:root {
  color-scheme: light;
  --vidyam-navy: #0b2f63;
  --vidyam-navy-dark: #08254d;
  --vidyam-orange: #f47700;
  --vidyam-orange-hover: #d96500;
  --vidyam-blue: #1769ff;
  --vidyam-page-bg: #f4f7fc;
  --vidyam-surface: #fff;
  --vidyam-border: #dce4ef;
  --vidyam-blue-soft: #eaf2ff;
  --vidyam-text: #15243a;
  --vidyam-text-muted: #64748b;
  --vidyam-success: #15803d;
  --vidyam-warning: #b45309;
  --vidyam-danger: #b91c1c;
  --vidyam-info: #1d4ed8;
  --vidyam-radius-sm: 8px;
  --vidyam-radius-md: 12px;
  --vidyam-radius-lg: 18px;
  --vidyam-shadow-card: 0 4px 18px rgba(11, 47, 99, .06);
  --vidyam-shadow-hover: 0 8px 24px rgba(11, 47, 99, .1);
}

/* Base typography and page layout */
html {
  min-width: 320px;
  background: var(--vidyam-page-bg);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--vidyam-page-bg);
  color: var(--vidyam-text);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.55;
}

main.container {
  max-width: 1240px;
}

main h1,
main h2,
main h3,
main h4 {
  color: var(--vidyam-navy);
  font-weight: 650;
  letter-spacing: -.015em;
}

.text-secondary {
  color: var(--vidyam-text-muted) !important;
}

/* Header and navigation */
.vidyam-navbar {
  min-height: 68px;
  padding: .35rem 0;
  background: var(--vidyam-navy);
  box-shadow: 0 3px 14px rgba(8, 37, 77, .14);
}

.vidyam-wordmark {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: 0;
  line-height: 1;
}

.vidyam-logo {
  display: block;
  flex: 0 0 auto;
  width: 54px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.vidyam-navbar-username {
  max-width: 10rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.vidyam-admin-brand,
.vidyam-admin-brand > a {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
}

.vidyam-navbar .btn-outline-light {
  border-color: rgba(255, 255, 255, .7);
  border-radius: var(--vidyam-radius-sm);
  font-weight: 600;
}

.vidyam-navbar .btn-outline-light:hover {
  color: var(--vidyam-navy);
  background: #fff;
}

/* Links and buttons */
a {
  color: var(--vidyam-blue);
}

a:hover {
  color: var(--vidyam-navy);
}

main :where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid rgba(244, 119, 0, .55);
  outline-offset: 3px;
}

.btn {
  min-height: 2.45rem;
  border-radius: var(--vidyam-radius-sm);
  font-weight: 600;
  transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease, color .15s ease;
}

.btn-primary {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--vidyam-orange);
  --bs-btn-border-color: var(--vidyam-orange);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--vidyam-orange-hover);
  --bs-btn-hover-border-color: var(--vidyam-orange-hover);
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: var(--vidyam-orange-hover);
  --bs-btn-active-border-color: var(--vidyam-orange-hover);
  --bs-btn-disabled-color: #fff;
  --bs-btn-disabled-bg: #c8cdd5;
  --bs-btn-disabled-border-color: #c8cdd5;
}

.btn-outline-primary {
  --bs-btn-color: var(--vidyam-navy);
  --bs-btn-border-color: var(--vidyam-navy);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--vidyam-navy);
  --bs-btn-hover-border-color: var(--vidyam-navy);
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: var(--vidyam-navy-dark);
  --bs-btn-active-border-color: var(--vidyam-navy-dark);
}

.btn-outline-secondary {
  --bs-btn-color: var(--vidyam-navy);
  --bs-btn-border-color: var(--vidyam-border);
  --bs-btn-hover-color: var(--vidyam-navy);
  --bs-btn-hover-bg: #edf2f8;
  --bs-btn-hover-border-color: #bdcadd;
}

/* Cards and dashboard grids */
.metric,
main .card:not(.metric) {
  border: 1px solid rgba(220, 228, 239, .8);
  border-radius: var(--vidyam-radius-lg);
  background: var(--vidyam-surface);
  box-shadow: var(--vidyam-shadow-card);
}

.metric-link {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: box-shadow .15s ease, transform .15s ease, border-color .15s ease;
}

.metric-link:hover {
  color: inherit;
  border-color: #c4d2e5;
  box-shadow: var(--vidyam-shadow-hover);
  transform: translateY(-1px);
}

.section-card {
  display: flex;
  align-items: center;
  gap: .9rem;
  height: 100%;
  padding: 1rem 1.1rem;
  border: 1px solid var(--vidyam-border);
  border-radius: var(--vidyam-radius-md);
  background: var(--vidyam-surface);
  color: var(--vidyam-text);
  text-decoration: none;
  box-shadow: var(--vidyam-shadow-card);
  transition: box-shadow .15s ease, border-color .15s ease, transform .15s ease;
}

.section-card:hover {
  border-color: #b8c8dd;
  color: var(--vidyam-navy);
  box-shadow: var(--vidyam-shadow-hover);
  transform: translateY(-1px);
}

.section-card small {
  display: block;
  margin-top: .2rem;
  color: var(--vidyam-text-muted);
}

.section-icon {
  flex: 0 0 auto;
  font-size: 1.65rem;
}

.section-heading {
  margin-bottom: 1rem;
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--vidyam-border);
}

.teacher-work-card {
  border: 1px solid var(--vidyam-border);
  border-left-width: .35rem;
}

.teacher-work-pending {
  border-color: rgba(185, 28, 28, .55);
  border-left-width: .35rem;
  box-shadow: 0 0 0 .18rem rgba(185, 28, 28, .06), var(--vidyam-shadow-card);
}

.teacher-work-card.teacher-work-pending:hover {
  box-shadow: 0 0 0 .18rem rgba(185, 28, 28, .09), var(--vidyam-shadow-hover);
}

.teacher-work-clear {
  border-left-color: var(--vidyam-success);
}

/* Tables and pagination */
main .table {
  --bs-table-bg: transparent;
  --bs-table-color: var(--vidyam-text);
  margin-bottom: 0;
}

main .table > thead {
  color: var(--vidyam-navy);
  background: #edf2f8;
}

main .table > thead th {
  font-weight: 700;
  white-space: nowrap;
}

main .table > :not(caption) > * > * {
  padding: .75rem;
  border-bottom-color: #e8edf4;
  vertical-align: middle;
}

main .table > tbody > tr:last-child > * {
  border-bottom-width: 0;
}

main .table-hover > tbody > tr:hover > * {
  --bs-table-bg-state: #f6f9fd;
}

.table-responsive {
  border-radius: var(--vidyam-radius-lg);
}

/* Forms and validation */
main :where(input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="file"]), select, textarea) {
  max-width: 100%;
  border-color: #cbd6e3;
  border-radius: var(--vidyam-radius-sm);
  color: var(--vidyam-text);
}

main :where(input:not([type="hidden"]):not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="file"]), select, textarea):focus {
  border-color: var(--vidyam-blue);
  box-shadow: 0 0 0 .2rem rgba(23, 105, 255, .15);
}

main input[type="file"] {
  max-width: 100%;
}

main .form-label {
  color: var(--vidyam-navy);
  font-weight: 600;
}

main .errorlist {
  margin: 0 0 .5rem;
  padding: .65rem .85rem .65rem 2rem;
  border-radius: var(--vidyam-radius-sm);
  background: #fef2f2;
  color: var(--vidyam-danger);
}

/* Status badges, alerts, and empty states */
.badge {
  font-weight: 650;
  letter-spacing: .005em;
}

.alert {
  border-radius: var(--vidyam-radius-md);
}

.list-group-item {
  border-color: #e8edf4;
}

/* Leaderboards */
.table-responsive.card {
  overflow: hidden;
}

/* Login and account pages */
.login-page main.container {
  max-width: 100%;
}

.login-page main .row {
  min-height: min(72vh, 680px);
  align-items: center;
  margin-top: 0 !important;
}

.login-page main .card {
  padding: clamp(1.5rem, 4vw, 2.25rem) !important;
}

.account-form-card {
  max-width: 36rem;
}

/* Birthday component */
.birthday-card {
  padding: .65rem .85rem;
}

.birthday-title {
  margin: 0 0 .45rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid #e8edf4;
  color: var(--vidyam-navy);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.25;
}

.birthday-subheading {
  margin: 0 0 .2rem;
  color: var(--vidyam-navy);
  font-size: .9rem;
  font-weight: 700;
  line-height: 1.25;
}

.birthday-empty {
  margin: 0;
  font-size: .875rem;
  line-height: 1.3;
}

.birthday-entry {
  font-size: .875rem;
  line-height: 1.3;
}

.birthday-entry .small {
  font-size: .8rem;
}

/* Friendly learning style */
.role-student,
.role-parent {
  background: #f2f7ff;
}

.role-student .metric,
.role-student main .card:not(.metric),
.role-parent .metric,
.role-parent main .card:not(.metric) {
  border-radius: 1.2rem;
}

/* Responsive breakpoints */
@media (min-width: 576px) {
  .birthday-card {
    padding: .75rem 1rem;
  }
}

@media (max-width: 575.98px) {
  main.container {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .section-card {
    min-height: 4.75rem;
  }

  .btn {
    min-height: 2.65rem;
  }

  .vidyam-navbar {
    min-height: 60px;
    padding: .2rem 0;
  }

  .vidyam-wordmark {
    gap: .35rem;
  }

  .vidyam-wordmark .vidyam-logo,
  body #header .vidyam-logo {
    width: 46px;
  }

  .vidyam-navbar-account {
    gap: .5rem !important;
  }

  .vidyam-navbar-username {
    max-width: 5rem;
  }

  .table-responsive > .table {
    min-width: 100%;
  }
}

/* Accessibility and reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .metric-link:hover,
  .section-card:hover {
    transform: none;
  }
}