/* ==========================================================================
   Kuvin - Core base stylesheet (theme.css)
   Prefix: sfd1-
   Palette: #BAFFC9 | #2C2C2C | #008B8B | #4DB6AC (dark bg, light text)
   Mobile-first, max-width 430px. rem units (root 62.5%).
   ========================================================================== */

:root {
  --sfd1-primary: #008B8B;
  --sfd1-primary-dark: #006d6d;
  --sfd1-accent: #4DB6AC;
  --sfd1-light: #BAFFC9;
  --sfd1-bg: #2C2C2C;
  --sfd1-bg-soft: #1f1f1f;
  --sfd1-bg-card: #383838;
  --sfd1-text: #f3fff5;
  --sfd1-text-muted: #b8c9bd;
  --sfd1-border: rgba(186, 255, 201, 0.18);
  --sfd1-gold: #ffd54a;
  --sfd1-danger: #ff6b6b;
  --sfd1-radius: 1.2rem;
  --sfd1-radius-sm: 0.8rem;
  --sfd1-shadow: 0 0.4rem 1.6rem rgba(0, 0, 0, 0.35);
  --sfd1-header-h: 5.6rem;
  --sfd1-nav-h: 6.2rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--sfd1-bg);
  color: var(--sfd1-text);
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 1.5rem;
  line-height: 1.5rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--sfd1-light); text-decoration: none; }

/* Layout containers */
.sfd1-container {
  width: 100%;
  max-width: 430px;
  margin: 0 auto;
  padding: 0 1.2rem;
}
.sfd1-wrapper {
  max-width: 430px;
  margin: 0 auto;
  background: var(--sfd1-bg);
  min-height: 100vh;
}
main { padding-bottom: 8rem; }

/* ============================== Header ============================== */
.sfd1-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--sfd1-header-h);
  background: linear-gradient(90deg, #006d6d 0%, #008B8B 55%, #4DB6AC 100%);
  z-index: 1000;
  box-shadow: 0 0.3rem 1rem rgba(0,0,0,0.4);
}
.sfd1-header-inner {
  max-width: 430px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}
.sfd1-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 0.04rem;
}
.sfd1-logo img { width: 3rem; height: 3rem; border-radius: 0.6rem; }
.sfd1-logo span { color: var(--sfd1-light); }

.sfd1-header-actions { display: flex; align-items: center; gap: 0.5rem; }
.sfd1-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: none;
  border-radius: var(--sfd1-radius-sm);
  padding: 0.7rem 1.2rem;
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  min-height: 4rem;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.sfd1-btn:active { transform: scale(0.95); }
.sfd1-btn-login {
  background: rgba(255,255,255,0.16);
  color: #fff;
  border: 0.1rem solid rgba(255,255,255,0.4);
}
.sfd1-btn-register {
  background: var(--sfd1-gold);
  color: #2C2C2C;
  box-shadow: 0 0.3rem 0.8rem rgba(255,213,74,0.4);
}
.sfd1-btn-register:hover { background: #ffcf6b; }
.sfd1-btn-block { width: 100%; padding: 1.1rem; font-size: 1.5rem; }

.sfd1-menu-btn {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 2rem;
  width: 4rem;
  height: 4rem;
  border-radius: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ============================== Mobile menu ============================== */
.sfd1-mobile-menu {
  position: fixed;
  top: var(--sfd1-header-h);
  left: 0; right: 0;
  background: var(--sfd1-bg-soft);
  border-bottom: 0.2rem solid var(--sfd1-primary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
  z-index: 9999;
}
.sfd1-mobile-menu.sfd1-menu-open { max-height: 60rem; }
.sfd1-menu-list {
  list-style: none;
  margin: 0; padding: 0.6rem 1.2rem 1.2rem;
  max-width: 430px;
  margin-left: auto; margin-right: auto;
}
.sfd1-menu-list li { border-bottom: 0.1rem solid var(--sfd1-border); }
.sfd1-menu-list a {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.1rem 0.6rem;
  color: var(--sfd1-text);
  font-size: 1.4rem;
  font-weight: 600;
}
.sfd1-menu-list a i, .sfd1-menu-list a span.mui { color: var(--sfd1-accent); font-size: 2rem; width: 2.4rem; text-align: center; }

/* ============================== Hero / Carousel ============================== */
.sfd1-carousel {
  position: relative;
  margin-top: calc(var(--sfd1-header-h) + 1rem);
  border-radius: var(--sfd1-radius);
  overflow: hidden;
  box-shadow: var(--sfd1-shadow);
}
.sfd1-slides { position: relative; }
.sfd1-slide {
  display: none;
  position: relative;
  cursor: pointer;
}
.sfd1-slide.sfd1-slide-active { display: block; }
.sfd1-slide img { width: 100%; height: 18rem; object-fit: cover; }
.sfd1-slide-cap {
  position: absolute;
  left: 1rem; bottom: 1rem;
  background: rgba(0,0,0,0.55);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0.8rem;
  font-size: 1.3rem;
  font-weight: 700;
}
.sfd1-dots {
  position: absolute;
  left: 0; right: 0; bottom: 0.8rem;
  display: flex; justify-content: center; gap: 0.5rem;
}
.sfd1-dot {
  width: 0.8rem; height: 0.8rem; border-radius: 50%;
  background: rgba(255,255,255,0.5);
  border: none; cursor: pointer;
}
.sfd1-dot.sfd1-dot-active { background: var(--sfd1-gold); width: 2rem; border-radius: 0.6rem; }

/* ============================== Sections ============================== */
.sfd1-section { padding: 1.6rem 0; }
.sfd1-section-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin: 0 0 1rem;
  color: var(--sfd1-light);
  display: flex; align-items: center; gap: 0.6rem;
}
.sfd1-section-title i, .sfd1-section-title .mui { color: var(--sfd1-accent); font-size: 2.2rem; }
.sfd1-section-sub {
  color: var(--sfd1-text-muted);
  font-size: 1.3rem;
  margin: 0 0 1rem;
}

.sfd1-intro {
  background: var(--sfd1-bg-card);
  border-left: 0.3rem solid var(--sfd1-primary);
  border-radius: var(--sfd1-radius-sm);
  padding: 1.2rem 1.4rem;
  color: var(--sfd1-text-muted);
  font-size: 1.35rem;
  line-height: 2rem;
}
.sfd1-intro strong { color: var(--sfd1-light); }

/* Game grid */
.sfd1-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}
.sfd1-game-card {
  background: var(--sfd1-bg-card);
  border-radius: var(--sfd1-radius-sm);
  border: 0.1rem solid var(--sfd1-border);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease;
  display: flex; flex-direction: column;
}
.sfd1-game-card:active { transform: scale(0.96); border-color: var(--sfd1-accent); }
.sfd1-game-card img { width: 100%; height: 7.5rem; object-fit: cover; }
.sfd1-game-card .sfd1-game-name {
  padding: 0.4rem 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--sfd1-text);
  text-align: center;
  line-height: 1.3rem;
  min-height: 2.6rem;
  display: flex; align-items: center; justify-content: center;
}
.sfd1-cat-label {
  display: inline-block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--sfd1-primary);
  background: var(--sfd1-light);
  padding: 0.2rem 0.8rem;
  border-radius: 2rem;
  margin-bottom: 0.8rem;
}

/* Filter chips */
.sfd1-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.sfd1-chip {
  background: var(--sfd1-bg-card);
  color: var(--sfd1-text-muted);
  border: 0.1rem solid var(--sfd1-border);
  border-radius: 2rem;
  padding: 0.5rem 1rem;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
}
.sfd1-chip.sfd1-chip-active {
  background: var(--sfd1-primary);
  color: #fff;
  border-color: var(--sfd1-primary);
}

/* Feature / info cards */
.sfd1-card {
  background: var(--sfd1-bg-card);
  border-radius: var(--sfd1-radius-sm);
  padding: 1.2rem;
  border: 0.1rem solid var(--sfd1-border);
  margin-bottom: 1rem;
}
.sfd1-card h3 {
  margin: 0 0 0.6rem; font-size: 1.5rem; color: var(--sfd1-light);
  display: flex; align-items: center; gap: 0.5rem;
}
.sfd1-card h3 i, .sfd1-card h3 .mui { color: var(--sfd1-accent); }
.sfd1-card p { margin: 0 0 0.6rem; color: var(--sfd1-text-muted); font-size: 1.3rem; line-height: 1.9rem; }

.sfd1-feature-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem;
}
.sfd1-feature {
  background: var(--sfd1-bg-card);
  border-radius: var(--sfd1-radius-sm);
  padding: 1rem; text-align: center;
  border: 0.1rem solid var(--sfd1-border);
}
.sfd1-feature .icon { font-size: 2.4rem; color: var(--sfd1-accent); margin-bottom: 0.4rem; }
.sfd1-feature h4 { margin: 0 0 0.3rem; font-size: 1.3rem; color: var(--sfd1-light); }
.sfd1-feature p { margin: 0; font-size: 1.15rem; color: var(--sfd1-text-muted); line-height: 1.6rem; }

/* RTP table */
.sfd1-rtp-table { width: 100%; border-collapse: collapse; font-size: 1.2rem; }
.sfd1-rtp-table th, .sfd1-rtp-table td {
  padding: 0.6rem 0.4rem; text-align: center;
  border-bottom: 0.1rem solid var(--sfd1-border);
}
.sfd1-rtp-table th { color: var(--sfd1-light); }
.sfd1-rtp-table td { color: var(--sfd1-text-muted); }
.sfd1-rtp-table td.hot { color: var(--sfd1-gold); font-weight: 700; }

/* Testimonials */
.sfd1-testimonial {
  background: var(--sfd1-bg-card);
  border-radius: var(--sfd1-radius-sm);
  padding: 1rem 1.2rem;
  margin-bottom: 0.8rem;
  border-left: 0.3rem solid var(--sfd1-accent);
}
.sfd1-testimonial .who { color: var(--sfd1-light); font-weight: 700; font-size: 1.3rem; margin-bottom: 0.3rem; }
.sfd1-testimonial .what { color: var(--sfd1-text-muted); font-size: 1.25rem; line-height: 1.8rem; }
.sfd1-stars { color: var(--sfd1-gold); font-size: 1.2rem; }

/* Winners */
.sfd1-winner-list { list-style: none; margin: 0; padding: 0; }
.sfd1-winner-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.7rem 0; border-bottom: 0.1rem solid var(--sfd1-border);
  font-size: 1.25rem;
}
.sfd1-winner-list .name { color: var(--sfd1-text); }
.sfd1-winner-list .amt { color: var(--sfd1-gold); font-weight: 700; }

/* Payment methods */
.sfd1-pay-grid { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.sfd1-pay {
  background: var(--sfd1-bg-card);
  border: 0.1rem solid var(--sfd1-border);
  border-radius: 0.8rem;
  padding: 0.6rem 1rem;
  font-size: 1.2rem;
  color: var(--sfd1-text-muted);
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.sfd1-pay i, .sfd1-pay .mui { color: var(--sfd1-accent); }

/* Promo CTA */
.sfd1-cta {
  background: linear-gradient(135deg, #008B8B 0%, #4DB6AC 100%);
  border-radius: var(--sfd1-radius);
  padding: 1.6rem 1.4rem;
  text-align: center;
  color: #fff;
  margin: 1.4rem 0;
}
.sfd1-cta h3 { margin: 0 0 0.4rem; font-size: 1.8rem; color: #fff; }
.sfd1-cta p { margin: 0 0 1rem; color: var(--sfd1-light); font-size: 1.3rem; }
.sfd1-cta .sfd1-btn { background: var(--sfd1-gold); color: #2C2C2C; }

/* App download CTA */
.sfd1-app-cta {
  background: var(--sfd1-bg-card);
  border: 0.1rem solid var(--sfd1-border);
  border-radius: var(--sfd1-radius);
  padding: 1.4rem;
  display: flex; flex-direction: column; gap: 0.8rem;
  align-items: center; text-align: center;
}
.sfd1-app-cta h3 { margin: 0; color: var(--sfd1-light); font-size: 1.6rem; }
.sfd1-app-cta p { margin: 0; color: var(--sfd1-text-muted); font-size: 1.25rem; }

/* Category highlights */
.sfd1-cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
.sfd1-cat-tile {
  border-radius: var(--sfd1-radius-sm);
  padding: 1rem; text-align: center; cursor: pointer;
  color: #fff; border: 0.1rem solid var(--sfd1-border);
  background: linear-gradient(135deg, var(--sfd1-primary-dark), var(--sfd1-primary));
}
.sfd1-cat-tile h4 { margin: 0.3rem 0 0; font-size: 1.3rem; }
.sfd1-cat-tile .icon { font-size: 2.2rem; color: var(--sfd1-light); }

/* Inline promo text links */
.sfd1-link {
  color: var(--sfd1-gold);
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
}

/* Footer */
.sfd1-footer {
  background: var(--sfd1-bg-soft);
  border-top: 0.2rem solid var(--sfd1-primary);
  padding: 1.6rem 1.2rem 2rem;
  margin-top: 1.6rem;
}
.sfd1-footer-brand { color: var(--sfd1-text-muted); font-size: 1.25rem; line-height: 1.8rem; margin-bottom: 1rem; }
.sfd1-footer-brand strong { color: var(--sfd1-light); }
.sfd1-footer-links { display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; margin-bottom: 1rem; }
.sfd1-footer-links a { color: var(--sfd1-accent); font-size: 1.2rem; font-weight: 600; }
.sfd1-footer-promos { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0.8rem 0 1rem; }
.sfd1-footer-promos .sfd1-btn { padding: 0.6rem 1rem; font-size: 1.2rem; min-height: 3.4rem; }
.sfd1-footer-copy { color: var(--sfd1-text-muted); font-size: 1.1rem; border-top: 0.1rem solid var(--sfd1-border); padding-top: 0.8rem; }

/* ============================== Mobile bottom nav ============================== */
.sfd1-bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--sfd1-nav-h);
  background: var(--sfd1-bg-soft);
  border-top: 0.2rem solid var(--sfd1-primary);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 -0.3rem 1rem rgba(0,0,0,0.4);
}
.sfd1-navbtn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--sfd1-text-muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.2rem;
  min-width: 60px;
  min-height: 60px;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.4rem 0.2rem;
  transition: color 0.15s ease, transform 0.12s ease;
}
.sfd1-navbtn i, .sfd1-navbtn .mui, .sfd1-navbtn .ion {
  font-size: 2.2rem; line-height: 1;
}
.sfd1-navbtn:active { transform: scale(0.92); }
.sfd1-navbtn.sfd1-navbtn-active { color: var(--sfd1-gold); }
.sfd1-navbtn.sfd1-navbtn-active i,
.sfd1-navbtn.sfd1-navbtn-active .mui,
.sfd1-navbtn.sfd1-navbtn-active .ion { color: var(--sfd1-gold); }
.sfd1-nav-badge {
  position: absolute; top: 0.3rem; right: 1.2rem;
  background: var(--sfd1-danger); color: #fff;
  font-size: 0.9rem; font-weight: 700;
  border-radius: 1rem; padding: 0 0.4rem; min-width: 1.4rem; height: 1.4rem;
  display: inline-flex; align-items: center; justify-content: center;
}
.sfd1-navbtn { position: relative; }

/* ============================== Responsive ============================== */
@media (max-width: 768px) {
  main { padding-bottom: 8rem; }
}
@media (min-width: 769px) {
  .sfd1-bottom-nav { display: none; }
}
@media (min-width: 431px) and (max-width: 768px) {
  .sfd1-bottom-nav { max-width: 430px; left: 50%; transform: translateX(-50%); }
  .sfd1-header { max-width: 430px; left: 50%; transform: translateX(-50%); }
}