/**
 * 499 Bet APK - Core Stylesheet
 * All classes use uifb- prefix for namespace isolation
 * Colors: #1E1E1E (dark bg) | #F4A460 (sandy gold accent)
 * Mobile-first design, max-width: 430px
 */

/* CSS Variables */
:root {
  --uifb-primary: #F4A460;
  --uifb-bg: #1E1E1E;
  --uifb-bg-dark: #141414;
  --uifb-bg-card: #2A2A2A;
  --uifb-text: #F4A460;
  --uifb-text-light: #F5F5F5;
  --uifb-text-muted: #A0A0A0;
  --uifb-accent: #FFD700;
  --uifb-danger: #FF4757;
  --uifb-success: #2ED573;
  --uifb-border: #3A3A3A;
  --uifb-radius: 0.8rem;
  --uifb-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Segoe UI', 'Noto Sans Bengali', Tahoma, sans-serif;
  background-color: var(--uifb-bg);
  color: var(--uifb-text-light);
  line-height: 1.5rem;
  font-size: 1.4rem;
  max-width: 430px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: var(--uifb-primary);
}

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

/* Container */
.uifb-container {
  width: 100%;
  padding: 0 1.2rem;
  max-width: 430px;
  margin: 0 auto;
}

.uifb-wrapper {
  width: 100%;
  padding: 1.2rem;
}

/* Header */
.uifb-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--uifb-bg-dark);
  border-bottom: 1px solid var(--uifb-border);
  max-width: 430px;
  margin: 0 auto;
  transition: background 0.3s ease;
}

.uifb-header-scrolled {
  background: rgba(20, 20, 20, 0.96);
  box-shadow: 0 2px 16px rgba(244, 164, 96, 0.1);
}

.uifb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  height: 5.2rem;
}

.uifb-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.uifb-logo img {
  width: 2.8rem;
  height: 2.8rem;
  border-radius: 0.4rem;
}

.uifb-logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--uifb-primary);
  white-space: nowrap;
}

.uifb-header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* Buttons */
.uifb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  border-radius: var(--uifb-radius);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  min-height: 3.6rem;
  min-width: 4.4rem;
  text-align: center;
}

.uifb-btn-register {
  background: linear-gradient(135deg, #F4A460, #E8944A);
  color: #1E1E1E;
}

.uifb-btn-register:hover {
  background: linear-gradient(135deg, #FFB870, #F4A460);
  transform: scale(1.04);
}

.uifb-btn-login {
  background: transparent;
  color: var(--uifb-primary);
  border: 1.5px solid var(--uifb-primary);
}

.uifb-btn-login:hover {
  background: rgba(244, 164, 96, 0.12);
}

.uifb-btn-promo {
  background: linear-gradient(135deg, var(--uifb-primary), #FFD700);
  color: #1E1E1E;
  font-size: 1.3rem;
  padding: 0.8rem 2rem;
  width: 100%;
  max-width: 280px;
  border-radius: 3rem;
  font-weight: 700;
}

.uifb-btn-promo:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 20px rgba(244, 164, 96, 0.35);
}

/* Menu Toggle */
.uifb-menu-toggle {
  background: none;
  border: none;
  color: var(--uifb-primary);
  font-size: 2rem;
  cursor: pointer;
  padding: 0.4rem;
  display: flex;
  align-items: center;
}

/* Mobile Menu */
.uifb-mobile-menu {
  display: none;
  position: fixed;
  top: 5.2rem;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--uifb-bg-dark);
  border-bottom: 2px solid var(--uifb-primary);
  max-width: 430px;
  margin: 0 auto;
  padding: 1rem 0;
}

.uifb-menu-active {
  animation: uifb-slideDown 0.25s ease;
}

@keyframes uifb-slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.uifb-mobile-menu a {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.6rem;
  color: var(--uifb-text-light);
  font-size: 1.3rem;
  border-bottom: 1px solid var(--uifb-border);
  transition: background 0.2s;
}

.uifb-mobile-menu a:hover {
  background: rgba(244, 164, 96, 0.08);
  color: var(--uifb-primary);
}

.uifb-mobile-menu .material-icons {
  font-size: 2rem;
  color: var(--uifb-primary);
}

/* Carousel */
.uifb-carousel {
  position: relative;
  overflow: hidden;
  border-radius: var(--uifb-radius);
  margin-top: 5.6rem;
}

.uifb-carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}

.uifb-carousel-slide {
  min-width: 100%;
  cursor: pointer;
}

.uifb-carousel-slide img {
  width: 100%;
  height: 18rem;
  object-fit: cover;
}

.uifb-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 0;
}

.uifb-carousel-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: var(--uifb-border);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.uifb-dot-active {
  background: var(--uifb-primary);
  transform: scale(1.2);
}

/* Section */
.uifb-section {
  padding: 2rem 0;
}

.uifb-section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--uifb-primary);
  margin-bottom: 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--uifb-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.uifb-section-title i,
.uifb-section-title .material-icons {
  font-size: 2rem;
}

/* Game Grid */
.uifb-game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
}

.uifb-game-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform 0.2s;
  padding: 0.4rem;
}

.uifb-game-item:hover {
  transform: scale(1.06);
}

.uifb-game-item img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 0.6rem;
  object-fit: cover;
  border: 1.5px solid var(--uifb-border);
  transition: border-color 0.2s;
}

.uifb-game-item:hover img {
  border-color: var(--uifb-primary);
}

.uifb-game-name {
  font-size: 1rem;
  color: var(--uifb-text-light);
  text-align: center;
  margin-top: 0.3rem;
  line-height: 1.2rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

/* Category Header */
.uifb-cat-header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 1.8rem 0 1rem;
  padding: 0.6rem 0;
}

.uifb-cat-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--uifb-primary);
}

.uifb-cat-header i {
  font-size: 2rem;
  color: var(--uifb-accent);
}

/* Content Blocks */
.uifb-content-block {
  background: var(--uifb-bg-card);
  border-radius: var(--uifb-radius);
  padding: 1.6rem;
  margin: 1.2rem 0;
  border: 1px solid var(--uifb-border);
}

.uifb-content-block h2 {
  font-size: 1.6rem;
  color: var(--uifb-primary);
  margin-bottom: 1rem;
}

.uifb-content-block h3 {
  font-size: 1.4rem;
  color: var(--uifb-accent);
  margin: 1rem 0 0.6rem;
}

.uifb-content-block p {
  font-size: 1.3rem;
  line-height: 1.8rem;
  color: var(--uifb-text-muted);
  margin-bottom: 0.8rem;
}

.uifb-content-block ul {
  padding-left: 1.6rem;
  margin-bottom: 0.8rem;
}

.uifb-content-block li {
  font-size: 1.3rem;
  line-height: 1.8rem;
  color: var(--uifb-text-muted);
  margin-bottom: 0.4rem;
}

.uifb-highlight {
  color: var(--uifb-primary);
  font-weight: 600;
}

/* Promo Banner */
.uifb-promo-banner {
  background: linear-gradient(135deg, #2A2A2A 0%, #3A2A1A 100%);
  border: 1.5px solid var(--uifb-primary);
  border-radius: var(--uifb-radius);
  padding: 1.6rem;
  text-align: center;
  margin: 1.5rem 0;
}

.uifb-promo-banner h3 {
  color: var(--uifb-accent);
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
}

.uifb-promo-banner p {
  color: var(--uifb-text-muted);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

/* Footer */
.uifb-footer {
  background: var(--uifb-bg-dark);
  border-top: 1px solid var(--uifb-border);
  padding: 2rem 1.2rem;
  margin-top: 2rem;
}

.uifb-footer-brand {
  text-align: center;
  margin-bottom: 1.4rem;
}

.uifb-footer-brand p {
  font-size: 1.2rem;
  color: var(--uifb-text-muted);
  line-height: 1.6rem;
}

.uifb-footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin: 1.2rem 0;
}

.uifb-footer-links a {
  font-size: 1.1rem;
  color: var(--uifb-text-muted);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--uifb-border);
  border-radius: 0.4rem;
  transition: all 0.2s;
}

.uifb-footer-links a:hover {
  color: var(--uifb-primary);
  border-color: var(--uifb-primary);
}

.uifb-footer-copy {
  text-align: center;
  font-size: 1.1rem;
  color: var(--uifb-text-muted);
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--uifb-border);
}

/* Bottom Navigation */
.uifb-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--uifb-bg-dark);
  border-top: 1.5px solid var(--uifb-primary);
  max-width: 430px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 6rem;
  padding: 0 0.4rem;
}

.uifb-bottom-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--uifb-text-muted);
  cursor: pointer;
  min-width: 5.6rem;
  min-height: 5rem;
  transition: all 0.2s;
  padding: 0.3rem;
  gap: 0.2rem;
}

.uifb-bottom-btn:hover,
.uifb-bottom-btn.uifb-active {
  color: var(--uifb-primary);
  transform: scale(1.08);
}

.uifb-bottom-btn i,
.uifb-bottom-btn .material-icons,
.uifb-bottom-btn ion-icon,
.uifb-bottom-btn bi {
  font-size: 2.2rem;
}

.uifb-bottom-btn span {
  font-size: 1rem;
  font-weight: 500;
}

.uifb-bottom-btn.uifb-active span {
  color: var(--uifb-primary);
}

/* Desktop: hide bottom nav */
@media (min-width: 769px) {
  .uifb-bottom-nav {
    display: none;
  }
}

/* Mobile: bottom padding for nav clearance */
@media (max-width: 768px) {
  main {
    padding-bottom: 7.5rem;
  }
}

/* Main content top padding for fixed header */
main {
  padding-top: 0;
}

/* Text promo link */
.uifb-text-link {
  color: var(--uifb-primary);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.uifb-text-link:hover {
  color: var(--uifb-accent);
}

/* Winners list */
.uifb-winner-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem;
  border-bottom: 1px solid var(--uifb-border);
}

.uifb-winner-name {
  font-size: 1.2rem;
  color: var(--uifb-text-light);
}

.uifb-winner-amount {
  font-size: 1.3rem;
  color: var(--uifb-success);
  font-weight: 700;
}

/* Payment icons row */
.uifb-payment-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 0;
}

.uifb-payment-item {
  background: var(--uifb-bg-card);
  border: 1px solid var(--uifb-border);
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 1.1rem;
  color: var(--uifb-text-muted);
}

/* Responsive helpers */
.uifb-text-center { text-align: center; }
.uifb-mt-1 { margin-top: 1rem; }
.uifb-mt-2 { margin-top: 2rem; }
.uifb-mb-1 { margin-bottom: 1rem; }
.uifb-mb-2 { margin-bottom: 2rem; }

/* FAQ accordion */
.uifb-faq-item {
  border-bottom: 1px solid var(--uifb-border);
  padding: 1rem 0;
}

.uifb-faq-q {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--uifb-primary);
  margin-bottom: 0.4rem;
}

.uifb-faq-a {
  font-size: 1.2rem;
  color: var(--uifb-text-muted);
  line-height: 1.6rem;
}

/* Feature cards */
.uifb-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.uifb-feature-card {
  background: var(--uifb-bg-card);
  border: 1px solid var(--uifb-border);
  border-radius: var(--uifb-radius);
  padding: 1.2rem;
  text-align: center;
}

.uifb-feature-card i,
.uifb-feature-card .material-icons {
  font-size: 2.4rem;
  color: var(--uifb-primary);
  margin-bottom: 0.6rem;
}

.uifb-feature-card h3 {
  font-size: 1.2rem;
  color: var(--uifb-accent);
  margin-bottom: 0.4rem;
}

.uifb-feature-card p {
  font-size: 1.1rem;
  color: var(--uifb-text-muted);
  line-height: 1.4rem;
}