/* CSS Variables */
:root {
    --cncf-blue: #446ca9;
    --cncf-blue-dark: #365589;
    --cncf-blue-light: #5a82bf;
    --color-success: #28a745;
    --color-info: #17a2b8;
    --color-secondary: #6c757d;
    --color-warning: #ffc107;
    --color-bg: #f8f9fa;
    --color-bg-white: #ffffff;
    --color-text: #212529;
    --color-text-muted: #6c757d;
    --color-border: #dee2e6;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--cncf-blue) 0%, var(--cncf-blue-dark) 100%);
    color: white;
    padding: 2.5rem 0;
    text-align: center;
}

.header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
}

.header .subtitle {
    margin: 0.5rem 0 0;
    opacity: 0.9;
    font-size: 1.1rem;
}

/* Navigation */
.nav {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0;
}

.nav-links li {
    margin: 0;
}

.nav-links a {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.nav-links a:hover {
    color: var(--cncf-blue);
    background-color: rgba(68, 108, 169, 0.05);
}

.nav-links a.active {
    color: var(--cncf-blue);
    border-bottom-color: var(--cncf-blue);
}

/* Filters */
.filters {
    background: var(--color-bg-white);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.filters-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-group label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.375rem;
}

.filter-group input,
.filter-group select {
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--cncf-blue);
    box-shadow: 0 0 0 3px rgba(68, 108, 169, 0.15);
}

.filters-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn:active {
    transform: translateY(0);
}

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

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

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

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

.link-btn {
    background: none;
    border: none;
    color: inherit;
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
}

.link-btn:hover {
    color: var(--cncf-blue-light);
}

/* Sort Controls */
.sort-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-count {
    font-weight: 600;
    color: var(--color-text-muted);
}

.sort-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-group label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.sort-group select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

/* Blanket Exceptions */
.blanket-exceptions {
    margin: 2rem 0;
}

.blanket-exceptions h2 {
    font-size: 1.5rem;
    margin: 0 0 1rem;
    color: var(--cncf-blue);
}

.blanket-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1rem;
}

.blanket-card {
    background: linear-gradient(135deg, var(--cncf-blue) 0%, var(--cncf-blue-light) 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.blanket-card h3 {
    margin: 0 0 0.75rem;
    font-size: 1.25rem;
}

.blanket-card p {
    margin: 0 0 1rem;
    opacity: 0.95;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.blanket-card .meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8125rem;
    opacity: 0.9;
}

.blanket-card .meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.blanket-card .licenses {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.blanket-card .license-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.8125rem;
}

.blanket-card a {
    color: white;
    text-decoration: underline;
}

.blanket-card a:hover {
    opacity: 0.8;
}

/* Blanket Exceptions Page */
.blanket-exceptions-page {
    margin: 2rem 0;
}

.blanket-exceptions-page .page-header {
    margin-bottom: 2rem;
}

.blanket-exceptions-page .page-header h2 {
    font-size: 1.75rem;
    margin: 0 0 0.5rem;
    color: var(--cncf-blue);
}

.blanket-exceptions-page .page-description {
    color: var(--color-text-muted);
    font-size: 1rem;
    margin: 0;
    max-width: 800px;
}

.blanket-card-large {
    padding: 2rem;
}

.blanket-card-large h3 {
    font-size: 1.5rem;
    margin: 0 0 1rem;
}

.blanket-card-large .description {
    font-size: 1rem;
    line-height: 1.6;
    margin: 0 0 1.5rem;
}

.blanket-card-large .meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.blanket-card-large .meta-item {
    font-size: 0.9375rem;
}

.blanket-card-large .licenses {
    margin-bottom: 1.5rem;
}

.blanket-card-large .licenses strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.9;
}

.blanket-card-large .license-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.blanket-card-large .documentation {
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.blanket-card-large .doc-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.blanket-card-large .doc-link:hover {
    background: rgba(255, 255, 255, 0.25);
    opacity: 1;
}

.error-message {
    text-align: center;
    padding: 2rem;
    color: #dc3545;
    background: #fff;
    border-radius: var(--radius-md);
}

/* Results Table */
.results {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-wrapper {
    overflow-x: auto;
}

#exceptions-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

#exceptions-table thead {
    background: var(--cncf-blue);
    color: white;
    position: sticky;
    top: 0;
    z-index: 10;
}

#exceptions-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

#exceptions-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
}

#exceptions-table th.sortable:hover {
    background-color: var(--cncf-blue-dark);
}

#exceptions-table th.sortable.sorted {
    background-color: var(--cncf-blue-dark);
}

#exceptions-table th .sort-indicator {
    font-size: 0.75rem;
    opacity: 0.9;
}

#exceptions-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

#exceptions-table tbody tr:hover {
    background-color: rgba(68, 108, 169, 0.04);
}

#exceptions-table tbody tr:last-child td {
    border-bottom: none;
}

/* Package Links */
.package-link {
    color: var(--cncf-blue);
    text-decoration: none;
    word-break: break-word;
}

.package-link:hover {
    text-decoration: underline;
}

.package-name {
    word-break: break-word;
}

/* Results Link */
.results-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--cncf-blue);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    background-color: rgba(68, 108, 169, 0.08);
    transition: background-color 0.2s, color 0.2s;
}

.results-link:hover {
    background-color: rgba(68, 108, 169, 0.15);
    text-decoration: none;
}

/* License Badge */
.license-badge {
    display: inline-block;
    background: var(--color-bg);
    color: var(--color-text);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.8125rem;
    max-width: 300px;
    word-break: break-word;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: capitalize;
}

.status-approved {
    background-color: #d4edda;
    color: #155724;
}

.status-allowlisted {
    background-color: #cce5ff;
    color: #004085;
}

.status-apache-2-0 {
    background-color: #e2e3e5;
    color: #383d41;
}

.status-denied {
    background-color: #f8d7da;
    color: #721c24;
}

/* No Results */
.no-results {
    padding: 3rem;
    text-align: center;
    color: var(--color-text-muted);
}

.no-results p {
    margin: 0;
    font-size: 1.125rem;
}

/* Footer */
.footer {
    background: var(--color-text);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.footer-links a,
.footer-links button {
    color: white;
    text-decoration: none;
    font-size: 0.9375rem;
    transition: opacity 0.2s;
}

.footer-links a:hover,
.footer-links button:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.footer-meta {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.75rem;
    }

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

    .filters-row {
        grid-template-columns: 1fr;
    }

    .sort-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .blanket-cards {
        grid-template-columns: 1fr;
    }

    #exceptions-table {
        font-size: 0.875rem;
    }

    #exceptions-table th,
    #exceptions-table td {
        padding: 0.75rem 0.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Loading State */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--color-text-muted);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--color-border);
    border-top-color: var(--cncf-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
    vertical-align: middle;
}

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

/* Scrollbar styling for table */
.table-wrapper::-webkit-scrollbar {
    height: 8px;
}

.table-wrapper::-webkit-scrollbar-track {
    background: var(--color-bg);
}

.table-wrapper::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.table-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}