:root {
  --ink: #102a43;
  --ink-soft: #486581;
  --primary: #0f5b78;
  --primary-dark: #0b465d;
  --accent: #e8793e;
  --surface: #ffffff;
  --canvas: #f3f6f9;
  --line: #d9e2ec;
  --radius-sm: 0.65rem;
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --shadow-sm: 0 4px 16px rgba(16, 42, 67, 0.07);
  --shadow: 0 18px 45px rgba(16, 42, 67, 0.12);
}

html { font-size: 15px; min-height: 100%; }

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background: radial-gradient(circle at 5% 0%, rgba(15, 91, 120, 0.08), transparent 28rem), var(--canvas);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a { color: var(--primary); text-underline-offset: 0.18em; }
a:hover { color: var(--primary-dark); }
h1, h2, h3, h4, h5, h6 { color: var(--ink); font-weight: 700; letter-spacing: -0.025em; }

.portal-header {
  position: relative;
  z-index: 10;
  color: #fff;
  background: linear-gradient(120deg, #0a2638 0%, #0f5b78 62%, #147a8f 100%);
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.14);
}

.portal-header__inner { min-height: 72px; display: flex; align-items: center; gap: 1.5rem; }
.portal-brand { display: inline-flex; align-items: center; gap: 0.75rem; color: #fff; text-decoration: none; margin-right: auto; }
.portal-brand:hover { color: #fff; }
.portal-brand__mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.13);
  font-weight: 800;
  letter-spacing: -0.05em;
}

.portal-brand strong, .portal-brand small { display: block; }
.portal-brand strong { line-height: 1.1; letter-spacing: -0.015em; }
.portal-brand small { margin-top: 0.2rem; color: rgba(255, 255, 255, 0.72); font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; }
.portal-nav { display: flex; align-items: center; gap: 0.25rem; }
.portal-nav a { padding: 0.55rem 0.75rem; border-radius: 0.55rem; color: rgba(255, 255, 255, 0.84); font-size: 0.88rem; font-weight: 600; text-decoration: none; white-space: nowrap; }
.portal-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.12); }
.portal-signout { flex: 0 0 auto; }

.school-bar { background: rgba(255, 255, 255, 0.96); border-bottom: 1px solid var(--line); box-shadow: 0 5px 18px rgba(16, 42, 67, 0.04); }
.school-bar__inner { min-height: 64px; display: flex; align-items: center; gap: 0.8rem; }
.school-bar__logo { width: 38px; height: 38px; flex: 0 0 auto; object-fit: cover; border: 1px solid var(--line); border-radius: 0.7rem; background: var(--canvas); }
.school-bar__placeholder { display: grid; place-items: center; }
.school-bar__name { margin-right: auto; max-width: 20rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.portal-nav--school a { color: var(--ink-soft); }
.portal-nav--school a:hover { color: var(--primary); background: #e9f2f5; }

main { width: 100%; }
main > .container, main > form > .container { animation: page-in 0.28s ease-out both; }
@keyframes page-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

.page-heading { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; margin: 0.5rem 0 1.75rem; }
.page-heading h1 { margin: 0.3rem 0; font-size: clamp(1.8rem, 3vw, 2.55rem); }
.page-heading p { max-width: 46rem; margin: 0; color: var(--ink-soft); }

.card { border: 1px solid rgba(217, 226, 236, 0.75) !important; border-radius: var(--radius) !important; background: var(--surface); box-shadow: var(--shadow-sm) !important; }
.card-body { padding: 1.4rem; }
.card-title { font-weight: 700; }

.btn { min-height: 40px; padding: 0.5rem 0.9rem; border-radius: var(--radius-sm); font-weight: 650; transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: var(--primary); border-color: var(--primary); box-shadow: 0 6px 14px rgba(15, 91, 120, 0.2); }
.btn-primary:hover, .btn-primary:focus { color: #fff; background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline-primary { color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); border-color: var(--primary); }
.btn-sm { min-height: 34px; }

.form-label { margin-bottom: 0.45rem; color: var(--ink); font-size: 0.86rem; font-weight: 700; }
.form-control, .form-select { min-height: 46px; border-color: #bcccdc; border-radius: var(--radius-sm); color: var(--ink); background-color: #fff; }
.form-control:focus, .form-select:focus, .form-check-input:focus { border-color: var(--primary); box-shadow: 0 0 0 0.22rem rgba(15, 91, 120, 0.14); }
.form-text, .text-muted { color: var(--ink-soft) !important; }

.table-responsive { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.table { margin-bottom: 0; color: var(--ink); vertical-align: middle; }
.table > :not(caption) > * > * { padding: 0.85rem 0.9rem; border-bottom-color: #e8eef4; }
.table thead th { color: var(--ink-soft); background: #f7f9fb; font-size: 0.76rem; font-weight: 750; letter-spacing: 0.035em; text-transform: uppercase; white-space: nowrap; }
.badge { padding: 0.42em 0.65em; border-radius: 999px; font-weight: 650; letter-spacing: 0.015em; }
.alert { border: 0; border-left: 4px solid currentColor; border-radius: var(--radius-sm); }
.pagination .page-link { color: var(--primary); border-color: var(--line); }
.pagination .active .page-link { background: var(--primary); border-color: var(--primary); }

.auth-shell { padding-top: clamp(2.25rem, 6vw, 5.5rem); padding-bottom: clamp(2.25rem, 6vw, 5.5rem); }
.auth-panel { display: grid; grid-template-columns: 1.05fr 0.95fr; max-width: 980px; min-height: 510px; margin: 0 auto; overflow: hidden; border: 1px solid rgba(217, 226, 236, 0.7); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow); }
.auth-panel__intro { position: relative; padding: clamp(2rem, 5vw, 4rem); overflow: hidden; color: rgba(255, 255, 255, 0.82); background: linear-gradient(150deg, rgba(7, 35, 52, 0.98), rgba(15, 91, 120, 0.94)), var(--primary); }
.auth-panel__intro::after { content: ""; position: absolute; width: 260px; height: 260px; right: -110px; bottom: -120px; border: 42px solid rgba(255, 255, 255, 0.07); border-radius: 50%; }
.auth-panel__intro h1 { max-width: 12ch; margin: 1rem 0 1.25rem; color: #fff; font-size: clamp(2rem, 4vw, 3.15rem); line-height: 1.06; }
.auth-panel__intro p { max-width: 36rem; margin-bottom: 2.2rem; }
.eyebrow { color: var(--accent); font-size: 0.74rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.auth-feature { display: flex; align-items: center; gap: 0.7rem; margin: 0.8rem 0; font-size: 0.88rem; font-weight: 600; }
.auth-feature span { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 50%; color: #fff; font-size: 0.68rem; }
.auth-panel__form { display: flex; flex-direction: column; justify-content: center; padding: clamp(2rem, 5vw, 4rem); }
.auth-heading { margin-bottom: 1.6rem; }
.auth-heading h2 { margin: 0.4rem 0; font-size: clamp(1.65rem, 3vw, 2.15rem); }
.auth-heading p, .auth-help { color: var(--ink-soft); }
.auth-help { margin: 1.4rem 0 0; text-align: center; font-size: 0.8rem; }
.captcha-field { display: grid; grid-template-columns: auto minmax(90px, 1fr); align-items: center; gap: 0.8rem; }
.captcha-question { min-height: 46px; display: flex; align-items: center; padding: 0 1rem; border: 1px dashed #9fb3c8; border-radius: var(--radius-sm); color: var(--ink); background: #f3f8fa; font-size: 1.05rem; font-weight: 800; letter-spacing: 0.08em; white-space: nowrap; }

.portal-footer { border-top: 1px solid var(--line); color: var(--ink-soft); background: rgba(255, 255, 255, 0.92); }
.portal-footer__inner { min-height: 70px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem 1.5rem; font-size: 0.8rem; }
.portal-footer a { color: var(--ink); font-weight: 650; text-decoration: none; }
.portal-footer__links { display: flex; gap: 1.25rem; }

@media (min-width: 768px) { html { font-size: 16px; } }

@media (max-width: 991.98px) {
  .portal-header__inner, .school-bar__inner { flex-wrap: wrap; padding-top: 0.75rem; padding-bottom: 0.75rem; }
  .portal-nav { width: 100%; order: 3; overflow-x: auto; padding-top: 0.35rem; border-top: 1px solid rgba(255, 255, 255, 0.12); }
  .portal-nav--school { border-top-color: var(--line); }
}

@media (max-width: 767.98px) {
  .auth-panel { grid-template-columns: 1fr; }
  .auth-panel__intro { min-height: auto; }
  .auth-feature { display: none; }
  .portal-brand small { display: none; }
  .portal-footer__inner { padding-top: 1rem; padding-bottom: 1rem; }
}

@media print {
  .portal-header, .school-bar, .portal-footer, .btn, .no-print { display: none !important; }
  body { background: #fff; }
  .card, .table-responsive { border: 0 !important; box-shadow: none !important; }
}