/* =============================================
   GHS REUNION 2026 — SHARED STYLES
   সব পেজে use হবে
   ============================================= */

:root {
  --gold: #C9A84C;
  --gold-light: #E8C97A;
  --gold-dark: #8B6914;
  --deep-green: #0D2B1F;
  --mid-green: #1A4A32;
  --light-green: #2A6B49;
  --cream: #FDF6E3;
  --cream-dark: #F2E8C8;
  --white: #FFFFFF;
  --red: #C0392B;
  --text-dark: #1a1a1a;
  --border: #d5c9a8;
  --input-bg: #FFFDF5;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: 'Hind Siliguri', sans-serif; background: var(--cream); color: var(--text-dark); overflow-x: hidden; }

/* ── HEADER ── */
header {
  background: linear-gradient(135deg, var(--deep-green) 0%, var(--mid-green) 60%, var(--light-green) 100%);
  position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  border-bottom: 3px solid var(--gold);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px; gap: 16px;
}
.header-logo { display: flex; align-items: center; gap: 14px; text-decoration: none; flex: 1; min-width: 0; }
.logo-emblem { width: clamp(44px,6vw,60px); height: clamp(44px,6vw,60px); flex-shrink: 0; filter: drop-shadow(0 2px 8px rgba(201,168,76,0.5)); }
.header-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.header-bn { font-size: clamp(0.88rem,2.5vw,1.25rem); font-weight: 600; color: var(--gold-light); letter-spacing: 0.02em; line-height: 1.2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-en { font-family: 'Cinzel', serif; font-size: clamp(0.5rem,1.2vw,0.68rem); color: rgba(255,255,255,0.72); letter-spacing: 0.15em; text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-year { font-family: 'Cinzel', serif; font-size: clamp(0.46rem,1vw,0.62rem); color: var(--gold); letter-spacing: 0.2em; margin-top: 1px; }

/* Desktop Nav */
.desktop-nav { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }
.desktop-nav a {
  font-family: 'Hind Siliguri', sans-serif;
  font-size: clamp(0.75rem,1.6vw,0.9rem); font-weight: 500;
  color: rgba(255,255,255,0.85); text-decoration: none;
  padding: 8px 12px; border-radius: 4px;
  transition: all 0.25s; white-space: nowrap;
}
.desktop-nav a:hover { background: rgba(201,168,76,0.2); color: var(--gold-light); }
.desktop-nav a.active { background: rgba(201,168,76,0.15); color: var(--gold-light); }
.desktop-nav a.register-btn {
  background: var(--gold); color: var(--deep-green);
  font-weight: 600; padding: 8px 18px; margin-left: 4px;
}
.desktop-nav a.register-btn:hover { background: var(--gold-light); transform: translateY(-1px); }
.desktop-nav a.register-btn.active { background: var(--gold-light); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; flex-shrink: 0; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--gold-light); border-radius: 2px; transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Sidebar */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 998; }
.sidebar-overlay.show { display: block; }
.sidebar {
  position: fixed; top: 0; right: -290px; width: 290px; height: 100vh;
  background: linear-gradient(160deg,var(--deep-green),var(--mid-green));
  z-index: 999; transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
  box-shadow: -4px 0 20px rgba(0,0,0,0.3); overflow-y: auto;
  display: flex; flex-direction: column;
}
.sidebar.open { right: 0; }
.sidebar-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(201,168,76,0.3);
  display: flex; align-items: center; justify-content: space-between;
}
.sidebar-logo-text { font-size: 0.95rem; font-weight: 600; color: var(--gold-light); display: block; }
.sidebar-sub { font-size: 0.58rem; color: rgba(255,255,255,0.45); font-family: 'Cinzel',serif; letter-spacing: 0.1em; margin-top: 2px; display: block; }
.sidebar-close { background: none; border: none; color: rgba(255,255,255,0.65); font-size: 1.5rem; cursor: pointer; line-height: 1; padding: 4px; }
.sidebar-close:hover { color: var(--gold-light); }
.sidebar-nav { padding: 10px 0; flex: 1; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 20px; color: rgba(255,255,255,0.82);
  text-decoration: none; font-size: 1rem; font-weight: 500;
  transition: all 0.2s; border-left: 3px solid transparent;
}
.sidebar-nav a:hover, .sidebar-nav a.active {
  background: rgba(201,168,76,0.12); color: var(--gold-light);
  border-left-color: var(--gold);
}
.nav-icon { font-size: 1rem; width: 22px; text-align: center; flex-shrink: 0; }
.sidebar-divider { height: 1px; background: rgba(255,255,255,0.1); margin: 8px 20px; }
.sidebar-reg {
  margin: 14px 20px; display: block;
  background: linear-gradient(135deg,var(--gold-dark),var(--gold));
  color: var(--deep-green); text-align: center;
  padding: 13px; border-radius: 6px; font-weight: 700;
  font-size: 0.95rem; text-decoration: none; transition: all 0.2s;
  border-left: none !important;
}
.sidebar-reg:hover { background: linear-gradient(135deg,var(--gold),var(--gold-light)); transform: translateY(-1px); }
.sidebar-reg.active { background: linear-gradient(135deg,var(--gold),var(--gold-light)); }
.sidebar-footer {
  padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.38); font-size: 0.7rem;
  text-align: center; line-height: 1.7;
}
.sidebar-footer span { color: var(--gold); }

/* Page Hero (shared) */
.page-hero {
  background: linear-gradient(160deg,var(--deep-green),var(--mid-green));
  padding: clamp(32px,6vw,58px) 16px;
  text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0; opacity: 0.04;
  background-image:
    repeating-linear-gradient(45deg,#C9A84C 0px,#C9A84C 1px,transparent 1px,transparent 40px),
    repeating-linear-gradient(-45deg,#C9A84C 0px,#C9A84C 1px,transparent 1px,transparent 40px);
}
.hero-badge {
  display: inline-block; background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.4); color: var(--gold-light);
  font-family: 'Cinzel',serif; font-size: clamp(0.58rem,1.4vw,0.7rem);
  letter-spacing: 0.22em; padding: 5px 20px; border-radius: 2px;
  margin-bottom: 14px; position: relative;
}
.page-hero h1 {
  font-size: clamp(1.4rem,4vw,2.6rem); font-weight: 600;
  color: var(--white); margin-bottom: 8px; position: relative; line-height: 1.3;
}
.page-hero p { color: rgba(255,255,255,0.65); font-size: clamp(0.82rem,2vw,0.98rem); font-weight: 300; position: relative; }

/* Shared Footer */
.site-footer {
  background: var(--deep-green); border-top: 3px solid var(--gold);
  padding: clamp(36px,6vw,50px) clamp(16px,4vw,32px) clamp(20px,4vw,28px);
  color: rgba(255,255,255,0.6);
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 36px; margin-bottom: 32px;
}
.footer-brand-name { font-size: 1.05rem; font-weight: 600; color: var(--gold-light); margin-bottom: 6px; display: block; }
.footer-brand p { font-size: 0.86rem; line-height: 1.7; margin-top: 10px; color: rgba(255,255,255,0.48); }
.footer-col h4 { font-family: 'Cinzel',serif; font-size: 0.7rem; letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; margin-bottom: 14px; }
.footer-col a { display: block; color: rgba(255,255,255,0.55); text-decoration: none; font-size: 0.88rem; margin-bottom: 9px; transition: color 0.2s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: clamp(0.7rem,1.5vw,0.8rem); color: rgba(255,255,255,0.32); }
.footer-bottom span { color: var(--gold); }

/* Shared Buttons */
.btn-primary {
  background: linear-gradient(135deg,var(--gold-dark),var(--gold));
  color: var(--deep-green); font-family: 'Hind Siliguri',sans-serif;
  font-size: clamp(0.9rem,2vw,1rem); font-weight: 600;
  padding: clamp(12px,2.5vw,14px) clamp(24px,5vw,36px);
  border: none; border-radius: 4px; cursor: pointer;
  text-decoration: none; display: inline-block;
  transition: all 0.3s; letter-spacing: 0.04em;
  box-shadow: 0 4px 20px rgba(201,168,76,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201,168,76,0.5); }
.btn-secondary {
  background: transparent; color: var(--white);
  font-family: 'Hind Siliguri',sans-serif;
  font-size: clamp(0.9rem,2vw,1rem); font-weight: 500;
  padding: clamp(12px,2.5vw,14px) clamp(24px,5vw,36px);
  border: 1px solid rgba(255,255,255,0.35); border-radius: 4px;
  cursor: pointer; text-decoration: none; display: inline-block; transition: all 0.3s;
}
.btn-secondary:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); transform: translateY(-2px); }

/* Responsive */
@media(max-width:900px) { .footer-inner { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: span 2; } }
@media(max-width:768px) { .desktop-nav { display: none; } .hamburger { display: flex; } .header-year { display: none; } .footer-inner { grid-template-columns: 1fr; } .footer-brand { grid-column: span 1; } }
@media(max-width:480px) { .header-en { display: none; } }