/* Humphrey Technical & Vocational College - Styles */

:root {
    --primary: #0d47a1;
    --primary-dark: #002171;
    --primary-light: #5472d3;
    --accent: #ff6f00;
    --success: #2e7d32;
    --danger: #c62828;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-700: #495057;
    --gray-900: #212529;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #0d47a1 0%, #1565c0 50%, #1976d2 100%);
    min-height: 100vh;
    color: var(--gray-900);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-logo {
    text-align: center;
    margin-bottom: 24px;
}

.login-logo img {
    max-height: 80px;
}

.login-logo h1 {
    font-size: 1.25rem;
    color: var(--primary);
    margin-top: 12px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.2);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    width: 100%;
    padding: 14px;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-danger {
    background: #ffebee;
    color: var(--danger);
    border: 1px solid #ef9a9a;
}

.alert-success {
    background: #e8f5e9;
    color: var(--success);
    border: 1px solid #a5d6a7;
}

/* Dashboard Layout */
.dashboard-wrap {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--primary-dark);
    color: white;
    padding: 20px 0;
}

.sidebar-brand {
    padding: 0 24px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 20px;
}

.sidebar-brand h2 {
    font-size: 1.1rem;
}

.sidebar-nav a {
    display: block;
    padding: 12px 24px;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: background 0.2s;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.1);
}

.sidebar-nav a.active {
    background: var(--primary);
    border-left: 4px solid var(--accent);
}

.main-content {
    flex: 1;
    background: var(--gray-100);
    padding: 30px;
    overflow-y: auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 1.75rem;
    color: var(--gray-900);
}

.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    padding: 24px;
    margin-bottom: 24px;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-200);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th, .table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
}

.table tr:hover {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #b71c1c;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #1b5e20;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.stat-card {
    background: white;
    border-radius: 10px;
    padding: 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-card p {
    color: var(--gray-700);
    font-size: 0.9rem;
}

.user-info {
    padding: 12px 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: auto;
    font-size: 0.9rem;
}

.sidebar-nav {
    flex: 1;
}

.user-info span {
    color: rgba(255,255,255,0.7);
}

.select2-like {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.badge-admin { background: #e3f2fd; color: var(--primary); }
.badge-lecturer { background: #fff3e0; color: #e65100; }
.badge-student { background: #e8f5e9; color: var(--success); }

/* Sidebar toggle & overlay - hidden on desktop */
.sidebar-toggle,
.sidebar-overlay {
    display: none;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1001;
    padding: 10px 14px;
    background: var(--primary-dark);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.sidebar-toggle:hover {
    background: var(--primary);
}

/* Table wrapper for horizontal scroll on mobile */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -24px;
    padding: 0 24px;
}

/* ========== RESPONSIVE ========== */

@media (max-width: 992px) {
    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        bottom: 0;
        z-index: 1000;
        transition: left 0.3s ease;
        flex-shrink: 0;
        box-shadow: 4px 0 20px rgba(0,0,0,0.2);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 56px 16px 20px;
        width: 100%;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: 999;
    }

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

@media (max-width: 768px) {
    .login-container {
        padding: 16px;
    }

    .login-card {
        padding: 24px;
    }

    .login-logo h1 {
        font-size: 1.1rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 20px;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .grid-2 {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card {
        padding: 16px;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .table-wrapper {
        margin: 0 -16px;
        padding: 0 16px;
    }

    .table {
        min-width: 500px;
    }

    .table th, .table td {
        padding: 10px 12px;
        font-size: 0.9rem;
    }

    .btn, .sidebar-nav a {
        min-height: 44px;
        padding: 12px 16px;
    }

    .btn-sm {
        padding: 8px 12px;
        min-height: 36px;
    }

    .form-group {
        margin-bottom: 16px;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 12px;
    }

    .login-card {
        padding: 20px;
    }

    .main-content {
        padding: 16px 12px;
    }

    .card {
        padding: 12px;
    }

    .table {
        min-width: 400px;
    }

    .sidebar-toggle {
        top: 12px;
        right: 12px;
        padding: 8px 12px;
    }
}