/* ==========================================================================
   4777Bet Bangladesh - Core Responsive Stylesheet (2026 Production Standard)
   Target Market: Bangladesh (Mobile-First, E-E-A-T Authority, Core Web Vitals)
   ========================================================================== */

:root {
  --bg-primary: #0a0d1a;
  --bg-secondary: #12172d;
  --bg-card: #18203c;
  --bg-card-hover: #202b4f;
  --text-main: #f0f4ff;
  --text-muted: #9aa8cc;
  --text-dim: #64748b;
  --accent-gold: #ffb703;
  --accent-gold-hover: #e09f00;
  --accent-emerald: #00e676;
  --accent-emerald-glow: rgba(0, 230, 118, 0.25);
  --accent-cyan: #00b4d8;
  --accent-crimson: #ff3366;
  --border-light: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(255, 183, 3, 0.3);
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --container-width: 1200px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 70px; /* Space for sticky mobile bar */
}

@media (min-width: 992px) {
  body {
    padding-bottom: 0;
  }
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 16px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 13, 26, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}

.brand-logo span {
  color: var(--accent-gold);
}

.brand-logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
  }
  
  .nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px 4px;
    position: relative;
  }
  
  .nav-link:hover, .nav-link.active {
    color: #fff;
  }
  
  .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 2px;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  border: none;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.1rem;
}

.btn-primary {
  background: linear-gradient(135deg, #ffd700, #ff9100);
  color: #0c0f1d;
  box-shadow: 0 4px 15px rgba(255, 183, 3, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ffe033, #ffa000);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 183, 3, 0.5);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-accent);
  color: var(--accent-gold);
}

.btn-secondary:hover {
  background: rgba(255, 183, 3, 0.1);
  color: #fff;
}

.btn-success {
  background: linear-gradient(135deg, #00e676, #00b0ff);
  color: #071524;
  box-shadow: 0 4px 15px var(--accent-emerald-glow);
}

.btn-success:hover {
  background: linear-gradient(135deg, #1aff87, #1ac1ff);
  transform: translateY(-2px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background: radial-gradient(circle at 50% 20%, rgba(24, 32, 60, 0.9), var(--bg-primary) 80%);
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border-light);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.badge-trust {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 230, 118, 0.12);
  border: 1px solid rgba(0, 230, 118, 0.3);
  color: var(--accent-emerald);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 2.2rem;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3rem;
  }
}

.hero-title .highlight {
  background: linear-gradient(135deg, #ffd700, #00e676);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-payment-trust {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--border-light);
}

.payment-trust-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  font-weight: 700;
}

.payment-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.payment-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-size: 0.85rem;
  font-weight: 600;
}

.payment-badge-item img {
  height: 20px;
  width: auto;
}

/* ==========================================================================
   Trust & E-E-A-T Callouts
   ========================================================================== */
.expert-insight-box {
  background: linear-gradient(135deg, rgba(24, 32, 60, 0.95), rgba(18, 23, 45, 0.95));
  border-left: 4px solid var(--accent-emerald);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 22px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.expert-insight-header {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-emerald);
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tldr-box {
  background: rgba(255, 183, 3, 0.08);
  border: 1px solid rgba(255, 183, 3, 0.25);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 24px 0;
}

.tldr-title {
  color: var(--accent-gold);
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.answer-capsule {
  background: rgba(0, 180, 216, 0.08);
  border-left: 4px solid var(--accent-cyan);
  padding: 14px 18px;
  margin: 16px 0 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1.05rem;
  font-weight: 500;
  color: #fff;
  line-height: 1.5;
}

/* ==========================================================================
   Content Sections & Grid Systems
   ========================================================================== */
.section-py {
  padding: 56px 0;
}

.section-header {
  margin-bottom: 32px;
  text-align: left;
}

.section-subtitle {
  color: var(--accent-gold);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 800;
  margin-bottom: 6px;
  display: block;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.2rem;
  }
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (min-width: 576px) {
  .game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 992px) {
  .game-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
  }
}

.game-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.game-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
}

.game-thumb-wrapper {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #0f1424;
}

.game-thumb-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.game-card:hover .game-thumb-wrapper img {
  transform: scale(1.06);
}

.game-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(10, 13, 26, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid var(--accent-gold);
  color: var(--accent-gold);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.game-card-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.game-provider {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 700;
}

.game-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin: 4px 0 10px;
}

.game-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.game-card-cta {
  margin-top: auto;
  display: flex;
  gap: 8px;
}

.game-card-cta .btn {
  flex: 1;
}

/* ==========================================================================
   Article & Editorial Layout
   ========================================================================== */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 40px 0;
}

@media (min-width: 992px) {
  .article-layout {
    grid-template-columns: 2.5fr 1fr;
  }
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #e2e8f0;
}

.article-content h1 {
  font-size: 2.2rem;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #fff;
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 36px 0 16px;
  color: #fff;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 8px;
}

.article-content h3 {
  font-size: 1.25rem;
  margin: 24px 0 12px;
  color: var(--accent-gold);
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul, .article-content ol {
  margin: 0 0 22px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

/* Data Tables */
.responsive-table-wrapper {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  background: var(--bg-card);
}

.data-table th {
  background: #141b34;
  color: var(--accent-gold);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: #cbd5e1;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* Author Box */
.author-profile-box {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
  margin: 40px 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

@media (min-width: 576px) {
  .author-profile-box {
    flex-direction: row;
    align-items: center;
  }
}

.author-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-gold);
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 4px;
}

.author-role {
  font-size: 0.85rem;
  color: var(--accent-emerald);
  font-weight: 600;
  margin-bottom: 8px;
}

.author-bio {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Sidebar Widgets */
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 22px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-link-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.sidebar-link-item a:hover {
  color: var(--accent-gold);
  padding-left: 4px;
}

/* FAQ Accordion */
.faq-container {
  margin: 32px 0;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 16px 20px;
  text-align: left;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--accent-gold);
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-item.active .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Breadcrumbs */
.breadcrumbs-nav {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.breadcrumbs-list a {
  color: var(--text-muted);
}

.breadcrumbs-list a:hover {
  color: var(--accent-gold);
}

.breadcrumbs-separator {
  color: var(--text-dim);
}

/* ==========================================================================
   Footer & Sticky Mobile Bar
   ========================================================================== */
.site-footer {
  background: #070913;
  border-top: 1px solid var(--border-light);
  padding: 56px 0 32px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

@media (min-width: 576px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-col h5 {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.footer-compliance-row {
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-compliance-row {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.sticky-mobile-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(10, 13, 26, 0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-light);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 10px;
}

@media (min-width: 992px) {
  .sticky-mobile-bar {
    display: none;
  }
}

.mobile-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
}

.mobile-bar-item.active, .mobile-bar-item:hover {
  color: var(--accent-gold);
}

.mobile-bar-item svg {
  width: 22px;
  height: 22px;
}

.mobile-cta-btn {
  background: linear-gradient(135deg, #ffd700, #ff9100);
  color: #0c0f1d !important;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.85rem;
}