/* ═══════════════════════════════════════════════════════
   eobs — brand stylesheet
   Palette: purple → blue → green (three-stop gradient)
     --eobs-purple:      #7c3aed   violet-600
     --eobs-purple-dark: #5b21b6   violet-800
     --eobs-blue:        #2563eb   blue-600
     --eobs-blue-light:  #3b82f6   blue-500
     --eobs-green:       #10b981   emerald-500
     --eobs-green-dark:  #059669   emerald-600
     --eobs-ink:         #1e1b4b   indigo-950
     --eobs-soft:        #f5f3ff   violet-50
     --eobs-border:      #ede9fe   violet-100
     --eobs-green-soft:  #d1fae5   emerald-100
     --eobs-green-border:#a7f3d0   emerald-200
═══════════════════════════════════════════════════════ */

:root {
  --eobs-purple:       #7c3aed;
  --eobs-purple-dark:  #5b21b6;
  --eobs-blue:         #2563eb;
  --eobs-blue-light:   #3b82f6;
  --eobs-green:        #10b981;
  --eobs-green-dark:   #059669;
  --eobs-ink:          #1e1b4b;
  --eobs-soft:         #f5f3ff;
  --eobs-border:       #ede9fe;
  --eobs-green-soft:   #d1fae5;
  --eobs-green-border: #a7f3d0;
  --eobs-gradient:     linear-gradient(135deg, #7c3aed 0%, #2563eb 75%, #10b981 100%);
  --eobs-gradient-r:   linear-gradient(135deg, #10b981 0%, #2563eb 25%, #7c3aed 100%);
}

/* ── Base ─────────────────────────────────────────────── */
body {
  background: #fff;
  color: var(--eobs-ink);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ── Navbar ───────────────────────────────────────────── */
.eobs-navbar {
  background: var(--eobs-gradient) !important;
  border-bottom: none;
  box-shadow: 0 2px 16px rgba(124, 58, 237, .25);
  padding: .75rem 1.5rem;
}

.eobs-navbar .navbar-brand {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -.5px;
  color: #fff !important;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.eobs-navbar .navbar-brand .brand-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.brand-eobs  { color: #fff; }

.eobs-navbar .user-pill {
  background: rgba(255,255,255,.15);
  border-radius: 2rem;
  padding: .3rem .85rem;
  font-size: .85rem;
  color: rgba(255,255,255,.9);
  display: flex;
  align-items: center;
  gap: .4rem;
}

.eobs-navbar .btn-logout {
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.3);
  color: #fff;
  border-radius: 2rem;
  padding: .3rem 1rem;
  font-size: .85rem;
  transition: background .15s;
}
.eobs-navbar .btn-logout:hover {
  background: rgba(255,255,255,.3);
  color: #fff;
}

/* ── Sidebar ──────────────────────────────────────────── */
.eobs-sidebar {
  background: #fff;
  border-right: 1px solid var(--eobs-border);
  min-height: calc(100vh - 62px);
  padding: 1.25rem .75rem;
}

.eobs-sidebar .nav-label {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #9ca3af;
  padding: .5rem .75rem .25rem;
}

.eobs-sidebar .nav-link {
  color: #4b5563;
  border-radius: .5rem;
  padding: .5rem .75rem;
  font-size: .9rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  transition: all .15s;
}

.eobs-sidebar .nav-link i {
  font-size: 1rem;
  width: 1.25rem;
  text-align: center;
  flex-shrink: 0;
}

.eobs-sidebar .nav-link:hover {
  background: var(--eobs-soft);
  color: var(--eobs-purple);
}

.eobs-sidebar .nav-link.active {
  background: var(--eobs-soft);
  color: var(--eobs-purple);
  font-weight: 600;
}

.eobs-sidebar .nav-link.active i {
  color: var(--eobs-purple);
}

.eobs-sidebar .nav-link.link-export {
  color: var(--eobs-green-dark);
}
.eobs-sidebar .nav-link.link-export:hover {
  background: var(--eobs-green-soft);
  color: var(--eobs-green-dark);
}

.eobs-sidebar hr {
  border-color: var(--eobs-border);
  margin: .5rem 0;
}

/* ── Sidebar section collapse toggles ────────────────── */
.eobs-sidebar .nav-label.sidebar-toggle {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.eobs-sidebar .nav-label.sidebar-toggle:hover {
  color: #6b7280;
}
.eobs-sidebar .nav-label.sidebar-toggle .toggle-icon {
  font-size: .6rem;
  transition: transform .2s ease;
  margin-left: auto;
  flex-shrink: 0;
}
.eobs-sidebar .nav-label.sidebar-toggle[aria-expanded="false"] .toggle-icon {
  transform: rotate(-90deg);
}

/* ── Sidebar collapse ─────────────────────────────────── */
.eobs-sidebar {
  width: 220px;
  flex-shrink: 0;
  transition: width .2s ease, padding .2s ease;
  overflow: hidden;
}
.eobs-sidebar.sidebar-collapsed {
  width: 54px;
  padding-left: .5rem;
  padding-right: .5rem;
}
.eobs-sidebar.sidebar-collapsed .nav-text,
.eobs-sidebar.sidebar-collapsed .nav-label,
.eobs-sidebar.sidebar-collapsed hr {
  display: none;
}
.eobs-sidebar.sidebar-collapsed .nav-link {
  justify-content: center;
  padding-left: .5rem;
  padding-right: .5rem;
}
.eobs-sidebar.sidebar-collapsed .nav-link i {
  width: auto;
  font-size: 1.15rem;
}
.eobs-sidebar.sidebar-collapsed .nav-link[title] {
  position: relative;
}

/* Toggle button in navbar */
.sidebar-toggle-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.25rem;
  padding: .25rem .5rem;
  border-radius: .375rem;
  cursor: pointer;
  opacity: .8;
  transition: opacity .15s;
  line-height: 1;
}
.sidebar-toggle-btn:hover { opacity: 1; }

/* ── Content area ─────────────────────────────────────── */
.eobs-content {
  padding: 1.75rem 2rem;
  background: #fff;
}

/* ── Cards ────────────────────────────────────────────── */
.card {
  border: 1px solid var(--eobs-border);
  border-radius: .75rem;
  box-shadow: 0 1px 4px rgba(124, 58, 237, .06);
}

.card-header {
  background: var(--eobs-soft);
  border-bottom: 1px solid var(--eobs-border);
  border-radius: .75rem .75rem 0 0 !important;
  font-weight: 600;
  color: var(--eobs-ink);
}

/* Stat cards */
.stat-card .stat-icon {
  width: 52px;
  height: 52px;
  border-radius: .75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.stat-card .stat-icon.purple { background: #ede9fe; color: var(--eobs-purple); }
.stat-card .stat-icon.blue   { background: #dbeafe; color: var(--eobs-blue); }
.stat-card .stat-icon.green  { background: var(--eobs-green-soft); color: var(--eobs-green-dark); }
.stat-card .stat-icon.indigo { background: #e0e7ff; color: #4338ca; }

/* ── Buttons ──────────────────────────────────────────── */
.btn-primary {
  background: var(--eobs-gradient);
  border: none;
  border-radius: .5rem;
  font-weight: 500;
  transition: opacity .15s, box-shadow .15s;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--eobs-gradient);
  opacity: .9;
  box-shadow: 0 4px 14px rgba(124,58,237,.35);
}

.btn-outline-primary {
  border-color: var(--eobs-purple);
  color: var(--eobs-purple);
  border-radius: .5rem;
}
.btn-outline-primary:hover {
  background: var(--eobs-purple);
  border-color: var(--eobs-purple);
  color: #fff;
}

.btn-outline-secondary { border-radius: .5rem; }
.btn-outline-danger    { border-radius: .5rem; }

/* ── Badges ───────────────────────────────────────────── */
.badge.bg-primary { background: var(--eobs-gradient) !important; }
.badge.bg-danger  { background: #dc2626 !important; }

/* ── Tabs (settings) ──────────────────────────────────── */
.nav-tabs {
  border-bottom-color: var(--eobs-border);
}
.nav-tabs .nav-link {
  color: #6b7280;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: .5rem 1.1rem;
  font-size: .9rem;
}
.nav-tabs .nav-link:hover {
  color: var(--eobs-purple);
  border-bottom-color: var(--eobs-border);
  background: none;
}
.nav-tabs .nav-link.active {
  color: var(--eobs-purple);
  border-bottom: 2px solid var(--eobs-purple);
  font-weight: 600;
  background: none;
}

/* ── Tables ───────────────────────────────────────────── */
.table thead th {
  background: var(--eobs-soft);
  color: var(--eobs-ink);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--eobs-border);
}
.table-hover tbody tr:hover {
  background: var(--eobs-soft);
}

/* ── Alerts ───────────────────────────────────────────── */
.alert-success {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #15803d;
}
.alert-danger {
  background: #fff1f2;
  border-color: #fecdd3;
  color: #be123c;
}
.alert-info {
  background: var(--eobs-soft);
  border-color: var(--eobs-border);
  color: var(--eobs-purple);
}

/* ── Page headings ────────────────────────────────────── */
.page-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--eobs-ink);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.page-heading i { color: var(--eobs-purple); }

/* ── Form controls ────────────────────────────────────── */
.form-control:focus, .form-select:focus {
  border-color: var(--eobs-purple);
  box-shadow: 0 0 0 .2rem rgba(124,58,237,.15);
}

.form-check-input:checked {
  background-color: var(--eobs-purple);
  border-color: var(--eobs-purple);
}

/* ── Login page ───────────────────────────────────────── */
.login-wrap {
  min-height: calc(100vh - 38px);
  background: #fff;
  display: flex;
  align-items: stretch;
}

.login-brand-panel {
  background: var(--eobs-gradient);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 2rem;
  color: #fff;
  flex: 0 0 42%;
}

.login-brand-panel .big-logo {
  width: 90px;
  height: 90px;
  margin-bottom: 1.5rem;
}

.login-brand-panel h1 {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: .25rem;
}
.login-brand-panel h1 span { opacity: .65; font-weight: 400; }
.login-brand-panel p {
  opacity: .75;
  font-size: .95rem;
  max-width: 260px;
  text-align: center;
  line-height: 1.5;
}

.login-form-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-form-box {
  width: 100%;
  max-width: 400px;
}

.login-form-box h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--eobs-ink);
  margin-bottom: .25rem;
}

.login-form-box .sub {
  color: #6b7280;
  font-size: .9rem;
  margin-bottom: 2rem;
}

.login-form-box .input-group-text {
  background: var(--eobs-soft);
  border-color: #e5e7eb;
  color: var(--eobs-purple);
}

.login-form-box .form-control {
  border-color: #e5e7eb;
}

/* ── Responsive: stack login panels on small screens ──── */
@media (max-width: 767px) {
  .login-brand-panel { flex: none; width: 100%; padding: 2rem 1.5rem 1.5rem; }
  .login-wrap { flex-direction: column; }
  .login-brand-panel .big-logo { width: 60px; height: 60px; margin-bottom: 1rem; }
  .login-brand-panel h1 { font-size: 1.8rem; }
  .login-brand-panel p { display: none; }
}


/* ── Footer ───────────────────────────────────────────── */
.eobs-footer {
  background: var(--eobs-ink);
  color: rgba(255,255,255,.65);
  font-size: .78rem;
  padding: .75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
}

.eobs-footer-links {
  display: flex;
  gap: 1.25rem;
}

.eobs-footer-links a {
  color: rgba(255,255,255,.65);
  text-decoration: none;
  transition: color .15s;
}

.eobs-footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ── Students list: bigger name, smaller email (desktop) ── */
@media (min-width: 768px) {
  #studentTable tbody td:nth-child(2) { font-size: 1.05rem; white-space: nowrap; }
  #studentTable tbody td:nth-child(3) { font-size: .72rem; }
}

/* ── Mobile off-canvas sidebar (<768px) ────────────────── */
.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .5);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity .2s ease, visibility .2s ease;
}
.sidebar-backdrop.show {
  opacity: 1;
  visibility: visible;
}

.sidebar-close-btn {
  display: none;
  position: absolute;
  top: .5rem;
  right: .5rem;
  background: none;
  border: none;
  color: #6b7280;
  font-size: 1.25rem;
  padding: .25rem .5rem;
  border-radius: .375rem;
  line-height: 1;
  cursor: pointer;
}
.sidebar-close-btn:hover { color: var(--eobs-purple); }

/* ── Scrollable tabs on narrow screens ─────────────────── */
.nav-tabs-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.nav-tabs-scroll::-webkit-scrollbar { height: 4px; }
.nav-tabs-scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,.15); border-radius: 2px; }
.nav-tabs-scroll .nav-link { white-space: nowrap; }

@media (max-width: 767.98px) {
  /* Student portal profile photo */
  .portal-profile-photo { width: 88px !important; height: 110px !important; }

  /* Student edit form photo */
  .student-form-photo { width: 72px !important; height: 90px !important; }
  .student-form-photo img { width: 72px !important; height: 90px !important; }

  /* Tighter navbar */
  .eobs-navbar { padding: .5rem .75rem; }
  .eobs-navbar .navbar-brand { font-size: 1.1rem; gap: .35rem; }
  .eobs-navbar .navbar-brand .brand-icon { width: 28px; height: 28px; }
  .eobs-navbar .user-pill { padding: .25rem .6rem; font-size: .75rem; max-width: 45vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .eobs-navbar .user-pill .small { display: none; }
  .sidebar-toggle-btn { font-size: 1.1rem; padding: .2rem .4rem; }

  /* Content padding */
  .eobs-content { padding: 1rem .9rem; min-width: 0; max-width: 100vw; overflow-x: hidden; }
  .eobs-content .table-responsive { max-width: 100%; overflow-x: auto; }
  .eobs-content .table { word-break: break-word; }

  /* Footer */
  .eobs-footer { padding: .6rem .9rem; font-size: .7rem; }
  .eobs-footer-links { gap: .85rem; }

  /* Sidebar becomes an off-canvas drawer */
  .eobs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    width: 260px;
    max-width: 85vw;
    z-index: 1050;
    transform: translateX(-100%);
    transition: transform .25s ease;
    overflow-y: auto;
    box-shadow: 2px 0 16px rgba(0, 0, 0, .15);
    padding: 2.75rem .75rem 1.25rem;
  }
  .eobs-sidebar.sidebar-open {
    transform: translateX(0);
  }
  /* Neutralize desktop collapsed state on mobile */
  .eobs-sidebar.sidebar-collapsed {
    width: 260px;
    max-width: 85vw;
    padding: 2.75rem .75rem 1.25rem;
  }
  .eobs-sidebar.sidebar-collapsed .nav-text,
  .eobs-sidebar.sidebar-collapsed .nav-label,
  .eobs-sidebar.sidebar-collapsed hr {
    display: revert;
  }
  .eobs-sidebar.sidebar-collapsed .nav-link {
    justify-content: flex-start;
    padding-left: .75rem;
    padding-right: .75rem;
  }

  .sidebar-close-btn { display: block; }
}