/* ===========================================================
   Casino App — ui90- theme stylesheet (Vietnam mobile-first)
   Color palette: #273746 | #FFB3BA | #FF1493 | #AD1457
   =========================================================== */

:root {
  --ui90-bg: #273746;
  --ui90-bg-deep: #1d2a35;
  --ui90-bg-card: #2e4151;
  --ui90-pink: #FF1493;
  --ui90-pink-soft: #FFB3BA;
  --ui90-maroon: #AD1457;
  --ui90-text: #f4f7fa;
  --ui90-text-muted: #c2ccd6;
  --ui90-gold: #ffd479;
  --ui90-line: rgba(255, 179, 186, 0.18);
  --ui90-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
  --ui90-radius: 14px;
  --ui90-radius-sm: 10px;
  --ui90-header-h: 56px;
  --ui90-bottomnav-h: 62px;
  --ui90-max: 430px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 62.5%; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Be Vietnam Pro", "Segoe UI", Roboto, system-ui, sans-serif;
  background: linear-gradient(160deg, var(--ui90-bg) 0%, var(--ui90-bg-deep) 100%);
  color: var(--ui90-text);
  line-height: 1.5;
  font-size: 1.5rem;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--ui90-pink-soft); text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
ul { list-style: none; }

/* ===== Layout ===== */
.ui90-container { width: 100%; max-width: var(--ui90-max); margin: 0 auto; padding: 0 1.2rem; }
.ui90-wrapper { padding-bottom: calc(var(--ui90-bottomnav-h) + 1rem); }
.ui90-section { padding: 2rem 0 1rem; }
.ui90-section-title {
  font-size: 1.9rem; color: var(--ui90-text); margin-bottom: 1rem;
  display: flex; align-items: center; gap: .8rem;
  border-left: 4px solid var(--ui90-pink); padding-left: 1rem;
}
.ui90-section-title .material-icons-outlined,
.ui90-section-title .fas { color: var(--ui90-pink-soft); font-size: 2rem; }
.ui90-eyebrow {
  display: inline-block; font-size: 1.2rem; letter-spacing: .15em;
  color: var(--ui90-gold); text-transform: uppercase; margin-bottom: .6rem;
}

/* ===== Header ===== */
.ui90-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(39, 55, 70, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ui90-line);
}
.ui90-header-row {
  height: var(--ui90-header-h);
  display: flex; align-items: center; gap: .8rem;
  max-width: var(--ui90-max); margin: 0 auto; padding: 0 1rem;
}
.ui90-logo { display: flex; align-items: center; gap: .7rem; color: var(--ui90-text); }
.ui90-logo img { width: 28px; height: 28px; border-radius: 6px; }
.ui90-logo strong { font-size: 1.6rem; color: var(--ui90-pink-soft); letter-spacing: .02em; }
.ui90-header-actions { margin-left: auto; display: flex; gap: .6rem; }

/* ===== Buttons ===== */
.ui90-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 36px; padding: 0 1.2rem; border: 0; border-radius: 999px;
  font-size: 1.35rem; font-weight: 700; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
  color: #fff;
}
.ui90-btn:active { transform: scale(0.96); }
.ui90-btn-primary { background: linear-gradient(135deg, var(--ui90-pink), var(--ui90-maroon)); box-shadow: 0 4px 12px rgba(255, 20, 147, .4); }
.ui90-btn-ghost { background: transparent; border: 1px solid var(--ui90-pink-soft); color: var(--ui90-pink-soft); }
.ui90-btn-gold { background: linear-gradient(135deg, var(--ui90-gold), #ffb347); color: #3a1a22; }
.ui90-btn-block { width: 100%; min-height: 44px; font-size: 1.5rem; }
.ui90-link-text { color: var(--ui90-pink); font-weight: 700; border-bottom: 1px dashed rgba(255, 20, 147, .5); padding-bottom: 1px; }
.ui90-link-text:hover { color: var(--ui90-pink-soft); }

/* ===== Expandable nav menu ===== */
.ui90-menu-toggle {
  background: transparent; border: 0; color: var(--ui90-pink-soft);
  font-size: 2rem; cursor: pointer; padding: .4rem; display: inline-flex;
}
.ui90-nav-menu {
  display: none; max-width: var(--ui90-max); margin: 0 auto;
  padding: 1rem; background: var(--ui90-bg-card);
  border-top: 1px solid var(--ui90-line);
  grid-template-columns: 1fr 1fr; gap: .6rem;
}
.ui90-nav-menu.open { display: grid; }
.ui90-nav-menu a {
  display: flex; align-items: center; gap: .6rem;
  background: rgba(255, 255, 255, 0.04); padding: .7rem .9rem;
  border-radius: var(--ui90-radius-sm); color: var(--ui90-text); font-size: 1.3rem;
  border: 1px solid transparent;
}
.ui90-nav-menu a:hover { border-color: var(--ui90-pink); color: var(--ui90-pink-soft); }
.ui90-nav-menu .material-icons-outlined, .ui90-nav-menu .bi { color: var(--ui90-pink); font-size: 1.7rem; }

/* ===== Hero / Carousel ===== */
.ui90-carousel {
  position: relative; border-radius: var(--ui90-radius); overflow: hidden;
  box-shadow: var(--ui90-shadow); margin-bottom: .4rem;
}
.ui90-slides { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
.ui90-slides::-webkit-scrollbar { display: none; }
.ui90-slide { min-width: 100%; scroll-snap-align: center; position: relative; cursor: pointer; }
.ui90-slide img { width: 100%; height: 180px; object-fit: cover; }
.ui90-slide-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1rem 1.2rem; background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  font-size: 1.3rem; color: #fff;
}
.ui90-slide-cap b { color: var(--ui90-pink-soft); }
.ui90-dots { display: flex; justify-content: center; gap: .5rem; padding: .6rem 0; }
.ui90-dots span {
  width: 7px; height: 7px; border-radius: 50%;
  background: rgba(255, 255, 255, .25); transition: all .2s;
}
.ui90-dots span.active { background: var(--ui90-pink); width: 18px; border-radius: 4px; }

/* ===== H1 / Intro ===== */
.ui90-hero-title { font-size: 2.4rem; line-height: 1.25; margin: 1.2rem 0 .8rem; color: var(--ui90-text); }
.ui90-hero-title span { color: var(--ui90-pink); }
.ui90-lead { color: var(--ui90-text-muted); font-size: 1.4rem; }
.ui90-hero-cta { display: flex; gap: .8rem; margin-top: 1.2rem; flex-wrap: wrap; }

/* ===== Game grid ===== */
.ui90-game-block { margin-bottom: 1.6rem; }
.ui90-cat-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: .9rem;
}
.ui90-cat-head h2 {
  font-size: 1.7rem; color: var(--ui90-text);
  display: flex; align-items: center; gap: .6rem;
}
.ui90-cat-tag {
  font-size: 1.1rem; padding: .25rem .8rem; border-radius: 999px;
  background: rgba(255, 20, 147, .15); color: var(--ui90-pink-soft); border: 1px solid var(--ui90-line);
}
.ui90-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem;
}
.ui90-card {
  background: var(--ui90-bg-card); border-radius: var(--ui90-radius-sm);
  overflow: hidden; border: 1px solid var(--ui90-line);
  transition: transform .15s ease, box-shadow .15s ease; cursor: pointer;
  display: flex; flex-direction: column;
}
.ui90-card:active { transform: scale(0.97); box-shadow: 0 6px 16px rgba(255, 20, 147, .35); }
.ui90-card-img { position: relative; aspect-ratio: 1 / 1; background: #000; }
.ui90-card-img img { width: 100%; height: 100%; object-fit: cover; }
.ui90-card-hot {
  position: absolute; top: 4px; left: 4px;
  background: var(--ui90-pink); color: #fff; font-size: 1rem;
  padding: 1px 6px; border-radius: 6px; font-weight: 700;
}
.ui90-card-name {
  font-size: 1.2rem; padding: .55rem .5rem; text-align: center;
  color: var(--ui90-text); line-height: 1.25; min-height: 34px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===== Feature / module blocks ===== */
.ui90-panel {
  background: var(--ui90-bg-card); border-radius: var(--ui90-radius);
  padding: 1.4rem; border: 1px solid var(--ui90-line); margin-bottom: 1.2rem;
}
.ui90-panel h2, .ui90-panel h3 { color: var(--ui90-text); margin-bottom: .8rem; }
.ui90-panel p { color: var(--ui90-text-muted); margin-bottom: .8rem; font-size: 1.4rem; }
.ui90-panel ul.ui90-list li {
  position: relative; padding-left: 1.8rem; margin-bottom: .6rem; color: var(--ui90-text-muted);
}
.ui90-panel ul.ui90-list li::before {
  content: "\f005"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  position: absolute; left: 0; top: 0; color: var(--ui90-pink); font-size: 1.1rem;
}
.ui90-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .6rem; }
.ui90-chip {
  font-size: 1.2rem; padding: .35rem .9rem; border-radius: 999px;
  background: rgba(255, 179, 186, .12); color: var(--ui90-pink-soft);
  border: 1px solid var(--ui90-line);
}

/* Testimonials */
.ui90-testi { display: grid; gap: .8rem; }
.ui90-testi-item {
  background: rgba(255, 255, 255, .04); padding: 1rem; border-radius: var(--ui90-radius-sm);
  border-left: 3px solid var(--ui90-pink);
}
.ui90-testi-item .ui90-stars { color: var(--ui90-gold); font-size: 1.2rem; margin-bottom: .3rem; }
.ui90-testi-item p { font-size: 1.3rem; color: var(--ui90-text-muted); }
.ui90-testi-item b { color: var(--ui90-pink-soft); display: block; margin-top: .3rem; font-size: 1.2rem; }

/* Payment / app rows */
.ui90-pay, .ui90-app-row { display: flex; flex-wrap: wrap; gap: .6rem; }
.ui90-pay span, .ui90-app-row span {
  background: rgba(255, 255, 255, .06); padding: .5rem .9rem; border-radius: 8px;
  font-size: 1.2rem; color: var(--ui90-text); display: inline-flex; align-items: center; gap: .4rem;
  border: 1px solid var(--ui90-line);
}
.ui90-pay i, .ui90-app-row i { color: var(--ui90-pink); }

/* Winners */
.ui90-winners { display: grid; gap: .5rem; }
.ui90-winner {
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(255, 255, 255, .04); padding: .6rem .9rem; border-radius: 8px; font-size: 1.25rem;
}
.ui90-winner b { color: var(--ui90-gold); }

/* CTA band */
.ui90-cta-band {
  background: linear-gradient(135deg, var(--ui90-maroon), var(--ui90-pink));
  border-radius: var(--ui90-radius); padding: 1.6rem; text-align: center; margin: 1.4rem 0;
}
.ui90-cta-band h3 { color: #fff; font-size: 1.8rem; margin-bottom: .6rem; }
.ui90-cta-band p { color: rgba(255, 255, 255, .9); font-size: 1.3rem; margin-bottom: 1rem; }

/* FAQ */
.ui90-faq details {
  background: rgba(255, 255, 255, .04); border: 1px solid var(--ui90-line);
  border-radius: var(--ui90-radius-sm); padding: 1rem; margin-bottom: .6rem;
}
.ui90-faq summary { font-weight: 700; color: var(--ui90-text); cursor: pointer; font-size: 1.35rem; }
.ui90-faq details[open] summary { color: var(--ui90-pink-soft); }
.ui90-faq p { margin-top: .6rem; color: var(--ui90-text-muted); font-size: 1.3rem; }

/* ===== Footer ===== */
.ui90-footer {
  background: var(--ui90-bg-deep); border-top: 1px solid var(--ui90-line);
  padding: 2rem 0 calc(var(--ui90-bottomnav-h) + 1.5rem);
}
.ui90-footer .ui90-container { display: grid; gap: 1.2rem; }
.ui90-footer h4 { color: var(--ui90-pink-soft); font-size: 1.4rem; margin-bottom: .6rem; }
.ui90-footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.ui90-footer-links a { color: var(--ui90-text-muted); font-size: 1.25rem; }
.ui90-footer-links a:hover { color: var(--ui90-pink); }
.ui90-footer-brand { font-size: 1.3rem; color: var(--ui90-text-muted); }
.ui90-footer-copy { font-size: 1.15rem; color: var(--ui90-text-muted); border-top: 1px solid var(--ui90-line); padding-top: 1rem; text-align: center; }

/* ===== Bottom nav (mobile) ===== */
.ui90-bottomnav {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  height: var(--ui90-bottomnav-h);
  background: rgba(29, 42, 53, 0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--ui90-line);
  display: flex; justify-content: space-around; align-items: stretch;
  max-width: var(--ui90-max); margin: 0 auto;
}
.ui90-bottomnav button, .ui90-bottomnav a {
  flex: 1; min-width: 60px; min-height: 60px;
  background: transparent; border: 0; color: var(--ui90-text-muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-size: 1.05rem; text-decoration: none; cursor: pointer;
  transition: color .15s ease, transform .15s ease; position: relative;
}
.ui90-bottomnav button:active, .ui90-bottomnav a:active { transform: scale(0.92); }
.ui90-bottomnav .fas,
.ui90-bottomnav .material-icons-outlined,
.ui90-bottomnav .ion-icon,
.ui90-bottomnav ion-icon { font-size: 22px; }
.ui90-bottomnav .active { color: var(--ui90-pink); }
.ui90-bottomnav .active::after {
  content: ""; position: absolute; top: 0; width: 26px; height: 3px;
  background: var(--ui90-pink); border-radius: 0 0 4px 4px;
}
.ui90-bottomnav .ui90-bn-promo { color: var(--ui90-gold); }

/* ===== Desktop ===== */
@media (min-width: 769px) {
  body { background: linear-gradient(160deg, #1d2a35, #14202a); }
  .ui90-container { max-width: 960px; }
  .ui90-grid { grid-template-columns: repeat(6, 1fr); }
  .ui90-bottomnav { display: none; }
  .ui90-wrapper { padding-bottom: 2rem; }
  .ui90-footer { padding-bottom: 2rem; }
}
@media (max-width: 768px) {
  main.ui90-main { padding-bottom: calc(var(--ui90-bottomnav-h) + 1.2rem); }
}