/* Reset y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.logo-icon {
    font-size: 3em;
    margin-right: 15px;
}

.logo-text {
    font-size: 2.5em;
    font-weight: bold;
    color: #667eea;
}

.header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 2.2em;
}

.subtitle {
    color: #7f8c8d;
    font-size: 1.1em;
}

/* Progress Bar */
.progress-container {
    background: white;
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: #ecf0f1;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 5px;
    transition: width 0.3s ease;
    width: 12.5%;
}

.progress-text {
    text-align: center;
    color: #7f8c8d;
    font-weight: 500;
}

/* Form Sections */
.form-section {
    display: none;
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.form-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.section-header {
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 2px solid #ecf0f1;
    padding-bottom: 20px;
}

.section-header h2 {
    color: #2c3e50;
    font-size: 1.8em;
    margin-bottom: 10px;
}

.section-icon {
    font-size: 1.2em;
    margin-right: 10px;
}

/* Form Layout */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group.full-width {
    grid-column: 1 / -1;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fafafa;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Checkbox Groups */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: #f8f9fa;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-item:hover {
    background: #e3f2fd;
    border-color: #667eea;
}

.checkbox-item input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    transform: scale(1.2);
}

.checkbox-item input[type="checkbox"]:checked + span {
    color: #667eea;
    font-weight: 600;
}

.checkbox-item.consent-item {
    background: #fff3cd;
    border-color: #ffeaa7;
    padding: 20px;
    margin-bottom: 15px;
}

.checkbox-item.consent-item span {
    font-size: 14px;
    line-height: 1.5;
}

/* Percentage Grid */
.percentage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.percentage-item {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 2px solid #ecf0f1;
}

.percentage-item label {
    font-size: 14px;
    margin-bottom: 8px;
    color: #7f8c8d;
}

.input-with-percent {
    display: flex;
    align-items: center;
}

.input-with-percent input {
    margin-bottom: 0;
    margin-right: 8px;
}

.input-with-percent span {
    font-weight: bold;
    color: #667eea;
}

.percentage-total {
    text-align: center;
    margin-top: 15px;
    font-size: 18px;
    font-weight: bold;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

/* Conditional Fields */
.conditional-field,
.conditional-section {
    margin-top: 15px;
    padding: 15px;
    background: #f0f8ff;
    border-left: 4px solid #667eea;
    border-radius: 0 8px 8px 0;
}

/* Validation */
.form-group input.valid {
    border-color: #27ae60;
    background: #f0fff4;
}

.form-group input.invalid {
    border-color: #e74c3c;
    background: #fff5f5;
}

.validation-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: flex;
    align-items: center;
}

.validation-message::before {
    content: "⚠️";
    margin-right: 5px;
}

/* Navigation Buttons */
.form-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 20px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Success Message */
.success-message {
    background: white;
    border-radius: 15px;
    padding: 50px 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.success-content h2 {
    color: #27ae60;
    font-size: 2.5em;
    margin-bottom: 20px;
}

.success-content p {
    color: #7f8c8d;
    font-size: 1.2em;
    margin-bottom: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
    
    .percentage-grid {
        grid-template-columns: 1fr;
    }
    
    .form-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .header h1 {
        font-size: 1.8em;
    }
    
    .logo-text {
        font-size: 2em;
    }
    
    .section-header h2 {
        font-size: 1.5em;
    }
}

@media (max-width: 480px) {
    .form-section {
        padding: 20px;
    }
    
    .header {
        padding: 20px;
    }
    
    .progress-container {
        padding: 15px;
    }
    
    .checkbox-item {
        padding: 10px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #7f8c8d;
}

.loading::before {
    content: "⏳";
    margin-right: 10px;
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Accessibility */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.checkbox-item:focus-within {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
    }
    
    .form-navigation,
    .progress-container {
        display: none;
    }
    
    .form-section {
        display: block !important;
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
        margin-bottom: 20px;
    }
}