/* ===========================================================
 * arion app - style-bf4b.css
 * Mobile-first responsive styles. All classes use sbf4- prefix.
 * Palette: #4169E1 | #FFEFD5 | #141414 | #48D1CC | #F0E68C
 * =========================================================== */

/* ---------- Design tokens ---------- */
:root {
  --sbf4-primary: #4169E1;
  --sbf4-primary-dark: #2c4fb8;
  --sbf4-cream: #FFEFD5;
  --sbf4-bg: #141414;
  --sbf4-bg-2: #1c1f26;
  --sbf4-bg-3: #232834;
  --sbf4-teal: #48D1CC;
  --sbf4-gold: #F0E68C;
  --sbf4-text: #FFEFD5;
  --sbf4-text-dim: #b9c0d4;
  --sbf4-white: #ffffff;
  --sbf4-shadow: 0 8px 24px rgba(0,0,0,0.45);
  --sbf4-radius: 14px;
  --sbf4-radius-sm: 10px;
  --sbf4-radius-lg: 22px;
  --sbf4-header-h: 60px;
  --sbf4-bottomnav-h: 62px;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 62.5%; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Segoe UI", "Helvetica Neue", Roboto, Arial, sans-serif;
  background: var(--sbf4-bg);
  color: var(--sbf4-text);
  line-height: 1.5;
  font-size: 1.5rem;
  overflow-x: hidden;
}
a { color: var(--sbf4-gold); text-decoration: none; }
a:focus-visible { outline: 2px solid var(--sbf4-teal); outline-offset: 2px; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ---------- Layout containers ---------- */
.sbf4-wrapper { width: 100%; max-width: 430px; margin: 0 auto; position: relative; }
.sbf4-container { padding: 0 14px; }
main { padding-bottom: calc(var(--sbf4-bottomnav-h) + 24px); }

/* ---------- Header ---------- */
.sbf4-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--sbf4-header-h);
  background: linear-gradient(90deg, #0f1118 0%, #1a2342 60%, #0f1118 100%);
  border-bottom: 1px solid rgba(72,209,204,0.25);
  display: flex; align-items: center;
}
.sbf4-header-inner {
  width: 100%; max-width: 430px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px;
}
.sbf4-brand { display: flex; align-items: center; gap: 8px; color: var(--sbf4-white); }
.sbf4-brand img { width: 30px; height: 30px; border-radius: 8px; }
.sbf4-brand-text { font-weight: 800; font-size: 1.7rem; letter-spacing: 0.4px;
  background: linear-gradient(90deg, var(--sbf4-gold), var(--sbf4-teal));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.sbf4-header-actions { display: flex; align-items: center; gap: 8px; }
.sbf4-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 999px;
  font-weight: 700; font-size: 1.3rem; cursor: pointer;
  border: none; min-height: 36px; transition: transform .15s ease, box-shadow .2s ease;
}
.sbf4-btn:active { transform: scale(0.96); }
.sbf4-btn-login { background: transparent; color: var(--sbf4-cream);
  border: 1.5px solid var(--sbf4-teal); }
.sbf4-btn-login:hover { background: rgba(72,209,204,0.12); }
.sbf4-btn-register { background: linear-gradient(90deg, var(--sbf4-primary), var(--sbf4-teal));
  color: #fff; box-shadow: 0 4px 14px rgba(65,105,225,0.45); }
.sbf4-btn-register:hover { box-shadow: 0 6px 18px rgba(72,209,204,0.55); }
.sbf4-hamburger {
  background: transparent; border: none; color: var(--sbf4-cream);
  font-size: 2.2rem; cursor: pointer; padding: 4px 6px; display: flex; align-items: center;
}

/* ---------- Mobile menu drawer ---------- */
.sbf4-mobile-menu {
  position: fixed; top: 0; right: -85%; width: 80%; height: 100vh;
  background: var(--sbf4-bg-2); z-index: 9999;
  transition: right .28s ease; padding: 80px 18px 30px; overflow-y: auto;
  border-left: 1px solid rgba(240,230,140,0.15);
}
.sbf4-menu-open { right: 0; }
.sbf4-mobile-menu h4 { color: var(--sbf4-gold); font-size: 1.4rem;
  text-transform: uppercase; letter-spacing: 1px; margin: 18px 0 8px; }
.sbf4-mobile-menu a {
  display: block; padding: 11px 12px; color: var(--sbf4-text);
  border-radius: var(--sbf4-radius-sm); font-size: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.sbf4-mobile-menu a:hover { background: rgba(72,209,204,0.1); color: var(--sbf4-teal); }
.sbf4-menu-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55);
  z-index: 9998; opacity: 0; visibility: hidden; transition: opacity .25s ease;
}
.sbf4-overlay-show { opacity: 1; visibility: visible; }

/* ---------- Hero / Carousel ---------- */
.sbf4-hero { margin-top: calc(var(--sbf4-header-h) + 10px); }
.sbf4-carousel { position: relative; border-radius: var(--sbf4-radius-lg); overflow: hidden;
  box-shadow: var(--sbf4-shadow); }
.sbf4-slide {
  position: relative; display: none; cursor: pointer;
}
.sbf4-slide-active { display: block; }
.sbf4-slide img { width: 100%; height: 200px; object-fit: cover; }
.sbf4-slide-caption {
  position: absolute; left: 14px; bottom: 14px; right: 14px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  color: #fff; padding: 18px 12px 8px; border-radius: 0 0 var(--sbf4-radius-lg) var(--sbf4-radius-lg);
}
.sbf4-slide-caption h2 { font-size: 1.9rem; color: var(--sbf4-gold); }
.sbf4-slide-caption p { font-size: 1.3rem; color: var(--sbf4-cream); }
.sbf4-dots { display: flex; gap: 6px; justify-content: center; padding: 8px 0; }
.sbf4-dot {
  width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,0.3);
  border: none; cursor: pointer;
}
.sbf4-dot-active { background: var(--sbf4-teal); width: 24px; border-radius: 6px; }

/* ---------- Sections ---------- */
.sbf4-section { padding: 24px 0 8px; }
.sbf4-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.sbf4-section-title { font-size: 1.9rem; font-weight: 800; color: var(--sbf4-white);
  display: flex; align-items: center; gap: 8px; }
.sbf4-section-title i { color: var(--sbf4-gold); }
.sbf4-section-sub { font-size: 1.3rem; color: var(--sbf4-text-dim); margin-top: 4px; }
.sbf4-link-more { color: var(--sbf4-teal); font-size: 1.3rem; font-weight: 600; }

/* ---------- H1 page title ---------- */
.sbf4-h1 {
  font-size: 2.3rem; line-height: 1.25; color: var(--sbf4-white);
  text-align: center; margin: 18px 0 8px; font-weight: 800;
}
.sbf4-h1 span { color: var(--sbf4-gold); }
.sbf4-subtitle { text-align: center; color: var(--sbf4-text-dim); font-size: 1.4rem; margin-bottom: 12px; }

/* ---------- Game grid ---------- */
.sbf4-game-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
.sbf4-game-card {
  background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius);
  overflow: hidden; cursor: pointer; position: relative;
  border: 1px solid rgba(255,255,255,0.06); transition: transform .18s ease, border-color .2s;
}
.sbf4-game-card:active { transform: scale(0.95); }
.sbf4-game-card:hover { border-color: var(--sbf4-teal); }
.sbf4-game-card img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.sbf4-game-name {
  padding: 6px 6px 8px; font-size: 1.15rem; color: var(--sbf4-cream);
  text-align: center; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sbf4-game-badge {
  position: absolute; top: 6px; left: 6px; background: var(--sbf4-primary);
  color: #fff; font-size: 0.95rem; padding: 2px 7px; border-radius: 999px; font-weight: 700;
}
.sbf4-game-badge.hot { background: linear-gradient(90deg,#e6533c,#F0E68C); color: #141414; }

/* ---------- Filter chips ---------- */
.sbf4-chips { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 10px; scrollbar-width: none; }
.sbf4-chips::-webkit-scrollbar { display: none; }
.sbf4-chip {
  flex: 0 0 auto; padding: 7px 14px; border-radius: 999px;
  background: var(--sbf4-bg-3); color: var(--sbf4-cream); font-size: 1.25rem; font-weight: 600;
  border: 1px solid rgba(255,255,255,0.08); cursor: pointer; white-space: nowrap;
}
.sbf4-chip-active { background: linear-gradient(90deg,var(--sbf4-primary),var(--sbf4-teal)); color: #fff; border-color: transparent; }

/* ---------- Promo CTA banner ---------- */
.sbf4-cta {
  background: linear-gradient(120deg,#4169E1 0%, #48D1CC 100%);
  border-radius: var(--sbf4-radius-lg); padding: 18px; color: #fff;
  display: flex; flex-direction: column; gap: 8px; margin: 18px 0;
  box-shadow: var(--sbf4-shadow);
}
.sbf4-cta h3 { font-size: 1.9rem; }
.sbf4-cta p { font-size: 1.35rem; opacity: 0.95; }
.sbf4-cta-actions { display: flex; gap: 10px; margin-top: 6px; }
.sbf4-cta-actions .sbf4-btn { background: #fff; color: var(--sbf4-primary); }
.sbf4-cta-actions .sbf4-btn.sbf4-btn-ghost { background: rgba(255,255,255,0.18); color: #fff; }

/* ---------- Info / paragraph cards ---------- */
.sbf4-prose { background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius); padding: 16px;
  border: 1px solid rgba(255,255,255,0.05); }
.sbf4-prose h2 { font-size: 1.8rem; color: var(--sbf4-gold); margin-bottom: 8px; }
.sbf4-prose h3 { font-size: 1.5rem; color: var(--sbf4-teal); margin: 12px 0 6px; }
.sbf4-prose p { color: var(--sbf4-text-dim); margin-bottom: 10px; font-size: 1.4rem; }
.sbf4-prose strong { color: var(--sbf4-cream); }
.sbf4-prose a { color: var(--sbf4-teal); font-weight: 700; }

/* ---------- Step list ---------- */
.sbf4-steps { display: flex; flex-direction: column; gap: 10px; }
.sbf4-step {
  display: flex; gap: 12px; background: var(--sbf4-bg-2);
  border-radius: var(--sbf4-radius); padding: 12px; border-left: 4px solid var(--sbf4-teal);
}
.sbf4-step-num {
  flex: 0 0 36px; height: 36px; border-radius: 50%;
  background: var(--sbf4-primary); color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.6rem;
}
.sbf4-step-body h4 { font-size: 1.5rem; color: var(--sbf4-white); margin-bottom: 4px; }
.sbf4-step-body p { font-size: 1.35rem; color: var(--sbf4-text-dim); }

/* ---------- Feature grid ---------- */
.sbf4-feature-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.sbf4-feature {
  background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius); padding: 14px;
  text-align: center; border: 1px solid rgba(255,255,255,0.05);
}
.sbf4-feature i { font-size: 2.6rem; color: var(--sbf4-gold); margin-bottom: 6px; }
.sbf4-feature h4 { font-size: 1.4rem; color: var(--sbf4-white); margin-bottom: 4px; }
.sbf4-feature p { font-size: 1.25rem; color: var(--sbf4-text-dim); }

/* ---------- RTP compact table ---------- */
.sbf4-rtp-table { width: 100%; border-collapse: collapse; background: var(--sbf4-bg-2);
  border-radius: var(--sbf4-radius); overflow: hidden; }
.sbf4-rtp-table th, .sbf4-rtp-table td { padding: 9px 10px; text-align: left; font-size: 1.3rem; border-bottom: 1px solid rgba(255,255,255,0.06); }
.sbf4-rtp-table th { color: var(--sbf4-gold); background: rgba(65,105,225,0.18); }
.sbf4-rtp-table td { color: var(--sbf4-cream); }
.sbf4-rtp-bar { height: 6px; background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; }
.sbf4-rtp-bar span { display: block; height: 100%; background: linear-gradient(90deg,var(--sbf4-teal),var(--sbf4-gold)); }

/* ---------- Testimonial ---------- */
.sbf4-testimonial {
  background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius); padding: 14px;
  margin-bottom: 10px; border-left: 4px solid var(--sbf4-gold);
}
.sbf4-testimonial p { font-style: italic; color: var(--sbf4-cream); font-size: 1.35rem; }
.sbf4-testimonial cite { display: block; margin-top: 6px; color: var(--sbf4-teal); font-size: 1.25rem; font-weight: 700; font-style: normal; }

/* ---------- Winner list ---------- */
.sbf4-winner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 12px; background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius-sm);
  margin-bottom: 7px; border: 1px solid rgba(255,255,255,0.05);
}
.sbf4-winner span { color: var(--sbf4-cream); font-size: 1.3rem; }
.sbf4-winner b { color: var(--sbf4-gold); }

/* ---------- Payment chips ---------- */
.sbf4-pay-row { display: flex; flex-wrap: wrap; gap: 8px; }
.sbf4-pay {
  background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius-sm);
  padding: 8px 12px; font-size: 1.25rem; color: var(--sbf4-cream);
  display: flex; align-items: center; gap: 6px; border: 1px solid rgba(255,255,255,0.08);
}
.sbf4-pay i { color: var(--sbf4-teal); }

/* ---------- FAQ ---------- */
.sbf4-faq { background: var(--sbf4-bg-2); border-radius: var(--sbf4-radius); padding: 14px; margin-bottom: 10px; border: 1px solid rgba(255,255,255,0.05); }
.sbf4-faq h3 { font-size: 1.5rem; color: var(--sbf4-gold); margin-bottom: 6px; }
.sbf4-faq p { font-size: 1.35rem; color: var(--sbf4-text-dim); }

/* ---------- Footer ---------- */
.sbf4-footer { background: #0b0d13; padding: 22px 14px 18px; border-top: 1px solid rgba(72,209,204,0.2); }
.sbf4-footer h4 { color: var(--sbf4-gold); font-size: 1.5rem; margin-bottom: 8px; }
.sbf4-footer p { color: var(--sbf4-text-dim); font-size: 1.3rem; margin-bottom: 12px; }
.sbf4-footer-links { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.sbf4-footer-links a {
  flex: 1 1 45%; background: var(--sbf4-bg-3); color: var(--sbf4-cream);
  padding: 8px 10px; border-radius: var(--sbf4-radius-sm); font-size: 1.25rem; text-align: center;
}
.sbf4-footer-links a:hover { background: var(--sbf4-primary); color: #fff; }
.sbf4-footer-promo { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.sbf4-footer-copy { text-align: center; color: var(--sbf4-text-dim); font-size: 1.2rem; padding-top: 10px; border-top: 1px solid rgba(255,255,255,0.05); }

/* ---------- Bottom navigation ---------- */
.sbf4-bottomnav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  height: var(--sbf4-bottomnav-h);
  background: linear-gradient(90deg,#0f1118,#1a2342,#0f1118);
  border-top: 1px solid rgba(72,209,204,0.3);
  display: flex; justify-content: space-around; align-items: stretch;
  max-width: 430px; margin: 0 auto;
}
.sbf4-bottomnav a, .sbf4-bottomnav button {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; background: transparent; border: none; color: var(--sbf4-cream);
  font-size: 1.05rem; font-weight: 600; cursor: pointer; min-width: 60px; min-height: 60px;
  position: relative; transition: color .2s ease, transform .15s ease;
}
.sbf4-bottomnav a i, .sbf4-bottomnav button i { font-size: 2.2rem; }
.sbf4-bottomnav a.active, .sbf4-bottomnav button.active { color: var(--sbf4-gold); }
.sbf4-bottomnav a.active::before, .sbf4-bottomnav button.active::before {
  content: ''; position: absolute; top: 0; left: 25%; right: 25%; height: 3px; border-radius: 0 0 4px 4px;
  background: var(--sbf4-gold);
}
.sbf4-bottomnav a:active, .sbf4-bottomnav button:active { transform: scale(0.92); }
.sbf4-bottomnav .material-icons { font-size: 2.4rem; }

/* ---------- Reveal animation ---------- */
.sbf4-reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.sbf4-reveal-show { opacity: 1; transform: translateY(0); }

/* ---------- Desktop overrides ---------- */
@media (min-width: 769px) {
  body { background: #0b0d13; }
  .sbf4-wrapper { max-width: 1100px; }
  .sbf4-header-inner { max-width: 1100px; }
  .sbf4-bottomnav { display: none; }
  main { padding-bottom: 40px; }
  .sbf4-game-grid { grid-template-columns: repeat(6, 1fr); }
  .sbf4-feature-grid { grid-template-columns: repeat(4, 1fr); }
  .sbf4-hamburger { display: none; }
  .sbf4-slide img { height: 360px; }
  .sbf4-h1 { font-size: 2.8rem; }
}

@media (max-width: 768px) {
  .sbf4-game-grid { grid-template-columns: repeat(3, 1fr); }
}