/* ============================================================
   Nation Ubuntu School Portal — Design System + components
   Extracted 1-for-1 from the original portal HTML so every
   element keeps the same look on the home page, login pages,
   profile page, and all portal tabs.
   ============================================================ */

:root {
  --africa-blue: #1C3988;
  --ubuntu-maroon: #7A2222;
  --cyan-accent: #38B6FF;
  --light-bg: #F8FAFC;
  --dark-text: #2B2D42;
  --card-shadow: 0 10px 25px rgba(28, 57, 136, 0.08);
  --present-green: #2E7D32;
  --absent-red: #D32F2F;
  --bg-alt: #FFFFFF;
  --border-soft: #E2E8F0;
  --text-muted: #64748B;
  --transition-fast: 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background: var(--light-bg); color: var(--dark-text); display: flex; flex-direction: column; min-height: 100vh; line-height: 1.55; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--africa-blue); text-decoration: none; }
a:hover { color: var(--cyan-accent); }

/* Header */
header.app-header {
  background: linear-gradient(135deg, var(--africa-blue), #122554);
  color: white; padding: 20px 5%;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
  flex-wrap: wrap; gap: 15px;
  position: sticky; top: 0; z-index: 100;
}
.brand-container { display: flex; align-items: center; gap: 20px; }
.school-logo {
  width: 75px; height: 75px; background: white; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 3px solid var(--cyan-accent); overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2); flex-shrink: 0;
}
.school-logo img { width: 100%; height: 100%; object-fit: cover; }
.brand-text h1 { font-size: 1.6rem; letter-spacing: 1px; color: #FFFFFF; font-weight: 800; }
.brand-text h1 span { color: var(--cyan-accent); }
.brand-text p { font-size: 0.85rem; color: #E2E8F0; margin-top: 3px; }

/* Top session badge */
.session-badge {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255,255,255,0.1);
  padding: 8px 14px; border-radius: 8px;
  border: 1px solid rgba(56,182,255,0.4);
}
.session-badge .badge-pic {
  width: 38px; height: 38px; border-radius: 50%; object-fit: cover;
  background: var(--ubuntu-maroon); display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 0.9rem;
  border: 2px solid var(--cyan-accent);
}
.session-badge .badge-pic img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.session-badge .badge-name { font-weight: 600; font-size: 0.9rem; }
.session-badge .badge-role { font-size: 0.72rem; color: var(--cyan-accent); font-weight: 600; }

/* Navigation */
.app-nav {
  background: var(--ubuntu-maroon);
  padding: 0 5%;
  display: flex; gap: 0; overflow-x: auto;
  box-shadow: inset 0 -3px 0 rgba(0,0,0,0.15);
}
.app-nav a {
  padding: 14px 18px; color: white; font-weight: 600; font-size: 0.88rem;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 3px solid transparent;
  transition: var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}
.app-nav a:hover, .app-nav a.active {
  background: rgba(0,0,0,0.18);
  border-bottom-color: var(--cyan-accent);
  color: white;
}
.app-nav a i { color: var(--cyan-accent); }

/* Main + Cards */
main { flex: 1; padding: 25px 5% 40px; max-width: 1400px; width: 100%; margin: 0 auto; }
.card {
  background: var(--bg-alt); border-radius: 12px; padding: 25px;
  box-shadow: var(--card-shadow); margin-bottom: 25px;
  border-top: 5px solid var(--africa-blue);
}
.card-header { margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid var(--border-soft); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card-header h2 { color: var(--africa-blue); display: flex; align-items: center; gap: 12px; font-size: 1.3rem; }
.card-header h2 i { color: var(--cyan-accent); }

/* Buttons / Pills */
.btn {
  background: var(--ubuntu-maroon); color: white; border: none;
  padding: 12px 22px; border-radius: 6px;
  font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 0.92rem;
  transition: var(--transition-fast);
  text-decoration: none;
}
.btn:hover { background: #5c1919; color: white; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; border-radius: 4px; }
.btn-cyan { background: var(--africa-blue); }
.btn-cyan:hover { background: #122554; }
.btn-warning { background: #F59E0B; }
.btn-warning:hover { background: #B45309; }
.btn-danger { background: var(--absent-red); }
.btn-danger:hover { background: #b71c1c; }
.btn-success { background: var(--present-green); }
.btn-success:hover { background: #1B5E20; }
.btn-ghost { background: transparent; color: var(--africa-blue); border: 1px solid var(--africa-blue); }
.btn-ghost:hover { background: var(--africa-blue); color: white; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.form-group label { font-weight: 600; font-size: 0.9rem; color: var(--africa-blue); }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px; border: 1px solid #CBD5E1; border-radius: 6px;
  font-size: 0.95rem; outline: none; transition: border 0.3s, box-shadow 0.3s;
  background: white; font-family: inherit;
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--cyan-accent); box-shadow: 0 0 5px rgba(56,182,255,0.4);
}
.field-help { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

/* Result / callouts */
.result-box {
  margin-top: 20px; padding: 20px; border-radius: 8px;
  background: var(--light-bg);
  border-left: 5px solid var(--cyan-accent);
  border: 1px solid var(--border-soft);
  display: none;
}
.result-box.active { display: block; }

.alert { padding: 12px 14px; border-radius: 6px; margin-bottom: 12px; font-size: 0.9rem; }
.alert-success { background: #DCFCE7; color: #166534; border: 1px solid #86EFAC; }
.alert-error { background: #FEE2E2; color: #991B1B; border: 1px solid #FCA5A5; }
.alert-info { background: #DBEAFE; color: #1E3A8A; border: 1px solid #93C5FD; }
.alert-warn { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }

.badge { display: inline-block; padding: 5px 12px; border-radius: 20px; font-size: 0.78rem; font-weight: bold; }
.badge-success { background: var(--present-green); color: white; }
.badge-muted { background: var(--text-muted); color: white; }
.badge-warn { background: #F59E0B; color: white; }

/* Banner */
.banner {
  background: linear-gradient(rgba(28,57,136,0.88), rgba(122,34,34,0.88));
  background-size: cover; background-position: center;
  color: white; padding: 50px 30px; border-radius: 12px;
  text-align: center; margin-bottom: 25px;
}
.banner h2 { font-size: 2.2rem; margin-bottom: 10px; }
.banner p { font-size: 1.05rem; max-width: 720px; margin: 0 auto; opacity: 0.95; }

/* Hero/Home */
.hero {
  background: linear-gradient(rgba(28,57,136,0.85), rgba(122,34,34,0.85)), radial-gradient(circle at 30% 20%, #2d4baa 0%, #122554 60%);
  color: white; padding: 90px 5%; text-align: center;
  position: relative; overflow: hidden;
}
.hero h1 { font-size: 2.6rem; font-weight: 800; margin-bottom: 14px; letter-spacing: 0.5px; }
.hero h1 span { color: var(--cyan-accent); }
.hero p.tagline { font-size: 1.15rem; max-width: 720px; margin: 0 auto 28px; opacity: 0.95; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .cta-row .btn-hero {
  padding: 14px 26px; border-radius: 8px; font-weight: 700; font-size: 1rem;
  border: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 10px;
  transition: var(--transition-fast);
}
.btn-hero.primary { background: var(--cyan-accent); color: var(--africa-blue); }
.btn-hero.primary:hover { background: white; }
.btn-hero.outline { background: transparent; color: white; border: 2px solid white; }
.btn-hero.outline:hover { background: white; color: var(--africa-blue); }

/* Section grid */
.section-block { padding: 60px 5%; max-width: 1300px; margin: 0 auto; }
.section-block h2 { font-size: 1.9rem; color: var(--africa-blue); text-align: center; margin-bottom: 16px; }
.section-block h2 i { color: var(--cyan-accent); }
.section-block > p.lead { text-align: center; max-width: 760px; margin: 0 auto 36px; color: var(--text-muted); font-size: 1.02rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; }
.feature {
  background: white; border-radius: 12px; padding: 26px;
  box-shadow: var(--card-shadow); border-top: 4px solid var(--ubuntu-maroon);
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(28,57,136,0.12); }
.feature i.fa-solid, .feature i.fa-regular { font-size: 2rem; color: var(--africa-blue); margin-bottom: 14px; }
.feature h3 { color: var(--africa-blue); margin-bottom: 8px; font-size: 1.15rem; }
.feature p { color: var(--text-muted); font-size: 0.95rem; }

/* Stats counter strip */
.stats-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; padding: 30px 5%; background: var(--africa-blue);
  color: white; text-align: center;
}
.stats-strip .stat .n { font-size: 2rem; font-weight: 800; color: var(--cyan-accent); }
.stats-strip .stat .l { font-size: 0.85rem; opacity: 0.95; }

/* Tabs */
.tabs-bar { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab-btn { padding: 8px 16px; border-radius: 6px; border: 1px solid var(--border-soft); background: white; color: var(--africa-blue); cursor: pointer; font-weight: 600; font-size: 0.85rem; }
.tab-btn.active { background: var(--africa-blue); color: white; border-color: var(--africa-blue); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Tables */
.table-wrap { overflow-x: auto; }
table.data {
  width: 100%; border-collapse: collapse; background: white;
  border-radius: 8px; overflow: hidden;
  min-width: 540px;
}
table.data th { background: var(--africa-blue); color: white; padding: 10px 12px; text-align: left; font-size: 0.85rem; }
table.data td { padding: 10px 12px; border-bottom: 1px solid var(--border-soft); font-size: 0.9rem; }
table.data tr:nth-child(even) td { background: var(--light-bg); }
table.data tr:hover td { background: #EEF4FF; }
table.data td.actions { white-space: nowrap; }

/* Lists */
.list-row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  padding: 12px; background: var(--light-bg);
  border: 1px solid var(--border-soft); border-radius: 8px;
  margin-bottom: 10px; gap: 10px;
}
.list-row strong { color: var(--africa-blue); }
.list-empty { color: var(--text-muted); font-style: italic; padding: 8px 0; }

/* Footer */
footer { background: var(--africa-blue); color: white; text-align: center; padding: 25px; margin-top: auto; font-size: 0.9rem; border-top: 4px solid var(--ubuntu-maroon); }
footer p span { color: var(--cyan-accent); font-weight: 600; }

/* Profile specific */
.profile-grid { display: grid; grid-template-columns: 280px 1fr; gap: 26px; }
.profile-pic-card { text-align: center; }
.profile-pic-card img.profile-pic {
  width: 180px; height: 180px; border-radius: 50%;
  border: 4px solid var(--cyan-accent); object-fit: cover;
  margin: 0 auto 14px; background: var(--ubuntu-maroon);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 3rem; font-weight: 700;
}
.profile-pic-card img.profile-pic.has-image { background: transparent; }
.profile-pic-card .upload-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.profile-info h3 { color: var(--africa-blue); margin-bottom: 4px; font-size: 1.3rem; }
.profile-info p { color: var(--text-muted); margin-bottom: 12px; }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 6px 16px; align-items: center; margin: 10px 0; }
.kv .k { color: var(--africa-blue); font-weight: 600; font-size: 0.9rem; }
.kv .v { color: var(--dark-text); font-size: 0.95rem; }

/* Caravana two-column */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

/* Small responsive */
@media (max-width: 900px) {
  .profile-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .banner h2 { font-size: 1.6rem; }
  .section-block h2 { font-size: 1.5rem; }
  .brand-text h1 { font-size: 1.2rem; }
  .brand-text p  { font-size: 0.75rem; }
  .school-logo { width: 55px; height: 55px; }
}
@media (max-width: 600px) {
  header.app-header { padding: 12px 4%; }
  .session-badge .badge-name { font-size: 0.78rem; }
  .app-nav a { padding: 12px 12px; font-size: 0.8rem; }
  main { padding: 16px 4% 30px; }
  .hero { padding: 60px 5%; }
  .hero h1 { font-size: 1.6rem; }
  .card { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; gap: 0; }
  .kv .k { margin-top: 8px; }
}