/* ==========================================================
   EDEXCEL SYSTEM UI
   Shared visual system for admin / teacher / student portals.
   Based on the public index.php design language.
   ========================================================== */
:root {
    --page-bg: #f7f8fd;
    --surface: #ffffff;
    --surface-soft: #f3f5fb;
    --text: #172033;
    --muted: #65718a;
    --primary: #5161ce;
    --primary-dark: #3f4fae;
    --accent: #f8b400;
    --accent-dark: #d99b00;
    --success: #16a36a;
    --danger: #dc4c64;
    --warning: #e9a500;
    --info: #0ea5c7;
    --panel-border: rgba(23, 32, 51, 0.08);
    --panel-border-strong: rgba(23, 32, 51, 0.13);
    --shadow-xs: 0 3px 12px rgba(23, 32, 51, 0.05);
    --shadow-sm: 0 10px 30px rgba(23, 32, 51, 0.07);
    --shadow-md: 0 18px 45px rgba(23, 32, 51, 0.11);
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 64px;
}

[data-bs-theme="dark"] {
    --page-bg: #10131b;
    --surface: #191e2b;
    --surface-soft: #222838;
    --text: #f5f7fb;
    --muted: #aeb8cb;
    --primary: #6878e3;
    --primary-dark: #5364d1;
    --accent: #f8b400;
    --accent-dark: #e0a100;
    --panel-border: rgba(255, 255, 255, 0.08);
    --panel-border-strong: rgba(255, 255, 255, 0.13);
    --shadow-xs: 0 3px 12px rgba(0, 0, 0, 0.18);
    --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 18px 45px rgba(0, 0, 0, 0.30);
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }
body {
    min-height: 100vh;
    background:
        linear-gradient(135deg, rgba(248, 180, 0, 0.07), transparent 28%),
        linear-gradient(225deg, rgba(81, 97, 206, 0.08), transparent 34%),
        var(--page-bg) !important;
    color: var(--text) !important;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif !important;
    line-height: 1.6;
    transition: background-color .25s ease, color .25s ease;
}

body, .main-content, .sidebar, .card, .modal-content, .dropdown-menu,
.form-control, .form-select, .input-group-text, .table, .list-group-item {
    transition: background-color .25s ease, color .25s ease, border-color .25s ease, box-shadow .25s ease;
}

a { color: inherit; }
::selection { background: rgba(81, 97, 206, .18); }

/* ---------- Top navigation ---------- */
.navbar.navbar-dark.bg-dark {
    min-height: var(--nav-height);
    background: rgba(81, 97, 206, 0.97) !important;
    border: 0 !important;
    box-shadow: 0 6px 22px rgba(23, 32, 51, 0.12);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 8px 14px;
    position: sticky;
    top: 0;
    z-index: 1050;
}

.navbar .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: .2px;
    color: #fff !important;
    padding: 8px 12px;
    border-radius: 12px;
    transition: var(--transition);
}
.navbar .navbar-brand:hover { background: rgba(255,255,255,.10); transform: translateY(-1px); }

.navbar .nav-link {
    color: rgba(255,255,255,.78) !important;
    font-size: .88rem;
    font-weight: 600;
    padding: 9px 11px !important;
    margin: 2px;
    border-radius: 11px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.navbar .nav-link:hover,
.navbar .nav-link.active,
.navbar .nav-item.show > .nav-link {
    color: #fff !important;
    background: rgba(255,255,255,.14);
}
.navbar .nav-link i { font-size: .95rem; }
.navbar .dropdown-menu {
    margin-top: 8px;
    min-width: 205px;
    padding: 7px;
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    box-shadow: var(--shadow-md);
}
.navbar .dropdown-item {
    border-radius: 9px;
    color: var(--text);
    font-size: .88rem;
    font-weight: 500;
    padding: 9px 11px;
}
.navbar .dropdown-item:hover,
.navbar .dropdown-item.active {
    color: var(--primary) !important;
    background: rgba(81,97,206,.09) !important;
}
.navbar .dropdown-divider { border-color: var(--panel-border); }
.navbar .navbar-toggler {
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 10px;
    padding: 7px 9px;
}
.navbar .navbar-toggler:focus { box-shadow: 0 0 0 3px rgba(248,180,0,.18); }
.navbar .form-check-input {
    width: 2.25rem;
    height: 1.2rem;
    cursor: pointer;
}
.navbar .form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }
.navbar .form-check-label { color: rgba(255,255,255,.82) !important; cursor: pointer; }

/* ---------- Main shell ---------- */
body > .container-fluid {
    padding-left: 0;
    padding-right: 0;
}

.sidebar {
    min-height: calc(100vh - var(--nav-height)) !important;
    background: rgba(255,255,255,.82) !important;
    border-right: 1px solid var(--panel-border) !important;
    padding: 18px 12px !important;
    position: sticky;
    top: var(--nav-height);
    align-self: flex-start;
    overflow-y: auto;
    max-height: calc(100vh - var(--nav-height));
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
[data-bs-theme="dark"] .sidebar {
    background: rgba(25,30,43,.88) !important;
    border-right-color: var(--panel-border) !important;
}

.sidebar .nav { gap: 3px; }
.sidebar .nav-item { width: 100%; }
.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--muted) !important;
    font-size: .88rem;
    font-weight: 600;
    padding: 10px 12px !important;
    margin: 1px 0;
    border-radius: 11px;
    transition: var(--transition);
}
.sidebar .nav-link i { width: 19px; text-align: center; font-size: 1rem; }
.sidebar .nav-link:hover {
    color: var(--primary) !important;
    background: rgba(81,97,206,.08) !important;
    transform: translateX(2px);
}
.sidebar .nav-link.active {
    color: #fff !important;
    background: linear-gradient(135deg, var(--primary), #6878df) !important;
    box-shadow: 0 8px 20px rgba(81,97,206,.20);
}
.sidebar .nav-link.active:hover { color: #fff !important; transform: translateX(0); }
.sidebar .nav .nav .nav-link {
    font-size: .82rem;
    font-weight: 500;
    padding: 7px 10px !important;
    margin-left: 7px;
}

.main-content {
    min-width: 0;
    padding: 24px 26px 40px !important;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb-nav {
    margin-bottom: 18px;
    padding: 0 !important;
    font-size: .82rem;
}
.breadcrumb {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    margin: 0;
    padding: 7px 11px;
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    box-shadow: var(--shadow-xs);
}
.breadcrumb-item { color: var(--muted); }
.breadcrumb-item a { color: var(--primary) !important; text-decoration: none !important; font-weight: 600; }
.breadcrumb-item.active { color: var(--text); font-weight: 600; }

/* ---------- Page headings ---------- */
.main-content > h1,
.main-content > h2,
.main-content > .page-header h1,
.main-content .page-title {
    color: var(--text);
    font-weight: 800;
    letter-spacing: -.025em;
}
.main-content > h1 { font-size: clamp(1.55rem, 2.2vw, 2rem); margin-bottom: 1.1rem !important; }
.main-content > h1 i { color: var(--primary); margin-right: 7px; }

/* ---------- Cards / panels ---------- */
.card,
.widget-card,
.modal-content,
.list-group,
.alert {
    background: var(--surface) !important;
    color: var(--text);
    border: 1px solid var(--panel-border) !important;
}
.card {
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-sm); }
.card-header {
    background: var(--surface-soft) !important;
    color: var(--text) !important;
    border-bottom: 1px solid var(--panel-border) !important;
    font-weight: 700;
}
.card-footer { background: transparent !important; border-top: 1px solid var(--panel-border) !important; }
.card-title { font-weight: 750; color: var(--text); }
.card-text { color: var(--muted); }

.widget-card {
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    position: relative;
}
.widget-card::before {
    content: "";
    position: absolute;
    inset: 0 auto 0 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
}
.widget-card .widget-icon { color: var(--primary); opacity: .82; }
.widget-card .widget-value { color: var(--text); font-weight: 800; }

/* ---------- Buttons ---------- */
.btn {
    border-radius: 10px !important;
    font-weight: 650 !important;
    letter-spacing: .005em;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { box-shadow: 0 0 0 4px rgba(81,97,206,.16) !important; }
.btn-primary {
    color: #172033 !important;
    background: var(--accent) !important;
    border-color: var(--accent) !important;
    box-shadow: 0 6px 16px rgba(248,180,0,.18);
}
.btn-primary:hover { background: var(--accent-dark) !important; border-color: var(--accent-dark) !important; color: #172033 !important; box-shadow: 0 9px 22px rgba(248,180,0,.25); }
.btn-secondary { background: var(--primary) !important; border-color: var(--primary) !important; color: #fff !important; }
.btn-secondary:hover { background: var(--primary-dark) !important; border-color: var(--primary-dark) !important; }
.btn-outline-primary { color: var(--primary) !important; border-color: var(--primary) !important; }
.btn-outline-primary:hover { color: #fff !important; background: var(--primary) !important; }
.btn-outline-secondary { color: var(--muted) !important; border-color: var(--panel-border-strong) !important; }
.btn-outline-secondary:hover { color: var(--text) !important; background: var(--surface-soft) !important; }
.btn-warning { background: var(--accent) !important; border-color: var(--accent) !important; color: #172033 !important; }
.btn-danger { background: var(--danger) !important; border-color: var(--danger) !important; }
.btn-success { background: var(--success) !important; border-color: var(--success) !important; }

/* ---------- Forms ---------- */
.form-label {
    color: var(--text);
    font-size: .84rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.form-text { color: var(--muted) !important; }
.form-control,
.form-select,
.input-group-text {
    min-height: 42px;
    background: var(--surface) !important;
    color: var(--text) !important;
    border: 1px solid var(--panel-border-strong) !important;
    border-radius: 10px !important;
}
.form-control::placeholder { color: var(--muted); opacity: .75; }
.form-control:focus,
.form-select:focus {
    border-color: rgba(81,97,206,.55) !important;
    box-shadow: 0 0 0 4px rgba(81,97,206,.10) !important;
}
.input-group-text { color: var(--muted) !important; background: var(--surface-soft) !important; }
.form-check-input { border-color: var(--panel-border-strong); }
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }

/* ---------- Tables ---------- */
.table-responsive {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    border: 1px solid var(--panel-border);
    background: var(--surface);
}
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text);
    --bs-table-border-color: var(--panel-border);
    margin-bottom: 0;
    vertical-align: middle;
}
.table > :not(caption) > * > * { padding: 12px 13px; }
.table thead th {
    color: var(--muted) !important;
    background: var(--surface-soft) !important;
    border-bottom: 1px solid var(--panel-border-strong) !important;
    font-size: .74rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .045em;
    white-space: nowrap;
}
.table tbody td { color: var(--text); border-color: var(--panel-border) !important; }
.table-hover > tbody > tr:hover > * {
    --bs-table-accent-bg: rgba(81,97,206,.045);
    color: var(--text);
}
.table-dark,
.table-dark > th,
.table-dark > td {
    --bs-table-bg: var(--primary) !important;
    --bs-table-color: #fff !important;
    background: var(--primary) !important;
    color: #fff !important;
}
.table-actions { white-space: nowrap; }
.table-actions .btn { margin-right: 4px; }

/* ---------- Badges / alerts ---------- */
.badge { border-radius: 999px; font-weight: 700; padding: .42em .7em; }
.alert { border-radius: var(--radius-md); box-shadow: var(--shadow-xs); }
.alert-success { color: #087443; background: rgba(22,163,106,.09) !important; }
.alert-danger { color: #a52d43; background: rgba(220,76,100,.09) !important; }
.alert-warning { color: #805d00; background: rgba(248,180,0,.12) !important; }
.alert-info { color: #09677a; background: rgba(14,165,199,.09) !important; }
[data-bs-theme="dark"] .alert-success { color: #7ce2b3; }
[data-bs-theme="dark"] .alert-danger { color: #ff9caf; }
[data-bs-theme="dark"] .alert-warning { color: #ffd86b; }
[data-bs-theme="dark"] .alert-info { color: #79d7ea; }

/* ---------- Pagination ---------- */
.pagination { gap: 4px; }
.pagination .page-link {
    color: var(--primary);
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: 9px !important;
    min-width: 38px;
    text-align: center;
}
.pagination .page-item.active .page-link { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination .page-link:hover { background: rgba(81,97,206,.08); }

/* ---------- Dropdowns / modals ---------- */
.dropdown-menu {
    background: var(--surface);
    border-color: var(--panel-border);
    border-radius: 14px;
    box-shadow: var(--shadow-md);
}
.dropdown-item { color: var(--text); border-radius: 8px; }
.dropdown-item:hover { color: var(--primary); background: rgba(81,97,206,.08); }
.modal-content { border-radius: var(--radius-lg) !important; box-shadow: var(--shadow-md); }
.modal-header,
.modal-footer { border-color: var(--panel-border) !important; }
.modal-title { font-weight: 800; color: var(--text); }
.btn-close { filter: none; }
[data-bs-theme="dark"] .btn-close { filter: invert(1) grayscale(1) brightness(1.8); }

/* ---------- Toast / loader ---------- */
.toast-container { top: 78px !important; right: 18px !important; z-index: 1100; }
.toast { border-radius: 12px !important; box-shadow: var(--shadow-md); overflow: hidden; }
.loader-overlay { background: rgba(16,19,27,.48) !important; backdrop-filter: blur(3px); }

/* ---------- Teacher / people friendly helpers ---------- */
.teacher-grid,
.teacher-profile-grid,
.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}
.teacher-card,
.teacher-profile-card,
.people-card {
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    transition: var(--transition);
}
.teacher-card:hover,
.teacher-profile-card:hover,
.people-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); border-color: rgba(81,97,206,.22); }

/* ---------- Utility sections commonly used by timetable pages ---------- */
.section-panel {
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    padding: 18px;
}
.page-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}
.page-toolbar .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-card {
    background: var(--surface);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    padding: 16px;
    margin-bottom: 18px;
}

/* ---------- Dark Bootstrap components ---------- */
[data-bs-theme="dark"] .text-dark { color: var(--text) !important; }
[data-bs-theme="dark"] .text-muted { color: var(--muted) !important; }
[data-bs-theme="dark"] .bg-light { background: var(--surface-soft) !important; }
[data-bs-theme="dark"] .bg-white { background: var(--surface) !important; }
[data-bs-theme="dark"] .list-group-item { background: var(--surface); color: var(--text); border-color: var(--panel-border); }
[data-bs-theme="dark"] .table-light > * { background: var(--surface-soft) !important; color: var(--text) !important; }
[data-bs-theme="dark"] .table-dark { --bs-table-bg: #303a67 !important; background: #303a67 !important; }
[data-bs-theme="dark"] .navbar .dropdown-item:hover { background: rgba(104,120,227,.14) !important; }

/* ---------- Responsive ---------- */
@media (max-width: 1199px) {
    .navbar .nav-link { padding-left: 8px !important; padding-right: 8px !important; font-size: .82rem; }
    .sidebar { padding-left: 9px !important; padding-right: 9px !important; }
    .sidebar .nav-link { font-size: .82rem; padding-left: 9px !important; padding-right: 9px !important; }
    .main-content { padding-left: 20px !important; padding-right: 20px !important; }
}

@media (max-width: 991.98px) {
    .navbar.navbar-dark.bg-dark { position: sticky; }
    .navbar .navbar-collapse {
        margin-top: 8px;
        padding: 8px;
        border-radius: 14px;
        background: rgba(50,61,135,.96);
    }
    .navbar .nav-link { width: 100%; justify-content: flex-start; }
    .navbar .dropdown-menu { margin-top: 2px; background: rgba(255,255,255,.98); }
    .sidebar { display: none !important; }
    .main-content { width: 100%; padding: 20px 16px 32px !important; }
}

@media (max-width: 767.98px) {
    :root { --nav-height: 58px; }
    body { font-size: .92rem; }
    .navbar.navbar-dark.bg-dark { min-height: var(--nav-height); padding: 7px 10px; }
    .navbar .navbar-brand { font-size: .98rem; }
    .main-content { padding: 16px 12px 28px !important; }
    .breadcrumb { max-width: 100%; }
    .card-body { padding: 14px; }
    .table-responsive { border-radius: 12px; }
    .table { min-width: 650px; font-size: .82rem; }
    .form-control, .form-select { min-height: 44px; }
    .btn { min-height: 42px; }
    .page-toolbar { align-items: stretch; }
    .page-toolbar .actions { width: 100%; }
    .page-toolbar .actions .btn { flex: 1 1 auto; }
}

@media (max-width: 575.98px) {
    .navbar .navbar-collapse { max-height: calc(100vh - 70px); overflow-y: auto; }
    .main-content > h1 { font-size: 1.45rem; }
    .main-content > h1.mb-4 { margin-bottom: 1rem !important; }
    .table { min-width: 600px; }
    .table-actions .btn { margin-bottom: 3px; }
    .modal-dialog { margin: .6rem; }
    .toast-container { left: 10px !important; right: 10px !important; }
}

@media (hover: none) {
    .btn:hover, .sidebar .nav-link:hover, .card:hover, .teacher-card:hover, .teacher-profile-card:hover { transform: none; }
}

@media print {
    .navbar, .sidebar, .breadcrumb-nav, .no-print, .toast-container, .loader-overlay { display: none !important; }
    .main-content { width: 100% !important; padding: 0 !important; }
    body { background: #fff !important; color: #000 !important; }
    .card, .table-responsive { box-shadow: none !important; }
}

/* ---------- Teacher management ---------- */
.teacher-page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.teacher-page-title{margin:0!important;display:flex;align-items:center;gap:10px}
.teacher-page-title i{color:var(--primary)}
.teacher-page-subtitle{color:var(--muted);margin:5px 0 0;font-size:.9rem}
.teacher-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:20px}
.teacher-stat{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-md);padding:16px 18px;box-shadow:var(--shadow-xs);display:flex;align-items:center;gap:13px}
.teacher-stat-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(81,97,206,.1);color:var(--primary);font-size:1.15rem;flex:none}
.teacher-stat strong{display:block;font-size:1.3rem;line-height:1.1;color:var(--text)}
.teacher-stat span{display:block;color:var(--muted);font-size:.76rem;margin-top:3px}
.teacher-toolbar{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);padding:14px;box-shadow:var(--shadow-xs);margin-bottom:18px}
.teacher-toolbar-grid{display:grid;grid-template-columns:minmax(220px,1fr) minmax(180px,260px) auto;gap:10px;align-items:center}
.teacher-search{position:relative}.teacher-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);z-index:2}.teacher-search input{padding-left:39px}
.teacher-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:18px}
.teacher-card{position:relative;background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:20px;overflow:hidden;display:flex;flex-direction:column;min-width:0;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.teacher-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(81,97,206,.22)}
.teacher-card-top{display:flex;align-items:center;gap:14px;min-width:0;margin-bottom:14px}
.teacher-avatar{width:68px;height:68px;border-radius:50%;overflow:hidden;flex:none;background:linear-gradient(135deg,rgba(81,97,206,.14),rgba(248,180,0,.18));border:3px solid var(--surface-soft);box-shadow:0 5px 16px rgba(23,32,51,.10);display:grid;place-items:center}
.teacher-avatar img{width:100%;height:100%;object-fit:cover}.teacher-avatar-initials{font-weight:800;color:var(--primary);font-size:1.05rem}
.teacher-card-name{font-size:1rem;font-weight:800;color:var(--text);line-height:1.25;margin:0;word-break:break-word}.teacher-card-email{font-size:.76rem;color:var(--muted);margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.teacher-subjects{display:flex;flex-wrap:wrap;gap:6px;min-height:28px;margin-bottom:15px}.teacher-subject{font-size:.69rem;font-weight:700;color:var(--primary);background:rgba(81,97,206,.09);border:1px solid rgba(81,97,206,.12);border-radius:999px;padding:4px 8px}.teacher-subject.more{color:var(--muted);background:var(--surface-soft);border-color:var(--panel-border)}
.teacher-card-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:auto}.teacher-card-actions .btn{font-size:.78rem}.teacher-card-actions .btn:first-child{grid-column:span 2}
.teacher-empty{grid-column:1/-1;text-align:center;padding:42px 20px;background:var(--surface);border:1px dashed var(--panel-border-strong);border-radius:var(--radius-lg);color:var(--muted)}
.teacher-form-card{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:22px}
.teacher-form-section{padding:0 0 20px;margin-bottom:20px;border-bottom:1px solid var(--panel-border)}.teacher-form-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.teacher-form-section h5{font-weight:800;color:var(--text);margin-bottom:14px}.teacher-form-section h5 i{color:var(--primary);margin-right:6px}
.subject-check-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px}.subject-check{border:1px solid var(--panel-border);border-radius:11px;padding:9px 11px;background:var(--surface-soft);transition:var(--transition)}.subject-check:hover{border-color:rgba(81,97,206,.25)}.subject-check .form-check{margin:0}.subject-check .form-check-label{font-size:.85rem;color:var(--text);cursor:pointer}
.teacher-photo-box{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:230px;background:var(--surface-soft);border:1px dashed var(--panel-border-strong);border-radius:var(--radius-md);padding:18px;text-align:center}.teacher-photo-preview{width:130px;height:130px;border-radius:50%;object-fit:cover;border:4px solid var(--surface);box-shadow:var(--shadow-sm);margin-bottom:12px}.teacher-photo-placeholder{width:110px;height:110px;border-radius:50%;display:grid;place-items:center;background:rgba(81,97,206,.1);color:var(--primary);font-size:2.2rem;margin-bottom:12px}
.teacher-profile-shell{max-width:1120px;margin:0 auto}.teacher-profile-card{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);padding:28px;display:flex;gap:24px;align-items:center;margin-bottom:24px}.teacher-profile-avatar{width:138px;height:138px;border-radius:50%;overflow:hidden;flex:none;background:var(--surface-soft);border:5px solid var(--surface-soft);box-shadow:var(--shadow-sm)}.teacher-profile-avatar img{width:100%;height:100%;object-fit:cover}.teacher-profile-info{min-width:0}.teacher-profile-info h1{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:850;color:var(--text);margin:0 0 4px}.teacher-profile-role{color:var(--muted);font-size:.9rem;margin-bottom:13px}.teacher-profile-detail{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.88rem;margin:5px 0}.teacher-profile-detail strong{color:var(--text);min-width:72px}.teacher-profile-detail a{color:var(--primary);text-decoration:none}.teacher-profile-subjects{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.teacher-week-card{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.teacher-week-card .table-responsive{margin:0}.teacher-week-table{margin:0!important}.teacher-week-table th{background:var(--surface-soft)!important;color:var(--muted)!important;border-bottom:1px solid var(--panel-border)!important;font-size:.7rem!important;letter-spacing:.05em}.teacher-week-table td{border-color:var(--panel-border)!important;color:var(--text)!important}.teacher-week-table tbody tr:hover{background:rgba(81,97,206,.035)!important}.teacher-section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 13px}.teacher-section-heading h2{font-size:1.15rem;font-weight:800;color:var(--text);margin:0}.teacher-section-heading span{font-size:.8rem;color:var(--muted)}.teacher-whatsapp{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:6px 11px;background:#25d366;color:#fff!important;font-size:.73rem;font-weight:700;text-decoration:none}.teacher-whatsapp:hover{background:#1da851;color:#fff!important}
@media (max-width:900px){.teacher-stats{grid-template-columns:1fr 1fr}.teacher-toolbar-grid{grid-template-columns:1fr 1fr}.teacher-toolbar-grid .btn{width:100%}.teacher-toolbar-grid .teacher-search{grid-column:1/-1}}
@media (max-width:640px){.teacher-stats{grid-template-columns:1fr}.teacher-grid{grid-template-columns:1fr}.teacher-page-header{align-items:stretch}.teacher-page-header>.btn{width:100%}.teacher-toolbar-grid{grid-template-columns:1fr}.teacher-toolbar-grid .teacher-search{grid-column:auto}.teacher-form-card{padding:16px}.teacher-profile-card{padding:20px;flex-direction:column;text-align:center}.teacher-profile-detail{justify-content:center}.teacher-profile-subjects{justify-content:center}.teacher-profile-avatar{width:112px;height:112px}.teacher-section-heading{align-items:flex-start;flex-direction:column}.teacher-week-table{min-width:760px}}

/* ---------- Classes & subjects management ---------- */
.page-toolbar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:20px;flex-wrap:wrap}
.page-toolbar .actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.page-title{margin:0!important;font-size:clamp(1.55rem,2.5vw,2rem);font-weight:850;letter-spacing:-.03em;color:var(--text)}
.page-title i{color:var(--primary);margin-right:7px}
.page-subtitle{margin:5px 0 0;color:var(--muted);font-size:.9rem}
.management-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}
.management-stats-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.management-stat{min-width:0;background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-md);box-shadow:var(--shadow-xs);padding:15px 16px;display:flex;align-items:center;gap:12px}
.management-stat-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(81,97,206,.1);color:var(--primary);font-size:1.1rem;flex:none}
.management-stat strong{display:block;color:var(--text);font-size:1.25rem;line-height:1.1}.management-stat small{display:block;color:var(--muted);font-size:.75rem;margin-top:3px}
.management-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px;background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);margin-bottom:18px}
.management-search{position:relative;flex:1;min-width:220px}.management-search i{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--muted);z-index:2}.management-search .form-control{padding-left:39px}
.management-toolbar-note{color:var(--muted);font-size:.78rem;white-space:nowrap}.management-toolbar-note i{color:var(--primary);margin-right:4px}
.management-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:17px}
.management-card{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:19px;display:flex;flex-direction:column;min-width:0;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition)}
.management-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(81,97,206,.22)}
.management-card-head{display:flex;align-items:center;gap:12px;min-width:0;margin-bottom:14px}.management-icon{width:46px;height:46px;flex:none;border-radius:13px;display:grid;place-items:center;color:var(--primary);background:linear-gradient(135deg,rgba(81,97,206,.11),rgba(248,180,0,.12));font-size:1.2rem}.management-card-title-wrap{min-width:0}.management-card h2{margin:0;color:var(--text);font-size:1rem;font-weight:800;line-height:1.25;overflow-wrap:anywhere}.status-pill{display:inline-flex;align-items:center;width:max-content;max-width:100%;margin-top:6px;padding:4px 8px;border-radius:999px;font-size:.66rem;font-weight:750}.status-pill.info{color:#087f9b;background:rgba(14,165,199,.1)}.status-pill.primary{color:var(--primary);background:rgba(81,97,206,.09)}
.management-description{color:var(--muted);font-size:.8rem;line-height:1.55;min-height:50px;margin:0 0 14px}
.management-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-bottom:16px}.management-metrics-2{grid-template-columns:repeat(2,1fr)}.management-metrics>div{background:var(--surface-soft);border:1px solid var(--panel-border);border-radius:10px;padding:9px 7px;text-align:center}.management-metrics strong{display:block;color:var(--text);font-size:1rem;line-height:1.1}.management-metrics span{display:block;color:var(--muted);font-size:.66rem;margin-top:3px}
.management-card-actions{display:grid;grid-template-columns:1fr auto;gap:8px;margin-top:auto}.management-card-actions .btn{font-size:.78rem}.management-empty{grid-column:1/-1;min-height:210px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;border:1px dashed var(--panel-border-strong);border-radius:var(--radius-lg);background:var(--surface);color:var(--muted);text-align:center}.management-empty i{font-size:2rem;color:var(--primary);margin-bottom:4px}.management-empty strong{color:var(--text);font-size:.95rem}.management-empty span{font-size:.78rem}
.form-page-card{max-width:900px;background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);padding:24px}.form-section{padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--panel-border)}.form-section:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}.form-section-title{display:flex;align-items:center;gap:8px;margin:0 0 13px;color:var(--text);font-size:1rem;font-weight:800}.form-section-title i{color:var(--primary)}.form-help{font-size:.75rem;color:var(--muted);margin-top:5px}.choice-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px}.choice-card{height:100%;padding:10px 12px;border:1px solid var(--panel-border);border-radius:11px;background:var(--surface-soft)}.choice-card:hover{border-color:rgba(81,97,206,.25)}
@media (max-width:1000px){.management-stats{grid-template-columns:repeat(2,1fr)}.management-toolbar{align-items:stretch;flex-direction:column}.management-toolbar-note{white-space:normal}}
@media (max-width:640px){.management-stats,.management-stats-3{grid-template-columns:1fr}.management-grid{grid-template-columns:1fr}.page-toolbar .actions{width:100%}.page-toolbar .actions .btn{width:100%}.form-page-card{padding:17px;border-radius:var(--radius-lg)}.management-card{padding:17px}}