/* Custom CSS for Survey & Feedback Tool */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f8f9fa;
}

/* Custom card styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* Dashboard stats cards */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.stats-card.success {
    background: linear-gradient(135deg, var(--success-color), #1e7e34);
}

.stats-card.warning {
    background: linear-gradient(135deg, var(--warning-color), #d39e00);
}

.stats-card.info {
    background: linear-gradient(135deg, var(--info-color), #117a8b);
}

.stats-card .icon {
    font-size: 2.5rem;
    opacity: 0.8;
}

.stats-card .number {
    font-size: 2rem;
    font-weight: bold;
    margin: 0.5rem 0;
}

/* Survey form styles */
.survey-form {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--box-shadow);
}

.question-block {
    background: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.question-title {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.rating-stars {
    display: flex;
    gap: 0.25rem;
    margin: 0.5rem 0;
}

.rating-stars .star {
    font-size: 1.5rem;
    color: #ddd;
    cursor: pointer;
    transition: var(--transition);
}

.rating-stars .star:hover,
.rating-stars .star.active {
    color: #ffc107;
}

/* Button styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.15);
}

/* Table styles */
.table {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

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

/* Modal styles */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

.modal-header {
    background: var(--primary-color);
    color: white;
    border-bottom: none;
}

.modal-header .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Chart container */
.chart-container {
    position: relative;
    height: 400px;
    background: white;
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 2rem;
    box-shadow: var(--box-shadow);
}

/* Alert styles */
.alert {
    border: none;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.alert-success {
    border-left-color: var(--success-color);
}

.alert-danger {
    border-left-color: var(--danger-color);
}

.alert-warning {
    border-left-color: var(--warning-color);
}

.alert-info {
    border-left-color: var(--info-color);
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 768px) {
    .stats-card {
        text-align: center;
        margin-bottom: 1rem;
    }
    
    .survey-form {
        padding: 1rem;
    }
    
    .question-block {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
}

/* Survey link styling */
.survey-link {
    background: #e9ecef;
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    padding: 0.75rem;
    font-family: monospace;
    word-break: break-all;
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Form validation */
.is-invalid {
    border-color: var(--danger-color) !important;
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Progress bar */
.survey-progress {
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.survey-progress .progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--info-color));
    transition: width 0.3s ease;
}