;
}
.sb16-btn:active { transform: scale(0.96); }
.sb16-btn-login { background: transparent; color: var(--sb16-text); border: 1px solid var(--sb16-primary); }
.sb16-btn-register {
  background: linear-gradient(135deg, var(--sb16-primary), var(--sb16-primary-dark));
  color: #1c2a1c; box-shadow: 0 4px 12px rgba(143, 188, 143, 0.4);
}
.sb16-menu-btn {
  background: transparent; border: none; color: var(--sb16-primary);
  font-size: 2.2rem; cursor: pointer; padding: 0.4rem;
  display: flex; align-items: center; justify-content: center;
}

/* --------------------------------------------------------------------------
   Mobile drawer menu
   -------------------------------------------------------------------------- */
.sb16-mobile-menu {
  position: fixed; top: 0; right: -82%; width: 82%; height: 100vh;
  background: #242424; z-index: 9999; transition: right .28s ease;
  padding: 5.6rem 1.5rem 2rem; overflow-y: auto;
}
.sb16-mobile-menu.sb16-is-open { right: 0; box-shadow: -8px 0 30px rgba(0, 0, 0, 0.5); }
.sb16-menu-backdrop {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55); z-index: 9998;
  opacity: 0; visibility: hidden; transition: opacity .25s ease;
}
.sb16-menu-backdrop.sb16-is-visible { opacity: 1; visibility: visible; }
.sb16-menu-close {
  position: absolute; top: 1.2rem; right: 1.2rem;
  background: transparent; border: none; color: var(--sb16-text);
  font-size: 2rem; cursor: pointer;
}
.sb16-menu-title { font-size: 1.5rem; color: var(--sb16-primary); margin-bottom: 0.8rem; font-weight: 700; }
.sb16-menu-list li { border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.sb16-menu-list a {
  display: flex; align-items: center; gap: 0.9rem;
  color: var(--sb16-text); padding: 1.1rem 0.4rem;
  font-size: 1.35rem; font-weight: 600;
}
.sb16-menu-list a i { color: var(--sb16-primary); font-size: 1.6rem; width: 2rem; text-align: center; }
.sb16-menu-cta { margin-top: 1.4rem; display: flex; flex-direction: column; gap: 0.7rem; }
.sb16-menu-cta .sb16-btn { width: 100%; padding: 1rem; font-size: 1.35rem; }

/* --------------------------------------------------------------------------
   Main / sections
   -------------------------------------------------------------------------- */
.sb16-main { flex: 1; padding-top: var(--sb16-header-h); padding-bottom: var(--sb16-bottom-h); }
.sb16-section { margin: 2rem 0; }
.sb16-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.sb16-section-title {
  font-size: 1.7rem; font-weight: 800; color: var(--sb16-primary);
  position: relative; padding-left: 1rem;
}
.sb16-section-title::before {
  content: ''; position: absolute; left: 0; top: 50%;
  transform: translateY(-50%); width: 0.4rem; height: 70%;
  background: var(--sb16-primary); border-radius: 0.3rem;
}
.sb16-section-more { color: var(--sb16-accent); font-size: 1.2rem; font-weight: 600; }

.sb16-h1 { font-size: 2rem; font-weight: 900; color: var(--sb16-text); margin: 1.4rem 0 0.6rem; line-height: 1.3; }
.sb16-h1 span { color: var(--sb16-primary); }
.sb16-subtitle { color: var(--sb16-text-muted); font-size: 1.25rem; margin-bottom: 1rem; line-height: 1.6; }
.sb16-eyebrow {
  display: inline-block; background: rgba(143, 188, 143, 0.15);
  color: var(--sb16-primary); padding: 0.3rem 0.9rem; border-radius: 2rem;
  font-size: 1.1rem; font-weight: 700; margin-bottom: 0.6rem;
}

/* --------------------------------------------------------------------------
   Carousel
   -------------------------------------------------------------------------- */
.sb16-carousel { position: relative; overflow: hidden; border-radius: var(--sb16-radius); margin: 1.2rem 0; box-shadow: var(--sb16-shadow); }
.sb16-carousel-track { display: flex; transition: transform .55s ease; }
.sb16-carousel-slide { position: relative; min-width: 100%; cursor: pointer; }
.sb16-carousel-slide img { width: 100%; height: 17rem; object-fit: cover; }
.sb16-carousel-caption {
  position: absolute; left: 1rem; bottom: 1rem; right: 1rem;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.65), rgba(58, 58, 58, 0.55));
  padding: 0.7rem 1rem; border-radius: 0.8rem; border-left: 3px solid var(--sb16-primary);
}
.sb16-carousel-caption h3 { color: var(--sb16-primary); font-size: 1.5rem; font-weight: 800; }
.sb16-carousel-caption p { color: var(--sb16-text); font-size: 1.15rem; }
.sb16-carousel-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.45); color: #fff; border: none;
  width: 3rem; height: 3rem; border-radius: 50%; font-size: 1.6rem; cursor: pointer;
}
.sb16-carousel-prev { left: 0.6rem; }
.sb16-carousel-next { right: 0.6rem; }
.sb16-carousel-dots { position: absolute; bottom: 0.6rem; left: 50%; transform: translateX(-50%); display: flex; gap: 0.5rem; }
.sb16-carousel-dot { width: 0.8rem; height: 0.8rem; border-radius: 50%; background: rgba(255, 255, 255, 0.4); border: none; cursor: pointer; }
.sb16-carousel-dot.sb16-is-active { background: var(--sb16-primary); width: 2rem; border-radius: 0.6rem; }

/* --------------------------------------------------------------------------
   Filter pills + game grid
   -------------------------------------------------------------------------- */
.sb16-filter-bar { display: flex; gap: 0.6rem; overflow-x: auto; padding: 0.5rem 0; margin-bottom: 0.8rem; scrollbar-width: none; }
.sb16-filter-bar::-webkit-scrollbar { display: none; }
.sb16-filter-btn {
  white-space: nowrap; padding: 0.6rem 1.2rem; border-radius: 2rem;
  background: var(--sb16-bg-card); color: var(--sb16-text);
  border: 1px solid transparent; font-size: 1.2rem; font-weight: 600; cursor: pointer;
}
.sb16-filter-btn.sb16-is-active { background: var(--sb16-primary); color: #1c2a1c; }

.sb16-game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.7rem; }
.sb16-game-card {
  background: var(--sb16-bg-card); border-radius: 1rem; overflow: hidden;
  cursor: pointer; position: relative;
  transition: transform .15s ease, box-shadow .15s ease;
  border: 1px solid rgba(143, 188, 143, 0.12);
}
.sb16-game-card:active { transform: scale(0.96); box-shadow: 0 4px 12px rgba(143, 188, 143, 0.35); }
.sb16-game-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; background: #1d1d1d; }
.sb16-game-card-name {
  padding: 0.5rem 0.4rem; font-size: 1.05rem; text-align: center;
  color: var(--sb16-text); font-weight: 600; line-height: 1.2;
  min-height: 2.6rem; display: flex; align-items: center; justify-content: center;
}
.sb16-game-card-badge {
  position: absolute; top: 0.3rem; left: 0.3rem;
  background: var(--sb16-danger); color: #fff; font-size: 0.9rem;
  padding: 0.1rem 0.5rem; border-radius: 0.4rem; font-weight: 700;
}
.sb16-game-card-badge.sb16-badge-hot { background: var(--sb16-gold); color: #1c2a1c; }

/* --------------------------------------------------------------------------
   Cards, features, steps, stats
   -------------------------------------------------------------------------- */
.sb16-card {
  background: var(--sb16-bg-card); border-radius: var(--sb16-radius);
  padding: 1.4rem; margin-bottom: 1rem;
  border: 1px solid rgba(143, 188, 143, 0.1);
}
.sb16-card h3 { font-size: 1.5rem; color: var(--sb16-primary); margin-bottom: 0.7rem; font-weight: 800; }
.sb16-card h4 { font-size: 1.3rem; color: var(--sb16-accent); margin: 0.8rem 0 0.4rem; font-weight: 700; }
.sb16-card p { color: var(--sb16-text-muted); font-size: 1.2rem; line-height: 1.6; margin-bottom: 0.6rem; }
.sb16-card a.sb16-inline-link { color: var(--sb16-accent); font-weight: 700; }
.sb16-card a.sb16-inline-link:hover { text-decoration: underline; }

.sb16-feature-list { display: grid; gap: 0.8rem; }
.sb16-feature-list li { display: flex; gap: 0.9rem; align-items: flex-start; background: var(--sb16-bg-card); padding: 1rem; border-radius: 0.8rem; }
.sb16-feature-list i { color: var(--sb16-primary); font-size: 1.9rem; flex-shrink: 0; }
.sb16-feature-list strong { color: var(--sb16-text); display: block; font-size: 1.25rem; margin-bottom: 0.1rem; }
.sb16-feature-list span { color: var(--sb16-text-muted); font-size: 1.1rem; }

.sb16-steps { counter-reset: step; display: grid; gap: 0.8rem; }
.sb16-steps li { position: relative; padding: 1rem 1rem 1rem 3.6rem; background: var(--sb16-bg-card); border-radius: 0.8rem; counter-increment: step; }
.sb16-steps li::before {
  content: counter(step); position: absolute; left: 0.8rem; top: 50%;
  transform: translateY(-50%); width: 2.2rem; height: 2.2rem;
  background: var(--sb16-primary); color: #1c2a1c; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.2rem;
}
.sb16-steps strong { color: var(--sb16-text); font-size: 1.25rem; display: block; margin-bottom: 0.2rem; }
.sb16-steps span { color: var(--sb16-text-muted); font-size: 1.1rem; }

.sb16-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
.sb16-stat { background: var(--sb16-bg-card); border-radius: 0.8rem; padding: 1rem; text-align: center; border: 1px solid rgba(143, 188, 143, 0.12); }
.sb16-stat-num { font-size: 2rem; font-weight: 900; color: var(--sb16-primary); }
.sb16-stat-label { font-size: 1.05rem; color: var(--sb16-text-muted); margin-top: 0.2rem; }

/* --------------------------------------------------------------------------
   Promo CTA, testimonials, payment, winners
   -------------------------------------------------------------------------- */
.sb16-cta-banner {
  background: linear-gradient(135deg, var(--sb16-primary) 0%, var(--sb16-accent) 100%);
  border-radius: var(--sb16-radius); padding: 1.6rem;
  color: #1c2a1c; text-align: center; margin: 1.4rem 0;
}
.sb16-cta-banner h3 { font-size: 1.7rem; font-weight: 900; margin-bottom: 0.4rem; }
.sb16-cta-banner p { font-size: 1.2rem; margin-bottom: 1rem; }
.sb16-cta-banner .sb16-btn { background: #1c2a1c; color: var(--sb16-primary); padding: 1rem 2rem; font-size: 1.3rem; }

.sb16-testimonials { display: grid; gap: 0.8rem; }
.sb16-testimonial { background: var(--sb16-bg-card); border-radius: 0.8rem; padding: 1.2rem; border-left: 3px solid var(--sb16-primary); }
.sb16-testimonial-stars { color: var(--sb16-gold); margin-bottom: 0.4rem; font-size: 1.1rem; }
.sb16-testimonial p { color: var(--sb16-text); font-size: 1.2rem; margin-bottom: 0.6rem; line-height: 1.5; }
.sb16-testimonial .sb16-author { color: var(--sb16-accent); font-size: 1.1rem; font-weight: 700; }

.sb16-pay-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; }
.sb16-pay-item { background: var(--sb16-bg-card); border-radius: 0.6rem; padding: 0.9rem 0.4rem; text-align: center; font-size: 1rem; color: var(--sb16-text-muted); }
.sb16-pay-item i { font-size: 1.9rem; color: var(--sb16-primary); display: block; margin-bottom: 0.3rem; }

.sb16-winner-list { display: grid; gap: 0.5rem; }
.sb16-winner { display: flex; justify-content: space-between; align-items: center; background: var(--sb16-bg-card); padding: 0.7rem 1rem; border-radius: 0.6rem; font-size: 1.15rem; }
.sb16-winner-name { color: var(--sb16-text); }
.sb16-winner-game { color: var(--sb16-text-muted); font-size: 1rem; }
.sb16-winner-amount { color: var(--sb16-gold); font-weight: 800; }

.sb16-app-cta { display: flex; gap: 1rem; align-items: center; background: var(--sb16-bg-card); padding: 1.2rem; border-radius: var(--sb16-radius); border: 1px solid rgba(143, 188, 143, 0.15); }
.sb16-app-cta-icon { font-size: 3rem; color: var(--sb16-primary); flex-shrink: 0; }
.sb16-app-cta-body { flex: 1; }
.sb16-app-cta-body h4 { font-size: 1.35rem; color: var(--sb16-text); margin-bottom: 0.2rem; }
.sb16-app-cta-body p { font-size: 1.1rem; color: var(--sb16-text-muted); }
.sb16-app-buttons { display: flex; flex-direction: column; gap: 0.4rem; }
.sb16-app-btn { background: var(--sb16-primary); color: #1c2a1c; padding: 0.5rem 0.9rem; border-radius: 0.5rem; font-size: 1rem; font-weight: 700; text-align: center; border: none; cursor: pointer; }

.sb16-faq-item { background: var(--sb16-bg-card); border-radius: 0.8rem; padding: 1rem 1.2rem; margin-bottom: 0.6rem; }
.sb16-faq-item h4 { font-size: 1.25rem; color: var(--sb16-accent); margin-bottom: 0.4rem; }
.sb16-faq-item p { color: var(--sb16-text-muted); font-size: 1.15rem; line-height: 1.5; }

.sb16-cat-highlights { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
.sb16-cat-card { background: var(--sb16-bg-card); border-radius: 0.9rem; padding: 1rem; text-align: center; border: 1px solid rgba(143, 188, 143, 0.12); cursor: pointer; }
.sb16-cat-card i { font-size: 2.4rem; color: var(--sb16-primary); margin-bottom: 0.4rem; }
.sb16-cat-card h4 { font-size: 1.3rem; color: var(--sb16-text); margin-bottom: 0.2rem; }
.sb16-cat-card p { font-size: 1.05rem; color: var(--sb16-text-muted); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.sb16-footer { background: #242424; padding: 2.2rem 0 7rem; border-top: 2px solid var(--sb16-primary); margin-top: 1.5rem; }
.sb16-footer-brand { font-size: 1.6rem; font-weight: 800; color: var(--sb16-primary); margin-bottom: 0.5rem; }
.sb16-footer-desc { color: var(--sb16-text-muted); font-size: 1.15rem; margin-bottom: 1.2rem; line-height: 1.6; }
.sb16-footer h5 { color: var(--sb16-accent); font-size: 1.25rem; margin-bottom: 0.6rem; font-weight: 700; }
.sb16-footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem 0.8rem; margin-bottom: 1.4rem; }
.sb16-footer-links a { color: var(--sb16-text-muted); font-size: 1.1rem; }
.sb16-footer-links a:hover { color: var(--sb16-primary); }
.sb16-footer-promos { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.2rem; }
.sb16-footer-promos .sb16-btn { background: var(--sb16-primary); color: #1c2a1c; padding: 0.6rem 1rem; font-size: 1.1rem; }
.sb16-footer-copy { color: var(--sb16-text-muted); font-size: 1rem; border-top: 1px solid rgba(255, 255, 255, 0.08); padding-top: 1rem; line-height: 1.5; }

/* --------------------------------------------------------------------------
   Mobile bottom navigation
   -------------------------------------------------------------------------- */
.sb16-bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
  background: linear-gradient(180deg, var(--sb16-bg-deep), #1d1d1d);
  border-top: 1px solid rgba(143, 188, 143, 0.3);
  display: flex; justify-content: space-around; align-items: center;
  height: var(--sb16-bottom-h);
  box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.4);
}
.sb16-bottom-nav-btn {
  background: transparent; border: none; color: var(--sb16-text-muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  flex: 1; min-width: 60px; min-height: 60px; padding: 0.4rem;
  gap: 0.2rem; cursor: pointer; font-family: inherit;
  transition: color .2s ease, transform .15s ease;
}
.sb16-bottom-nav-btn .material-icons,
.sb16-bottom-nav-btn ion-icon,
.sb16-bottom-nav-btn i { font-size: 2.4rem; }
.sb16-bottom-nav-btn:active { transform: scale(0.9); }
.sb16-bottom-nav-btn.sb16-is-current { color: var(--sb16-primary); }
.sb16-bottom-nav-btn.sb16-nav-promo { color: var(--sb16-accent); }
.sb16-bottom-nav-btn span { font-size: 1rem; font-weight: 600; }

/* Reveal on scroll */
.sb16-reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.sb16-reveal.sb16-is-visible { opacity: 1; transform: translateY(0); }

/* Desktop: hide bottom nav, center layout */
@media (min-width: 769px) {
  .sb16-bottom-nav { display: none; }
  body { background: #1d1d1d; }
  .sb16-footer { padding-bottom: 2rem; }
}