:root {
    --dn4-primary: #ffc107;
    --dn4-secondary: #e0a800;
    --dn4-accent: #fd7e14;
    --dn4-light: #fff3cd;
    --dn4-border: #ffeaa7;
}

.dn4-container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    border: 3px solid var(--dn4-primary);
    box-shadow: 0 8px 32px rgba(255, 193, 7, 0.15);
    overflow: hidden;
}

.dn4-header {
    background: linear-gradient(135deg, var(--dn4-primary), var(--dn4-secondary));
    color: white;
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
}

.dn4-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
}

.dn4-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.dn4-header p {
    font-size: 1.3rem;
    opacity: 0.95;
    margin: 0;
    position: relative;
    z-index: 1;
}

.mode-selector {
    display: flex;
    background: #f8f9fa;
    border-bottom: 3px solid var(--dn4-border);
}

.mode-btn {
    flex: 1;
    padding: 1.5rem;
    text-align: center;
    background: none;
    border: none;
    color: #6c757d;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
}

.mode-btn:hover {
    background: var(--dn4-light);
    color: var(--dn4-secondary);
}

.mode-btn.active {
    background: var(--dn4-primary);
    color: white;
    transform: translateY(-2px);
}

.mode-btn.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--dn4-secondary);
}

.content-section {
    display: none;
    padding: 3rem 2rem;
    min-height: 600px;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

.patient-info {
    background: linear-gradient(135deg, var(--dn4-light), #fff);
    border: 2px solid var(--dn4-border);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.patient-info h3 {
    color: var(--dn4-secondary);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.patient-info .row {
    margin-bottom: 1rem;
}

.patient-info input {
    border: 2px solid var(--dn4-border);
    border-radius: 10px;
    padding: 0.75rem;
    font-size: 1rem;
}

.patient-info input:focus {
    border-color: var(--dn4-primary);
    box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.25);
}

.progress-section {
    background: var(--dn4-light);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 2px solid var(--dn4-border);
}

.progress-bar {
    height: 12px;
    background: linear-gradient(90deg, var(--dn4-primary), var(--dn4-secondary));
    border-radius: 6px;
    transition: width 0.3s ease;
}

.question-section {
    background: white;
    border: 3px solid var(--dn4-border);
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(255, 193, 7, 0.1);
}

.question-section h4 {
    color: var(--dn4-secondary);
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
}

.question-item {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.question-item:hover {
    border-color: var(--dn4-border);
    background: var(--dn4-light);
}

.question-item.answered {
    border-color: var(--dn4-primary);
    background: var(--dn4-light);
}

.question-text {
    font-weight: 600;
    color: #495057;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.answer-options {
    display: flex;
    gap: 1rem;
}

.answer-option {
    flex: 1;
    padding: 1rem;
    border: 2px solid #dee2e6;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    font-weight: 600;
}

.answer-option:hover {
    border-color: var(--dn4-primary);
    background: var(--dn4-light);
}

.answer-option.selected {
    border-color: var(--dn4-secondary);
    background: var(--dn4-primary);
    color: white;
}

.answer-option.selected.si {
    background: linear-gradient(135deg, #28a745, #20c997);
    border-color: #28a745;
}

.answer-option.selected.no {
    background: linear-gradient(135deg, #dc3545, #c82333);
    border-color: #dc3545;
}

.results-section {
    background: linear-gradient(135deg, var(--dn4-primary), var(--dn4-secondary));
    color: white;
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    margin: 2rem 0;
    display: none;
}

.results-section.show {
    display: block;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.score-display {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.score-interpretation {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.score-description {
    font-size: 1.1rem;
    opacity: 0.9;
    line-height: 1.6;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn-dn4 {
    padding: 1rem 2rem;
    border-radius: 15px;
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary-dn4 {
    background: linear-gradient(135deg, var(--dn4-primary), var(--dn4-secondary));
    color: white;
}

.btn-primary-dn4:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
}

.btn-outline-dn4 {
    background: white;
    color: var(--dn4-secondary);
    border: 2px solid var(--dn4-primary);
}

.btn-outline-dn4:hover {
    background: var(--dn4-primary);
    color: white;
}

.btn-danger-dn4 {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
}

.btn-danger-dn4:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 53, 69, 0.4);
}

.template-section {
    background: white;
    border: 3px solid var(--dn4-border);
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
}

.template-header {
    text-align: center;
    border-bottom: 3px solid var(--dn4-border);
    padding-bottom: 2rem;
    margin-bottom: 3rem;
}

.template-header h2 {
    color: var(--dn4-secondary);
    font-weight: 700;
    margin-bottom: 1rem;
}

.template-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.template-table th,
.template-table td {
    border: 2px solid var(--dn4-border);
    padding: 1rem;
    text-align: left;
}

.template-table th {
    background: var(--dn4-light);
    font-weight: 700;
    color: var(--dn4-secondary);
}

.template-table tr:nth-child(even) {
    background: #f8f9fa;
}

.score-interpretation-box {
    background: var(--dn4-light);
    border: 2px solid var(--dn4-border);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.score-interpretation-box h4 {
    color: var(--dn4-secondary);
    margin-bottom: 1rem;
}

.score-interpretation-box ul {
    margin: 0;
    padding-left: 1.5rem;
}

.score-interpretation-box li {
    margin-bottom: 0.5rem;
    color: #495057;
}

@media (max-width: 768px) {
    .dn4-header {
        padding: 2rem 1rem;
    }

    .dn4-header h1 {
        font-size: 2rem;
    }

    .dn4-header p {
        font-size: 1.1rem;
    }

    .content-section {
        padding: 2rem 1rem;
    }

    .answer-options {
        flex-direction: column;
    }

    .action-buttons {
        flex-direction: column;
    }

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

@media print {
    .mode-selector,
    .action-buttons {
        display: none !important;
    }

    .dn4-container {
        border: none;
        box-shadow: none;
    }

    .content-section {
        display: block !important;
    }

    .template-section i {
        display: none;
    }
}