/* ═══════════════════════════════════════════
   tk3666.asia — Emerald Trust Gaming UI
   Design System: Dark premium with purple/lime
   ═══════════════════════════════════════════ */

:root {
  --color-primary: #7c3aed;
  --color-primary-dark: #5b21b6;
  --color-primary-soft: rgba(124,58,237,0.15);
  --color-accent: #84cc16;
  --color-accent-soft: rgba(132,204,22,0.12);
  --color-bg: #020617;
  --color-bg-soft: #060e1f;
  --color-surface: #0f172a;
  --color-surface-strong: #1a2540;
  --color-card: #0f172a;
  --color-card-alt: #141e33;
  --color-border: #1e293b;
  --color-border-strong: #334155;
  --color-text: #f8fafc;
  --color-text-soft: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-success: #22c55e;
  --color-warning: #fbbf24;
  --color-danger: #ef4444;
  --color-footer-bg: #0b1120;
  --color-footer-text: #94a3b8;
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1a0a3b 50%, #020617 100%);
  --gradient-button: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  --gradient-cta: linear-gradient(90deg, #4c1d95, #7c3aed, #5b21b6);
  --shadow-header: 0 2px 20px rgba(0,0,0,0.4);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.2);
  --shadow-card-hover: 0 8px 32px rgba(124,58,237,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 50px;
  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --container-max: 1200px;
  --header-h: 72px;
  --mobile-header-h: 64px;
  --motion-fast: 0.15s;
  --motion-normal: 0.25s;
  --motion-slow: 0.4s;
}

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

body {
  font-family: var(--font-base);
  background: var(--color-bg);
  color: var(--color-text);
  margin: 0;
  padding: 0;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: #a3e635; }

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ── HEADER ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,23,42,0.95);
  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);
  display: flex;
  align-items: center;
}

.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: var(--color-text-muted);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--motion-fast), background var(--motion-fast);
}

.primary-nav a:hover { color: var(--color-accent); }
.primary-nav a.active {
  color: var(--color-accent);
  background: var(--color-accent-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;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--motion-normal), opacity var(--motion-normal);
}

/* ── MOBILE MENU ── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--mobile-header-h);
  left: 12px;
  right: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px;
  z-index: 999;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}

.mobile-menu.is-open { display: block; }

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mobile-nav a {
  display: block;
  padding: 14px 16px;
  color: var(--color-text-soft);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--motion-fast);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  background: var(--color-primary-soft);
  color: var(--color-accent);
}

/* ── HERO ── */
.hero-section {
  background: var(--gradient-hero);
  padding: clamp(48px, 6vw, 80px) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero-section h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 1rem;
  max-width: 800px;
}

.hero-lead {
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  color: var(--color-text-muted);
  max-width: 650px;
  margin: 0;
  line-height: 1.7;
}

/* ── BREADCRUMB ── */
.breadcrumb-wrap {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 16px 0;
  padding-left: 20px;
  padding-right: 20px;
}

.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '›';
  margin-right: 6px;
  color: var(--color-text-muted);
}

.breadcrumb-item a { color: var(--color-text-muted); }
.breadcrumb-item a:hover { color: var(--color-accent); }
.breadcrumb-item.active { color: var(--color-text-soft); }

/* ── CONTENT SECTIONS ── */
.content-section {
  padding: clamp(48px, 5vw, 72px) 0;
}

.content-section:nth-child(even) {
  background: var(--color-bg-soft);
}

.content-section h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 1.25rem;
  color: var(--color-text);
}

.content-section h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 700;
  line-height: 1.3;
  margin: 2rem 0 1rem;
  color: var(--color-accent);
}

.content-section p {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.85;
  color: var(--color-text-soft);
  margin: 0 0 1.25rem;
  max-width: 820px;
}

.content-section ul,
.content-section ol {
  color: var(--color-text-soft);
  padding-left: 24px;
  margin: 0 0 1.25rem;
}

.content-section li {
  margin-bottom: 8px;
  line-height: 1.7;
}

/* ── IMAGE BLOCKS ── */
.img-break {
  padding: 24px 0;
}

.img-block {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

/* ── LOGIN PANEL ── */
.login-panel-section {
  padding: 12px 0 8px;
}

.login-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 420px);
  gap: 28px;
  align-items: stretch;
}

.login-panel-copy,
.login-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.18);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(132, 204, 22, 0.12);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.login-panel-copy h2,
.login-card h3 {
  margin: 14px 0;
  color: var(--color-accent);
}

.login-panel-copy p,
.login-helper {
  color: var(--color-text-soft);
  line-height: 1.8;
}

.login-panel-points {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--color-text-soft);
}

.login-panel-points li {
  margin-bottom: 10px;
}

.login-form {
  display: grid;
  gap: 16px;
}

.field-group {
  display: grid;
  gap: 8px;
}

.field-group span,
.checkbox-row span {
  color: var(--color-text-soft);
  font-size: 0.92rem;
  font-weight: 600;
}

.field-group input {
  width: 100%;
  min-height: 48px;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-soft);
  padding: 0 16px;
  outline: none;
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}

.field-group input::placeholder {
  color: var(--color-text-muted);
}

.field-group input:focus {
  border-color: rgba(132, 204, 22, 0.6);
  box-shadow: 0 0 0 3px rgba(132, 204, 22, 0.12);
}

.login-form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.checkbox-row input {
  width: 16px;
  height: 16px;
  accent-color: #84cc16;
}

.text-link {
  color: var(--color-accent);
  font-weight: 600;
}

.login-submit {
  width: 100%;
  min-height: 50px;
}

.login-helper {
  margin: 14px 0 0;
  font-size: 0.92rem;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: all var(--motion-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #0f172a;
}

.btn-primary:hover {
  background: #a3e635;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(132,204,22,0.3);
}

/* ── FOOTER ── */
.site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--color-footer-text);
  line-height: 1.7;
  margin: 12px 0 8px;
}

.footer-contact {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-contact a { color: var(--color-text-soft); }

.footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li { margin-bottom: 10px; }

.footer-links a {
  color: var(--color-footer-text);
  font-size: 0.875rem;
  transition: color var(--motion-fast);
}

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

.footer-payments li {
  color: var(--color-footer-text);
  font-size: 0.875rem;
}

.footer-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 24px 0;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.age-badge {
  background: rgba(239,68,68,0.12);
  border: 1px solid rgba(239,68,68,0.25);
  color: #f87171;
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  font-weight: 700;
  font-size: 0.75rem;
}

/* ── 404 PAGE ── */
.error-page {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 20px;
}

.error-page h1 {
  font-size: 6rem;
  font-weight: 900;
  color: var(--color-primary);
  margin: 0;
}

.error-page h2 {
  font-size: 1.5rem;
  margin: 8px 0 16px;
}

.error-page p {
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.error-suggestions {
  padding: 40px 0;
}

.error-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.error-link-card {
  background: var(--color-surface, #1a1a2e);
  border: 1px solid var(--color-border, #2a2a4a);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.error-link-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.error-link-card h3 {
  font-size: 1.15rem;
  margin: 0 0 10px;
}

.error-link-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  min-height: 40px;
}

.error-link-card .btn {
  font-size: 0.85rem;
}

.error-help {
  text-align: center;
  padding: 40px 0;
}

@media (max-width: 768px) {
  .error-links-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .error-links-grid {
    grid-template-columns: 1fr;
  }
}

/* ── FOCUS & ACCESSIBILITY ── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

/* ── RESPONSIVE ── */
@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  
  .header-inner {
    min-height: var(--mobile-header-h);
    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 { margin-right: 0; }
  .site-logo {
    height: clamp(30px, 8vw, 40px);
    max-width: clamp(104px, 27vw, 138px);
  }

  .header-actions {
    margin-left: auto;
    justify-content: flex-end;
  }
}

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 640px) {
  .login-panel-copy,
  .login-card {
    padding: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-section {
    padding: 36px 0;
  }
  
  .content-section {
    padding: 36px 0;
  }
}

@media (max-width: 414px) {
  .header-inner {
    padding-left: 8px;
    padding-right: 8px;
    gap: 6px;
  }

  .site-logo {
    max-width: 104px;
  }

  .nav-toggle {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 375px) {
  .container {
    padding: 0 12px;
  }
  
  .hero-section h1 {
    font-size: 1.5rem;
  }
  
  .content-section h2 {
    font-size: 1.25rem;
  }
}