styles.css

:root {
    --primary-color: #2563eb;
    --success-color: #16a34a;
    --background: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Base Styles */
body {
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--background);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    margin: 0;
    font-size: 2rem;
    color: var(--text-primary);
}

.header p {
    margin: 0.5rem 0 0;
    color: var(--text-secondary);
}

/* Step Indicator */
.step-indicator {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    position: relative;
}

.step-indicator::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    z-index: 0;
}

.step {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.step span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

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

.step.active span {
    color: var(--primary-color);
    font-weight: 500;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1.5rem;
}

/* Input Groups */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
}

.input-help {
    margin: 0.5rem 0 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Radio Groups */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.radio-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.radio-option:hover {
    background: var(--background);
}

.radio-option input[type="radio"] {
    margin-top: 0.25rem;
}

.radio-label {
    font-weight: 500;
    display: block;
}

.radio-help {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: block;
}

/* Comparison Elements */
.comparison-elements {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
}

.element-card {
    flex: 1;
    padding: 1.5rem;
    background: var(--background);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
}

/* Slider */
.slider-container {
    margin: 2rem 0;
}

.slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Progress Bar */
.progress-container {
    margin: 2rem 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Buttons */
.button-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-success {
    background: var(--success-color);
    color: white;
}

/* Results Table */
.result-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.result-table th,
.result-table td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.result-table th {
    background: var(--background);
    font-weight: 500;
}

/* Evaluation Matrix */
.evaluation-matrix {
    margin: 2rem 0;
}

.evaluation-table {
    width: 100%;
    border-collapse: collapse;
}

.evaluation-table th,
.evaluation-table td {
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.evaluation-table input[type="number"] {
    width: 80px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
}

/* Final Rankings */
.ranking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    margin: 0.5rem 0;
    background: var(--background);
    border-radius: var(--radius-md);
}

.ranking-score {
    font-weight: 600;
    color: var(--primary-color);
}

.score-bar-container {
    margin-top: 0.5rem;
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.score-bar {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
}