/* ================================================
   4777bet Design System - Emerald Trust Gaming UI
   Original design for Bangladesh market (en-BD)
   ================================================ */

:root {
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-primary-soft: rgba(14,165,233,.12);
  --color-secondary: #8b5cf6;
  --color-accent: #f59e0b;
  --color-bg: #020617;
  --color-bg-soft: #0f172a;
  --color-surface: #111827;
  --color-surface-strong: #1e293b;
  --color-card: linear-gradient(180deg, rgba(17,24,39,.96), rgba(15,23,42,.96));
  --color-card-alt: linear-gradient(135deg, rgba(14,165,233,.08), rgba(139,92,246,.08));
  --color-border: rgba(255,255,255,.08);
  --color-border-strong: rgba(255,255,255,.15);
  --color-text: #e2e8f0;
  --color-text-soft: #94a3b8;
  --color-text-muted: #64748b;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-footer-bg: #020817;
  --color-footer-text: #cbd5e1;
  --gradient-hero: linear-gradient(135deg, rgba(14,165,233,.16), rgba(139,92,246,.18));
  --gradient-hero-soft: linear-gradient(135deg, rgba(14,165,233,.08), rgba(139,92,246,.10));
  --gradient-button: linear-gradient(135deg, #0ea5e9, #8b5cf6);
  --gradient-button-hover: linear-gradient(135deg, #0284c7, #7c3aed);
  --gradient-cta: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
  --gradient-footer: linear-gradient(180deg, #020817, #0a0e1a);
  --shadow-header: 0 2px 20px rgba(0,0,0,.3);
  --shadow-card: 0 8px 32px rgba(14,165,233,.08), 0 4px 16px rgba(139,92,246,.06);
  --shadow-card-hover: 0 16px 48px rgba(14,165,233,.14), 0 8px 24px rgba(139,92,246,.10);
  --shadow-button: 0 4px 16px rgba(14,165,233,.25);
  --shadow-soft: 0 2px 8px rgba(0,0,0,.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --fs-h1: clamp(2rem, 4vw, 3.2rem);
  --fs-h2: clamp(1.5rem, 3vw, 2.2rem);
  --fs-h3: clamp(1.15rem, 2vw, 1.5rem);
  --fs-body: 1.05rem;
  --fs-small: .92rem;
  --fs-nav: clamp(13px, .84vw, 15px);
  --lh-body: 1.8;
  --lh-heading: 1.2;
  --container-max: 1200px;
  --container-narrow: 820px;
  --section-y: clamp(48px, 6vw, 80px);
  --section-y-sm: clamp(32px, 4vw, 56px);
  --gap-sm: 12px;
  --gap-md: 20px;
  --gap-lg: 32px;
  --header-h: 72px;
  --mobile-header-h: 64px;
  --motion-fast: .15s;
  --motion-normal: .3s;
  --motion-slow: .5s;
  --ease-out: cubic-bezier(.16,1,.3,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background:
    radial-gradient(ellipse at 10% 0%, rgba(14,165,233,.12), transparent 40%),
    radial-gradient(ellipse at 90% 0%, rgba(139,92,246,.10), transparent 40%),
    var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: #38bdf8; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* Container */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }

/* ================================================ HEADER ================================================ */
.site-header {
  position: sticky; top: 0; z-index: 1000; width: 100%;
  background: rgba(2,6,23,.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
}

.header-inner {
  width: 100%; max-width: none;
  padding-left: clamp(10px, 1.2vw, 20px);
  padding-right: clamp(10px, 1.2vw, 20px);
  min-height: var(--header-h);
  display: flex; align-items: center;
  gap: clamp(10px, 1vw, 18px);
}

.brand-wrap { flex: 0 0 auto; margin-right: clamp(4px, .8vw, 14px); }

.site-logo {
  display: block; width: auto;
  height: clamp(32px, 3vw, 42px);
  max-width: clamp(118px, 10vw, 168px);
  object-fit: contain;
}

.primary-nav {
  flex: 1 1 auto; min-width: 0;
  display: flex; align-items: center; justify-content: center;
  flex-wrap: nowrap; gap: clamp(4px, .6vw, 12px);
  white-space: nowrap; overflow: visible;
}

.primary-nav a {
  flex: 0 1 auto; min-width: 0;
  padding: 8px clamp(5px, .55vw, 10px);
  font-size: var(--fs-nav); font-weight: 600; line-height: 1;
  color: #dbeafe; white-space: nowrap;
  text-decoration: none; border-radius: var(--radius-sm);
  transition: color var(--motion-fast), background var(--motion-fast);
}
.primary-nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.primary-nav a.active { color: #fff; background: rgba(14,165,233,.15); }

.header-actions {
  flex: 0 0 auto; margin-left: auto;
  display: flex; align-items: center; justify-content: flex-end;
  gap: clamp(6px, .6vw, 10px); white-space: nowrap;
}

.btn-header {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 16px; font-size: .88rem; font-weight: 700;
  border-radius: var(--radius-pill); text-decoration: none;
  transition: all var(--motion-fast);
}
.btn-header-outline { border: 1px solid rgba(255,255,255,.2); color: #fff; background: rgba(255,255,255,.03); }
.btn-header-outline:hover { background: rgba(255,255,255,.08); color: #fff; }
.btn-header-primary { background: var(--gradient-button); color: #fff; border: none; box-shadow: var(--shadow-button); }
.btn-header-primary:hover { opacity: .92; color: #fff; }

.nav-toggle { display: none; }

@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .btn-header { display: none; }
  .nav-toggle {
    display: inline-flex; flex: 0 0 40px; width: 40px; height: 40px;
    align-items: center; justify-content: center;
    background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-sm); cursor: pointer; margin-left: 2px;
  }
  .hamburger-line {
    display: block; width: 20px; height: 2px; background: #fff;
    margin: 3px auto; border-radius: 2px;
    transition: transform var(--motion-normal), opacity var(--motion-normal);
  }
  .header-inner {
    min-height: var(--mobile-header-h);
    padding-left: clamp(8px, 2.4vw, 14px);
    padding-right: clamp(8px, 2.4vw, 14px);
    gap: clamp(6px, 1.8vw, 10px);
  }
  .brand-wrap { flex: 0 1 auto; margin-right: 0; }
  .site-logo { height: clamp(30px, 8vw, 40px); max-width: clamp(104px, 27vw, 138px); }
  .header-actions { margin-left: auto; }
}

@media (max-width: 375px) {
  .header-inner { padding-left: 8px; padding-right: 8px; gap: 6px; }
  .site-logo { max-width: 104px; }
  .nav-toggle { flex-basis: 38px; width: 38px; height: 38px; }
}

/* Mobile Menu */
.mobile-menu {
  position: fixed; top: var(--mobile-header-h); left: 12px; right: 12px;
  z-index: 999; display: none; flex-direction: column;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  max-height: calc(100vh - 80px); overflow-y: auto;
}
.mobile-menu.is-open { display: flex; }
.mobile-nav { display: flex; flex-direction: column; gap: 2px; }
.mobile-nav a {
  display: block; padding: 14px 16px;
  color: #dbeafe; font-weight: 600; font-size: 1rem;
  text-decoration: none; border-radius: var(--radius-sm);
  transition: background var(--motion-fast);
}
.mobile-nav a:hover, .mobile-nav a.active { background: rgba(14,165,233,.12); color: #fff; }
.mobile-actions { display: flex; gap: 10px; padding: 16px 0 4px; }
.btn-mobile {
  flex: 1; display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 16px; font-weight: 700; font-size: .95rem;
  border-radius: var(--radius-pill); text-decoration: none;
}
.btn-mobile-outline { border: 1px solid rgba(255,255,255,.2); color: #fff; background: rgba(255,255,255,.04); }
.btn-mobile-primary { background: var(--gradient-button); color: #fff; border: none; }

/* ================================================ SECTIONS ================================================ */
.section { padding: var(--section-y) 0; }
.section-sm { padding: var(--section-y-sm) 0; }
.section-alt { background: var(--color-bg-soft); }
.section-kicker {
  color: #38bdf8; letter-spacing: .08em; text-transform: uppercase;
  font-weight: 700; font-size: .82rem; margin-bottom: 8px;
}
.section-title { font-size: var(--fs-h2); font-weight: 800; line-height: var(--lh-heading); margin: 0 0 16px; }
.section-lead { color: var(--color-text-soft); font-size: 1.05rem; max-width: 720px; }

/* ================================================ HERO variants ================================================ */
.hero-glow {
  background: var(--gradient-hero); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-card); padding: clamp(24px,4vw,48px);
}
.hero-panel {
  background: var(--gradient-hero-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-card); padding: clamp(24px,4vw,48px);
}
.hero-title { font-size: var(--fs-h1); font-weight: 900; line-height: 1.15; margin: 0 0 20px; }
.hero-lead { font-size: 1.1rem; color: #cbd5e1; line-height: 1.75; margin: 0 0 24px; }

/* ================================================ CARDS ================================================ */
.glass-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-card);
  padding: clamp(20px, 3vw, 40px);
  transition: box-shadow var(--motion-normal), transform var(--motion-normal);
}
.glass-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }

.feature-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px; text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--motion-normal), box-shadow var(--motion-normal);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }

.feature-icon {
  width: 56px; height: 56px; display: inline-flex;
  align-items: center; justify-content: center;
  border-radius: 14px; background: var(--gradient-button);
  color: #fff; font-size: 1.4rem; box-shadow: var(--shadow-button);
  margin-bottom: 16px;
}

.step-card {
  background: rgba(255,255,255,.03); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 20px;
  transition: background var(--motion-fast);
}
.step-card:hover { background: rgba(14,165,233,.06); }
.step-number {
  width: 36px; height: 36px; display: inline-flex;
  align-items: center; justify-content: center;
  background: var(--gradient-button); color: #fff;
  border-radius: 50%; font-weight: 800; font-size: .9rem;
  margin-bottom: 12px;
}

.info-card {
  background: var(--gradient-cta); border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 40px); color: #fff; box-shadow: var(--shadow-card);
}

.trust-card {
  background: rgba(255,255,255,.03); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 20px;
}

.stats-box {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md); padding: 16px; text-align: center;
}
.stats-box strong { display: block; font-size: 1.6rem; color: #fff; }

.testimonial-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-card);
}
.rating i { color: #fbbf24; }

.badge-soft {
  background: rgba(14,165,233,.1); border: 1px solid rgba(14,165,233,.25);
  color: #7dd3fc; border-radius: var(--radius-pill);
  padding: 6px 14px; display: inline-block; font-size: .86rem; margin: 3px;
}

/* ================================================ BUTTONS ================================================ */
.btn-primary-gradient {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; background: var(--gradient-button); color: #fff;
  font-weight: 700; border: none; border-radius: var(--radius-pill);
  box-shadow: var(--shadow-button); cursor: pointer;
  text-decoration: none; font-size: 1rem;
  transition: opacity var(--motion-fast), transform var(--motion-fast);
}
.btn-primary-gradient:hover { opacity: .92; color: #fff; transform: translateY(-1px); }

.btn-outline-light {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border: 1px solid rgba(255,255,255,.2); color: #fff;
  font-weight: 700; border-radius: var(--radius-pill);
  background: rgba(255,255,255,.03); text-decoration: none; font-size: 1rem;
  transition: background var(--motion-fast);
}
.btn-outline-light:hover { background: rgba(255,255,255,.08); color: #fff; }

/* ================================================ CONTENT ================================================ */
.content-img {
  width: 100%; max-width: 960px; display: block; margin: 24px auto;
  border-radius: var(--radius-lg); border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card); height: auto;
}

.prose { max-width: var(--container-narrow); }
.prose p { margin: 0 0 18px; line-height: var(--lh-body); }
.prose h2 { font-size: var(--fs-h2); font-weight: 800; line-height: var(--lh-heading); margin: 36px 0 16px; }
.prose h3 { font-size: var(--fs-h3); font-weight: 700; line-height: 1.3; margin: 28px 0 12px; }
.prose ul, .prose ol { padding-left: 20px; margin: 0 0 18px; }
.prose li { margin-bottom: 8px; }

.highlight-line {
  height: 4px; width: 100px; border-radius: var(--radius-pill);
  background: var(--gradient-button); margin-bottom: 16px;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-md); }
.grid-2-1 { display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--gap-lg); align-items: start; }
.grid-1-2 { display: grid; grid-template-columns: .9fr 1.1fr; gap: var(--gap-lg); align-items: start; }
.grid-7-5 { display: grid; grid-template-columns: 7fr 5fr; gap: var(--gap-lg); align-items: start; }
.grid-8-4 { display: grid; grid-template-columns: 2fr 1fr; gap: var(--gap-lg); align-items: start; }

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .grid-2-1, .grid-1-2, .grid-7-5, .grid-8-4 {
    grid-template-columns: 1fr;
  }
}
@media (min-width: 600px) and (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ================================================ FAQ ================================================ */
.faq-group { margin-bottom: 24px; }
.faq-item {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); margin-bottom: 8px; overflow: hidden;
}
.faq-question {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px; background: none; border: none; color: #fff;
  font-weight: 700; font-size: 1rem; text-align: left; cursor: pointer;
  transition: background var(--motion-fast);
}
.faq-question:hover { background: rgba(14,165,233,.06); }
.faq-question .faq-icon {
  flex-shrink: 0; width: 24px; height: 24px;
  transition: transform var(--motion-normal);
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none; padding: 0 20px 18px; color: var(--color-text-soft); line-height: 1.75;
}
.faq-answer.is-open { display: block; }

/* ================================================ FORMS ================================================ */
.form-card {
  background: var(--color-card); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: clamp(24px, 4vw, 40px);
  box-shadow: var(--shadow-card);
}
.form-group { margin-bottom: 18px; }
.form-label { display: block; margin-bottom: 6px; font-weight: 600; font-size: .92rem; color: #dbeafe; }
.form-input {
  width: 100%; padding: 14px 16px; background: rgba(2,6,23,.5);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  color: #fff; font-size: 1rem; font-family: inherit;
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,.15);
}

/* ================================================ BREADCRUMB ================================================ */
.breadcrumb-nav { padding: 16px 0; }
.breadcrumb-list {
  display: flex; flex-wrap: wrap; gap: 8px; list-style: none;
  padding: 0; margin: 0; font-size: var(--fs-small); color: var(--color-text-muted);
}
.breadcrumb-list li::before { content: "/"; margin-right: 8px; opacity: .4; }
.breadcrumb-list li:first-child::before { display: none; }
.breadcrumb-list a { color: var(--color-text-soft); text-decoration: none; }
.breadcrumb-list a:hover { color: #fff; }

/* ================================================ FOOTER ================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--gradient-footer); padding: 56px 0 0;
}
.footer-inner {
  max-width: var(--container-max); margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 24px);
  display: grid; grid-template-columns: 1.2fr 2.8fr; gap: 48px;
}
.footer-logo { height: 40px; width: auto; margin-bottom: 16px; opacity: .85; }
.footer-desc { color: var(--color-footer-text); font-size: var(--fs-small); line-height: 1.7; margin: 0 0 12px; }
.footer-contact { color: var(--color-text-muted); font-size: var(--fs-small); }
.footer-links {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.footer-col h3 {
  font-size: .88rem; font-weight: 700; color: #fff;
  text-transform: uppercase; letter-spacing: .04em;
  margin: 0 0 14px; padding-bottom: 10px;
  border-bottom: 2px solid rgba(14,165,233,.3);
}
.footer-col a {
  display: block; padding: 5px 0; color: var(--color-footer-text);
  font-size: var(--fs-small); text-decoration: none;
  transition: color var(--motion-fast);
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  margin-top: 40px; padding: 20px clamp(16px, 3vw, 24px);
  border-top: 1px solid var(--color-border); text-align: center;
  color: var(--color-text-muted); font-size: .84rem;
}

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
}

/* ================================================ POLICY PAGES ================================================ */
.policy-layout { max-width: var(--container-narrow); margin: 0 auto; }
.policy-toc {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 20px; margin-bottom: 32px;
}
.policy-toc a { display: block; padding: 6px 0; color: var(--color-primary); font-size: .95rem; }
.policy-note {
  background: rgba(14,165,233,.06); border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px; margin: 24px 0; color: #dbeafe;
}
.policy-warning {
  background: rgba(245,158,11,.08); border-left: 4px solid var(--color-warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px; margin: 24px 0;
}

/* ================================================ AUTH PAGES ================================================ */
.auth-layout {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--gap-lg); align-items: start;
}
@media (max-width: 900px) { .auth-layout { grid-template-columns: 1fr; } }

/* ================================================ ARTICLE ================================================ */
.article-layout {
  display: grid; grid-template-columns: 2.2fr .8fr; gap: var(--gap-lg); align-items: start;
}
.article-body { max-width: none; }
.article-sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
@media (max-width: 900px) { .article-layout { grid-template-columns: 1fr; } .article-sidebar { position: static; } }

/* ================================================ CTA ================================================ */
.cta-section {
  background: var(--gradient-cta); border-radius: var(--radius-xl);
  padding: clamp(32px,5vw,56px); text-align: center; color: #fff;
  box-shadow: var(--shadow-card);
}
.cta-section h2 { color: #fff; }
.cta-section p { color: rgba(255,255,255,.85); max-width: 600px; margin: 0 auto 24px; }

/* ================================================ UTILITY ================================================ */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-soft); }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-3 { margin-bottom: 24px; }
.gap-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* AOS fallback */
[data-aos] { opacity: 1 !important; transform: none !important; }
.aos-init[data-aos] { opacity: 0; transform: translateY(20px); transition: opacity .6s, transform .6s; }
.aos-animate[data-aos] { opacity: 1; transform: none; }

/* Swiper fallback */
.swiper:not(.swiper-initialized) { overflow-x: auto; display: flex; gap: 16px; scroll-snap-type: x mandatory; }
.swiper:not(.swiper-initialized) .swiper-slide { scroll-snap-align: start; flex: 0 0 280px; }

/* Table scroll */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll table { min-width: 600px; }

/* Back to top */
.back-to-top {
  position: fixed; bottom: 80px; right: 20px; z-index: 900;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient-button); color: #fff; border: none;
  display: none; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: var(--shadow-button);
  font-size: 1.2rem;
}
.back-to-top.visible { display: flex; }