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

:root {
    --color-primary: #0366d6;
    --color-success: #28a745;
    --color-error: #d73a49;
    --color-warning: #ffc107;
    --color-bg: #f6f8fa;
    --color-surface: #ffffff;
    --color-text: #24292e;
    --color-text-secondary: #586069;
    --color-border: #e1e4e8;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Header */
header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 2rem 0;
    box-shadow: var(--shadow-sm);
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

header h1 {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

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

.header-title-section {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.github-link {
    color: var(--color-text);
    opacity: 0.7;
    transition: var(--transition);
    display: flex;
    align-items: center;
    margin-top: -0.5rem;
}

.github-link:hover {
    opacity: 1;
    color: var(--color-primary);
    transform: scale(1.1);
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem 0;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 4rem 0;
}

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

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error Message */
.error-message {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--radius);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
}

.error-message h2 {
    color: #856404;
    margin-bottom: 1rem;
}

.error-message p {
    color: #856404;
    margin-bottom: 0.5rem;
}

/* Summary Section */
.summary-section {
    margin-bottom: 2rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0;
    flex-wrap: wrap;
}

.tab-button {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0.85rem 2rem;
    border-radius: 999px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tab-button:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tab-button.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.card-content {
    flex: 1;
}

.card-content h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
}

.error-count {
    color: var(--color-error);
}

.warning-count {
    color: var(--color-warning);
}

/* Status Badge */
.status-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

.status-card.status-pass {
    border-left: 4px solid var(--color-success);
}

.status-card.status-fail {
    border-left: 4px solid var(--color-error);
}

/* Metadata Section */
.metadata-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

/* Overview Section */
.overview-section {
    margin-bottom: 2rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.stat-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.stat-panel h3 {
    font-size: 1rem;
    margin-bottom: 0;
    color: var(--color-text);
}

.sort-toggle {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

.sort-btn {
    background: var(--color-surface);
    border: none;
    padding: 0.2rem 0.55rem;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.sort-btn:first-child {
    border-right: 1px solid var(--color-border);
}

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

.sort-btn.active {
    background: var(--color-primary);
    color: #fff;
}

.stat-meta {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
}

.stat-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f9fafb;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
}

.stat-label {
    color: var(--color-text);
    margin-right: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 70%;
}

.stat-count {
    font-weight: 600;
    color: var(--color-primary);
}

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

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.info-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-item span:last-child,
.info-item a {
    color: var(--color-text);
    font-weight: 500;
}

.info-item a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

.info-item a:hover {
    text-decoration: underline;
}

/* Section Headers */
section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

/* Studies with Issues */
#issues-summary-section {
    margin-bottom: 2rem;
}

.table-wrapper {
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.issues-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.issues-table thead {
    background: var(--color-bg);
    border-bottom: 2px solid var(--color-border);
}

.issues-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.issues-table td {
    padding: 0.65rem 1rem;
    border-top: 1px solid var(--color-border);
    vertical-align: middle;
}

.issues-table tbody tr:hover {
    background: #f1f5f9;
}

.issues-table .study-name-cell {
    font-weight: 600;
    white-space: nowrap;
}

.issues-table .num-cell {
    text-align: center;
    white-space: nowrap;
}

.col-tag {
    display: inline-block;
    background: #eef2ff;
    color: #4338ca;
    border: 1px solid #c7d2fe;
    border-radius: 4px;
    padding: 0.1rem 0.45rem;
    font-size: 0.8rem;
    margin: 0.1rem;
    white-space: nowrap;
}

.col-tags-cell {
    max-width: 300px;
    line-height: 1.8;
}

#issues-section {
    margin-bottom: 2rem;
}

#studies-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.study-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-error);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.study-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.study-header h3 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin: 0;
}

.study-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-error {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.study-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.issues-container {
    margin-top: 1rem;
}

.issue-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.error-title {
    color: var(--color-error);
}

.warning-title {
    color: #856404;
}

.issue-list {
    list-style: none;
    padding-left: 0;
}

.issue-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: var(--radius);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.error-item {
    background: #fff5f5;
    border-left: 3px solid var(--color-error);
}

.warning-item {
    background: #fffef5;
    border-left: 3px solid var(--color-warning);
}

/* Success Message */
.success-message {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-success);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.success-message h2 {
    color: var(--color-success);
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--color-text-secondary);
}

/* History Section */
.history-section {
    margin-top: 2rem;
}

.history-container {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.info-text {
    color: var(--color-text-secondary);
    text-align: center;
}

/* Footer */
footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    margin-top: 3rem;
    text-align: center;
}

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

footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .card-value {
        font-size: 1.5rem;
    }
    
    .study-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media print {
    body {
        background: white;
    }
    
    .card,
    .metadata-section,
    .study-card {
        box-shadow: none;
        page-break-inside: avoid;
    }
}