/* Custom Styles for Webinar System */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    margin-bottom: 40px;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-section p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Card Styles */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.card-header {
    background: transparent;
    border-bottom: 2px solid #f0f0f0;
    padding: 20px;
}

.card-header h4, .card-header h5 {
    margin-bottom: 0;
    color: var(--primary-color);
}

/* Form Styles */
.form-control, .form-select {
    border-radius: 10px;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 600;
    color: #495057;
}

/* Button Styles */
.btn {
    border-radius: 10px;
    padding: 12px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    border: none;
}

.btn-danger {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    border: none;
}

/* Alert Styles */
.alert {
    border-radius: 10px;
    padding: 15px 20px;
}

/* Progress Bar */
.progress {
    height: 25px;
    border-radius: 15px;
    background-color: #e9ecef;
}

.progress-bar {
    border-radius: 15px;
    font-weight: 600;
    line-height: 25px;
}

/* Question Card */
.question-card {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
}

.question-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    margin-right: 10px;
}

/* Option Styles */
.option-label {
    display: block;
    padding: 15px 20px;
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.option-label:hover {
    border-color: var(--primary-color);
    background: #f8f9ff;
}

.option-input:checked + .option-label {
    border-color: var(--primary-color);
    background: #e7f1ff;
}

.option-input {
    display: none;
}

/* Stats Card */
.stats-card {
    text-align: center;
    padding: 30px 20px;
}

.stats-card .icon {
    font-size: 3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.stats-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
}

.stats-card .label {
    color: #6c757d;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 400px;
    margin: 30px 0;
}

/* Table Styles */
.table {
    border-radius: 15px;
    overflow: hidden;
}

.table thead th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    border: none;
    padding: 15px;
}

.table tbody td {
    padding: 15px;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: #f8f9fa;
}

/* Badge Styles */
.badge {
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
}

/* Admin Sidebar */
.admin-sidebar {
    min-height: 100vh;
    background: #2c3e50;
    color: white;
    padding: 20px 0;
}

.admin-sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 15px 25px;
    transition: all 0.3s ease;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
    color: white;
    background: rgba(255,255,255,0.1);
    border-left: 4px solid var(--primary-color);
}

.admin-sidebar .nav-link i {
    margin-right: 10px;
    width: 20px;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    width: 100%;
    max-width: 450px;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* Step Indicator */
.step-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
}

.step::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    width: 100%;
    height: 4px;
    background: #e9ecef;
    z-index: -1;
}

.step:last-child::after {
    display: none;
}

.step-circle {
    width: 45px;
    height: 45px;
    background: #e9ecef;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #6c757d;
    margin-bottom: 10px;
}

.step.active .step-circle {
    background: var(--primary-color);
    color: white;
}

.step.completed .step-circle {
    background: var(--success-color);
    color: white;
}

.step-title {
    font-size: 0.85rem;
    color: #6c757d;
}

.step.active .step-title {
    color: var(--primary-color);
    font-weight: 600;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 50px 0;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .step-indicator {
        flex-direction: column;
        gap: 20px;
    }
    
    .step::after {
        display: none;
    }
    
    .admin-sidebar {
        min-height: auto;
    }
}