/* ============================================================
 * f1688.cyou - Core stylesheet (shared module)
 * Class prefix: s6ad-
 * Mobile-first, container capped at max-width: 430px
 * Palette: #4B0082 / #FDF5E6 / #9400D3 / #0E1621 / #800080
 * ============================================================ */

:root {
  --s6ad-primary: #4B0082;
  --s6ad-bg: #0E1621;
  --s6ad-text: #FDF5E6;
  --s6ad-accent: #9400D3;
  --s6ad-brand: #800080;
  --s6ad-gold: #FFD15C;
  --s6ad-card: #16213a;
  --s6ad-card-2: #1f2c4d;
  --s6ad-border: #2a3858;
  --s6ad-muted: #9aa6c4;
  --s6ad-green: #28d17c;
  --s6ad-radius: 14px;
}

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

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

body {
  font-family: "Be Vietnam", "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--s6ad-bg);
  color: var(--s6ad-text);
  line-height: 1.5rem;
  font-size: 1.5rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--s6ad-text); text-decoration: none; }

/* ---------- Layout ---------- */
.s6ad-wrapper {
  width: 100%;
  max-width: 430px;             /* mobile-first cap */
  margin: 0 auto;
  background: var(--s6ad-bg);
  min-height: 100vh;
  position: relative;
  box-shadow: 0 0 40px rgba(0,0,0,.45);
}

.s6ad-container {
  width: 100%;
  max-width: 430px;
  padding: 0 1.4rem;
  margin: 0 auto;
}

main { padding-bottom: 9rem; }   /* clearance for bottom nav */

/* ---------- Header ---------- */
.s6ad-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(90deg, var(--s6ad-primary), var(--s6ad-accent));
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.s6ad-header-inner {
  max-width: 430px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .7rem 1rem;
}
.s6ad-logo {
  display: flex; align-items: center; gap: .6rem;
  flex: 1; min-width: 0;
}
.s6ad-logo img { width: 2.8rem; height: 2.8rem; border-radius: 8px; }
.s6ad-logo b {
  font-size: 1.8rem; color: var(--s6ad-text); font-weight: 800;
  letter-spacing: .3px;
}
.s6ad-logo span { color: var(--s6ad-gold); }

.s6ad-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 3.6rem; padding: 0 1.2rem;
  border-radius: 10px; border: 0;
  font-size: 1.4rem; font-weight: 700; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, filter .15s;
}
.s6ad-btn:active { transform: scale(.96); }
.s6ad-btn-register {
  background: var(--s6ad-gold); color: #3a2200;
  box-shadow: 0 4px 12px rgba(255,209,92,.35);
}
.s6ad-btn-login {
  background: transparent; color: var(--s6ad-text);
  border: 1.5px solid rgba(255,255,255,.6);
}
.s6ad-btn-cta {
  background: linear-gradient(90deg, var(--s6ad-accent), var(--s6ad-brand));
  color: var(--s6ad-text);
  box-shadow: 0 6px 18px rgba(148,0,211,.4);
}

#s6ad-nav-toggle {
  background: rgba(255,255,255,.12); color: var(--s6ad-text);
  border: 0; width: 3.4rem; height: 3.4rem; border-radius: 9px;
  font-size: 1.8rem; cursor: pointer;
}

/* ---------- Expandable nav menu ---------- */
#s6ad-nav-menu {
  max-height: 0; overflow: hidden;
  background: rgba(14,22,33,.98);
  transition: max-height .32s ease;
  border-top: 1px solid var(--s6ad-border);
}
#s6ad-nav-menu.s6ad-open { max-height: 480px; }
.s6ad-nav-list {
  max-width: 430px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: .5rem; padding: 1rem;
}
.s6ad-nav-list a {
  display: flex; align-items: center; gap: .6rem;
  padding: .9rem 1rem; font-size: 1.4rem; font-weight: 600;
  background: var(--s6ad-card); border-radius: 9px;
  border: 1px solid var(--s6ad-border);
  transition: background .15s, transform .15s;
}
.s6ad-nav-list a:active { transform: scale(.97); }
.s6ad-nav-list a i { color: var(--s6ad-gold); font-size: 1.6rem; }

/* ---------- Hero carousel ---------- */
.s6ad-hero {
  position: relative;
  margin: 6.4rem 0 1rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.s6ad-slides { position: relative; }
.s6ad-slide {
  position: relative; display: none;
  cursor: pointer;
}
.s6ad-slide.s6ad-active { display: block; }
.s6ad-slide img { width: 100%; height: 19rem; object-fit: cover; }
.s6ad-slide-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1.2rem 1.4rem .9rem;
  background: linear-gradient(transparent, rgba(14,22,33,.92));
}
.s6ad-slide-cap b { font-size: 1.7rem; color: var(--s6ad-gold); display: block; }
.s6ad-slide-cap span { font-size: 1.25rem; color: var(--s6ad-text); }
.s6ad-dots {
  position: absolute; bottom: .8rem; right: 1rem;
  display: flex; gap: .5rem;
}
.s6ad-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,.4);
}
.s6ad-dot.s6ad-active { background: var(--s6ad-gold); }

/* ---------- Section ---------- */
.s6ad-section { padding: 1.6rem 0; }
.s6ad-section-title {
  display: flex; align-items: center; gap: .7rem;
  margin-bottom: 1rem;
}
.s6ad-section-title h2 {
  font-size: 1.8rem; font-weight: 800; color: var(--s6ad-text);
}
.s6ad-section-title .s6ad-bar {
  width: 4px; height: 1.9rem; border-radius: 4px;
  background: linear-gradient(var(--s6ad-gold), var(--s6ad-accent));
}
.s6ad-section-title small { color: var(--s6ad-muted); font-size: 1.2rem; }

.s6ad-lead {
  color: var(--s6ad-text); font-size: 1.45rem; margin-bottom: 1rem;
}
.s6ad-muted { color: var(--s6ad-muted); }
.s6ad-link {
  color: var(--s6ad-gold); font-weight: 700; text-decoration: underline;
}

/* ---------- Game grid ---------- */
.s6ad-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem;
}
.s6ad-game {
  background: var(--s6ad-card); border-radius: 12px;
  overflow: hidden; cursor: pointer;
  border: 1px solid var(--s6ad-border);
  transition: transform .15s, box-shadow .15s;
}
.s6ad-game:active { transform: scale(.96); box-shadow: 0 6px 16px rgba(148,0,211,.35); }
.s6ad-game img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  background: #0b1322;
}
.s6ad-game-name {
  padding: .5rem .4rem .6rem;
  font-size: 1.15rem; font-weight: 600;
  text-align: center; color: var(--s6ad-text);
  line-height: 1.2rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.s6ad-cat-tag {
  display: inline-block; font-size: 1.2rem; font-weight: 700;
  color: var(--s6ad-gold);
  background: rgba(255,209,92,.12);
  padding: .3rem .8rem; border-radius: 20px;
  margin: .2rem 0 1rem;
  border: 1px solid rgba(255,209,92,.3);
}

/* ---------- Cards ---------- */
.s6ad-card {
  background: var(--s6ad-card); border-radius: 12px;
  padding: 1.2rem; border: 1px solid var(--s6ad-border);
  margin-bottom: 1rem;
}
.s6ad-card h3 {
  font-size: 1.55rem; margin-bottom: .6rem; color: var(--s6ad-gold);
}
.s6ad-card p { font-size: 1.35rem; color: var(--s6ad-text); }
.s6ad-card ul { padding-left: 1.4rem; color: var(--s6ad-text); }
.s6ad-card li { font-size: 1.35rem; margin-bottom: .35rem; }

.s6ad-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }

/* ---------- FAQ ---------- */
.s6ad-faq { border-top: 1px solid var(--s6ad-border); }
.s6ad-faq details {
  border-bottom: 1px solid var(--s6ad-border);
  padding: 1rem .2rem;
}
.s6ad-faq summary {
  font-size: 1.45rem; font-weight: 700; color: var(--s6ad-text);
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.s6ad-faq summary::-webkit-details-marker { display: none; }
.s6ad-faq summary::after { content: "+"; color: var(--s6ad-gold); font-size: 1.6rem; }
.s6ad-faq details[open] summary::after { content: "–"; }
.s6ad-faq p { margin-top: .6rem; color: var(--s6ad-muted); font-size: 1.3rem; }

/* ---------- RTP / stat bars ---------- */
.s6ad-rtp-row { margin-bottom: .9rem; }
.s6ad-rtp-row .lbl { display: flex; justify-content: space-between; font-size: 1.3rem; margin-bottom: .3rem; }
.s6ad-rtp-bar { height: 8px; background: #0b1322; border-radius: 5px; overflow: hidden; }
.s6ad-rtp-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--s6ad-gold), var(--s6ad-accent)); }

/* ---------- Testimonials ---------- */
.s6ad-quote {
  background: var(--s6ad-card-2); border-radius: 12px;
  padding: 1rem 1.1rem; margin-bottom: .8rem;
  border-left: 3px solid var(--s6ad-gold);
}
.s6ad-quote .who { font-weight: 700; color: var(--s6ad-gold); font-size: 1.3rem; }
.s6ad-quote .stars { color: var(--s6ad-gold); font-size: 1.2rem; margin: .2rem 0; }
.s6ad-quote p { font-size: 1.3rem; color: var(--s6ad-text); }

/* ---------- Payment chips ---------- */
.s6ad-pay { display: flex; flex-wrap: wrap; gap: .6rem; }
.s6ad-pay span {
  background: var(--s6ad-card); border: 1px solid var(--s6ad-border);
  padding: .55rem 1rem; border-radius: 20px; font-size: 1.2rem; color: var(--s6ad-text);
}
.s6ad-pay i { color: var(--s6ad-gold); margin-right: .3rem; }

/* ---------- Winners ---------- */
.s6ad-winner {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--s6ad-card); border: 1px solid var(--s6ad-border);
  padding: .7rem 1rem; border-radius: 10px; margin-bottom: .5rem;
}
.s6ad-winner .nm { font-size: 1.3rem; }
.s6ad-winner .amt { color: var(--s6ad-green); font-weight: 800; font-size: 1.4rem; }

/* ---------- CTA banner ---------- */
.s6ad-cta {
  background: linear-gradient(135deg, var(--s6ad-primary), var(--s6ad-accent));
  border-radius: 16px; padding: 1.4rem; text-align: center;
  margin: 1.4rem 0;
}
.s6ad-cta h3 { color: var(--s6ad-gold); font-size: 1.8rem; margin-bottom: .4rem; }
.s6ad-cta p { font-size: 1.3rem; margin-bottom: .9rem; }
.s6ad-cta .s6ad-btn { width: 100%; }

/* ---------- Reveal animation ---------- */
.s6ad-reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.s6ad-reveal.s6ad-in { opacity: 1; transform: translateY(0); }

/* ---------- Footer ---------- */
.s6ad-footer {
  background: #060c16; padding: 2rem 0 1rem;
  border-top: 1px solid var(--s6ad-border);
}
.s6ad-footer .s6ad-brand-line { color: var(--s6ad-muted); font-size: 1.25rem; margin-bottom: 1rem; }
.s6ad-footer .s6ad-promo-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-bottom: 1rem;
}
.s6ad-footer .s6ad-promo-row button {
  background: linear-gradient(90deg, var(--s6ad-accent), var(--s6ad-brand));
  color: var(--s6ad-text); border: 0; border-radius: 9px;
  padding: .8rem; font-size: 1.3rem; font-weight: 700; cursor: pointer;
}
.s6ad-footer-links {
  display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; margin-bottom: 1rem;
}
.s6ad-footer-links a {
  font-size: 1.2rem; color: var(--s6ad-muted);
  padding: .35rem 0;
}
.s6ad-footer-links a:hover { color: var(--s6ad-gold); }
.s6ad-copy { color: var(--s6ad-muted); font-size: 1.15rem; text-align: center; padding-top: 1rem; border-top: 1px solid var(--s6ad-border); }

/* ---------- Bottom nav (mobile only) ---------- */
.s6ad-bottomnav {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 1000;
  max-width: 430px; margin: 0 auto;
  height: 6rem;
  background: linear-gradient(180deg, rgba(75,0,130,.98), rgba(14,22,33,1));
  border-top: 1px solid var(--s6ad-border);
  display: flex; justify-content: space-around; align-items: stretch;
  box-shadow: 0 -6px 18px rgba(0,0,0,.4);
}
.s6ad-bottomnav .s6ad-navbtn {
  flex: 1; min-width: 60px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: .15rem; color: var(--s6ad-muted);
  background: transparent; border: 0; cursor: pointer;
  text-decoration: none;
  transition: color .15s, transform .15s;
}
.s6ad-bottomnav .s6ad-navbtn:active { transform: scale(.92); }
.s6ad-bottomnav .s6ad-navbtn i,
.s6ad-bottomnav .s6ad-navbtn span.icon { font-size: 2.2rem; line-height: 1; }
.s6ad-bottomnav .s6ad-navbtn .lbl { font-size: 1.05rem; font-weight: 600; }
.s6ad-bottomnav .s6ad-navbtn.s6ad-current { color: var(--s6ad-gold); }
.s6ad-bottomnav .s6ad-navbtn.s6ad-promo { color: var(--s6ad-text); }
.s6ad-bottomnav .s6ad-navbtn.s6ad-promo i { color: var(--s6ad-gold); }

/* ---------- Responsive ---------- */
@media (min-width: 769px) {
  .s6ad-bottomnav { display: none; }
  main { padding-bottom: 2rem; }
}
@media (max-width: 768px) {
  main { padding-bottom: 8rem; }
}