/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --secondary-hover: #475569;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

/* Form Styles */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 8px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
    transition: border-color 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

input::placeholder {
    color: #94a3b8;
}

/* Button Styles */
.btn {
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-primary:disabled {
    background-color: #cbd5e1;
    cursor: not-allowed;
}

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

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

.btn-danger {
    background-color: var(--danger-color);
    color: white;
    padding: 6px 12px;
    font-size: 0.75rem;
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* Role Family Styles */
.role-family {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 16px;
    background: #f8fafc;
}

.role-family-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.role-family-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.role-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.parameters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.parameters-header {
    grid-column: 1 / -1;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.param-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.param-group input {
    font-size: 0.8125rem;
}

/* Actions Section */
.actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin: 32px 0;
    flex-wrap: wrap;
}

.demo-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.demo-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-right: 4px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.75rem;
}

/* Results Section */
.results-card {
    border: 2px solid var(--primary-color);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.result-item {
    text-align: center;
}

.result-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.result-range {
    font-size: 1.5rem;
}

.result-unit {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.results-actions {
    text-align: center;
    margin-top: 24px;
}

/* Risk Badge */
.risk-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 1rem;
    font-weight: 600;
}

.risk-low {
    background-color: #d1fae5;
    color: #065f46;
}

.risk-medium {
    background-color: #fed7aa;
    color: #92400e;
}

.risk-high {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Loading Indicator */
.loading {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    margin: 20px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 16px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .role-grid {
        grid-template-columns: 1fr;
    }

    .parameters-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .actions {
        flex-direction: column;
        gap: 16px;
    }

    .demo-buttons {
        justify-content: center;
    }

    .btn {
        width: 100%;
    }

    .demo-buttons .btn-small {
        width: auto;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-2 {
    margin-top: 16px;
}