:root {
  --gv-green: #1f7a4d;
  --gv-green-dark: #145c39;
  --gv-green-light: #e8f5ee;
  --gv-gold: #d4a017;
  --gv-text: #1e293b;
  --gv-muted: #64748b;
  --gv-border: #e2e8e4;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: 'Segoe UI', system-ui, sans-serif; color: var(--gv-text); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* Header */
.topbar { background: var(--gv-green-dark); color: #fff; font-size: 13px; }
.topbar-inner { display: flex; justify-content: flex-end; gap: 20px; padding: 6px 20px; align-items: center; }
.topbar-login { background: var(--gv-gold); color: #1e293b; padding: 3px 12px; border-radius: 20px; text-decoration: none; font-weight: 600; }

.site-header { position: sticky; top: 0; z-index: 100; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.navbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-icon { background: var(--gv-green); color: #fff; font-weight: 700; width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.brand-text { font-weight: 700; font-size: 18px; color: var(--gv-green-dark); }
.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a { text-decoration: none; padding: 8px 14px; border-radius: 6px; font-size: 14.5px; font-weight: 500; color: var(--gv-text); }
.main-nav a:hover { background: var(--gv-green-light); }
.main-nav a.active { color: var(--gv-green-dark); font-weight: 700; }
.main-nav a.nav-login { background: var(--gv-green); color: #fff; }
.main-nav a.nav-login:hover { background: var(--gv-green-dark); }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--gv-green-dark), var(--gv-green)); color: #fff; padding: 70px 0; }
.hero h1 { font-size: 38px; margin: 0 0 14px; }
.hero p { font-size: 17px; max-width: 600px; opacity: .95; }
.hero-actions { margin-top: 24px; display: flex; gap: 14px; flex-wrap: wrap; }
.page-hero { background: linear-gradient(135deg, var(--gv-green-dark), var(--gv-green)); color: #fff; padding: 50px 0; text-align: center; }
.page-hero h1 { margin: 0 0 8px; font-size: 30px; }
.page-hero p { margin: 0; opacity: .9; }

/* Buttons */
.btn { display: inline-block; padding: 12px 26px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 15px; border: none; cursor: pointer; }
.btn-gold { background: var(--gv-gold); color: #1e293b; }
.btn-gold:hover { background: #c1930f; }
.btn-outline { background: transparent; border: 2px solid #fff; color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,.15); }
.btn-green { background: var(--gv-green); color: #fff; }
.btn-green:hover { background: var(--gv-green-dark); }

/* Sections */
section { padding: 60px 0; }
.section-alt { background: #f8faf9; }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title h2 { font-size: 28px; color: var(--gv-green-dark); margin: 0 0 8px; }
.section-title p { color: var(--gv-muted); margin: 0; }

.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card { background: #fff; border: 1px solid var(--gv-border); border-radius: 12px; padding: 26px; }
.card h3 { margin-top: 0; color: var(--gv-green-dark); }
.icon-circle { width: 52px; height: 52px; border-radius: 50%; background: var(--gv-green-light); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 14px; }

.stats-strip { background: var(--gv-green-dark); color: #fff; }
.stats-strip .grid-4 { text-align: center; }
.stats-strip .stat-num { font-size: 34px; font-weight: 700; color: var(--gv-gold); }
.stats-strip .stat-label { opacity: .9; font-size: 14px; }

.about-split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.about-split img { border-radius: 12px; }

.faculty-card { text-align: center; }
.faculty-photo { width: 96px; height: 96px; border-radius: 50%; background: var(--gv-green-light); margin: 0 auto 14px; display: flex; align-items: center; justify-content: center; font-size: 30px; color: var(--gv-green-dark); font-weight: 700; overflow: hidden; }
.faculty-card h3 { margin: 6px 0 2px; }
.faculty-card .designation { color: var(--gv-gold); font-weight: 600; font-size: 14px; margin-bottom: 8px; }

.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.gallery-item { aspect-ratio: 4/3; border-radius: 10px; background: var(--gv-green-light); display: flex; align-items: center; justify-content: center; color: var(--gv-green-dark); font-size: 13px; overflow: hidden; }

.notice-list { display: flex; flex-direction: column; gap: 16px; }
.notice-item { background: #fff; border: 1px solid var(--gv-border); border-left: 4px solid var(--gv-green); border-radius: 8px; padding: 18px 22px; }
.notice-item .notice-date { color: var(--gv-gold); font-weight: 600; font-size: 13px; }
.notice-item h3 { margin: 4px 0 6px; }

.form-card { background: #fff; border: 1px solid var(--gv-border); border-radius: 12px; padding: 30px; max-width: 640px; margin: 0 auto; }
.form-card label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; }
.form-card input, .form-card select, .form-card textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--gv-border); border-radius: 8px; font-size: 14.5px; font-family: inherit;
}
.form-card .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-info-item .icon-circle { flex-shrink: 0; margin-bottom: 0; }
.map-embed { border-radius: 12px; overflow: hidden; border: 1px solid var(--gv-border); height: 280px; }
.map-embed iframe { width: 100%; height: 100%; border: 0; }

.alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; font-size: 14.5px; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

.timeline { border-left: 3px solid var(--gv-green); padding-left: 24px; margin-left: 10px; }
.timeline-item { margin-bottom: 24px; position: relative; }
.timeline-item::before { content: ''; position: absolute; left: -31px; top: 4px; width: 14px; height: 14px; border-radius: 50%; background: var(--gv-gold); }

/* Footer */
.site-footer { background: #10331f; color: #cfe3d6; padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 30px; padding-bottom: 30px; }
.footer-grid h4 { color: #fff; margin: 0 0 14px; font-size: 15px; }
.footer-grid a { display: block; text-decoration: none; color: #cfe3d6; margin-bottom: 8px; font-size: 14px; }
.footer-grid a:hover { color: var(--gv-gold); }
.footer-grid p { font-size: 14px; margin: 0 0 6px; }
.social-links { display: flex; gap: 12px; margin-top: 14px; }
.social-links a { background: rgba(255,255,255,.1); padding: 6px 14px; border-radius: 20px; margin: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 16px 0; text-align: center; font-size: 13px; }

/* Login page (public portal) */
.portal-body { min-height: 70vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.portal-card { background: #fff; border: 1px solid var(--gv-border); border-radius: 14px; padding: 40px; max-width: 500px; text-align: center; }
.portal-roles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 24px 0; text-align: left; }
.portal-roles div { background: var(--gv-green-light); border-radius: 10px; padding: 14px; font-size: 14px; }
.portal-roles strong { display: block; color: var(--gv-green-dark); margin-bottom: 4px; }

@media (max-width: 900px) {
  .grid-3, .grid-4, .grid-2, .about-split, .contact-grid, .form-card .form-row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: block; }
  .main-nav { display: none; flex-direction: column; width: 100%; background: #fff; position: absolute; left: 0; top: 100%; padding: 10px 20px; box-shadow: 0 6px 12px rgba(0,0,0,.08); }
  .main-nav.open { display: flex; }
  .navbar { position: relative; flex-wrap: wrap; }
  .portal-roles { grid-template-columns: 1fr; }
}