/* 6777bet Design System - Emerald Trust Gaming UI */
:root {
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-primary-soft: #d1fae5;
  --color-secondary: #1e293b;
  --color-accent: #f59e0b;
  --color-bg: #f0fdf4;
  --color-bg-soft: #f8fffe;
  --color-surface: #ffffff;
  --color-surface-strong: #ecfdf5;
  --color-card: #ffffff;
  --color-card-alt: #f0fdf4;
  --color-border: #a7f3d0;
  --color-border-strong: #6ee7b7;
  --color-text: #0f172a;
  --color-text-soft: #334155;
  --color-text-muted: #64748b;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-footer-bg: #0f172a;
  --color-footer-text: #cbd5e1;
  --gradient-hero: linear-gradient(135deg, #064e3b 0%, #065f46 40%, #047857 100%);
  --gradient-button: linear-gradient(135deg, #10b981, #059669);
  --gradient-cta: linear-gradient(135deg, #065f46 0%, #064e3b 100%);
  --shadow-header: 0 2px 20px rgba(0,0,0,.08);
  --shadow-card: 0 4px 24px rgba(16,185,129,.08);
  --shadow-card-hover: 0 8px 32px rgba(16,185,129,.16);
  --shadow-soft: 0 2px 8px rgba(0,0,0,.04);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --motion-fast: .15s;
  --motion-normal: .3s;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --fs-h1: clamp(28px, 4vw, 48px);
  --fs-h2: clamp(22px, 3vw, 36px);
  --fs-h3: clamp(18px, 2vw, 24px);
  --fs-body: 17px;
  --lh-body: 1.85;
  --container-max: 1200px;
  --section-y: clamp(48px, 6vw, 80px);
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-base); background: var(--color-bg); color: var(--color-text); line-height: var(--lh-body); font-size: var(--fs-body); overflow-x: hidden; }
a { color: var(--color-primary-dark); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: var(--color-primary); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { margin: 0 0 .75em; line-height: 1.25; color: var(--color-secondary); }
h1 { font-size: var(--fs-h1); font-weight: 800; }
h2 { font-size: var(--fs-h2); font-weight: 700; }
h3 { font-size: var(--fs-h3); font-weight: 600; }
p { margin: 0 0 1.1em; }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }

/* ===== HEADER ===== */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.97); backdrop-filter: blur(12px); 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, .5vw, 10px); font-size: clamp(12.5px, .8vw, 14.5px); line-height: 1; white-space: nowrap; color: var(--color-text-soft); font-weight: 600; border-radius: var(--radius-sm); transition: all var(--motion-fast); }
.primary-nav a:hover { color: var(--color-primary-dark); background: var(--color-primary-soft); }
.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 { display: inline-flex; align-items: center; justify-content: center; padding: 10px 18px; border-radius: var(--radius-pill); font-weight: 700; font-size: 14px; white-space: nowrap; text-decoration: none; transition: all var(--motion-fast); cursor: pointer; border: none; min-height: 42px; }
.btn-login { background: transparent; color: var(--color-primary-dark); border: 2px solid var(--color-primary); }
.btn-login:hover { background: var(--color-primary-soft); color: var(--color-primary-dark); }
.btn-register { background: var(--gradient-button); color: #fff; box-shadow: 0 2px 8px rgba(16,185,129,.3); }
.btn-register:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(16,185,129,.4); color: #fff; }
.btn-primary-lg { background: var(--gradient-button); color: #fff; padding: 14px 28px; font-size: 16px; border-radius: var(--radius-pill); box-shadow: 0 4px 16px rgba(16,185,129,.25); }
.btn-primary-lg:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(16,185,129,.35); color: #fff; }
.btn-outline-lg { background: transparent; color: var(--color-primary-dark); border: 2px solid var(--color-primary); padding: 12px 26px; font-size: 16px; border-radius: var(--radius-pill); }
.btn-outline-lg:hover { background: var(--color-primary-soft); }
.btn-full { width: 100%; justify-content: center; }
.nav-toggle { display: none; flex: 0 0 40px; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; border: none; cursor: pointer; padding: 8px; border-radius: var(--radius-sm); }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); margin: 3px auto; transition: all var(--motion-normal); border-radius: 2px; }
.mobile-menu { display: none; }
.mobile-menu.is-open { display: block; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--color-surface); border-top: 1px solid var(--color-border); box-shadow: 0 8px 32px rgba(0,0,0,.1); max-height: calc(100vh - var(--header-h)); overflow-y: auto; z-index: 999; }
.mobile-menu-inner { padding: 16px; display: flex; flex-direction: column; gap: 4px; }
.mobile-menu-inner a { padding: 14px 16px; font-size: 16px; font-weight: 600; color: var(--color-text); border-radius: var(--radius-sm); }
.mobile-menu-inner a:hover { background: var(--color-primary-soft); color: var(--color-primary-dark); }

@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-inner { padding-left: clamp(8px, 2.4vw, 14px); padding-right: clamp(8px, 2.4vw, 14px); justify-content: flex-start; 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; gap: clamp(5px, 1.6vw, 8px); }
  .header-actions .btn { min-height: 40px; padding-inline: clamp(10px, 2.6vw, 14px); font-size: clamp(12px, 3.2vw, 14px); }
  .nav-toggle { margin-left: 2px; }
}
@media (max-width: 375px) {
  .header-inner { padding-left: 8px; padding-right: 8px; gap: 6px; }
  .site-logo { max-width: 104px; }
  .header-actions .btn { min-height: 38px; padding-inline: 9px; font-size: 12px; }
  .nav-toggle { flex-basis: 38px; width: 38px; height: 38px; }
}

/* ===== SECTIONS ===== */
section { padding: var(--section-y) 0; }
.section-alt { background: var(--color-surface-strong); }
.section-header { text-align: center; margin-bottom: 40px; }
.section-badge, .page-badge, .hero-badge { display: inline-block; background: var(--color-primary-soft); color: var(--color-primary-dark); padding: 6px 16px; border-radius: var(--radius-pill); font-size: 14px; font-weight: 700; margin-bottom: 12px; border: 1px solid var(--color-border-strong); }

/* ===== HERO ===== */
.home-hero { background: var(--gradient-hero); color: #fff; padding: clamp(80px, 10vw, 120px) 0 clamp(60px, 8vw, 100px); }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero-content h1 { color: #fff; font-size: clamp(26px, 3.5vw, 44px); }
.hero-lead { font-size: clamp(15px, 1.8vw, 18px); opacity: .92; line-height: 1.8; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.hero-cta .btn-outline-lg { color: #fff; border-color: rgba(255,255,255,.5); }
.hero-cta .btn-outline-lg:hover { background: rgba(255,255,255,.12); }
.hero-card { background: rgba(255,255,255,.1); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,.15); border-radius: var(--radius-lg); padding: 28px; }
.hero-card h2 { color: #fff; font-size: 22px; }
.hero-card li { padding: 6px 0; opacity: .9; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .home-hero { padding: 60px 0 48px; }
}

/* ===== CONTENT SPLITS ===== */
.content-split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; }
.content-split.reverse { grid-template-columns: .9fr 1.1fr; }
.content-split.reverse .content-visual { order: -1; }
.content-text { max-width: 680px; }
.prose-wide { max-width: 820px; margin: 0 auto; }
@media (max-width: 900px) {
  .content-split, .content-split.reverse { grid-template-columns: 1fr; }
  .content-split.reverse .content-visual { order: 0; }
}

/* ===== FEATURE/GUIDE/STEP CARDS ===== */
.feature-grid, .guide-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.feature-card, .guide-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px; transition: all var(--motion-normal); }
.feature-card:hover, .guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--color-primary); }
.feature-num, .guide-num { width: 44px; height: 44px; border-radius: 12px; background: var(--color-primary-soft); color: var(--color-primary-dark); display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px; font-size: 14px; }
.step-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.step-card { background: linear-gradient(180deg, #fff, var(--color-bg-soft)); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px; }
.step-num { width: 44px; height: 44px; border-radius: 50%; background: var(--gradient-button); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px; }
.step-flow { display: flex; flex-direction: column; gap: 20px; }
.step-item { display: flex; gap: 20px; align-items: flex-start; background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px; }
.step-marker { flex: 0 0 48px; width: 48px; height: 48px; border-radius: 50%; background: var(--gradient-button); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px; }
.step-content h3 { margin-bottom: 8px; }

/* ===== NOTICE CARD ===== */
.notice-card { background: var(--color-card); border: 1px solid var(--color-border); border-left: 5px solid var(--color-primary); border-radius: var(--radius-md); padding: 24px 28px; }
.highlight-box { background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark)); color: #fff; border-radius: var(--radius-md); padding: 18px 22px; margin-top: 18px; font-weight: 600; }

/* ===== TABLE ===== */
.table-scroll { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); background: var(--color-card); }
table { width: 100%; border-collapse: collapse; }
thead th { background: var(--color-primary-soft); color: var(--color-secondary); padding: 14px 16px; font-weight: 700; text-align: left; }
tbody td { padding: 12px 16px; border-top: 1px solid var(--color-border); }

/* ===== TESTIMONIALS ===== */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.testimonial-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 24px; }
.stars { color: var(--color-accent); letter-spacing: 2px; font-size: 18px; margin-bottom: 12px; }
.testimonial-card h3 { font-size: 16px; margin-bottom: 4px; }
.testimonial-card span { font-size: 13px; color: var(--color-text-muted); }

/* ===== GALLERY ===== */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 768px) { .gallery-grid { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.faq-trigger { width: 100%; padding: 18px 22px; background: none; border: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-size: 16px; font-weight: 600; color: var(--color-text); text-align: left; font-family: inherit; transition: background var(--motion-fast); }
.faq-trigger:hover { background: var(--color-primary-soft); }
.faq-icon { font-size: 22px; font-weight: 300; color: var(--color-primary); transition: transform var(--motion-normal); flex-shrink: 0; margin-left: 12px; }
.faq-trigger[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 22px 18px; color: var(--color-text-soft); line-height: 1.8; }
.faq-answer p { margin: 0; }
.faq-trigger[aria-expanded="true"] + .faq-answer { display: block; }

/* ===== CTA BOX ===== */
.cta-box { background: var(--gradient-cta); color: #fff; border-radius: var(--radius-xl); padding: clamp(32px, 5vw, 56px); text-align: center; }
.cta-box h2 { color: #fff; }
.cta-box p { opacity: .92; max-width: 600px; margin: 0 auto 24px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.cta-actions .btn-outline-lg { color: #fff; border-color: rgba(255,255,255,.5); }
.cta-trust { margin-top: 18px; font-size: 13px; opacity: .7; }
.cta-trust a { color: #a7f3d0; }

/* ===== BREADCRUMB ===== */
.breadcrumb { margin-bottom: 20px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; font-size: 14px; color: var(--color-text-muted); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; opacity: .5; }
.breadcrumb a { color: var(--color-primary-dark); }

/* ===== AUTH PAGES ===== */
.auth-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.auth-form-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 36px; box-shadow: var(--shadow-card); }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; font-size: 14px; color: var(--color-text-soft); }
.form-group input { padding: 12px 16px; border: 2px solid var(--color-border); border-radius: var(--radius-sm); font-size: 16px; font-family: inherit; transition: border-color var(--motion-fast); outline: none; }
.form-group input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-soft); }
.auth-trust { margin-top: 16px; font-size: 13px; color: var(--color-text-muted); text-align: center; }
.auth-info { display: flex; flex-direction: column; gap: 20px; }
.auth-security-note { background: var(--color-surface-strong); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 20px; }
.benefit-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.benefit-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 20px; }
@media (max-width: 900px) { .auth-layout { grid-template-columns: 1fr; } }

/* ===== CATEGORY PAGES ===== */
.opener-split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; align-items: center; }
.opener-lead { font-size: clamp(15px, 1.6vw, 17px); color: var(--color-text-soft); line-height: 1.85; }
.opener-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.toc-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 28px; }
.toc-list { padding-left: 20px; }
.toc-list li { padding: 6px 0; list-style: disc; color: var(--color-text-soft); }
.features-note { margin-top: 20px; background: var(--color-primary-soft); border-radius: var(--radius-md); padding: 16px 20px; }
.safety-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; align-items: start; }
.safety-main ul { padding-left: 20px; }
.safety-main li { padding: 6px 0; list-style: disc; }
.related-list { padding-left: 20px; }
.related-list li { padding: 8px 0; list-style: disc; }
@media (max-width: 900px) {
  .opener-split, .safety-grid { grid-template-columns: 1fr; }
}

/* ===== PROMO PAGES ===== */
.promo-header-split { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.overview-grid, .tips-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.overview-card, .tip-card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 24px; }
@media (max-width: 768px) { .promo-header-split { grid-template-columns: 1fr; } }

/* ===== POLICY PAGES ===== */
.policy-opener { background: var(--color-surface-strong); }
.policy-meta { font-size: 14px; color: var(--color-text-muted); margin-top: 12px; }
.policy-section ul { padding-left: 20px; margin: 12px 0; }
.policy-section li { padding: 6px 0; list-style: disc; }
.policy-visual { margin: 24px 0; }

/* ===== 404 ===== */
.error-section { text-align: center; padding: clamp(80px, 12vw, 160px) 0; }
.error-content h1 { font-size: clamp(60px, 12vw, 120px); color: var(--color-primary); margin-bottom: 8px; }
.error-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 28px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding: clamp(48px, 6vw, 72px) 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 36px; }
.footer-brand h2 { color: #fff; margin-bottom: 12px; }
.footer-col h3 { color: #e2e8f0; font-size: 16px; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col a { color: var(--color-footer-text); font-size: 14px; }
.footer-col a:hover { color: var(--color-primary); }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; } }

/* ===== FOCUS & A11Y ===== */
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }

/* ===== AOS FALLBACK ===== */
[data-aos] { opacity: 1 !important; transform: none !important; }
.aos-animate[data-aos] { opacity: 1; }

/* ===== RESPONSIVE FINE-TUNE ===== */
@media (max-width: 414px) {
  :root { --section-y: 36px; --fs-body: 15.5px; }
  .feature-grid, .guide-grid, .step-grid, .benefit-grid, .overview-grid, .tips-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
}
@media (max-width: 375px) {
  body { font-size: 15px; }
  .cta-box { padding: 24px 18px; }
  .step-item { flex-direction: column; gap: 12px; }
}