/* Nigerian School Management System - Modern Dashboard UI */

/* Bootstrap 5 CDN is included in HTML head */

/* Custom Variables */
:root {
    --primary-color: #28a745;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --sidebar-bg: #343a40;
    --sidebar-hover: #495057;
    --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --card-shadow-hover: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* Global Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
}

.text-primary { color: var(--primary-color) !important; }
.bg-primary { background-color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.bg-success { background-color: var(--success-color) !important; }

/* Landing Page Styles */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--success-color) 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.features-section {
    padding: 80px 0;
    background-color: white;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border: none;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--info-color) 100%);
}

.login-card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
}

.login-header {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem;
    margin: -1rem -1rem 2rem -1rem;
}

.login-header h2 {
    margin: 0;
    font-weight: 600;
}

/* Dashboard Layout */
.dashboard-wrapper {
    min-height: 100vh;
    background-color: #f4f6f9;
}

.sidebar {
    background: var(--sidebar-bg);
    color: white;
    min-height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    z-index: 1000;
    transition: all 0.3s;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--sidebar-hover);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-nav {
    padding: 1rem 0;
}

.sidebar-nav .nav-item {
    margin: 0.25rem 0;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all 0.3s;
    border-radius: 0;
}

.sidebar-nav .nav-link:hover,
.sidebar-nav .nav-link.active {
    background-color: var(--sidebar-hover);
    color: white;
}

.sidebar-nav .nav-link i {
    margin-right: 0.75rem;
    width: 20px;
    text-align: center;
}

.main-content {
    margin-left: 250px;
    padding: 2rem;
    min-height: 100vh;
}

.page-header {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
}

.page-header h1 {
    margin: 0;
    font-weight: 600;
    color: var(--dark-color);
}

.page-header .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0.5rem 0 0 0;
}

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--card-shadow-hover);
}

.card-header {
    background: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.card-body {
    padding: 1.5rem;
}

.stats-card {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    height: 100%;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.stats-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.stats-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.stats-label {
    color: var(--secondary-color);
    font-weight: 500;
}

/* Tables */
.table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.table thead th {
    background: var(--light-color);
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    color: var(--dark-color);
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
}

/* Forms */
.form-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-control {
    border-radius: 8px;
    border: 1px solid #ced4da;
    padding: 0.75rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: #218838;
    border-color: #1e7e34;
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #157347;
    border-color: #146c43;
    transform: translateY(-2px);
}

/* Alerts */
.alert {
    border-radius: 10px;
    border: none;
    padding: 1rem 1.5rem;
}

/* Modals */
.modal-content {
    border-radius: 15px;
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.125);
    padding: 1.5rem;
}

/* CBT Exam Styles */
.exam-container {
    max-width: 800px;
    margin: 0 auto;
}

.question-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.question-card h3 {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.timer {
    background: var(--warning-color);
    color: white;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

/* Report Card Styles */
.report-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    max-width: 800px;
    margin: 0 auto;
}

.school-header {
    text-align: center;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.school-header h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.student-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-item {
    background: var(--light-color);
    padding: 1rem;
    border-radius: 8px;
}

.results-table {
    margin: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        min-height: auto;
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .hero-section h1 {
        font-size: 2.5rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .login-card {
        margin: 1rem;
    }

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

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 50px 0;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .card-body {
        padding: 1rem;
    }

    .form-card {
        padding: 1rem;
    }
}

/* Print Styles for Report Cards */
@media print {
    body * {
        visibility: hidden;
    }

    .report-card,
    .report-card * {
        visibility: visible;
    }

    .report-card {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        box-shadow: none;
    }

    .btn {
        display: none;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-color);
}