/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

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

/* Page Header */
.page-header {
    text-align: center;
    padding: 3rem 2rem 2rem;
    max-width: 800px;
    margin: 0 auto;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.page-header .subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.page-header .framework-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.page-header .framework-note a {
    color: var(--primary-color);
    text-decoration: none;
}

.page-header .framework-note a:hover {
    text-decoration: underline;
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background-color: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    margin-top: 2rem;
}

.btn-add {
    background-color: white;
    color: var(--primary-color);
    border: 2px dashed var(--primary-color);
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
}

.btn-add:hover {
    background-color: #eff6ff;
}

.btn-remove {
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 0.25rem;
    padding: 0.25rem 0.75rem;
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
}

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

.btn-export {
    background-color: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
}

.btn-export:hover {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Input Section */
.input-section {
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.input-section h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.section-divider {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 3rem 0;
}

.event-group {
    margin-bottom: 2rem;
}

.event-group h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.event-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.event-item {
    display: grid;
    grid-template-columns: 200px 1fr auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem;
    background-color: var(--bg-color);
    border-radius: 0.5rem;
}

.event-date {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.95rem;
}

.event-name,
.event-description {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.95rem;
}

.event-audittype {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.95rem;
    background-color: white;
}

/* Capacity Groups */
.capacity-group {
    margin-bottom: 2rem;
}

.capacity-group h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.radio-group label {
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.radio-group label:hover {
    border-color: var(--primary-color);
    background-color: #eff6ff;
}

.radio-group input[type="radio"] {
    margin-right: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.radio-group input[type="radio"]:checked + span {
    font-weight: 600;
    color: var(--primary-color);
}

.radio-group label:has(input:checked) {
    border-color: var(--primary-color);
    background-color: #eff6ff;
}

/* Timeline Section */
.timeline-section {
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.timeline-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.timeline-viz {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

/* Recommendations */
.recommendations {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.recommendation-card {
    background-color: var(--bg-color);
    border-left: 4px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
}

.recommendation-card.high-value {
    border-left-color: var(--success-color);
}

.recommendation-card.medium-value {
    border-left-color: var(--warning-color);
}

.recommendation-card.low-value {
    border-left-color: var(--danger-color);
}

.recommendation-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.recommendation-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.recommendation-badge.high {
    background-color: #d1fae5;
    color: #065f46;
}

.recommendation-badge.medium {
    background-color: #fef3c7;
    color: #92400e;
}

.recommendation-badge.low {
    background-color: #fee2e2;
    color: #991b1b;
}

.recommendation-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 1rem 0 0.4rem;
    color: var(--text-primary);
}

.recommendation-card p {
    margin-bottom: 0.5rem;
    line-height: 1.5;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.recommendation-card ul {
    list-style: none;
    margin: 0.4rem 0;
}

.recommendation-card ul li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
    line-height: 1.4;
    font-size: 0.875rem;
}

.recommendation-card ul li strong {
    color: var(--text-primary);
}

.covered-events {
    margin: 0.75rem 0;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.covered-events strong {
    color: var(--text-primary);
    font-weight: 600;
}

.timeline-summary {
    margin: 0.5rem 0 0.75rem;
    padding: 0.5rem 0.75rem;
    background-color: #f8fafc;
    border-radius: 0.375rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.key-benefits {
    margin: 0.75rem 0;
}

.benefit-item {
    padding: 0.35rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.vendor-engagement-alert {
    margin: 0.75rem 0;
    padding: 0.625rem 0.875rem;
    background-color: #f1f5f9;
    border-left: 3px solid #64748b;
    border-radius: 0.375rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
}

.vendor-engagement-alert strong {
    color: #1e293b;
}

.board-message {
    background-color: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 0.375rem;
    padding: 0.75rem;
    margin-top: 0.75rem;
    font-style: italic;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.strategic-value-insight {
    display: flex;
    gap: 0.875rem;
    background-color: #dbeafe;
    border: 1px solid #93c5fd;
    border-radius: 0.5rem;
    padding: 1rem 1.125rem;
    margin-bottom: 1.5rem;
    grid-column: 1 / -1;
}

.strategic-value-insight .insight-icon {
    font-size: 1.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.strategic-value-insight .insight-content {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.strategic-value-insight .insight-content strong {
    color: #1e40af;
    font-weight: 600;
}

.strategic-value-insight .insight-suggestions {
    margin-top: 0.5rem;
    color: var(--text-secondary);
}

.strategic-value-insight .insight-suggestions div {
    margin-top: 0.25rem;
}

.conflict-warning {
    background-color: #fffbeb;
    border-left: 3px solid var(--warning-color);
    border-radius: 0.375rem;
    padding: 0.875rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.conflict-warning h3 {
    color: var(--warning-color);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.conflict-warning h3::before {
    content: "⚠️";
    font-size: 1rem;
}

.conflict-warning p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Export Section */
.export-section {
    background-color: var(--bg-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.export-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.export-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.share-link-display {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.share-link-display input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.95rem;
    font-family: monospace;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .recommendations {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 1.875rem;
    }

    .page-header .subtitle {
        font-size: 1rem;
    }

    .event-item {
        grid-template-columns: 1fr;
    }

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

    .share-link-display {
        flex-direction: column;
    }

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

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-privacy {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-weight: 500;
}

.footer-copyright {
    color: var(--text-secondary);
}

.footer-copyright a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.footer-copyright a:hover {
    text-decoration: underline;
}

@media (max-width: 480px) {
    .container {
        padding: 1rem 0.5rem;
    }

    .input-section,
    .timeline-section {
        padding: 1rem;
    }

    .page-header {
        padding: 2rem 1rem 1.5rem;
    }

    .page-header h1 {
        font-size: 1.625rem;
    }
}