/* ============================================================
   School Management System — Main Stylesheet
   ============================================================ */

:root {
    --primary:   #1a6fc4;
    --primary-dark: #155a9e;
    --sidebar-bg: #1e2a3a;
    --sidebar-section: #4a6278;
    --sidebar-active: #1a6fc4;
    --body-bg:   #f5f7fb;
    --card-bg:   #ffffff;
    --border:    #e2e8f0;
    --text:      #1e293b;
    --text-muted:#64748b;
    --success:   #16a34a;
    --danger:    #dc2626;
    --warning:   #d97706;
}

* { box-sizing: border-box; }

body {
    font-family: 'Noto Sans', 'Noto Sans Devanagari', sans-serif;
    background: var(--body-bg);
    color: var(--text);
    font-size: 0.92rem;
}

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
    position: sticky;
    top: 58px;
    height: calc(100vh - 58px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #2d3f54 transparent;
}

.sidebar-section {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--sidebar-section);
    padding: 0.5rem 0.75rem 0.25rem;
    font-weight: 700;
}

.sidebar .nav-link {
    color: #a8bfd4;
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
    transition: all 0.18s;
    font-size: 0.875rem;
}

.sidebar .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sidebar .nav-link.active {
    color: #fff;
    background: var(--sidebar-active);
    font-weight: 600;
}

/* ── Cards ──────────────────────────────────────────────── */
.card {
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.card-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 1.25rem;
    font-weight: 600;
    border-radius: 10px 10px 0 0 !important;
}

/* ── Stat Cards (Dashboard) ─────────────────────────────── */
.stat-card {
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: 0.25;
    position: absolute;
    right: 1rem;
    bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.8rem;
    opacity: 0.85;
    margin-top: 0.3rem;
}

/* ── Tables ─────────────────────────────────────────────── */
.table th {
    background: #f1f5f9;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}

.table td { vertical-align: middle; }

.table-hover tbody tr:hover { background: #f0f7ff; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* ── Form Controls ───────────────────────────────────────── */
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(26,111,196,0.15);
}

.form-label {
    font-weight: 500;
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

/* ── Page Header ─────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border);
}

.page-header h4 {
    margin: 0;
    font-weight: 700;
    color: var(--text);
}

/* ── Badges ──────────────────────────────────────────────── */
.badge-up   { background: #dbeafe; color: #1d4ed8; }
.badge-cbse { background: #dcfce7; color: #15803d; }

/* ── Board selector (Admission form) ─────────────────────── */
.board-option {
    border: 2px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.board-option:hover { border-color: var(--primary); }
.board-option.selected { border-color: var(--primary); background: #eff6ff; }

/* ── Login Page ──────────────────────────────────────────── */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e2a3a 0%, #1a6fc4 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.login-card .school-logo {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar { display: none; }
    main { padding: 1rem !important; }
}

/* ── Print Styles ────────────────────────────────────────── */
@media print {
    .sidebar, .navbar, .btn, .alert { display: none !important; }
    main { padding: 0 !important; }
}