/* ============================================================
   KJC Game (kjcgame.click) - Theme CSS
   Prefix: ui50-  |  Palette: #FFF8DC #2C3E50 #FFCC33 #FFEBCD #FAFAFA
   ============================================================ */

:root {
  --ui50-bg: #2C3E50;
  --ui50-bg2: #1f2c3a;
  --ui50-cream: #FFF8DC;
  --ui50-vanilla: #FFEBCD;
  --ui50-gold: #FFCC33;
  --ui50-gold-dark: #e6b021;
  --ui50-light: #FAFAFA;
  --ui50-text: #f5f7fa;
  --ui50-muted: #b9c2cc;
  --ui50-border: rgba(255, 204, 51, 0.25);
  --ui50-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
  --ui50-radius: 14px;
}

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

html { font-size: 62.5%; scroll-behavior: smooth; }

body {
  font-family: "Be Vietnam Pro", "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--ui50-bg);
  color: var(--ui50-text);
  line-height: 1.5;
  font-size: 1.5rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--ui50-gold); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ---------- Container ---------- */
.ui50-wrap { width: 100%; max-width: 430px; margin: 0 auto; padding: 0 12px; }
.ui50-wrap-wide { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }

/* ---------- Header ---------- */
.ui50-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, #243444 0%, #1f2c3a 100%);
  border-bottom: 1px solid var(--ui50-border);
  box-shadow: var(--ui50-shadow);
  transition: background 0.3s ease;
}
.ui50-header.ui50-scrolled { background: #1a2531; }
.ui50-header-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px; gap: 10px;
}
.ui50-logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 1.7rem; color: var(--ui50-gold);
  letter-spacing: 0.3px;
}
.ui50-logo img { width: 30px; height: 30px; border-radius: 8px; }
.ui50-logo span { color: var(--ui50-cream); }

.ui50-header-actions { display: flex; align-items: center; gap: 8px; }

.ui50-btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: none; cursor: pointer;
  font-weight: 700; font-size: 1.35rem;
  padding: 9px 16px; border-radius: 30px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none;
}
.ui50-btn:hover { text-decoration: none; transform: translateY(-1px); }
.ui50-btn-register {
  background: linear-gradient(135deg, var(--ui50-gold) 0%, var(--ui50-gold-dark) 100%);
  color: #2C3E50;
  box-shadow: 0 3px 10px rgba(255, 204, 51, 0.35);
}
.ui50-btn-login {
  background: transparent;
  color: var(--ui50-cream);
  border: 1.5px solid var(--ui50-gold);
}

.ui50-menu-toggle {
  background: transparent; border: none; color: var(--ui50-gold);
  font-size: 2.4rem; cursor: pointer; padding: 4px 8px;
  display: inline-flex; align-items: center;
}

/* ---------- Desktop nav ---------- */
.ui50-desktop-nav { display: none; align-items: center; gap: 18px; }
.ui50-desktop-nav a { color: var(--ui50-cream); font-size: 1.4rem; font-weight: 500; }
.ui50-desktop-nav a:hover { color: var(--ui50-gold); }

/* ---------- Mobile menu ---------- */
.ui50-menu-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 9998;
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.ui50-menu-backdrop.ui50-open { opacity: 1; pointer-events: auto; }
.ui50-mobile-menu {
  position: fixed; top: 0; right: -280px;
  width: 270px; height: 100vh;
  background: var(--ui50-bg2);
  z-index: 9999;
  padding: 70px 18px 24px;
  transition: right 0.3s ease;
  overflow-y: auto;
  border-left: 1px solid var(--ui50-border);
}
.ui50-mobile-menu.ui50-open { right: 0; }
.ui50-mobile-menu a {
  display: block; padding: 12px 10px;
  color: var(--ui50-cream);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 1.5rem;
}
.ui50-mobile-menu a:hover { color: var(--ui50-gold); background: rgba(255,204,51,0.08); text-decoration: none; }
.ui50-menu-close {
  position: absolute; top: 14px; right: 14px;
  background: transparent; border: none; color: var(--ui50-gold);
  font-size: 2.4rem; cursor: pointer;
}

/* ---------- Hero ---------- */
.ui50-hero {
  margin-top: 64px;
  position: relative;
  overflow: hidden;
}
.ui50-carousel { position: relative; border-radius: 0; }
.ui50-slide {
  display: none;
  position: relative;
  min-height: 220px;
  padding: 28px 18px 32px;
  background-size: cover; background-position: center;
}
.ui50-slide.ui50-active { display: block; }
.ui50-slide::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(44,62,80,0.85) 0%, rgba(31,44,58,0.6) 100%);
}
.ui50-slide-content { position: relative; z-index: 2; }
.ui50-slide-tag {
  display: inline-block; padding: 4px 12px;
  background: var(--ui50-gold); color: #2C3E50;
  border-radius: 20px; font-size: 1.2rem; font-weight: 700; margin-bottom: 10px;
}
.ui50-slide h1, .ui50-slide h2 {
  font-size: 2.4rem; color: var(--ui50-cream);
  font-weight: 800; line-height: 1.2; margin-bottom: 8px;
}
.ui50-slide p { color: var(--ui50-vanilla); font-size: 1.4rem; margin-bottom: 16px; }
.ui50-carousel-dots {
  position: absolute; bottom: 10px; left: 0; right: 0;
  display: flex; justify-content: center; gap: 6px; z-index: 3;
}
.ui50-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.4); cursor: pointer; border: none; padding: 0;
}
.ui50-dot.ui50-active { background: var(--ui50-gold); width: 22px; border-radius: 4px; }

/* ---------- Section ---------- */
.ui50-section { padding: 26px 0; }
.ui50-section-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.9rem; font-weight: 800; color: var(--ui50-gold);
  margin-bottom: 14px;
}
.ui50-section-title i { font-size: 2.2rem; }
.ui50-section-sub { color: var(--ui50-muted); font-size: 1.35rem; margin-bottom: 16px; }

/* ---------- Category tabs ---------- */
.ui50-cat-tabs {
  display: flex; gap: 8px; overflow-x: auto;
  padding: 4px 0 12px; margin-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}
.ui50-cat-tabs::-webkit-scrollbar { display: none; }
.ui50-cat-tab {
  flex: 0 0 auto;
  background: rgba(255,255,255,0.06);
  color: var(--ui50-cream);
  border: 1px solid var(--ui50-border);
  padding: 8px 16px; border-radius: 22px;
  font-size: 1.3rem; font-weight: 600; cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.ui50-cat-tab:hover { color: var(--ui50-gold); }
.ui50-cat-tab.ui50-active {
  background: linear-gradient(135deg, var(--ui50-gold) 0%, var(--ui50-gold-dark) 100%);
  color: #2C3E50; border-color: transparent;
}

/* ---------- Game grid ---------- */
.ui50-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.ui50-game-card {
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: var(--ui50-radius);
  overflow: hidden;
  position: relative;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.ui50-game-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255,204,51,0.18);
}
.ui50-game-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #18222e;
  overflow: hidden;
}
.ui50-game-thumb img { width: 100%; height: 100%; object-fit: cover; }
.ui50-game-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 50%, rgba(0,0,0,0.75) 100%);
  display: flex; align-items: flex-end; justify-content: center;
  padding: 10px; opacity: 0; transition: opacity 0.2s ease;
}
.ui50-game-card:hover .ui50-game-overlay { opacity: 1; }
.ui50-play-btn {
  background: var(--ui50-gold); color: #2C3E50;
  border: none; padding: 7px 18px; border-radius: 22px;
  font-weight: 700; font-size: 1.25rem; cursor: pointer;
}
.ui50-game-info { padding: 8px 10px 12px; }
.ui50-game-name {
  font-size: 1.3rem; font-weight: 700; color: var(--ui50-cream);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ui50-game-cat {
  font-size: 1.1rem; color: var(--ui50-gold); margin-top: 2px;
}
.ui50-badge-hot {
  position: absolute; top: 6px; left: 6px;
  background: #e74c3c; color: #fff;
  font-size: 1rem; font-weight: 700;
  padding: 2px 7px; border-radius: 10px;
  z-index: 2;
}
.ui50-badge-new {
  position: absolute; top: 6px; left: 6px;
  background: #27ae60; color: #fff;
  font-size: 1rem; font-weight: 700;
  padding: 2px 7px; border-radius: 10px;
  z-index: 2;
}

/* ---------- Featured row ---------- */
.ui50-feature-row {
  display: flex; gap: 12px; overflow-x: auto;
  padding-bottom: 10px; -webkit-overflow-scrolling: touch;
}
.ui50-feature-row::-webkit-scrollbar { display: none; }
.ui50-feature-card {
  flex: 0 0 200px;
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: var(--ui50-radius);
  overflow: hidden;
}
.ui50-feature-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.ui50-feature-body { padding: 10px 12px 14px; }
.ui50-feature-body h3 { font-size: 1.4rem; color: var(--ui50-cream); margin-bottom: 4px; }
.ui50-feature-body p { font-size: 1.2rem; color: var(--ui50-muted); }

/* ---------- Promo banner ---------- */
.ui50-promo {
  background: linear-gradient(135deg, #FFCC33 0%, #e6b021 100%);
  border-radius: var(--ui50-radius);
  padding: 18px 16px;
  color: #2C3E50;
  display: flex; align-items: center; gap: 14px;
  margin: 16px 0;
}
.ui50-promo-icon { font-size: 3rem; color: #2C3E50; }
.ui50-promo-text { flex: 1; }
.ui50-promo-text h3 { font-size: 1.6rem; font-weight: 800; }
.ui50-promo-text p { font-size: 1.25rem; }
.ui50-promo-btn {
  background: #2C3E50; color: var(--ui50-gold);
  border: none; padding: 10px 16px; border-radius: 22px;
  font-weight: 700; font-size: 1.3rem; cursor: pointer;
}

/* ---------- SEO long text ---------- */
.ui50-seo {
  background: var(--ui50-bg2);
  border-radius: var(--ui50-radius);
  padding: 20px 16px;
  margin: 18px 0;
  border: 1px solid var(--ui50-border);
}
.ui50-seo h2 { color: var(--ui50-gold); font-size: 1.8rem; margin-bottom: 10px; }
.ui50-seo h3 { color: var(--ui50-cream); font-size: 1.5rem; margin: 14px 0 6px; }
.ui50-seo p { color: var(--ui50-muted); font-size: 1.35rem; margin-bottom: 10px; }
.ui50-seo ul { padding-left: 20px; margin-bottom: 10px; }
.ui50-seo li { color: var(--ui50-muted); font-size: 1.35rem; margin-bottom: 4px; }
.ui50-seo a { color: var(--ui50-gold); }

/* ---------- FAQ ---------- */
.ui50-faq { margin: 18px 0; }
.ui50-faq-item {
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
}
.ui50-faq-q {
  width: 100%; text-align: left;
  background: transparent; border: none; cursor: pointer;
  padding: 14px 16px; color: var(--ui50-cream);
  font-size: 1.4rem; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.ui50-faq-q .ui50-icon { color: var(--ui50-gold); font-size: 1.8rem; transition: transform 0.2s ease; }
.ui50-faq-item.ui50-open .ui50-faq-q .ui50-icon { transform: rotate(45deg); }
.ui50-faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 16px;
  color: var(--ui50-muted); font-size: 1.32rem;
}
.ui50-faq-item.ui50-open .ui50-faq-a { padding-bottom: 14px; }

/* ---------- Footer ---------- */
.ui50-footer {
  background: #1a2531;
  border-top: 1px solid var(--ui50-border);
  padding: 26px 16px 90px;
  margin-top: 20px;
}
.ui50-footer-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
  max-width: 1180px; margin: 0 auto;
}
.ui50-footer-col h4 { color: var(--ui50-gold); font-size: 1.4rem; margin-bottom: 10px; }
.ui50-footer-col a, .ui50-footer-col p {
  display: block; color: var(--ui50-muted); font-size: 1.25rem; margin-bottom: 6px;
}
.ui50-footer-col a:hover { color: var(--ui50-gold); }
.ui50-footer-bottom {
  max-width: 1180px; margin: 18px auto 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 14px;
  text-align: center;
  color: var(--ui50-muted); font-size: 1.2rem;
}

/* ---------- Mobile bottom nav ---------- */
.ui50-bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(180deg, #243444 0%, #1a2531 100%);
  border-top: 1px solid var(--ui50-border);
  display: flex; justify-content: space-around;
  height: 62px;
  box-shadow: 0 -3px 14px rgba(0,0,0,0.35);
}
.ui50-bottom-nav a, .ui50-bottom-nav button {
  flex: 1;
  background: none; border: none;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px;
  color: var(--ui50-muted); font-size: 1.05rem; font-weight: 600;
  text-decoration: none;
  min-width: 60px; min-height: 60px;
  cursor: pointer;
  transition: color 0.15s ease;
  position: relative;
}
.ui50-bottom-nav a:hover, .ui50-bottom-nav button:hover { text-decoration: none; }
.ui50-bottom-nav .ui50-nav-icon {
  font-size: 2.2rem; line-height: 1;
}
.ui50-bottom-nav a:hover, .ui50-bottom-nav button:hover { color: var(--ui50-gold); }
.ui50-bottom-nav .ui50-active-nav { color: var(--ui50-gold); }
.ui50-bottom-nav .ui50-active-nav::before {
  content: ""; position: absolute; top: 0; left: 50%;
  transform: translateX(-50%);
  width: 30px; height: 3px;
  background: var(--ui50-gold); border-radius: 0 0 4px 4px;
}

/* ---------- Back to top ---------- */
.ui50-to-top {
  position: fixed; right: 14px; bottom: 78px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--ui50-gold); color: #2C3E50;
  border: none; cursor: pointer; font-size: 2rem;
  display: flex; align-items: center; justify-content: center;
  z-index: 900;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 3px 10px rgba(0,0,0,0.4);
}
.ui50-to-top.ui50-show { opacity: 1; pointer-events: auto; }

/* ---------- Search ---------- */
.ui50-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: 24px;
  padding: 8px 14px;
  margin-bottom: 12px;
}
.ui50-search input {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--ui50-cream); font-size: 1.35rem;
}
.ui50-search i { color: var(--ui50-gold); font-size: 1.6rem; }

/* ---------- Highlights / steps ---------- */
.ui50-steps {
  display: grid; grid-template-columns: 1fr; gap: 10px;
  margin: 14px 0;
}
.ui50-step {
  display: flex; gap: 12px; align-items: center;
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: 12px;
  padding: 12px 14px;
}
.ui50-step-num {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%;
  background: var(--ui50-gold); color: #2C3E50;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.5rem;
}
.ui50-step-text h4 { color: var(--ui50-cream); font-size: 1.4rem; margin-bottom: 2px; }
.ui50-step-text p { color: var(--ui50-muted); font-size: 1.25rem; }

/* ---------- Stats ---------- */
.ui50-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 10px; margin: 14px 0;
}
.ui50-stat {
  background: var(--ui50-bg2);
  border: 1px solid var(--ui50-border);
  border-radius: 12px;
  padding: 12px 6px; text-align: center;
}
.ui50-stat-num { color: var(--ui50-gold); font-size: 1.8rem; font-weight: 800; }
.ui50-stat-label { color: var(--ui50-muted); font-size: 1.1rem; }

/* ---------- Responsive ---------- */
@media (min-width: 769px) {
  body { background: #243444; }
  .ui50-header { position: sticky; }
  .ui50-menu-toggle { display: none; }
  .ui50-desktop-nav { display: flex; }
  .ui50-bottom-nav { display: none; }
  .ui50-footer { padding-bottom: 26px; }
  .ui50-wrap { max-width: 1180px; }
  .ui50-hero { margin-top: 0; }
  .ui50-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
  .ui50-footer-grid { grid-template-columns: repeat(4, 1fr); }
  .ui50-steps { grid-template-columns: repeat(3, 1fr); }
  .ui50-slide { min-height: 300px; padding: 50px 60px; }
  .ui50-slide h1, .ui50-slide h2 { font-size: 3.2rem; }
  .ui50-slide p { font-size: 1.7rem; }
}

@media (max-width: 768px) {
  main { padding-bottom: 80px; }
}

@media (min-width: 600px) and (max-width: 768px) {
  .ui50-grid { grid-template-columns: repeat(3, 1fr); }
}