/* DXG Stylesheet (ui6d- prefix) | Vietnamese mobile-first design */
/* Code comments in English */

:root {
  --ui6d-primary: #B8860B;
  --ui6d-accent: #FFA500;
  --ui6d-bg: #2D2D2D;
  --ui6d-bg2: #1f1f1f;
  --ui6d-muted: #5D5D5D;
  --ui6d-text: #C0C0C0;
  --ui6d-light: #F5F5F5;
  --ui6d-border: #3a3a3a;
}

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

html { font-size: 62.5%; -webkit-text-size-adjust: 100%; }

body {
  font-family: "Segoe UI", "Roboto", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background: var(--ui6d-bg2);
  color: var(--ui6d-light);
  line-height: 1.5rem;
  font-size: 1.4rem;
  -webkit-font-smoothing: antialiased;
  max-width: 430px;
  margin: 0 auto;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--ui6d-accent); text-decoration: none; }
a:hover { color: var(--ui6d-primary); }

img { max-width: 100%; display: block; }

.ui6d-container { width: 100%; padding: 0 1.2rem; }

/* Header */
.ui6d-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #1a1a1a 0%, #2D2D2D 100%);
  border-bottom: 2px solid var(--ui6d-primary);
  max-width: 430px;
  margin: 0 auto;
}
.ui6d-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  gap: 0.8rem;
}
.ui6d-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  min-width: 0;
}
.ui6d-logo img { width: 28px; height: 28px; border-radius: 6px; }
.ui6d-logo-text {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--ui6d-accent);
  letter-spacing: 0.5px;
}
.ui6d-logo-text span { color: var(--ui6d-primary); }
.ui6d-header-btns {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}
.ui6d-btn {
  border: none;
  padding: 0.8rem 1.4rem;
  font-size: 1.3rem;
  font-weight: 700;
  border-radius: 24px;
  cursor: pointer;
  min-height: 40px;
  transition: transform 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}
.ui6d-btn-login {
  background: transparent;
  color: var(--ui6d-text);
  border: 1.5px solid var(--ui6d-muted);
}
.ui6d-btn-register {
  background: linear-gradient(135deg, #FFA500, #B8860B);
  color: #1a1a1a;
  box-shadow: 0 2px 6px rgba(255, 165, 0, 0.4);
}
.ui6d-btn:hover { transform: scale(1.05); }
.ui6d-menu-toggle {
  background: transparent;
  border: none;
  color: var(--ui6d-accent);
  font-size: 2.4rem;
  cursor: pointer;
  padding: 0 0.4rem;
  min-width: 44px;
  min-height: 44px;
}
.ui6d-menu-toggle:focus { outline: 2px solid var(--ui6d-primary); }

/* Mobile Dropdown Menu */
.ui6d-mobile-menu {
  position: fixed;
  top: 60px; left: 0; right: 0;
  background: #1a1a1a;
  border-bottom: 2px solid var(--ui6d-primary);
  transform: translateY(-120%);
  transition: transform 0.3s ease;
  z-index: 9999;
  padding: 1rem 1.2rem 1.4rem;
  max-width: 430px;
  margin: 0 auto;
}
.ui6d-mobile-menu.ui6d-menu-open { transform: translateY(0); }
.ui6d-mobile-menu a {
  display: block;
  padding: 1rem 0.8rem;
  font-size: 1.35rem;
  color: var(--ui6d-light);
  border-bottom: 1px solid var(--ui6d-border);
  font-weight: 600;
}
.ui6d-mobile-menu a:hover { color: var(--ui6d-accent); }

/* Kit navbar offset */
main {
  padding-top: 64px;
  padding-bottom: 20px;
  max-width: 430px;
  margin: 0 auto;
}

/* Hero carousel */
.ui6d-hero {
  position: relative;
  margin: 1rem 0;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
}
.ui6d-slide {
  display: none;
  position: relative;
  cursor: pointer;
}
.ui6d-slide.ui6d-slide-active { display: block; }
.ui6d-slide img { width: 100%; height: 180px; object-fit: cover; }
.ui6d-slide-overlay {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  padding: 1.6rem 1.2rem 1rem;
}
.ui6d-slide-title {
  font-size: 1.6rem; font-weight: 800; color: var(--ui6d-accent);
  margin-bottom: 0.3rem;
}
.ui6d-slide-desc {
  font-size: 1.2rem; color: var(--ui6d-light);
}
.ui6d-carousel-dots {
  display: flex; justify-content: center; gap: 0.6rem;
  position: absolute; bottom: 0.6rem; left: 0; right: 0;
  z-index: 2;
}
.ui6d-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none; cursor: pointer;
}
.ui6d-dot.ui6d-dot-active { background: var(--ui6d-accent); }

/* Section title */
.ui6d-section {
  margin: 1.8rem 0;
  padding: 0 1.2rem;
}
.ui6d-section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.ui6d-section-title {
  font-size: 1.7rem; font-weight: 800;
  color: var(--ui6d-accent);
  border-left: 4px solid var(--ui6d-primary);
  padding-left: 0.8rem;
}
.ui6d-section-title small {
  display: block;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--ui6d-text);
  margin-top: 0.2rem;
}
.ui6d-more {
  font-size: 1.15rem; color: var(--ui6d-accent); font-weight: 600;
}

/* Filter tabs */
.ui6d-tabs {
  display: flex; flex-wrap: nowrap;
  overflow-x: auto;
  gap: 0.6rem;
  margin: 0 1.2rem 1rem;
  padding-bottom: 0.4rem;
  scrollbar-width: none;
}
.ui6d-tabs::-webkit-scrollbar { display: none; }
.ui6d-tab {
  flex: 0 0 auto;
  padding: 0.6rem 1.2rem;
  border-radius: 20px;
  background: #2a2a2a;
  color: var(--ui6d-text);
  font-size: 1.2rem;
  font-weight: 600;
  border: 1px solid var(--ui6d-border);
  cursor: pointer;
  white-space: nowrap;
}
.ui6d-tab-active {
  background: linear-gradient(135deg, #FFA500, #B8860B);
  color: #1a1a1a;
  border-color: var(--ui6d-primary);
}

/* Game grid */
.ui6d-game-section { margin: 0 1.2rem 1.6rem; }
.ui6d-game-cat-title {
  font-size: 1.45rem; font-weight: 700; color: var(--ui6d-primary);
  margin-bottom: 0.7rem; padding-top: 0.6rem;
  border-top: 1px solid var(--ui6d-border);
}
.ui6d-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}
.ui6d-game-card {
  background: #262626;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--ui6d-border);
  transition: transform 0.15s, box-shadow 0.15s;
}
.ui6d-game-card:hover {
  transform: translateY(-3px);
  border-color: var(--ui6d-accent);
  box-shadow: 0 4px 10px rgba(255, 165, 0, 0.25);
}
.ui6d-game-card img {
  width: 100%; height: 92px; object-fit: cover; background: #000;
}
.ui6d-game-card .ui6d-game-name {
  font-size: 1.05rem;
  color: var(--ui6d-light);
  padding: 0.4rem 0.4rem 0.5rem;
  text-align: center;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.2;
}

/* Feature card */
.ui6d-features {
  display: grid; grid-template-columns: 1fr; gap: 0.8rem;
  margin: 0 1.2rem 1.6rem;
}
.ui6d-feature-card {
  background: #262626; border: 1px solid var(--ui6d-border);
  border-left: 4px solid var(--ui6d-accent);
  border-radius: 8px;
  padding: 1rem 1.2rem;
}
.ui6d-feature-card h3 {
  font-size: 1.4rem; color: var(--ui6d-accent); font-weight: 700;
  margin-bottom: 0.4rem;
}
.ui6d-feature-card p {
  font-size: 1.2rem; color: var(--ui6d-text); line-height: 1.45;
}

/* FAQ */
.ui6d-faq { margin: 0 1.2rem 1.6rem; }
.ui6d-faq-item {
  background: #262626; border: 1px solid var(--ui6d-border);
  border-radius: 8px; padding: 0.9rem 1.1rem; margin-bottom: 0.7rem;
}
.ui6d-faq-q {
  font-size: 1.3rem; font-weight: 700; color: var(--ui6d-accent);
  margin-bottom: 0.4rem;
}
.ui6d-faq-a {
  font-size: 1.2rem; color: var(--ui6d-text); line-height: 1.45;
}

/* CTA bar */
.ui6d-cta {
  margin: 1.5rem 1.2rem;
  padding: 1.4rem 1.2rem;
  background: linear-gradient(135deg, #2D2D2D, #B8860B);
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--ui6d-accent);
}
.ui6d-cta h2 { font-size: 1.7rem; color: #fff; font-weight: 800; margin-bottom: 0.4rem; }
.ui6d-cta p { font-size: 1.2rem; color: #f0f0f0; margin-bottom: 0.9rem; }
.ui6d-cta .ui6d-btn { font-size: 1.4rem; padding: 1rem 2.2rem; }

/* Promo inline link */
.ui6d-promo-link {
  color: var(--ui6d-accent);
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
}

/* Testimonial */
.ui6d-testimonial {
  background: #262626;
  border: 1px solid var(--ui6d-border);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  margin: 0 1.2rem 0.7rem;
}
.ui6d-testimonial .ui6d-t-name {
  font-size: 1.25rem; font-weight: 700; color: var(--ui6d-primary); margin-bottom: 0.3rem;
}
.ui6d-testimonial .ui6d-t-text {
  font-size: 1.18rem; color: var(--ui6d-text); line-height: 1.45;
}

/* Payment methods */
.ui6d-pay-row {
  display: flex; flex-wrap: wrap; gap: 0.6rem;
  margin: 0 1.2rem 1.4rem;
}
.ui6d-pay-row .ui6d-pay {
  background: #262626; border: 1px solid var(--ui6d-border);
  padding: 0.7rem 1.1rem; border-radius: 6px;
  font-size: 1.15rem; color: var(--ui6d-text); font-weight: 600;
}

/* Footer */
.ui6d-footer {
  background: #1a1a1a;
  padding: 1.4rem 1.2rem 100px;
  margin-top: 1.5rem;
  border-top: 2px solid var(--ui6d-primary);
}
.ui6d-footer-grid { display: grid; grid-template-columns: 1fr; gap: 0.8rem; margin-bottom: 1rem; }
.ui6d-footer-grid h4 {
  font-size: 1.25rem; color: var(--ui6d-accent); margin-bottom: 0.5rem; font-weight: 700;
}
.ui6d-footer-grid a {
  display: block; font-size: 1.15rem; color: var(--ui6d-text);
  padding: 0.25rem 0;
}
.ui6d-promo-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem;
  margin: 0.8rem 0;
}
.ui6d-promo-grid .ui6d-btn {
  font-size: 1.15rem; padding: 0.7rem 0.6rem;
}
.ui6d-footer-copy {
  font-size: 1.1rem; color: var(--ui6d-muted); text-align: center;
  border-top: 1px solid var(--ui6d-border); padding-top: 1rem;
  line-height: 1.5;
}

/* Bottom nav */
.ui6d-bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 62px;
  background: linear-gradient(180deg, #2D2D2D, #1a1a1a);
  border-top: 2px solid var(--ui6d-primary);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  max-width: 430px;
  margin: 0 auto;
}
.ui6d-bnav-btn {
  flex: 1;
  min-width: 60px; min-height: 60px;
  background: transparent;
  border: none;
  color: var(--ui6d-text);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, color 0.2s;
  gap: 2px;
  padding: 4px 2px;
}
.ui6d-bnav-btn i, .ui6d-bnav-btn .material-icons {
  font-size: 22px;
}
.ui6d-bnav-btn span { font-size: 11px; font-weight: 600; }
.ui6d-bnav-btn:hover { transform: scale(1.12); color: var(--ui6d-accent); }
.ui6d-bnav-active { color: var(--ui6d-accent) !important; }
.ui6d-bnav-active span, .ui6d-bnav-active i { color: var(--ui6d-accent); }

/* Desktop hide bottom nav */
@media (min-width: 769px) {
  .ui6d-bottom-nav { display: none; }
  body, main, .ui6d-header, .ui6d-mobile-menu, .ui6d-footer { max-width: 430px; margin: 0 auto; }
}
@media (min-width: 431px) {
  body { max-width: 430px; }
}
@media (max-width: 768px) {
  main { padding-bottom: 80px; }
}