/* === Emerald Trust Gaming UI - Design System === */
:root {
    --color-primary: #0ea5e9;
    --color-primary-dark: #0284c7;
    --color-primary-soft: #e0f2fe;
    --color-secondary: #1e293b;
    --color-accent: #f59e0b;
    --color-bg: #f0f9ff;
    --color-bg-soft: #e0f2fe;
    --color-surface: #ffffff;
    --color-card: #ffffff;
    --color-card-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-text-soft: #475569;
    --color-text-muted: #94a3b8;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-footer-bg: #0f172a;
    --color-footer-text: #94a3b8;
    --gradient-hero: linear-gradient(135deg, #1e293b 0%, #0f172a 60%, #0c1525 100%);
    --gradient-cta: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-card-hover: 0 12px 36px rgba(14,165,233,0.15);
    --shadow-header: 0 2px 16px rgba(0,0,0,0.08);
    --shadow-button: 0 4px 12px rgba(14,165,233,0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-pill: 50px;
    --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, 26px);
    --fs-body: 17px;
    --fs-small: 14px;
    --lh-body: 1.85;
    --lh-heading: 1.3;
    --section-y: 72px;
    --section-y-sm: 48px;
    --container-max: 1200px;
    --container-narrow: 860px;
    --container-wide: 1100px;
    --header-h: 72px;
    --mobile-header-h: 64px;
    --motion-normal: 0.3s;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    margin: 0; padding: 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;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--motion-normal); }
a:hover { color: var(--color-primary-dark); }
h1, h2, h3, h4 { line-height: var(--lh-heading); margin: 0 0 18px; color: var(--color-secondary); }
h1 { font-size: var(--fs-h1); font-weight: 700; }
h2 { font-size: var(--fs-h2); font-weight: 700; }
h3 { font-size: var(--fs-h3); font-weight: 600; }
p { margin: 0 0 18px; }
ul { padding-left: 20px; }

:focus-visible { outline: 3px 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; }
}

/* === Containers === */
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: var(--container-wide); margin: 0 auto; padding: 0 20px; }
.content-section { padding: var(--section-y) 0; }
.alt-bg { background: var(--color-surface); }

/* === HEADER === */
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: var(--color-secondary);
    box-shadow: var(--shadow-header);
    width: 100%;
}
.site-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 a {
    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: #e2e8f0; font-weight: 500;
    transition: color var(--motion-normal), background var(--motion-normal);
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.primary-nav a:hover { color: var(--color-primary); }
.primary-nav a.active { color: var(--color-primary); background: rgba(14,165,233,0.1); }
.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; border: none; cursor: pointer; font-weight: 600; text-decoration: none; transition: all var(--motion-normal); font-family: inherit; }
.btn-login {
    min-height: 40px; padding: 0 16px;
    background: transparent; color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-pill); font-size: 14px;
}
.btn-login:hover { background: var(--color-primary); color: #fff; }
.btn-register {
    min-height: 40px; padding: 0 18px;
    background: var(--color-primary); color: #fff;
    border-radius: var(--radius-pill); font-size: 14px;
    box-shadow: var(--shadow-button);
}
.btn-register:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.nav-toggle {
    display: none; flex: 0 0 40px; width: 40px; height: 40px;
    align-items: center; justify-content: center;
    background: transparent; border: 2px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-sm); cursor: pointer; padding: 0;
    flex-direction: column; gap: 5px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: #e2e8f0; border-radius: 2px; transition: all var(--motion-normal); }

/* Mobile Menu */
.mobile-menu { display: none; position: fixed; top: var(--mobile-header-h); left: 0; right: 0; bottom: 0; background: var(--color-secondary); z-index: 999; overflow-y: auto; padding: 20px; }
.mobile-menu.is-open { display: block; }
.mobile-menu-inner { display: flex; flex-direction: column; gap: 0; }
.mobile-menu a { display: block; padding: 14px 12px; color: #e2e8f0; font-size: 16px; border-bottom: 1px solid rgba(255,255,255,0.06); text-decoration: none; }
.mobile-menu a:hover { color: var(--color-primary); }
.mobile-menu-actions { display: flex; gap: 10px; margin-top: 20px; padding: 12px 0; }
.mobile-menu-actions .btn { flex: 1; justify-content: center; min-height: 44px; }

@media (max-width: 1180px) {
    .site-header .header-inner {
        width: 100%; max-width: none;
        padding-left: clamp(8px, 2.4vw, 14px);
        padding-right: clamp(8px, 2.4vw, 14px);
        min-height: var(--mobile-header-h);
        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); }
    .primary-nav { display: none; }
    .header-actions {
        margin-left: auto; flex: 0 0 auto;
        display: flex; align-items: center; justify-content: flex-end;
        gap: clamp(5px, 1.6vw, 8px); white-space: nowrap;
    }
    .header-actions .btn { min-height: 40px; padding-inline: clamp(10px, 2.6vw, 14px); font-size: clamp(12px, 3.2vw, 14px); }
    .nav-toggle { display: inline-flex; flex: 0 0 40px; width: 40px; height: 40px; margin-left: 2px; }
}

@media (max-width: 375px) {
    .site-header .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 { padding: 14px 0; background: var(--color-surface); border-bottom: 1px solid var(--color-border); font-size: var(--fs-small); }
.breadcrumb-nav a { color: var(--color-primary); }
.breadcrumb-nav span { color: var(--color-text-muted); margin: 0 6px; }

/* === HERO === */
.home-hero { background: var(--gradient-hero); padding: 80px 0 60px; color: #fff; }
.hero-container { max-width: var(--container-wide); margin: 0 auto; padding: 0 20px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero-content h1 { color: var(--color-primary); font-size: var(--fs-h1); margin-bottom: 20px; }
.hero-lead { font-size: 1.15rem; color: #cbd5e1; margin-bottom: 28px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 24px; flex-wrap: wrap; }
.btn-hero-primary { background: var(--color-primary); color: #fff; padding: 14px 32px; border-radius: var(--radius-pill); font-size: 1rem; font-weight: 600; box-shadow: var(--shadow-button); }
.btn-hero-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); color: #fff; }
.btn-hero-secondary { background: transparent; color: #cbd5e1; padding: 14px 28px; border: 2px solid rgba(255,255,255,0.2); border-radius: var(--radius-pill); font-size: 1rem; }
.btn-hero-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.hero-trust { display: flex; gap: 18px; flex-wrap: wrap; font-size: var(--fs-small); color: var(--color-text-muted); }
.hero-visual-wrap { display: flex; align-items: center; justify-content: center; }
.hero-visual { border-radius: var(--radius-lg); box-shadow: 0 20px 60px rgba(0,0,0,0.3); }

@media (max-width: 900px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-actions { justify-content: center; }
    .hero-trust { justify-content: center; }
    .hero-visual-wrap { order: -1; }
    .home-hero { padding: 48px 0 40px; }
}

/* === FEATURE GRID === */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px; }
.feature-card {
    background: var(--color-card); padding: 28px; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card); border-top: 4px solid var(--color-primary);
    transition: all var(--motion-normal) var(--ease-out);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); }
.feature-icon { font-size: 2.4rem; color: var(--color-primary); margin-bottom: 16px; }
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { color: var(--color-text-soft); font-size: 15px; margin: 0; line-height: 1.7; }

@media (max-width: 900px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: 1fr; } }

/* === CTA SECTIONS === */
.home-cta-band, .game-bottom-cta, .about-cta { background: var(--gradient-cta); padding: 72px 0; text-align: center; color: #fff; }
.cta-container { max-width: 700px; margin: 0 auto; padding: 0 20px; }
.cta-container h2 { color: #fff; margin-bottom: 16px; }
.cta-container p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 28px; }
.btn-cta-primary { background: var(--color-secondary); color: #fff; padding: 14px 36px; border-radius: var(--radius-pill); font-size: 1rem; font-weight: 600; }
.btn-cta-primary:hover { background: #0f172a; transform: translateY(-2px); color: #fff; box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.btn-cta-secondary { background: transparent; color: var(--color-primary); padding: 14px 28px; border: 2px solid var(--color-primary); border-radius: var(--radius-pill); font-size: 1rem; }
.btn-cta-secondary:hover { background: var(--color-primary); color: #fff; }
.final-cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* === TABLE === */
.table-scroll { overflow-x: auto; margin: 24px 0; border-radius: var(--radius-md); box-shadow: var(--shadow-card); }
.data-table { width: 100%; border-collapse: collapse; background: var(--color-card); }
.data-table th { background: var(--color-secondary); color: #fff; padding: 16px 20px; font-weight: 600; text-align: left; white-space: nowrap; }
.data-table td { padding: 14px 20px; border-bottom: 1px solid var(--color-border); }
.data-table tr:hover { background: var(--color-primary-soft); }

/* === FAQ === */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-card); border-radius: var(--radius-md); box-shadow: var(--shadow-card); overflow: hidden; border-left: 4px solid var(--color-primary); }
.faq-trigger {
    display: flex; align-items: center; justify-content: space-between; width: 100%;
    padding: 18px 20px; background: none; border: none; cursor: pointer;
    font-size: 1rem; font-weight: 600; color: var(--color-secondary);
    text-align: left; font-family: inherit; gap: 12px;
}
.faq-trigger:hover { color: var(--color-primary); }
.faq-icon { font-size: 1.4rem; font-weight: 700; color: var(--color-primary); transition: transform var(--motion-normal); flex-shrink: 0; }
.faq-item.is-open .faq-icon { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 20px 18px; color: var(--color-text-soft); line-height: 1.8; }
.faq-item.is-open .faq-answer { display: block; }

/* === CONTENT IMAGE === */
.content-image { width: 100%; max-width: 800px; margin: 28px auto; border-radius: var(--radius-md); box-shadow: var(--shadow-card); }

/* === GAME PAGE === */
.game-intro-section { padding: var(--section-y) 0; }
.game-lead { font-size: 1.1rem; color: var(--color-text-soft); margin-bottom: 24px; }
.game-features-wrap { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 24px 0; }
.game-feature-item { background: var(--color-card); padding: 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-card); border-left: 4px solid var(--color-accent); }
.gf-icon { color: var(--color-accent); font-size: 1.2rem; margin-right: 8px; }
.section-note { color: var(--color-text-soft); font-style: italic; margin-top: 20px; }

/* Step Flow */
.step-flow { display: flex; flex-direction: column; gap: 20px; margin: 24px 0; }
.step-item { display: flex; gap: 18px; align-items: flex-start; background: var(--color-card); padding: 20px; border-radius: var(--radius-md); box-shadow: var(--shadow-card); }
.step-num { flex-shrink: 0; width: 40px; height: 40px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; }
.step-item h3 { margin-bottom: 6px; font-size: 1rem; }
.step-item p { margin: 0; color: var(--color-text-soft); font-size: 15px; }

/* Timeline */
.timeline-list { border-left: 3px solid var(--color-primary); padding-left: 28px; margin: 24px 0; }
.timeline-item { position: relative; padding-bottom: 24px; }
.tl-marker { position: absolute; left: -40px; width: 24px; height: 24px; background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; }
.tl-content h3 { margin-bottom: 6px; }
.tl-content p { color: var(--color-text-soft); margin: 0; }

/* Showcase */
.showcase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin: 24px 0; }
@media (max-width: 768px) { .showcase-grid { grid-template-columns: 1fr; } }

/* Rules */
.rules-list { display: flex; flex-direction: column; gap: 16px; }
.rule-item { background: var(--color-card); padding: 20px; border-radius: var(--radius-md); box-shadow: var(--shadow-card); }
.rule-item h3 { margin-bottom: 8px; color: var(--color-primary-dark); }

/* Related Links */
.related-links { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin: 16px 0; }
.related-card { display: flex; align-items: center; justify-content: center; padding: 16px; background: var(--color-card); border-radius: var(--radius-md); box-shadow: var(--shadow-card); color: var(--color-secondary); font-weight: 600; transition: all var(--motion-normal); }
.related-card:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-item { background: var(--color-card); padding: 24px; border-radius: var(--radius-md); text-align: center; box-shadow: var(--shadow-card); }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { color: var(--color-text-soft); font-size: var(--fs-small); margin-top: 6px; }
@media (max-width: 600px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } .game-features-wrap { grid-template-columns: 1fr; } }

/* Tips */
.tips-list { list-style: none; padding: 0; }
.tips-list li { padding: 12px 0; border-bottom: 1px solid var(--color-border); line-height: 1.7; }

/* Warning */
.warning-list li { padding: 8px 0; color: var(--color-text-soft); }

/* Info Panel */
.info-panel { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
@media (max-width: 600px) { .info-panel { grid-template-columns: 1fr; } }

/* === AUTH PAGES === */
.auth-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }
@media (max-width: 900px) { .auth-layout { grid-template-columns: 1fr; } }
.auth-form-card { background: var(--color-card); padding: 36px; border-radius: var(--radius-lg); box-shadow: var(--shadow-card); }
.auth-form-card h1 { font-size: var(--fs-h2); }
.auth-lead { color: var(--color-text-soft); margin-bottom: 24px; }
.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: var(--fs-small); color: var(--color-secondary); }
.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-normal);
    background: var(--color-bg-soft);
}
.form-group input:focus { border-color: var(--color-primary); outline: none; background: #fff; }
.btn-form-submit { background: var(--color-primary); color: #fff; padding: 14px 24px; border-radius: var(--radius-pill); font-size: 1rem; font-weight: 600; border: none; cursor: pointer; min-height: 48px; }
.btn-form-submit:hover { background: var(--color-primary-dark); }
.auth-switch { text-align: center; color: var(--color-text-soft); font-size: var(--fs-small); margin-top: 8px; }
.auth-info-panel { display: flex; flex-direction: column; gap: 20px; }
.auth-trust-card, .auth-security-note, .auth-step-list { background: var(--color-card-alt); padding: 24px; border-radius: var(--radius-md); }
.auth-trust-card h3, .auth-security-note h3, .auth-step-list h3 { font-size: 1rem; margin-bottom: 12px; }
.auth-trust-card ul, .auth-step-list ul { padding-left: 18px; color: var(--color-text-soft); }
.auth-trust-card li, .auth-step-list li { padding: 4px 0; }

/* === POLICY PAGES === */
.policy-layout h1 { font-size: var(--fs-h1); margin-bottom: 12px; }
.policy-updated { color: var(--color-text-muted); font-size: var(--fs-small); margin-bottom: 28px; }
.policy-toc { background: var(--color-primary-soft); padding: 20px 24px; border-radius: var(--radius-md); margin-bottom: 32px; }
.policy-toc h3 { margin-bottom: 10px; font-size: 1rem; }
.policy-toc ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 16px; }
.policy-toc li { color: var(--color-primary-dark); font-size: var(--fs-small); }
.policy-note { background: var(--color-accent); color: #fff; padding: 16px 20px; border-radius: var(--radius-sm); margin-bottom: 28px; }

/* === FOOTER === */
.site-footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding: 56px 0 24px; }
.footer-inner { max-width: var(--container-wide); margin: 0 auto; padding: 0 20px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
.footer-brand p { font-size: var(--fs-small); line-height: 1.7; margin-top: 14px; color: var(--color-footer-text); }
.footer-email { color: var(--color-primary); font-size: var(--fs-small); }
.footer-col h4 { color: #e2e8f0; font-size: 1rem; margin-bottom: 14px; }
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { padding: 4px 0; }
.footer-col a { color: var(--color-footer-text); font-size: var(--fs-small); transition: color var(--motion-normal); text-decoration: none; }
.footer-col a:hover { color: var(--color-primary); }
.footer-trust { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }
.trust-badge { display: inline-block; padding: 6px 12px; background: rgba(255,255,255,0.05); border-radius: var(--radius-sm); font-size: 12px; color: var(--color-primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; font-size: var(--fs-small); }
.footer-bottom p { margin-bottom: 6px; }

@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .footer-grid { grid-template-columns: 1fr; } }

/* === 404 === */
.error-section h1 { font-size: var(--fs-h1); color: var(--color-primary); }

/* === AOS Fallback === */
[data-aos] { opacity: 1 !important; transform: none !important; }
.aos-init[data-aos] { opacity: 0; }
.aos-animate[data-aos] { opacity: 1; }

/* === Swiper Fallback (not used but safe) === */
.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-shrink: 0; }

/* === Mobile Final Checks === */
@media (max-width: 414px) {
    .content-section { padding: var(--section-y-sm) 0; }
    .home-hero { padding: 36px 0 28px; }
    .feature-card { padding: 20px; }
    .step-item { flex-direction: column; align-items: center; text-align: center; }
}