:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border: none;
    border-radius: 15px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1) !important;
}

.form-control {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn {
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, #007bff, #0056b3);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

.category-label,
.tone-label {
    padding: 10px 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    display: block;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
}

.category-label:hover,
.tone-label:hover {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05);
    transform: translateY(-1px);
}

.form-check-input:checked + .category-label,
.form-check-input:checked + .tone-label {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.1);
    font-weight: 600;
}

.response-label {
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    display: block;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    text-align: center;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.response-label:hover {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05);
    transform: translateY(-1px);
}

.form-check-input:checked + .response-label {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.1);
    font-weight: 600;
}

.response-name {
    font-size: 0.9rem;
    margin-top: 4px;
}

.suggestion-number {
    position: absolute;
    top: 10px;
    right: 15px;
}

.suggestion-number .badge {
    font-size: 0.8rem;
}

.suggestion-actions {
    display: flex;
    gap: 5px;
}

.suggestion-actions .btn {
    width: 35px;
    height: 35px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.suggestion-actions .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.suggestion-item {
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    padding-top: 40px !important;
}

.suggestion-item:hover {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05) !important;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.suggestion-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--dark-color);
}

.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    border-bottom: none;
}

#charCount {
    font-weight: 600;
    transition: color 0.3s ease;
}

.char-warning {
    color: var(--warning-color) !important;
}

.char-danger {
    color: var(--danger-color) !important;
}

.loading-spinner {
    display: none;
}

.loading .loading-spinner {
    display: inline-block;
}

.loading .btn-text {
    display: none;
}

footer {
    margin-top: auto;
}

.btn-outline-success:hover {
    background-color: #28a745;
    border-color: #28a745;
}

.btn-danger {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.tts-controls {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
}

.tts-info {
    font-size: 0.9rem;
    color: #6c757d;
    margin-top: 10px;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .card-body {
        padding: 20px 15px;
    }
    
    .suggestion-text {
        font-size: 1rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .response-label {
        min-height: 70px;
        padding: 10px;
    }
    
    .response-name {
        font-size: 0.8rem;
    }
    
    .suggestion-actions {
        flex-direction: column;
        gap: 2px;
    }
    
    .suggestion-actions .btn {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
}

/* Tooltip styling */
.tooltip {
    font-size: 0.875rem;
}

/* Animation for new suggestions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.suggestion-item {
    animation: fadeInUp 0.5s ease;
}

.suggestion-item:nth-child(2) {
    animation-delay: 0.1s;
}

.suggestion-item:nth-child(3) {
    animation-delay: 0.2s;
}

.suggestion-item:nth-child(4) {
    animation-delay: 0.3s;
}