:root {
  --color-primary: #1a5276;
  --color-primary-dark: #0e3a5c;
  --color-primary-soft: #2e86c1;
  --color-secondary: #d4ac0d;
  --color-accent: #e74c3c;
  --color-bg: #f4f6f9;
  --color-bg-soft: #eaecf0;
  --color-surface: #ffffff;
  --color-card: #ffffff;
  --color-card-alt: #f8f9fa;
  --color-border: #d5d8dc;
  --color-text: #1c2833;
  --color-text-soft: #566573;
  --color-text-muted: #85929e;
  --color-footer-bg: #0b1929;
  --color-footer-text: #d5d8dc;
  --gradient-hero: linear-gradient(135deg, #1a5276 0%, #2e86c1 50%, #1a5276 100%);
  --gradient-button: linear-gradient(135deg, #d4ac0d 0%, #f1c40f 100%);
  --gradient-cta: linear-gradient(135deg, #1a5276 0%, #2e86c1 100%);
  --shadow-card: 0 2px 12px rgba(0,0,0,.08);
  --shadow-card-hover: 0 8px 28px rgba(0,0,0,.14);
  --shadow-header: 0 2px 8px rgba(0,0,0,.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-card: 12px;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --container-max: 1200px;
  --header-h: 72px;
  --section-y: clamp(48px, 6vw, 80px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-base); background: var(--color-bg); color: var(--color-text); line-height: 1.7; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary-soft); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-primary-dark); }
:focus-visible { outline: 3px solid var(--color-primary-soft); outline-offset: 2px; }

.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: var(--color-surface); 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(6px, .72vw, 14px); white-space: nowrap; overflow: visible; }
.primary-nav .nav-link { flex: 0 1 auto; min-width: 0; padding: 9px clamp(6px, .65vw, 12px); font-size: clamp(13px, .84vw, 15px); line-height: 1; white-space: nowrap; color: var(--color-text); font-weight: 500; border-radius: var(--radius-sm); transition: background .2s, color .2s; }
.primary-nav .nav-link:hover, .primary-nav .nav-link.active { background: var(--color-bg-soft); color: var(--color-primary); }
.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; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 10px 18px; border-radius: var(--radius-sm); font-weight: 600; font-size: 14px; border: none; cursor: pointer; transition: all .2s; text-decoration: none; white-space: nowrap; min-height: 42px; }
.btn-login { background: var(--color-surface); color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-login:hover { background: var(--color-primary); color: #fff; }
.btn-register { background: var(--gradient-button); color: var(--color-primary-dark); font-weight: 700; }
.btn-register:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-primary-cta { background: var(--gradient-cta); color: #fff; padding: 14px 28px; font-size: 16px; border-radius: var(--radius-md); box-shadow: 0 4px 14px rgba(26,82,118,.3); }
.btn-primary-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(26,82,118,.4); color: #fff; }
.btn-secondary-cta { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); padding: 14px 28px; font-size: 16px; border-radius: var(--radius-md); }
.btn-secondary-cta:hover { background: var(--color-primary); color: #fff; }
.nav-toggle { display: none; flex: 0 0 40px; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; border: 1px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer; font-size: 22px; color: var(--color-text); }

/* Mobile Menu */
.mobile-menu { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--color-surface); z-index: 999; overflow-y: auto; padding: 20px; }
.mobile-menu.is-open { display: block; }
.mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav .nav-link { display: block; padding: 14px 16px; font-size: 16px; color: var(--color-text); border-radius: var(--radius-sm); font-weight: 500; }
.mobile-nav .nav-link:hover { background: var(--color-bg-soft); }

@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 { flex-basis: 40px; }
}
@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; }
}

/* ===== BREADCRUMB ===== */
.breadcrumb-nav { background: var(--color-bg-soft); padding: 12px 0; }
.breadcrumb-list { list-style: none; display: flex; gap: 8px; font-size: 14px; max-width: var(--container-max); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); }
.breadcrumb-list li + li::before { content: "/"; margin-right: 8px; color: var(--color-text-muted); }
.bc-current { color: var(--color-text-soft); }

/* ===== SECTIONS ===== */
section { padding: var(--section-y) 0; }
section:nth-child(even) { background: var(--color-bg-soft); }

h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.2; font-weight: 800; margin-bottom: 20px; color: var(--color-primary-dark); }
h2 { font-size: clamp(22px, 3vw, 34px); line-height: 1.25; font-weight: 700; margin-bottom: 16px; color: var(--color-primary-dark); }
h3 { font-size: clamp(18px, 2.2vw, 24px); line-height: 1.3; font-weight: 600; margin-bottom: 12px; }
p { margin-bottom: 16px; line-height: 1.8; }

.content-img { border-radius: var(--radius-lg); box-shadow: var(--shadow-card); margin: 24px 0; }

/* ===== HOME HERO ===== */
.home-hero { background: var(--gradient-hero); color: #fff; padding: clamp(48px, 8vw, 96px) 0; }
.home-hero h1 { color: #fff; }
.home-hero p { color: rgba(255,255,255,.9); }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin: 24px 0; }
.hero-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge-tag { background: rgba(255,255,255,.15); color: #fff; padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 500; border: 1px solid rgba(255,255,255,.2); }
.hero-img { border-radius: var(--radius-lg); box-shadow: 0 8px 32px rgba(0,0,0,.3); }
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* ===== TRUST STRIP ===== */
.home-trust-strip { background: var(--color-primary-dark); color: #fff; padding: 14px 0; }
.trust-items { display: flex; justify-content: center; gap: clamp(16px, 3vw, 40px); flex-wrap: wrap; font-size: 14px; font-weight: 500; }

/* ===== CARDS ===== */
.qa-grid, .category-grid, .gamecat-grid, .payment-grid, .support-grid, .format-grid, .method-grid, .bet-type-grid, .service-grid { display: grid; gap: 24px; }
.qa-grid { grid-template-columns: repeat(3, 1fr); }
.category-grid, .gamecat-grid, .format-grid, .method-grid, .bet-type-grid { grid-template-columns: repeat(3, 1fr); }
.payment-grid, .service-grid { grid-template-columns: repeat(3, 1fr); }
.support-grid { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .qa-grid, .category-grid, .gamecat-grid, .payment-grid, .support-grid, .format-grid, .method-grid, .bet-type-grid, .service-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) and (min-width: 481px) {
  .qa-grid, .category-grid, .gamecat-grid, .payment-grid, .format-grid, .method-grid, .bet-type-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
}

.qa-card, .cat-card, .gamecat-card, .pay-card, .support-card, .format-card, .method-card, .bet-card, .service-card, .basics-card, .help-card, .context-card, .feature-item {
  background: var(--color-card); border-radius: var(--radius-card); padding: clamp(20px, 3vw, 28px); box-shadow: var(--shadow-card); border: 1px solid var(--color-border); transition: transform .25s, box-shadow .25s;
}
.qa-card:hover, .cat-card:hover, .gamecat-card:hover, .pay-card:hover, .support-card:hover, .format-card:hover, .method-card:hover, .bet-card:hover, .service-card:hover, .basics-card:hover, .help-card:hover, .context-card:hover, .feature-item:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-card-hover);
}

.cat-sports { border-left: 4px solid #27ae60; }
.cat-casino { border-left: 4px solid #8e44ad; }
.cat-lottery { border-left: 4px solid #e67e22; }

.pay-icon, .support-card i { font-size: 2rem; color: var(--color-primary); margin-bottom: 12px; display: block; }
.feature-item i { font-size: 2rem; color: var(--color-primary); margin-bottom: 10px; }

/* ===== STEPS ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
.step-card { background: var(--color-card); border-radius: var(--radius-card); padding: 28px 20px; box-shadow: var(--shadow-card); }
.step-num { display: inline-flex; width: 48px; height: 48px; border-radius: 50%; background: var(--gradient-cta); color: #fff; font-size: 1.4rem; font-weight: 700; align-items: center; justify-content: center; margin-bottom: 16px; }
@media (max-width: 768px) { .steps-grid { grid-template-columns: 1fr; } }

.steps-flow { display: flex; flex-direction: column; gap: 20px; }
.step-item { display: flex; gap: 16px; align-items: flex-start; }
.step-badge { flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%; background: var(--gradient-cta); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; }

/* ===== CONTEXT ===== */
.context-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 24px; }
.context-figure { margin-bottom: 16px; }
@media (max-width: 768px) { .context-grid { grid-template-columns: 1fr; } }

/* ===== FEATURE LIST ===== */
.feature-list, .basics-grid, .help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 768px) { .feature-list, .basics-grid, .help-grid { grid-template-columns: 1fr; } }

/* ===== TABLE ===== */
.table-wrap { overflow-x: auto; margin: 16px 0; }
table { width: 100%; border-collapse: collapse; background: var(--color-card); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--color-border); }
th { background: var(--color-primary); color: #fff; font-weight: 600; }
tr:hover { background: var(--color-bg-soft); }

/* ===== SECURITY PANEL ===== */
.security-panel, .privacy-note-panel { background: var(--color-card); border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 40px); border-left: 4px solid var(--color-primary); box-shadow: var(--shadow-card); }

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-card); border-radius: var(--radius-md); border: 1px solid var(--color-border); overflow: hidden; }
.faq-toggle { display: flex; width: 100%; justify-content: space-between; align-items: center; padding: 18px 20px; background: none; border: none; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--color-text); text-align: left; gap: 12px; font-family: var(--font-base); }
.faq-toggle span { flex: 1; }
.faq-toggle i { transition: transform .3s; flex: 0 0 auto; }
.faq-toggle[aria-expanded="true"] i { transform: rotate(180deg); }
.faq-answer { display: none; padding: 0 20px 18px; }
.faq-answer.is-open { display: block; }

/* ===== AUTH PAGES ===== */
.auth-layout, .register-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 768px) { .auth-layout, .register-layout { grid-template-columns: 1fr; } }
.auth-form-card, .register-form-card { background: var(--color-card); border-radius: var(--radius-lg); padding: clamp(24px, 4vw, 40px); box-shadow: var(--shadow-card); border: 1px solid var(--color-border); }
.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); }
.form-group input { padding: 12px 16px; border: 2px solid var(--color-border); border-radius: var(--radius-sm); font-size: 15px; font-family: var(--font-base); transition: border-color .2s; }
.form-group input:focus { border-color: var(--color-primary-soft); outline: none; }
.form-submit-btn { margin-top: 8px; text-align: center; }
.form-help, .form-terms { font-size: 13px; color: var(--color-text-soft); margin-top: 8px; }
.trust-info { margin-top: 20px; }
.benefit-list ul { list-style: none; padding: 0; }
.benefit-list li { padding: 10px 0; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid var(--color-border); }
.benefit-list i { color: var(--color-primary); }

/* Register Steps */
.reg-step-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.reg-step { text-align: center; background: var(--color-card); border-radius: var(--radius-card); padding: 24px 16px; box-shadow: var(--shadow-card); }
@media (max-width: 768px) { .reg-step-flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .reg-step-flow { grid-template-columns: 1fr; } }

/* ===== POLICY PAGES ===== */
.policy-layout { max-width: 820px; }
.policy-layout h2 { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--color-border); }
.policy-layout h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.policy-updated { color: var(--color-text-muted); font-size: 14px; margin-bottom: 20px; }
.tips-list, .safety-tips, .strategy-list { padding-left: 20px; margin: 16px 0; }
.tips-list li, .safety-tips li, .strategy-list li { margin-bottom: 10px; line-height: 1.7; }

/* ===== CTA SECTIONS ===== */
.home-final-cta, .about-cta { background: var(--gradient-cta); color: #fff; text-align: center; }
.home-final-cta h2, .about-cta h2 { color: #fff; }
.home-final-cta p, .about-cta p { color: rgba(255,255,255,.9); }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.page-cta, .page-cta-alt { background: var(--color-bg-soft); padding: 24px; border-radius: var(--radius-lg); margin-top: 28px; text-align: center; border: 1px dashed var(--color-border); }

/* ===== ERROR ===== */
.error-section { text-align: center; padding: 80px 0; }
.error-actions { display: flex; gap: 16px; justify-content: center; margin: 24px 0; flex-wrap: wrap; }
.error-links { list-style: none; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding: clamp(40px, 6vw, 72px) 0 24px; }
.footer-inner { max-width: var(--container-max); margin: 0 auto; padding: 0 clamp(16px, 3vw, 24px); display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; }
.footer-brand h3 { color: #fff; font-size: 18px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: var(--color-footer-text); }
.footer-contact { color: var(--color-secondary); font-weight: 600; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 12px; font-weight: 600; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--color-footer-text); font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--color-secondary); }
.footer-bottom { grid-column: 1 / -1; text-align: center; padding-top: 24px; margin-top: 24px; border-top: 1px solid rgba(255,255,255,.1); font-size: 13px; color: var(--color-text-muted); }
@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===== PRINT ===== */
@media print { .site-header, .site-footer, .nav-toggle, .mobile-menu { display: none; } }