/* =========================================================
 * 7p771.cfd - Core Stylesheet (css/theme-d133.css)
 * All custom classes use the dynamic prefix "ui13-".
 * Mobile-first design, root font-size 62.5% for rem units.
 * Palette: #FFEB3B | #40E0D0 | #87CEEB | #1C2833
 * ========================================================= */

:root {
  --ui13-yellow:   #FFEB3B;   /* primary accent */
  --ui13-teal:     #40E0D0;   /* secondary accent */
  --ui13-sky:      #87CEEB;   /* tertiary / info  */
  --ui13-bg:       #1C2833;   /* deep background  */
  --ui13-bg-2:     #14202b;   /* darker surface   */
  --ui13-bg-3:     #0f1923;   /* deepest surface  */
  --ui13-text:     #EAF6FF;   /* primary text     */
  --ui13-muted:    #9DB2C3;   /* secondary text   */
  --ui13-primary:  var(--ui13-yellow);
  --ui13-card:     #1E2C39;
  --ui13-border:   rgba(135, 206, 235, 0.16);
  --ui13-shadow:   0 8px 24px rgba(0, 0, 0, 0.42);
  --ui13-radius:   14px;
  --ui13-radius-sm:10px;
  --ui13-radius-lg:22px;
  --ui13-header-h: 60px;
  --ui13-bottom-h: 62px;
  --ui13-max:      430px;
  --ui13-ease:     cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset & base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

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

body {
  font-family: "Hind Siliguri", "Noto Sans Bengali", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--ui13-bg);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(64, 224, 208, 0.18), transparent 42%),
    radial-gradient(circle at 92% 4%, rgba(255, 235, 59, 0.12), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(135, 206, 235, 0.10), transparent 50%);
  color: var(--ui13-text);
  line-height: 1.5rem;
  font-size: 1.5rem;
  overflow-x: hidden;
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--ui13-teal); text-decoration: none; }
a:focus, button:focus { outline: 2px solid var(--ui13-sky); outline-offset: 2px; }

h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; color: var(--ui13-text); }
h1 { font-size: 2.6rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.9rem; }
p  { margin-bottom: 1.2rem; }

.ui13-container { width: 100%; max-width: var(--ui13-max); margin: 0 auto; padding: 0 1.4rem; position: relative; }
.ui13-wrapper   { width: 100%; max-width: var(--ui13-max); margin: 0 auto; }

/* ---------- Header ---------- */
.ui13-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--ui13-header-h);
  background: rgba(20, 32, 43, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ui13-border);
  transition: box-shadow .3s var(--ui13-ease), background .3s var(--ui13-ease);
}
.ui13-header-scrolled { box-shadow: 0 6px 22px rgba(0,0,0,0.55); background: rgba(15, 25, 35, 0.98); }
.ui13-header-inner {
  max-width: var(--ui13-max); height: 100%; margin: 0 auto;
  padding: 0 1.2rem;
  display: flex; align-items: center; justify-content: space-between; gap: 0.8rem;
}
.ui13-logo { display: flex; align-items: center; gap: 0.8rem; min-width: 0; }
.ui13-logo img { width: 32px; height: 32px; border-radius: 8px; }
.ui13-logo-text { font-size: 2.0rem; font-weight: 800; color: var(--ui13-yellow); letter-spacing: 0.5px; white-space: nowrap; }
.ui13-logo-text span { color: var(--ui13-teal); }

.ui13-header-actions { display: flex; align-items: center; gap: 0.6rem; }
.ui13-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-size: 1.4rem; font-weight: 700; cursor: pointer;
  border: none; border-radius: 999px; padding: 0.7rem 1.3rem;
  min-height: 38px; transition: transform .15s var(--ui13-ease), box-shadow .2s var(--ui13-ease), opacity .2s;
  font-family: inherit;
}
.ui13-btn:active { transform: scale(0.95); }
.ui13-btn-register {
  background: linear-gradient(135deg, var(--ui13-yellow), #ffd000);
  color: var(--ui13-bg-3);
  box-shadow: 0 4px 14px rgba(255, 235, 59, 0.35);
}
.ui13-btn-login {
  background: linear-gradient(135deg, var(--ui13-teal), #2bb6ad);
  color: var(--ui13-bg-3);
  box-shadow: 0 4px 14px rgba(64, 224, 208, 0.32);
}
.ui13-menu-toggle {
  background: transparent; border: 1px solid var(--ui13-border);
  color: var(--ui13-text); width: 40px; height: 40px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center; font-size: 2.0rem; cursor: pointer;
}

/* ---------- Mobile slide-down menu ---------- */
.ui13-mobile-menu {
  position: fixed; top: var(--ui13-header-h); left: 0; right: 0; z-index: 9999;
  background: var(--ui13-bg-2);
  border-bottom: 1px solid var(--ui13-border);
  transform: translateY(-130%); transition: transform .35s var(--ui13-ease);
  padding: 1.4rem; max-height: calc(100vh - var(--ui13-header-h)); overflow-y: auto;
  box-shadow: var(--ui13-shadow);
}
.ui13-menu-open { transform: translateY(0); }
.ui13-menu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.ui13-menu-item {
  display: flex; align-items: center; gap: 1rem;
  background: var(--ui13-card); border: 1px solid var(--ui13-border);
  border-radius: var(--ui13-radius-sm); padding: 1.2rem; color: var(--ui13-text);
  font-size: 1.5rem; font-weight: 600; cursor: pointer;
  transition: background .2s, transform .15s;
}
.ui13-menu-item:active { transform: scale(0.97); background: #243648; }
.ui13-menu-item i, .ui13-menu-item span.material-icons-outlined, .ui13-menu-item ion-icon, .ui13-menu-item bi { font-size: 22px; color: var(--ui13-yellow); }
.ui13-menu-cta {
  margin-top: 1.4rem; display: block; text-align: center;
  background: linear-gradient(135deg, var(--ui13-yellow), var(--ui13-teal));
  color: var(--ui13-bg-3); font-weight: 800; padding: 1.2rem; border-radius: var(--ui13-radius-sm);
  font-size: 1.6rem; cursor: pointer; border: none; width: 100%;
}

body.ui13-no-scroll { overflow: hidden; }

/* ---------- Main / sections ---------- */
.ui13-main { padding-top: calc(var(--ui13-header-h) + 1rem); padding-bottom: calc(var(--ui13-bottom-h) + 2rem); }
.ui13-section { padding: 2.4rem 0; }
.ui13-section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.4rem; }
.ui13-section-title { font-size: 2.1rem; font-weight: 800; color: var(--ui13-yellow); display: flex; align-items: center; gap: 0.8rem; }
.ui13-section-title i, .ui13-section-title .material-icons-outlined { color: var(--ui13-teal); font-size: 24px; }
.ui13-section-more { color: var(--ui13-sky); font-size: 1.3rem; font-weight: 600; }

/* ---------- Hero / Carousel ---------- */
.ui13-carousel {
  position: relative; border-radius: var(--ui13-radius-lg); overflow: hidden;
  box-shadow: var(--ui13-shadow); margin-bottom: 1.4rem;
}
.ui13-slide {
  position: relative; display: none; cursor: pointer;
  border-radius: var(--ui13-radius-lg); overflow: hidden;
}
.ui13-slide-active { display: block; animation: ui13-fade 0.7s ease; }
.ui13-slide img { width: 100%; height: 180px; object-fit: cover; }
.ui13-slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,25,35,0.92) 0%, rgba(15,25,35,0.18) 55%, transparent 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 1.6rem; color: var(--ui13-text);
}
.ui13-slide-title { font-size: 2.2rem; font-weight: 800; color: var(--ui13-yellow); margin-bottom: 0.4rem; }
.ui13-slide-sub { font-size: 1.4rem; color: var(--ui13-text); margin-bottom: 0.8rem; }
.ui13-slide-cta {
  align-self: flex-start; background: var(--ui13-yellow); color: var(--ui13-bg-3);
  font-weight: 800; padding: 0.7rem 1.6rem; border-radius: 999px; font-size: 1.3rem;
  box-shadow: 0 4px 14px rgba(255,235,59,0.45);
}
.ui13-carousel-dots {
  position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 6px; z-index: 3;
}
.ui13-carousel-dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.4); transition: background .2s, width .2s; cursor: pointer; }
.ui13-dot-active { background: var(--ui13-yellow); width: 22px; border-radius: 999px; }

@keyframes ui13-fade { from { opacity: 0.2; } to { opacity: 1; } }

/* ---------- Feature / value bar ---------- */
.ui13-feature-bar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.8rem; margin-bottom: 1.4rem; }
.ui13-feature {
  background: var(--ui13-card); border: 1px solid var(--ui13-border);
  border-radius: var(--ui13-radius-sm); padding: 1rem 0.4rem; text-align: center;
}
.ui13-feature i, .ui13-feature .material-icons-outlined { font-size: 22px; color: var(--ui13-teal); }
.ui13-feature span { display: block; font-size: 1.2rem; color: var(--ui13-muted); margin-top: 0.4rem; }

/* ---------- Game grid ---------- */
.ui13-category-tag {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: linear-gradient(135deg, rgba(64,224,208,0.18), rgba(255,235,59,0.10));
  border: 1px solid var(--ui13-border); border-radius: 999px;
  padding: 0.5rem 1.2rem; font-size: 1.4rem; font-weight: 700; color: var(--ui13-yellow);
  margin-bottom: 1rem;
}
.ui13-category-tag i, .ui13-category-tag ion-icon { color: var(--ui13-teal); font-size: 18px; }

.ui13-game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.6rem; }
.ui13-game-card {
  background: var(--ui13-card); border: 1px solid var(--ui13-border);
  border-radius: var(--ui13-radius); overflow: hidden; cursor: pointer;
  transition: transform .15s var(--ui13-ease), box-shadow .2s, border-color .2s;
  position: relative;
}
.ui13-game-card:hover { border-color: var(--ui13-teal); box-shadow: 0 6px 18px rgba(64,224,208,0.18); }
.ui13-game-card:active { transform: scale(0.96); }
.ui13-game-thumb { width: 100%; aspect-ratio: 1 / 1; background: var(--ui13-bg-3); object-fit: cover; }
.ui13-game-name {
  font-size: 1.2rem; padding: 0.6rem 0.5rem; text-align: center; color: var(--ui13-text);
  font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  line-height: 1.3;
}
.ui13-game-badge {
  position: absolute; top: 6px; left: 6px;
  background: var(--ui13-yellow); color: var(--ui13-bg-3);
  font-size: 0.95rem; font-weight: 800; padding: 2px 7px; border-radius: 6px;
}
.ui13-game-badge.hot { background: #ff5e62; color: #fff; }

/* ---------- Info / content cards ---------- */
.ui13-card {
  background: var(--ui13-card); border: 1px solid var(--ui13-border);
  border-radius: var(--ui13-radius); padding: 1.6rem; margin-bottom: 1.4rem;
  box-shadow: var(--ui13-shadow);
}
.ui13-card h3 { color: var(--ui13-yellow); margin-bottom: 0.8rem; }
.ui13-card p { color: var(--ui13-text); font-size: 1.45rem; }
.ui13-card ul { list-style: none; margin-top: 0.6rem; }
.ui13-card ul li { position: relative; padding-left: 2rem; margin-bottom: 0.6rem; font-size: 1.4rem; color: var(--ui13-text); }
.ui13-card ul li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--ui13-teal); position: absolute; left: 0; top: 0; }

.ui13-promo-text { color: var(--ui13-yellow); font-weight: 800; cursor: pointer; }
.ui13-promo-text:hover { text-decoration: underline; }

/* ---------- Stats grid (RTP/winners) ---------- */
.ui13-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.ui13-stat-box { background: var(--ui13-bg-2); border: 1px solid var(--ui13-border); border-radius: var(--ui13-radius-sm); padding: 1.2rem; text-align: center; }
.ui13-stat-num { font-size: 2.2rem; font-weight: 800; color: var(--ui13-yellow); }
.ui13-stat-label { font-size: 1.2rem; color: var(--ui13-muted); margin-top: 0.3rem; }

/* ---------- Testimonial ---------- */
.ui13-testimonials { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.ui13-testimonial { background: var(--ui13-bg-2); border-left: 3px solid var(--ui13-teal); border-radius: var(--ui13-radius-sm); padding: 1.2rem; }
.ui13-testimonial p { font-size: 1.4rem; font-style: italic; color: var(--ui13-text); }
.ui13-testimonial-author { margin-top: 0.6rem; font-size: 1.3rem; color: var(--ui13-yellow); font-weight: 700; }

/* ---------- Payment chips ---------- */
.ui13-pay-chips { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.ui13-pay-chip {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--ui13-bg-2); border: 1px solid var(--ui13-border);
  border-radius: 999px; padding: 0.6rem 1.2rem; font-size: 1.3rem; color: var(--ui13-text);
}
.ui13-pay-chip i { color: var(--ui13-teal); }

/* ---------- CTA banner ---------- */
.ui13-cta-banner {
  background: linear-gradient(135deg, var(--ui13-yellow), var(--ui13-teal));
  border-radius: var(--ui13-radius); padding: 1.6rem; text-align: center; color: var(--ui13-bg-3);
  margin: 1.6rem 0; box-shadow: var(--ui13-shadow);
}
.ui13-cta-banner h3 { color: var(--ui13-bg-3); margin-bottom: 0.4rem; font-size: 2rem; }
.ui13-cta-banner p { color: var(--ui13-bg-3); margin-bottom: 1rem; font-weight: 600; }
.ui13-cta-banner .ui13-btn { background: var(--ui13-bg-3); color: var(--ui13-yellow); }

/* ---------- Footer ---------- */
.ui13-footer { background: var(--ui13-bg-3); border-top: 1px solid var(--ui13-border); padding: 2.4rem 0 1.4rem; }
.ui13-footer-brand { font-size: 2rem; font-weight: 800; color: var(--ui13-yellow); margin-bottom: 0.6rem; }
.ui13-footer-brand span { color: var(--ui13-teal); }
.ui13-footer-desc { font-size: 1.35rem; color: var(--ui13-muted); margin-bottom: 1.4rem; }
.ui13-footer-links { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-bottom: 1.4rem; }
.ui13-footer-link {
  background: var(--ui13-card); border: 1px solid var(--ui13-border);
  border-radius: 999px; padding: 0.5rem 1rem; font-size: 1.25rem; color: var(--ui13-text);
  cursor: pointer; transition: background .2s, color .2s;
}
.ui13-footer-link.promo { background: var(--ui13-yellow); color: var(--ui13-bg-3); font-weight: 700; border: none; }
.ui13-footer-copy { font-size: 1.2rem; color: var(--ui13-muted); text-align: center; border-top: 1px solid var(--ui13-border); padding-top: 1.2rem; }

/* ---------- Bottom navigation ---------- */
.ui13-bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000;
  height: var(--ui13-bottom-h);
  background: linear-gradient(180deg, rgba(20,32,43,0.98), rgba(15,25,35,1));
  border-top: 1px solid var(--ui13-border);
  display: flex; justify-content: space-around; align-items: stretch;
  box-shadow: 0 -4px 18px rgba(0,0,0,0.45);
}
.ui13-bottom-nav-btn {
  flex: 1; min-width: 60px; min-height: 60px;
  background: transparent; border: none; color: var(--ui13-muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-family: inherit; font-size: 1.1rem; cursor: pointer;
  transition: color .2s var(--ui13-ease), transform .15s var(--ui13-ease);
  position: relative;
}
.ui13-bottom-nav-btn i,
.ui13-bottom-nav-btn .material-icons-outlined,
.ui13-bottom-nav-btn ion-icon {
  font-size: 22px; transition: transform .2s var(--ui13-ease);
}
.ui13-bottom-nav-btn:active { transform: scale(0.9); }
.ui13-bottom-nav-btn:hover { color: var(--ui13-teal); }
.ui13-bottom-nav-btn.ui13-bottom-nav-active { color: var(--ui13-yellow); }
.ui13-bottom-nav-btn.ui13-bottom-nav-active i,
.ui13-bottom-nav-btn.ui13-bottom-nav-active .material-icons-outlined,
.ui13-bottom-nav-btn.ui13-bottom-nav-active ion-icon { transform: translateY(-2px) scale(1.12); }
.ui13-bottom-nav-promo { color: var(--ui13-yellow); }
.ui13-bottom-nav-promo::after {
  content: ''; position: absolute; top: 6px; right: 18px;
  width: 7px; height: 7px; background: #ff5e62; border-radius: 50%;
  box-shadow: 0 0 0 2px var(--ui13-bg-3);
}

/* ---------- Back-to-top ---------- */
.ui13-back-top {
  position: fixed; right: 14px; bottom: calc(var(--ui13-bottom-h) + 12px);
  width: 44px; height: 44px; border-radius: 50%; z-index: 999;
  background: var(--ui13-teal); color: var(--ui13-bg-3); border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 20px;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .3s, visibility .3s, transform .3s;
  box-shadow: 0 4px 14px rgba(64,224,208,0.4);
}
.ui13-back-top-show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Reveal animation ---------- */
.ui13-reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ui13-ease), transform .6s var(--ui13-ease); }
.ui13-revealed { opacity: 1; transform: translateY(0); }

/* ---------- Utility ---------- */
.ui13-hidden { display: none !important; }
.ui13-text-center { text-align: center; }
.ui13-mt-1 { margin-top: 1rem; }
.ui13-mb-1 { margin-bottom: 1rem; }

/* ---------- Desktop: hide bottom nav, widen container ---------- */
@media (min-width: 769px) {
  .ui13-bottom-nav { display: none; }
  .ui13-back-top { bottom: 24px; }
  :root { --ui13-max: 760px; }
  body { background-attachment: fixed; }
  .ui13-game-grid { grid-template-columns: repeat(4, 1fr); }
  .ui13-testimonials { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Small phone tuning ---------- */
@media (max-width: 360px) {
  .ui13-game-grid { grid-template-columns: repeat(2, 1fr); }
  .ui13-logo-text { font-size: 1.7rem; }
  .ui13-btn { padding: 0.6rem 1rem; font-size: 1.3rem; }
}