/* 990k9 design.css - Mobile-first Vietnamese casino portal
 * All classes use v2a0- prefix for namespace isolation.
 * English comments only. Root font 62.5% for rem scaling.
 */

:root {
  --v2a0-primary: #8470FF;
  --v2a0-mint: #B2DFDB;
  --v2a0-cyan: #AFEEEE;
  --v2a0-bg: #1B263B;
  --v2a0-bg-deep: #131C2E;
  --v2a0-bg-card: #243049;
  --v2a0-text: #AFEEEE;
  --v2a0-text-soft: #B2DFDB;
  --v2a0-text-muted: #8FA2C7;
  --v2a0-accent: #FFC857;
  --v2a0-accent-2: #FF6B9D;
  --v2a0-radius: 1.2rem;
  --v2a0-radius-sm: 0.8rem;
  --v2a0-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
  --v2a0-header-h: 5.6rem;
  --v2a0-bottomnav-h: 6.2rem;
}

* { 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, "Helvetica Neue", Arial, sans-serif;
  background: var(--v2a0-bg-deep);
  color: var(--v2a0-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(--v2a0-cyan); text-decoration: none; }

/* ---------- Layout ---------- */
.v2a0-wrapper {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 1.2rem;
}

main.v2a0-main {
  padding-top: calc(var(--v2a0-header-h) + 0.8rem);
  padding-bottom: calc(var(--v2a0-bottomnav-h) + 1.6rem);
  min-height: 100vh;
}

/* ---------- Header ---------- */
.v2a0-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--v2a0-bg) 0%, var(--v2a0-bg-deep) 100%);
  border-bottom: 1px solid rgba(132, 112, 255, 0.35);
  box-shadow: var(--v2a0-shadow);
}

.v2a0-header-inner {
  max-width: 430px;
  margin: 0 auto;
  height: var(--v2a0-header-h);
  padding: 0 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.v2a0-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.v2a0-brand img { width: 2.8rem; height: 2.8rem; border-radius: 0.6rem; }

.v2a0-brand-name {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--v2a0-cyan);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.v2a0-header-actions { display: flex; align-items: center; gap: 0.5rem; }

.v2a0-menu-btn {
  background: transparent;
  border: 1px solid rgba(175, 238, 238, 0.25);
  color: var(--v2a0-text);
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  cursor: pointer;
}

.v2a0-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0 1.2rem;
  height: 3.6rem;
  border-radius: 2rem;
  font-size: 1.3rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s;
  white-space: nowrap;
}

.v2a0-btn:active { transform: scale(0.96); }

.v2a0-btn--login {
  background: transparent;
  border: 1px solid var(--v2a0-cyan);
  color: var(--v2a0-cyan);
}

.v2a0-btn--register {
  background: linear-gradient(135deg, var(--v2a0-primary), #6a55e0);
  color: #fff;
  box-shadow: 0 3px 10px rgba(132, 112, 255, 0.45);
}

/* ---------- Expandable nav menu ---------- */
.v2a0-nav-menu {
  position: fixed;
  top: var(--v2a0-header-h);
  left: 0; right: 0;
  z-index: 9999;
  background: var(--v2a0-bg);
  border-bottom: 1px solid rgba(132, 112, 255, 0.3);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}

.v2a0-nav-menu--open { max-height: 32rem; }

.v2a0-nav-menu ul {
  list-style: none;
  max-width: 430px;
  margin: 0 auto;
  padding: 0.8rem 1.2rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.v2a0-nav-menu a {
  display: block;
  padding: 1rem;
  font-size: 1.25rem;
  color: var(--v2a0-text);
  background: var(--v2a0-bg-card);
  border-radius: var(--v2a0-radius-sm);
  border: 1px solid rgba(175, 238, 238, 0.12);
}

.v2a0-nav-menu a:active { background: var(--v2a0-primary); color: #fff; }

/* ---------- Hero / Carousel ---------- */
.v2a0-hero {
  position: relative;
  border-radius: var(--v2a0-radius);
  overflow: hidden;
  box-shadow: var(--v2a0-shadow);
  margin-bottom: 1.6rem;
}

.v2a0-slide {
  display: none;
  position: relative;
}

.v2a0-slide--active { display: block; }

.v2a0-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.v2a0-slide-cap {
  position: absolute;
  left: 1rem; right: 1rem; bottom: 1rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  padding: 1.2rem 0.6rem 0.4rem;
  border-radius: 0.6rem;
}

.v2a0-slide-cap h2 { font-size: 1.6rem; color: var(--v2a0-accent); margin-bottom: 0.3rem; }
.v2a0-slide-cap p { font-size: 1.15rem; color: #fff; }

.v2a0-dots {
  position: absolute;
  bottom: 0.6rem; left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 0.4rem;
}

.v2a0-dot {
  width: 0.7rem; height: 0.7rem;
  border-radius: 50%;
  background: rgba(175, 238, 238, 0.4);
  cursor: pointer;
}

.v2a0-dot--active { background: var(--v2a0-accent); width: 1.8rem; border-radius: 0.4rem; }

/* ---------- Headings ---------- */
.v2a0-h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--v2a0-cyan);
  margin: 1.2rem 0 0.6rem;
  line-height: 1.25;
}

.v2a0-h2 {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--v2a0-accent);
  margin: 2rem 0 0.8rem;
  padding-left: 0.8rem;
  border-left: 0.4rem solid var(--v2a0-primary);
}

.v2a0-h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--v2a0-mint);
  margin: 1.4rem 0 0.6rem;
}

.v2a0-lead { color: var(--v2a0-text-soft); margin-bottom: 1rem; }

.v2a0-p { margin-bottom: 0.9rem; color: var(--v2a0-text); }

/* ---------- Filter chips ---------- */
.v2a0-chips {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  padding: 0.4rem 0 1rem;
  -webkit-overflow-scrolling: touch;
}

.v2a0-chip {
  flex: 0 0 auto;
  padding: 0.7rem 1.2rem;
  border-radius: 2rem;
  background: var(--v2a0-bg-card);
  color: var(--v2a0-text-soft);
  font-size: 1.2rem;
  font-weight: 600;
  border: 1px solid rgba(175, 238, 238, 0.15);
  cursor: pointer;
}

.v2a0-chip--active {
  background: var(--v2a0-primary);
  color: #fff;
  border-color: var(--v2a0-primary);
}

/* ---------- Game grid ---------- */
.v2a0-section {
  margin-bottom: 2rem;
  background: var(--v2a0-bg);
  border-radius: var(--v2a0-radius);
  padding: 1.4rem 1.2rem;
  box-shadow: var(--v2a0-shadow);
}

.v2a0-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.v2a0-game {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  background: var(--v2a0-bg-card);
  border-radius: var(--v2a0-radius-sm);
  padding: 0.5rem;
  border: 1px solid rgba(175, 238, 238, 0.08);
  transition: transform 0.15s, border-color 0.15s;
}

.v2a0-game:active { transform: scale(0.95); border-color: var(--v2a0-primary); }

.v2a0-game img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 0.6rem;
  margin-bottom: 0.4rem;
}

.v2a0-game-name {
  font-size: 1.05rem;
  color: var(--v2a0-text-soft);
  line-height: 1.2;
  min-height: 2.6rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Cards / generic ---------- */
.v2a0-card {
  background: var(--v2a0-bg-card);
  border-radius: var(--v2a0-radius-sm);
  padding: 1.2rem;
  margin-bottom: 1rem;
  border: 1px solid rgba(175, 238, 238, 0.1);
}

.v2a0-card-icon {
  font-size: 2rem;
  color: var(--v2a0-accent);
  margin-bottom: 0.5rem;
}

.v2a0-list { list-style: none; padding-left: 0; }
.v2a0-list li {
  padding: 0.5rem 0 0.5rem 1.8rem;
  position: relative;
  color: var(--v2a0-text-soft);
}
.v2a0-list li::before {
  content: "\f005";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  color: var(--v2a0-accent);
  font-size: 1rem;
  top: 0.7rem;
}

/* ---------- Promo CTA ---------- */
.v2a0-cta {
  background: linear-gradient(135deg, var(--v2a0-primary), var(--v2a0-accent-2));
  color: #fff;
  border-radius: var(--v2a0-radius);
  padding: 1.6rem 1.2rem;
  text-align: center;
  margin: 1.6rem 0;
  box-shadow: var(--v2a0-shadow);
}

.v2a0-cta h3 { color: #fff; margin-top: 0; font-size: 1.8rem; }
.v2a0-cta p { color: rgba(255,255,255,0.9); margin: 0.6rem 0 1rem; }

.v2a0-btn--cta {
  background: #fff;
  color: var(--v2a0-primary);
  font-size: 1.4rem;
  padding: 0 1.8rem;
  height: 4rem;
}

.v2a0-link {
  color: var(--v2a0-accent);
  font-weight: 700;
  text-decoration: underline;
}

/* ---------- Testimonial ---------- */
.v2a0-testi {
  background: var(--v2a0-bg-card);
  border-radius: var(--v2a0-radius-sm);
  padding: 1rem;
  margin-bottom: 0.8rem;
  border-left: 0.3rem solid var(--v2a0-mint);
}

.v2a0-testi-name { font-weight: 700; color: var(--v2a0-accent); font-size: 1.2rem; }
.v2a0-testi-stars { color: var(--v2a0-accent); font-size: 1.1rem; margin: 0.2rem 0; }

/* ---------- Payment ---------- */
.v2a0-pay-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.v2a0-pay {
  flex: 1 1 calc(33% - 0.6rem);
  background: var(--v2a0-bg-card);
  border-radius: 0.6rem;
  padding: 0.8rem;
  text-align: center;
  font-size: 1.1rem;
  color: var(--v2a0-text-soft);
  border: 1px solid rgba(175, 238, 238, 0.12);
}
.v2a0-pay i { font-size: 1.6rem; color: var(--v2a0-mint); display: block; margin-bottom: 0.3rem; }

/* ---------- Winners ---------- */
.v2a0-winner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 0.8rem;
  background: var(--v2a0-bg-card);
  border-radius: 0.6rem;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}
.v2a0-winner span:first-child { color: var(--v2a0-text-soft); }
.v2a0-winner span:last-child { color: var(--v2a0-accent); font-weight: 700; }

/* ---------- Footer ---------- */
.v2a0-footer {
  background: var(--v2a0-bg);
  border-top: 1px solid rgba(132, 112, 255, 0.3);
  padding: 2rem 0 calc(var(--v2a0-bottomnav-h) + 1.6rem);
  margin-top: 2rem;
}

.v2a0-footer-inner { max-width: 430px; margin: 0 auto; padding: 0 1.2rem; }

.v2a0-footer h4 {
  color: var(--v2a0-accent);
  font-size: 1.3rem;
  margin: 1.2rem 0 0.6rem;
}

.v2a0-footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem 0.8rem;
  list-style: none;
  margin: 0.6rem 0;
}

.v2a0-footer-links a {
  font-size: 1.15rem;
  color: var(--v2a0-text-soft);
}

.v2a0-footer-links a:active { color: var(--v2a0-accent); }

.v2a0-footer-promos {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0;
}
.v2a0-footer-promos .v2a0-btn { flex: 1 1 calc(50% - 0.5rem); height: 3.4rem; font-size: 1.2rem; }

.v2a0-copyright {
  text-align: center;
  color: var(--v2a0-text-muted);
  font-size: 1.1rem;
  margin-top: 1.2rem;
  border-top: 1px solid rgba(175, 238, 238, 0.1);
  padding-top: 1rem;
}

/* ---------- Mobile bottom nav ---------- */
.v2a0-bottomnav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--v2a0-bottomnav-h);
  background: linear-gradient(180deg, var(--v2a0-bg) 0%, var(--v2a0-bg-deep) 100%);
  border-top: 1px solid rgba(132, 112, 255, 0.4);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -3px 14px rgba(0, 0, 0, 0.35);
}

.v2a0-bottomnav-btn {
  flex: 1;
  min-width: 60px;
  min-height: 60px;
  background: transparent;
  border: none;
  color: var(--v2a0-text-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: color 0.15s, transform 0.15s;
}

.v2a0-bottomnav-btn i,
.v2a0-bottomnav-btn .material-icons-outlined,
.v2a0-bottomnav-btn ion-icon {
  font-size: 2.2rem;
}

.v2a0-bottomnav-btn:active { transform: scale(0.9); color: var(--v2a0-accent); }

.v2a0-bottomnav-btn--active {
  color: var(--v2a0-accent);
}

.v2a0-bottomnav-btn--promo {
  color: #fff;
}
.v2a0-bottomnav-btn--promo i { color: var(--v2a0-accent); }

/* ---------- Helpers ---------- */
.v2a0-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.v2a0-pipe { color: var(--v2a0-text-muted); margin: 0 0.4rem; }
.v2a0-center { text-align: center; }
.v2a0-hide-desktop { display: block; }

/* ---------- Desktop ---------- */
@media (min-width: 769px) {
  .v2a0-bottomnav { display: none; }
  .v2a0-hide-desktop { display: none; }
  .v2a0-wrapper, .v2a0-header-inner, .v2a0-nav-menu ul, .v2a0-footer-inner {
    max-width: 760px;
  }
  main.v2a0-main { padding-bottom: 2rem; }
  .v2a0-footer { padding-bottom: 2rem; }
  .v2a0-grid { grid-template-columns: repeat(6, 1fr); }
}

/* Desktop bottom nav hidden, mobile bottom nav only on small screens */
@media (min-width: 769px) {
  body { padding-bottom: 0; }
}