/* ═══════════════════════════════════════════════════════════
   BIPU LAW ACADEMY — UNIFIED DESIGN SYSTEM v3.0
   Prestige Palette: Navy · Antique Gold · Soft White · Charcoal
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Prestige Palette from design brief */
  --midnight:  #1B263B;        /* Primary Navy — nav, footer, anchors */
  --gold:      #C29B40;        /* Accent Gold — buttons, icons, highlights */
  --gold-lt:   #A67C27;        /* Gold dark variant for gradient end */
  --gold-grad: linear-gradient(135deg, #C29B40, #A67C27); /* Metallic shimmer */
  --charcoal:  #415A77;        /* Deep Charcoal — subheadings, info cards */
  --oxblood:   #7F1D1D;        /* Oxblood — warning/hot boxes */
  --slate:     #64748B;        /* Body text secondary */
  --paper:     #F8F9FA;        /* Soft White — page background */
  --white:     #ffffff;
  --border:    #E2E8F0;
  --border-dk: #243447;
  --hover-bg:  rgba(194, 155, 64, 0.06);
  --ink:       #1B263B;
  --muted:     #64748B;
  --rule:      #E2E8F0;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--midnight);
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

/* ── GLASSMORPHISM NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(27, 38, 59, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw; height: 58px;
  border-bottom: 1px solid rgba(194, 155, 64, 0.4);
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-weight: 700; font-size: 1rem;
  color: var(--gold); letter-spacing: 0.12em;
  text-decoration: none; text-transform: uppercase;
}
.nav-right { display: flex; align-items: center; gap: 2rem; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  color: rgba(255,255,255,0.55);
  text-decoration: none; font-size: 0.78rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }

/* Lang toggle */
.lang-toggle {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px; padding: 3px; gap: 2px;
  cursor: pointer; user-select: none; flex-shrink: 0;
}
.lang-btn {
  padding: 4px 12px; border-radius: 16px;
  font-size: 0.72rem; letter-spacing: 0.08em; font-weight: 500;
  transition: background 0.2s, color 0.2s;
  color: rgba(255,255,255,0.4); background: transparent;
}
.lang-btn.active { background: var(--gold); color: var(--white); }

/* ── HAMBURGER ── */
.hamburger {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; cursor: pointer; padding: 6px; z-index: 200;
  background: none; border: none; flex-shrink: 0;
}
.hamburger span {
  display: block; width: 22px; height: 1.5px;
  background: var(--gold); transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── DRAWER ── */
.mobile-drawer {
  position: fixed; top: 58px; left: 0; right: 0; bottom: 0;
  background: rgba(10,12,20,0.98);
  backdrop-filter: blur(16px);
  z-index: 150; display: flex; flex-direction: column;
  padding: 0 6vw 2.5rem; overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-section-label {
  font-size: 0.6rem; letter-spacing: 0.24em; text-transform: uppercase;
  color: rgba(255,255,255,0.25); margin: 2rem 0 0.6rem;
  font-family: 'Montserrat', sans-serif;
}
.drawer-links { list-style: none; display: flex; flex-direction: column; gap: 0; }
.drawer-links li a {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-family: 'Noto Serif Bengali', serif;
  font-size: 1rem; color: rgba(255,255,255,0.65);
  text-decoration: none; transition: color 0.2s;
  letter-spacing: 0.02em;
}
.drawer-links li a:hover { color: var(--gold); }
.drawer-links li a .d-icon { font-size: 0.95rem; width: 20px; text-align: center; opacity: 0.6; }
.drawer-divider { border: none; border-top: 1px solid rgba(255,255,255,0.06); margin: 1.4rem 0 0; }
.drawer-lang { display: flex; align-items: center; justify-content: space-between; margin-top: 1.6rem; }
.drawer-lang-label { font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(255,255,255,0.3); font-family: 'Montserrat', sans-serif; }
.drawer-lang-toggle { display: flex; align-items: center; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 20px; padding: 3px; gap: 2px; cursor: pointer; user-select: none; }
.drawer-lang-btn { padding: 5px 14px; border-radius: 16px; font-size: 0.75rem; font-weight: 500; transition: background 0.2s, color 0.2s; color: rgba(255,255,255,0.35); background: transparent; }
.drawer-lang-btn.active { background: var(--gold); color: var(--white); }
.drawer-socials { display: flex; gap: 1rem; margin-top: 2rem; }
.drawer-social { display: flex; align-items: center; gap: 0.5rem; color: rgba(255,255,255,0.3); text-decoration: none; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; transition: color 0.2s; padding: 0.5rem 0; }
.drawer-social:hover { color: var(--gold); }
.badge-soon { display: inline-block; font-size: 0.56rem; letter-spacing: 0.1em; background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.3); border: 1px solid rgba(255,255,255,0.1); border-radius: 2px; padding: 2px 6px; margin-left: auto; white-space: nowrap; font-family: 'Montserrat', sans-serif; text-transform: uppercase; }

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links { display: none; }
  .lang-toggle { display: none; }
}

/* ── PAGE HEADER ── */
.page-header {
  background: var(--midnight);
  padding: 5rem 5vw 4rem;
  border-bottom: 1px solid rgba(194,155,64,0.3);
  position: relative; overflow: hidden;
}
.page-header::before {
  content: '§';
  position: absolute; right: 5vw; top: 50%; transform: translateY(-50%);
  font-family: 'Playfair Display', serif;
  font-size: clamp(8rem, 18vw, 16rem);
  color: rgba(194,155,64,0.06);
  line-height: 1; pointer-events: none;
}
.page-header .section-label {
  font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 0.9rem; opacity: 0.85;
}
.page-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 900; color: var(--white);
  line-height: 1.1; max-width: 640px;
  letter-spacing: -0.01em;
}
.page-header p {
  font-family: 'Noto Serif Bengali', serif;
  font-size: 0.96rem; color: rgba(255,255,255,0.5);
  margin-top: 1rem; max-width: 500px; line-height: 1.85;
}

/* ── STICKY TABS ── */
.section-tabs, .topic-tabs, .exam-tabs {
  display: flex; gap: 0;
  background: rgba(248,247,244,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 58px; z-index: 50;
  overflow-x: auto;
}
.stab, .ttab, .etab {
  flex-shrink: 0; padding: 0.95rem 1.4rem;
  text-align: center; cursor: pointer;
  font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--slate); border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: color 0.2s, border-color 0.2s;
  user-select: none; font-family: 'Montserrat', sans-serif; white-space: nowrap;
}
.stab .stab-icon, .ttab .ttab-icon, .etab .etab-icon {
  display: block; font-size: 1.1rem; margin-bottom: 0.2rem;
}
.stab.active, .ttab.active, .etab.active { color: var(--midnight); border-color: var(--gold); }
.stab:hover:not(.active), .ttab:hover:not(.active), .etab:hover:not(.active) { color: var(--gold); }
.stab.civil.active  { color: var(--midnight); }
.stab.criminal.active { color: var(--midnight); }

/* ── SHARED LAYOUT ── */
.laws-page, .calc-page, .shortcuts-page,
.family-page, .sugg-page { padding: 3.5rem 5vw 7rem; max-width: 960px; }

hr.rule { border: none; border-top: 1px solid var(--border); margin: 2.8rem 0; }

/* ── SECTION HEADINGS ── */
.sec-heading {
  font-family: 'Playfair Display', serif;
  font-size: 1.35rem; font-weight: 800;
  color: var(--midnight); margin-bottom: 0.35rem;
  letter-spacing: 0.01em;
}
.sec-sub {
  font-family: 'Noto Serif Bengali', serif;
  font-size: 0.9rem; color: var(--charcoal); margin-bottom: 1.6rem;
}
.compare-title, .cat-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem; font-weight: 700;
  color: var(--midnight); margin-bottom: 0.3rem;
  letter-spacing: 0.01em;
}

/* ── CARDS ── */
.law-article, .subject-card, .rel-card,
.hot-card, .tip-card, .flow-content {
  background: var(--white);
  border: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
}
.law-article:hover, .subject-card:hover { background: var(--hover-bg); border-color: rgba(194,155,64,0.25); }
.law-article { overflow: hidden; margin-bottom: 0; }

/* ── INFO BOXES ── */
.info-box {
  border-left: 2px solid var(--gold);
  background: rgba(194,155,64,0.05);
  padding: 0.9rem 1.2rem; margin: 1.2rem 0;
  font-family: 'Noto Serif Bengali', serif;
  font-size: 0.87rem; color: #4a4032; line-height: 1.85;
}
.info-box strong {
  color: var(--gold); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; display: block; margin-bottom: 0.3rem;
  font-family: 'Montserrat', sans-serif;
}
.tip-box {
  border-left: 2px solid #2a6a4a;
  background: rgba(42,106,74,0.04);
  padding: 0.9rem 1.2rem; margin: 1.2rem 0;
  font-family: 'Noto Serif Bengali', serif;
  font-size: 0.87rem; color: #1e4a35; line-height: 1.85;
}
.tip-box strong {
  color: #2a6a4a; font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; display: block; margin-bottom: 0.3rem;
  font-family: 'Montserrat', sans-serif;
}
.hot-box {
  border-left: 2px solid var(--oxblood);
  background: rgba(127,29,29,0.04);
  padding: 0.9rem 1.2rem; margin: 1.2rem 0;
  font-family: 'Noto Serif Bengali', serif;
  font-size: 0.87rem; color: var(--oxblood); line-height: 1.85;
}
.hot-box strong {
  color: var(--oxblood); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; display: block; margin-bottom: 0.3rem;
  font-family: 'Montserrat', sans-serif;
}

/* ── EXPAND ICON ── */
.expand-icon {
  font-size: 1.2rem; color: var(--border);
  transition: transform 0.3s, color 0.2s;
  flex-shrink: 0; line-height: 1; margin-top: 2px;
}
.law-article.open .expand-icon,
.subject-card.open .expand-icon,
.hot-card.open .expand-icon { transform: rotate(45deg); color: var(--gold); }

/* ── TABLES ── */
.ref-table, .law-table, .inherit-table, .compare-table {
  width: 100%; border-collapse: collapse; font-size: 0.87rem;
}
.ref-table thead tr, .law-table thead tr,
.inherit-table thead tr { background: var(--midnight); }
.ref-table th, .law-table th, .inherit-table th {
  color: var(--gold); font-size: 0.66rem; letter-spacing: 0.14em;
  text-transform: uppercase; padding: 0.85rem 1rem;
  text-align: left; font-family: 'Montserrat', sans-serif; font-weight: 500;
}
.ref-table td, .law-table td, .inherit-table td {
  padding: 0.8rem 1rem; border-bottom: 1px solid var(--border);
  font-family: 'Noto Serif Bengali', serif; color: #3a3530;
  background: var(--white); vertical-align: top;
}
.ref-table tbody tr:hover td,
.law-table tbody tr:hover td,
.inherit-table tbody tr:hover td { background: var(--hover-bg); }
.ref-table td:first-child { font-family: 'Playfair Display', serif; font-size: 0.95rem; font-weight: 700; }

/* ── COMPARE TABLES ── */
.compare-table { overflow-x: auto; display: block; }
.compare-table thead, .compare-table tbody { display: table; width: 100%; table-layout: fixed; }
.compare-table th { padding: 0.85rem 1rem; text-align: left; font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; font-family: 'Montserrat', sans-serif; }
.compare-table th:first-child { background: var(--midnight); color: var(--gold); width: 22%; }
.compare-table td { padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); font-family: 'Noto Serif Bengali', serif; vertical-align: top; line-height: 1.7; }
.compare-table td:first-child { background: #f5f4f2; font-family: 'Montserrat', sans-serif; font-size: 0.73rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--slate); font-weight: 600; }

/* ── BADGES ── */
.badge-update { display: inline-block; font-size: 0.56rem; letter-spacing: 0.1em; background: rgba(42,106,74,0.1); color: #2a6a4a; border: 1px solid rgba(42,106,74,0.2); border-radius: 2px; padding: 2px 7px; font-family: 'Montserrat', sans-serif; text-transform: uppercase; font-weight: 600; white-space: nowrap; }
.badge-hot { display: inline-block; font-size: 0.56rem; letter-spacing: 0.1em; background: rgba(127,29,29,0.08); color: var(--oxblood); border: 1px solid rgba(127,29,29,0.2); border-radius: 2px; padding: 2px 7px; font-family: 'Montserrat', sans-serif; font-weight: 600; white-space: nowrap; }
.badge-new { display: inline-block; font-size: 0.56rem; letter-spacing: 0.1em; background: rgba(194,155,64,0.1); color: var(--gold); border: 1px solid rgba(194,155,64,0.3); border-radius: 2px; padding: 2px 7px; font-family: 'Montserrat', sans-serif; font-weight: 600; white-space: nowrap; }

/* ── FOOTER ── */
footer {
  background: var(--midnight);
  padding: 1.8rem 5vw;
  display: flex; align-items: center; justify-content: space-between;
  border-top: 1px solid rgba(194,155,64,0.2);
}
.footer-logo { font-family: 'Playfair Display', serif; font-size: 0.85rem; color: var(--gold); letter-spacing: 0.12em; text-transform: uppercase; }
.footer-copy { font-size: 0.72rem; color: rgba(255,255,255,0.25); letter-spacing: 0.04em; }

/* LANG FADE */
[data-bn] { transition: opacity 0.12s ease; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: rgba(194,155,64,0.3); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }