/* ===========================================================
   Arena Plus Casino - core stylesheet
   Prefix: s8a3-  (all custom classes)
   Palette: #0D1117 (bg) | #1E90FF | #3CB371 | #48D1CC | #B0E0E6
   Mobile-first, max-width 430px shell.
   =========================================================== */

:root {
  --s8a3-bg: #0D1117;
  --s8a3-bg-soft: #131b25;
  --s8a3-card: #16202c;
  --s8a3-card-2: #1b2735;
  --s8a3-blue: #1E90FF;
  --s8a3-green: #3CB371;
  --s8a3-cyan: #48D1CC;
  --s8a3-powder: #B0E0E6;
  --s8a3-text: #E6F2F5;
  --s8a3-muted: #9FB3C0;
  --s8a3-gold: #FFD479;
  --s8a3-radius: 14px;
  --s8a3-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --s8a3-max: 430px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #163040 0%, var(--s8a3-bg) 60%);
  color: var(--s8a3-text);
  line-height: 1.55;
  font-size: 15px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--s8a3-cyan); text-decoration: none; }
a:hover { color: var(--s8a3-powder); }

.s8a3-wrap {
  width: 100%;
  max-width: var(--s8a3-max);
  margin: 0 auto;
  padding: 0 14px;
}

/* ---------------- Header ---------------- */
.s8a3-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(72, 209, 204, 0.18);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}
.s8a3-header.s8a3-scrolled { box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45); }
.s8a3-header-row {
  display: flex; align-items: center; justify-content: space-between;
  height: 58px;
}
.s8a3-brand {
  display: flex; align-items: center; gap: 8px;
  color: var(--s8a3-text); font-weight: 800; letter-spacing: 0.2px;
}
.s8a3-brand-logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--s8a3-blue), var(--s8a3-green));
  display: grid; place-items: center; color: #fff; font-size: 16px;
}
.s8a3-brand-text { font-size: 16px; line-height: 1; }
.s8a3-brand-text small { display: block; font-size: 9px; color: var(--s8a3-cyan); font-weight: 600; letter-spacing: 1.2px; }

.s8a3-header-actions { display: flex; gap: 8px; align-items: center; }
.s8a3-btn {
  border: 0; cursor: pointer; border-radius: 999px;
  font-weight: 700; font-size: 13px; padding: 9px 16px;
  transition: transform 0.15s ease, filter 0.2s ease, box-shadow 0.2s ease;
}
.s8a3-btn:active { transform: scale(0.96); }
.s8a3-btn-login {
  background: transparent; color: var(--s8a3-text);
  border: 1px solid rgba(176, 224, 230, 0.35);
}
.s8a3-btn-register {
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; box-shadow: 0 4px 14px rgba(30, 144, 255, 0.35);
}
.s8a3-btn-register:hover { filter: brightness(1.08); }

.s8a3-menu-btn {
  background: transparent; border: 0; color: var(--s8a3-text);
  font-size: 22px; padding: 6px; cursor: pointer; border-radius: 8px;
}

/* ---------------- Hero ---------------- */
.s8a3-hero {
  position: relative; padding: 26px 0 28px;
  background:
    radial-gradient(600px 200px at 80% 0%, rgba(72, 209, 204, 0.18), transparent 70%),
    linear-gradient(180deg, rgba(60, 179, 113, 0.10), transparent 70%);
  overflow: hidden;
}
.s8a3-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(72, 209, 204, 0.14); color: var(--s8a3-cyan);
  border: 1px solid rgba(72, 209, 204, 0.3);
  padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 700;
  letter-spacing: 0.6px; text-transform: uppercase;
}
.s8a3-hero h1 {
  font-size: 28px; line-height: 1.2; margin: 14px 0 10px;
  background: linear-gradient(90deg, #fff, var(--s8a3-powder) 60%, var(--s8a3-cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.s8a3-hero p { color: var(--s8a3-muted); margin: 0 0 18px; font-size: 14px; }
.s8a3-hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }
.s8a3-btn-cta {
  flex: 1 1 auto; text-align: center; padding: 14px 18px; font-size: 15px;
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; border-radius: 12px; font-weight: 800;
  box-shadow: 0 8px 20px rgba(30, 144, 255, 0.35);
}
.s8a3-btn-ghost {
  flex: 0 0 auto; padding: 14px 16px; border-radius: 12px;
  background: rgba(176, 224, 230, 0.08); color: var(--s8a3-text);
  border: 1px solid rgba(176, 224, 230, 0.25); font-weight: 700;
}
.s8a3-hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin-top: 22px;
}
.s8a3-stat {
  background: rgba(22, 32, 44, 0.7); border: 1px solid rgba(72, 209, 204, 0.18);
  border-radius: 12px; padding: 12px 6px; text-align: center;
}
.s8a3-stat b { display: block; font-size: 18px; color: var(--s8a3-cyan); }
.s8a3-stat span { font-size: 10.5px; color: var(--s8a3-muted); }

/* ---------------- Section ---------------- */
.s8a3-section { padding: 22px 0; }
.s8a3-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.s8a3-section-title {
  font-size: 18px; font-weight: 800; margin: 0;
  display: flex; align-items: center; gap: 8px;
}
.s8a3-section-title::before {
  content: ""; width: 4px; height: 18px; border-radius: 4px;
  background: linear-gradient(180deg, var(--s8a3-green), var(--s8a3-blue));
}
.s8a3-section-more { font-size: 12px; color: var(--s8a3-cyan); }

/* ---------------- Game tabs + grid ---------------- */
.s8a3-tabs {
  display: flex; gap: 8px; overflow-x: auto; padding-bottom: 6px;
  scrollbar-width: none; -ms-overflow-style: none; margin: 0 0 12px;
}
.s8a3-tabs::-webkit-scrollbar { display: none; }
.s8a3-tab {
  flex: 0 0 auto; padding: 7px 14px; border-radius: 999px;
  background: rgba(176, 224, 230, 0.06); color: var(--s8a3-muted);
  border: 1px solid rgba(176, 224, 230, 0.15);
  font-size: 12.5px; font-weight: 700; cursor: pointer;
  transition: all 0.2s ease;
}
.s8a3-tab.s8a3-active {
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 12px rgba(30, 144, 255, 0.3);
}

.s8a3-game-panel { display: none; }
.s8a3-game-panel.s8a3-is-visible { display: grid; }
.s8a3-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.s8a3-card {
  background: var(--s8a3-card); border-radius: var(--s8a3-radius);
  overflow: hidden; border: 1px solid rgba(72, 209, 204, 0.12);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  position: relative;
}
.s8a3-card:hover { transform: translateY(-3px); box-shadow: var(--s8a3-shadow); border-color: rgba(72, 209, 204, 0.4); }
.s8a3-card-img { aspect-ratio: 1 / 1; width: 100%; background: #0b121a; }
.s8a3-card-name {
  padding: 6px 8px 8px; font-size: 11px; text-align: center;
  color: var(--s8a3-text); font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.s8a3-card-play {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: rgba(13, 17, 23, 0.45); opacity: 0; transition: opacity 0.2s ease;
}
.s8a3-card:hover .s8a3-card-play { opacity: 1; }
.s8a3-card-play span {
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; padding: 5px 12px; border-radius: 999px; font-size: 11px; font-weight: 700;
}

/* ---------------- Promo banner ---------------- */
.s8a3-promo {
  display: flex; gap: 12px; align-items: center;
  background: linear-gradient(120deg, rgba(60, 179, 113, 0.22), rgba(30, 144, 255, 0.22));
  border: 1px solid rgba(72, 209, 204, 0.35); border-radius: var(--s8a3-radius);
  padding: 14px; margin: 4px 0 8px;
}
.s8a3-promo-icon { font-size: 30px; }
.s8a3-promo-text b { display: block; color: var(--s8a3-gold); font-size: 14px; }
.s8a3-promo-text span { font-size: 12px; color: var(--s8a3-text); }

/* ---------------- Feature list ---------------- */
.s8a3-features { display: grid; gap: 10px; }
.s8a3-feature {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--s8a3-card); border: 1px solid rgba(72, 209, 204, 0.12);
  border-radius: var(--s8a3-radius); padding: 14px;
}
.s8a3-feature-ic {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center; font-size: 20px;
  background: linear-gradient(135deg, rgba(30, 144, 255, 0.2), rgba(60, 179, 113, 0.2));
  color: var(--s8a3-cyan);
}
.s8a3-feature b { display: block; font-size: 14px; margin-bottom: 2px; }
.s8a3-feature p { margin: 0; color: var(--s8a3-muted); font-size: 12.5px; }

/* ---------------- Steps ---------------- */
.s8a3-steps { counter-reset: step; display: grid; gap: 10px; }
.s8a3-step {
  position: relative; padding: 12px 14px 12px 50px;
  background: var(--s8a3-card); border-radius: var(--s8a3-radius);
  border: 1px solid rgba(72, 209, 204, 0.12);
}
.s8a3-step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 12px; top: 12px;
  width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
}
.s8a3-step b { display: block; font-size: 13.5px; }
.s8a3-step span { color: var(--s8a3-muted); font-size: 12px; }

/* ---------------- Link grid ---------------- */
.s8a3-links {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px;
}
.s8a3-link-card {
  display: flex; gap: 10px; align-items: center;
  background: var(--s8a3-card); border: 1px solid rgba(72, 209, 204, 0.12);
  border-radius: 12px; padding: 12px; color: var(--s8a3-text);
}
.s8a3-link-card:hover { border-color: rgba(72, 209, 204, 0.45); color: var(--s8a3-powder); }
.s8a3-link-card .material-icons, .s8a3-link-card i { color: var(--s8a3-cyan); font-size: 22px; }
.s8a3-link-card b { font-size: 13px; display: block; }
.s8a3-link-card small { color: var(--s8a3-muted); font-size: 11px; }

/* ---------------- FAQ ---------------- */
.s8a3-faq-item {
  background: var(--s8a3-card); border: 1px solid rgba(72, 209, 204, 0.12);
  border-radius: 12px; margin-bottom: 8px; overflow: hidden;
}
.s8a3-faq-q {
  width: 100%; text-align: left; background: transparent; border: 0;
  padding: 13px 14px; color: var(--s8a3-text); font-size: 13.5px; font-weight: 700;
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
}
.s8a3-faq-q .s8a3-plus { color: var(--s8a3-cyan); font-size: 16px; transition: transform 0.2s ease; }
.s8a3-faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.25s ease;
  padding: 0 14px; color: var(--s8a3-muted); font-size: 12.5px;
}
.s8a3-faq-item.s8a3-open .s8a3-faq-a { max-height: 240px; padding: 0 14px 14px; }
.s8a3-faq-item.s8a3-open .s8a3-plus { transform: rotate(45deg); }

/* ---------------- Footer ---------------- */
.s8a3-footer {
  background: var(--s8a3-bg-soft); border-top: 1px solid rgba(72, 209, 204, 0.18);
  padding: 22px 0 96px; color: var(--s8a3-muted); font-size: 12px;
}
.s8a3-footer-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.s8a3-footer h4 { color: var(--s8a3-text); font-size: 13px; margin: 0 0 6px; }
.s8a3-footer a { color: var(--s8a3-muted); display: block; padding: 3px 0; font-size: 12px; }
.s8a3-footer a:hover { color: var(--s8a3-cyan); }
.s8a3-footer-bottom {
  margin-top: 14px; padding-top: 12px; border-top: 1px solid rgba(72, 209, 204, 0.12);
  text-align: center; font-size: 11px; color: var(--s8a3-muted);
}

/* ---------------- Mobile bottom nav ---------------- */
.s8a3-bottom-nav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  max-width: var(--s8a3-max); margin: 0 auto;
  height: 62px;
  background: rgba(13, 17, 23, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(72, 209, 204, 0.25);
  display: flex; justify-content: space-around; align-items: stretch;
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.4);
}
.s8a3-nav-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; min-width: 60px; min-height: 60px;
  background: transparent; border: 0; color: var(--s8a3-muted);
  font-size: 10px; font-weight: 600; cursor: pointer;
  position: relative; transition: color 0.2s ease;
}
.s8a3-nav-btn .material-icons,
.s8a3-nav-btn i { font-size: 22px; }
.s8a3-nav-btn:hover { color: var(--s8a3-cyan); }
.s8a3-nav-btn.s8a3-active { color: var(--s8a3-cyan); }
.s8a3-nav-btn.s8a3-active::before {
  content: ""; position: absolute; top: 0; width: 26px; height: 3px; border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--s8a3-green), var(--s8a3-blue));
}
.s8a3-nav-btn.s8a3-cta {
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; border-radius: 14px 14px 0 0; margin-top: -14px; height: 76px;
  box-shadow: 0 -4px 14px rgba(30, 144, 255, 0.35);
}
.s8a3-nav-btn.s8a3-cta .material-icons,
.s8a3-nav-btn.s8a3-cta i { font-size: 24px; }

/* ---------------- Slide-in mobile menu ---------------- */
.s8a3-menu-mask {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55);
  opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s;
  z-index: 9998;
}
.s8a3-menu-mask.s8a3-is-visible { opacity: 1; visibility: visible; }
.s8a3-mobile-menu {
  position: fixed; top: 0; right: -86%; width: 86%; max-width: 340px;
  height: 100%; z-index: 9999;
  background: linear-gradient(180deg, #0e1822, #0a121b);
  border-left: 1px solid rgba(72, 209, 204, 0.25);
  transform: translateX(0); transition: transform 0.3s ease;
  padding: 18px 16px; overflow-y: auto;
}
.s8a3-mobile-menu:not(.s8a3-is-open) { transform: translateX(100%); }
.s8a3-menu-head {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px;
}
.s8a3-menu-head b { color: var(--s8a3-text); font-size: 15px; }
.s8a3-menu-close {
  background: rgba(72, 209, 204, 0.12); border: 0; color: var(--s8a3-cyan);
  width: 32px; height: 32px; border-radius: 8px; font-size: 16px; cursor: pointer;
}
.s8a3-menu-link {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 12px; border-radius: 10px; color: var(--s8a3-text);
  font-size: 13.5px; font-weight: 600; margin-bottom: 4px;
  border: 1px solid transparent;
}
.s8a3-menu-link:hover { background: rgba(72, 209, 204, 0.08); border-color: rgba(72, 209, 204, 0.2); }
.s8a3-menu-link i, .s8a3-menu-link .material-icons { color: var(--s8a3-cyan); font-size: 20px; }
.s8a3-menu-divider { height: 1px; background: rgba(72, 209, 204, 0.15); margin: 10px 0; }

/* ---------------- Back to top ---------------- */
.s8a3-to-top {
  position: fixed; right: 14px; bottom: 76px; z-index: 999;
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--s8a3-green), var(--s8a3-blue));
  color: #fff; border: 0; font-size: 20px; cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all 0.25s ease; box-shadow: var(--s8a3-shadow);
}
.s8a3-to-top.s8a3-show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------------- Reveal animation ---------------- */
.s8a3-reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.5s ease, transform 0.5s ease; }
.s8a3-reveal.s8a3-in { opacity: 1; transform: none; }

/* ---------------- Desktop ---------------- */
.s8a3-desktop-only { display: none !important; }
@media (min-width: 769px) {
  .s8a3-bottom-nav { display: none !important; }
  .s8a3-menu-btn { display: none !important; }
  .s8a3-desktop-only { display: flex !important; }
  body { font-size: 16px; }
}
.s8a3-desktop-nav { display: none; gap: 18px; }
.s8a3-desktop-nav a { color: var(--s8a3-muted); font-size: 13px; font-weight: 600; }
.s8a3-desktop-nav a:hover { color: var(--s8a3-cyan); }
@media (min-width: 769px) { .s8a3-desktop-nav { display: flex; } }

/* ---------------- Mobile 430px shell ---------------- */
@media (max-width: 430px) {
  body { font-size: 14.5px; }
  .s8a3-hero h1 { font-size: 24px; }
  .s8a3-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .s8a3-card-name { font-size: 10px; padding: 5px 4px 6px; }
  .s8a3-section-title { font-size: 16px; }
  .s8a3-btn { padding: 8px 12px; font-size: 12px; }
  main { padding-bottom: 84px; }
}

@media (max-width: 360px) {
  .s8a3-grid { grid-template-columns: repeat(2, 1fr); }
  .s8a3-hero h1 { font-size: 21px; }
}

/* Always reserve space for fixed bottom nav on mobile */
@media (max-width: 768px) {
  main { padding-bottom: 84px; }
}