/* ===== TaleemDesk — "Institutional Warmth" Theme ===== */

:root {
    --td-primary: #0d9488;
    --td-primary-dark: #0f766e;
    --td-primary-light: #ccfbf1;
    --td-accent: #f59e0b;
    --td-sidebar-bg: #0f172a;
    --td-sidebar-text: #cbd5e1;
    --td-sidebar-hover: #1e293b;
    --td-body-bg: #f1f5f9;
    --td-card-bg: #ffffff;
    --td-text: #1e293b;
    --td-text-muted: #64748b;
    --td-border: #e2e8f0;
    --sidebar-width: 250px;
    --sidebar-collapsed: 0px;
    --topbar-height: 60px;
}

/* ===== Global ===== */

body {
    background-color: var(--td-body-bg);
    color: var(--td-text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
}

a { color: var(--td-primary); }
a:hover { color: var(--td-primary-dark); }

/* ===== Sidebar ===== */

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--td-sidebar-bg);
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1040;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand i {
    font-size: 1.5rem;
    color: var(--td-primary);
}

.sidebar-nav {
    list-style: none;
    padding: 0.75rem 0;
    margin: 0;
    flex: 1;
}

.sidebar-item {
    margin: 2px 0.5rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.5rem;
    color: var(--td-sidebar-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s ease;
}

.sidebar-link:hover {
    background: var(--td-sidebar-hover);
    color: #fff;
}

.sidebar-link i {
    font-size: 1.125rem;
    width: 1.5rem;
    text-align: center;
}

.sidebar-item.active .sidebar-link {
    background: var(--td-primary);
    color: #fff;
}

/* ===== Main Content ===== */

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

/* ===== Top Bar ===== */

.topbar {
    height: var(--topbar-height);
    background: var(--td-card-bg);
    border-bottom: 1px solid var(--td-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.topbar-left h5 {
    color: var(--td-text);
    font-weight: 600;
}

.topbar-right .btn-link {
    color: var(--td-text);
}

.topbar-right .btn-link:hover {
    color: var(--td-primary);
}

.sidebar-toggle {
    color: var(--td-text) !important;
    padding: 0;
    margin-right: 1rem;
}

/* ===== Cards ===== */

.td-card {
    background: var(--td-card-bg);
    border: 1px solid var(--td-border);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.td-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--td-border);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.td-card .card-footer {
    background: transparent;
    border-top: 1px solid var(--td-border);
    padding: 0.75rem 1.25rem;
}

/* ===== Stat Cards ===== */

.stat-card {
    background: var(--td-card-bg);
    border: 1px solid var(--td-border);
    border-radius: 0.75rem;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: var(--td-text);
}

.stat-info p {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--td-text-muted);
}

.bg-td-primary-light {
    background: var(--td-primary-light);
}

.bg-success-light { background: #dcfce7; }
.bg-warning-light { background: #fef3c7; }
.bg-info-light    { background: #dbeafe; }

.text-td-primary { color: var(--td-primary) !important; }

/* ===== Tables ===== */

.td-table {
    font-size: 0.875rem;
}

.td-table thead th {
    background: var(--td-body-bg);
    border-bottom: 1px solid var(--td-border);
    color: var(--td-text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    white-space: nowrap;
}

.td-table tbody td {
    padding: 0.75rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--td-border);
}

.td-table tbody tr:hover {
    background: rgba(13, 148, 136, 0.03);
}

/* ===== Buttons ===== */

.btn-td-primary {
    background-color: var(--td-primary);
    border-color: var(--td-primary);
    color: #fff;
}

.btn-td-primary:hover {
    background-color: var(--td-primary-dark);
    border-color: var(--td-primary-dark);
    color: #fff;
}

.bg-td-accent {
    background-color: var(--td-accent) !important;
    color: #fff !important;
}

/* ===== Login Page ===== */

.login-page {
    background: linear-gradient(135deg, #0f766e 0%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 1rem;
}

.login-card {
    background: var(--td-card-bg);
    border-radius: 1rem;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: var(--td-primary-light);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-logo i {
    font-size: 2rem;
    color: var(--td-primary);
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--td-text);
    margin: 0;
}

.login-header p {
    font-size: 0.875rem;
}

/* ===== Pagination ===== */

.page-item.active .page-link {
    background-color: var(--td-primary);
    border-color: var(--td-primary);
}

.page-link {
    color: var(--td-primary);
}

.page-link:hover {
    color: var(--td-primary-dark);
}

/* ===== Form ===== */

.form-control:focus,
.form-select:focus {
    border-color: var(--td-primary);
    box-shadow: 0 0 0 0.2rem rgba(13, 148, 136, 0.15);
}

/* ===== Badges ===== */

.badge {
    font-weight: 500;
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
}

/* ===== Responsive ===== */

@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1035;
        display: none;
    }

    .sidebar-overlay.show {
        display: block;
    }
}

/* ===== Utilities ===== */

.content-wrapper {
    max-width: 1400px;
}