/* =============================================
   tk-11.bid Design System - Emerald Trust Gaming UI
   ============================================= */

:root {
  --color-primary: #14b8a6;
  --color-primary-dark: #0f9f91;
  --color-primary-soft: rgba(20,184,166,0.15);
  --color-secondary: #a7f3d0;
  --color-accent: #f59e0b;
  --color-bg: #0f172a;
  --color-bg-soft: #111c34;
  --color-surface: rgba(255,255,255,0.08);
  --color-surface-strong: rgba(255,255,255,0.14);
  --color-card: rgba(255,255,255,0.06);
  --color-card-alt: rgba(20,184,166,0.08);
  --color-border: rgba(167,243,208,0.18);
  --color-border-strong: rgba(167,243,208,0.30);
  --color-text: #e5fff8;
  --color-text-soft: #c8f5ee;
  --color-text-muted: #8ecfc2;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-footer-bg: rgba(15,23,42,0.92);
  --color-footer-text: #a8e6d3;

  --gradient-hero: linear-gradient(135deg, rgba(20,184,166,0.2), rgba(15,23,42,0.9));
  --gradient-button: linear-gradient(135deg, #14b8a6, #0f9f91);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));

  --shadow-header: 0 2px 20px rgba(0,0,0,0.3);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.2);
  --shadow-card-hover: 0 8px 32px rgba(20,184,166,0.2);
  --shadow-button: 0 4px 16px rgba(20,184,166,0.25);
  --shadow-soft: 0 2px 12px rgba(0,0,0,0.15);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  --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, 2.2vw, 24px);
  --fs-body: 17px;
  --fs-small: 14px;
  --lh-body: 1.85;

  --container-max: 1200px;
  --section-y: clamp(48px, 6vw, 80px);
  --header-h: 72px;
  --mobile-header-h: 64px;

  --motion-fast: 0.15s;
  --motion-normal: 0.3s;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  background: radial-gradient(circle at top left, rgba(20,184,166,0.15), transparent 30%),
              radial-gradient(circle at top right, rgba(167,243,208,0.08), transparent 25%),
              linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
  color: var(--color-text);
  line-height: var(--lh-body);
  font-size: var(--fs-body);
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: var(--color-secondary); text-decoration: none; transition: color var(--motion-fast); }
a:hover { color: #fff; }

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

h1, h2, h3, h4 { color: #f2fffb; font-weight: 800; line-height: 1.25; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); margin-bottom: 18px; }
h3 { font-size: var(--fs-h3); margin-bottom: 12px; }

p { color: var(--color-text-soft); margin-bottom: 16px; }

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

/* ===== HEADER ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000; width: 100%;
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(16px);
  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, .78vw, 14.5px);
  line-height: 1; white-space: nowrap;
  color: var(--color-text-soft); font-weight: 600;
  border-radius: var(--radius-pill);
  transition: all var(--motion-fast);
}
.primary-nav a:hover, .primary-nav a.active {
  color: #fff; 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;
}

.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;
  flex-direction: column; gap: 5px; padding: 10px;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px;
  background: var(--color-text); border-radius: 2px;
  transition: all var(--motion-normal);
}

.mobile-menu {
  display: none; position: fixed;
  left: 12px; right: 12px; top: 76px;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 16px; z-index: 999;
  flex-direction: column;
  max-height: calc(100vh - 96px); overflow-y: auto;
  box-shadow: var(--shadow-card);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  display: block; padding: 14px 16px;
  color: var(--color-text-soft); font-weight: 600;
  border-radius: var(--radius-sm);
}
.mobile-menu a:hover { background: var(--color-primary-soft); color: #fff; }

@media (max-width: 1180px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-inner {
    width: 100%; max-width: none;
    padding-left: clamp(8px, 2.4vw, 14px);
    padding-right: clamp(8px, 2.4vw, 14px);
    justify-content: flex-start;
    gap: clamp(6px, 1.8vw, 10px);
    min-height: var(--mobile-header-h);
  }
  .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; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px; font-weight: 700; font-size: 15px;
  border-radius: var(--radius-pill); border: none;
  cursor: pointer; transition: all var(--motion-normal) var(--ease-out);
  text-decoration: none; white-space: nowrap;
  min-height: 44px;
}
.btn-primary {
  background: var(--gradient-button); color: #fff;
  box-shadow: var(--shadow-button);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(20,184,166,0.35); color: #fff; }
.btn-outline {
  background: rgba(167,243,208,0.1); color: var(--color-secondary);
  border: 1px solid var(--color-border);
}
.btn-outline:hover { background: rgba(167,243,208,0.2); color: #fff; }
.btn-full { width: 100%; }

/* ===== HERO ===== */
.home-hero { padding: clamp(100px, 12vw, 140px) 0 clamp(40px, 5vw, 70px); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero-badge {
  display: inline-block; padding: 8px 16px;
  background: var(--color-primary-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius-pill); font-weight: 700; font-size: 13px;
  color: var(--color-secondary); margin-bottom: 16px;
}
.hero-lead { font-size: clamp(16px, 1.8vw, 19px); color: var(--color-text-soft); margin: 16px 0; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.hero-img { border-radius: var(--radius-lg); border: 1px solid var(--color-border); box-shadow: var(--shadow-card); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .home-hero { padding-top: 90px; }
}

/* ===== INNER HERO ===== */
[class*="inner-hero"], .about-hero, .faq-hero, .register-hero, .login-hero,
[class*="-hero"]:not(.home-hero) {
  padding: clamp(100px, 10vw, 130px) 0 clamp(30px, 4vw, 50px);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex; gap: 8px; align-items: center;
  font-size: 14px; color: var(--color-text-muted);
  margin-bottom: 20px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-secondary); }
.breadcrumb .current { color: var(--color-text-soft); }
.breadcrumb span:not(.current) { color: var(--color-text-muted); }

/* ===== SECTIONS ===== */
[data-seo-body="true"] { padding: var(--section-y) 0; }
[data-seo-body="true"]:nth-child(even) { background: rgba(255,255,255,0.02); }

.content-img {
  width: 100%; max-width: 920px;
  display: block; margin: 28px auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

/* ===== COMPARISON ===== */
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 900px) { .comparison-grid { grid-template-columns: 1fr; } }

/* ===== PRIVACY CALLOUT ===== */
.privacy-callout {
  background: var(--color-surface); border-left: 4px solid var(--color-primary);
  padding: 28px; border-radius: var(--radius-md);
}

/* ===== FAQ ===== */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 768px) { .faq-grid { grid-template-columns: 1fr; } }

.faq-item {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden;
}
.faq-toggle {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 18px 20px; background: none; border: none;
  color: var(--color-text); font-weight: 700; font-size: 16px;
  cursor: pointer; text-align: left;
}
.faq-toggle:hover { background: var(--color-primary-soft); }
.faq-icon { font-style: normal; font-size: 20px; color: var(--color-primary); transition: transform var(--motion-normal); }
.faq-answer { display: none; padding: 0 20px 18px; }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-icon { transform: rotate(45deg); }

/* ===== AUTH LAYOUT ===== */
.auth-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 900px) { .auth-layout { grid-template-columns: 1fr; } }

.auth-form-card {
  background: var(--color-surface-strong); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 36px;
}
.auth-form .form-group { margin-bottom: 20px; }
.auth-form label {
  display: block; margin-bottom: 6px; font-weight: 600;
  font-size: 14px; color: var(--color-text-soft);
}
.auth-form input {
  width: 100%; padding: 14px 16px; font-size: 16px;
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); color: var(--color-text);
  transition: border-color var(--motion-fast);
}
.auth-form input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(20,184,166,0.2);
}
.auth-note { text-align: center; margin-top: 16px; font-size: 14px; color: var(--color-text-muted); }

.auth-trust-card {
  background: var(--color-card-alt); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 24px; margin-bottom: 20px;
}

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-footer-bg);
  backdrop-filter: blur(12px);
  margin-top: var(--section-y);
}

.footer-inner {
  max-width: var(--container-max); margin: 0 auto;
  padding: 48px 20px; display: grid;
  grid-template-columns: 1fr 2fr; gap: 48px;
}

.footer-brand img { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--color-footer-text); line-height: 1.7; }
.footer-email { margin-top: 12px; }

.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col a {
  display: block; padding: 4px 0; color: var(--color-footer-text);
  font-size: 14px; transition: color var(--motion-fast);
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  max-width: var(--container-max); margin: 0 auto;
  padding: 20px; border-top: 1px solid var(--color-border);
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--color-text-muted); margin: 0; }

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
}

/* ===== FOCUS & A11Y ===== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 414px) {
  body { font-size: 16px; }
  .container { padding: 0 14px; }
}

@media (max-width: 375px) {
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
}