:root {
    --bg-color: #0d1117;
    --surface-color: #161b22;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-color: #58a6ff;
    --success-color: #3fb950;
    --warning-color: #d29922;
    --error-color: #f85149;
    --open-color: #3fb950;
    --closed-color: #f85149;
    --merged-color: #a371f7;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.search-box {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

#search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

#search-input:focus {
    border-color: var(--accent-color);
}

#search-input::placeholder {
    color: var(--text-secondary);
}

#search-button {
    padding: 0.75rem 1rem;
    background-color: var(--accent-color);
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s;
}

#search-button:hover {
    opacity: 0.9;
}

#search-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--text-secondary);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.hidden {
    display: none !important;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state .hint {
    font-size: 0.875rem;
    margin-top: 0.5rem;
    opacity: 0.8;
}

.results {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.result-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    transition: border-color 0.2s;
}

.result-card:hover {
    border-color: var(--accent-color);
}

.result-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.result-type {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 4px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.result-type.issue {
    background-color: rgba(63, 185, 80, 0.15);
    color: var(--open-color);
}

.result-type.pr {
    background-color: rgba(163, 113, 247, 0.15);
    color: var(--merged-color);
}

.result-title {
    flex: 1;
}

.result-title a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.result-title a:hover {
    text-decoration: underline;
}

.result-number {
    color: var(--text-secondary);
    font-weight: normal;
}

.result-repo {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.result-snippet {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.result-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.state-badge {
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
    font-weight: 500;
}

.state-badge.open {
    background-color: rgba(63, 185, 80, 0.15);
    color: var(--open-color);
}

.state-badge.closed {
    background-color: rgba(248, 81, 73, 0.15);
    color: var(--closed-color);
}

.state-badge.merged {
    background-color: rgba(163, 113, 247, 0.15);
    color: var(--merged-color);
}

.score-badge {
    background-color: rgba(88, 166, 255, 0.15);
    color: var(--accent-color);
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
}

.results-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.error-message {
    text-align: center;
    padding: 2rem;
    color: var(--error-color);
    background-color: rgba(248, 81, 73, 0.1);
    border-radius: 6px;
}

footer {
    margin-top: 3rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Filter Toggle Button */
.filter-toggle {
    padding: 0.75rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s, color 0.2s;
}

.filter-toggle:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.filter-toggle.active {
    background-color: rgba(88, 166, 255, 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Content Layout */
.content-wrapper {
    display: flex;
    gap: 1.5rem;
}

.results-wrapper {
    flex: 1;
    min-width: 0;
}

/* Filter Sidebar */
.filter-sidebar {
    width: 260px;
    flex-shrink: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    display: none;
    flex-direction: column;
    gap: 1rem;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    position: sticky;
    top: 1rem;
}

.filter-sidebar.visible {
    display: flex;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.clear-filters {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 0.75rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.clear-filters:hover {
    background-color: rgba(88, 166, 255, 0.1);
}

/* Filter Sections */
.filter-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.filter-option:hover {
    background-color: rgba(88, 166, 255, 0.05);
}

.filter-option input[type="radio"],
.filter-option input[type="checkbox"] {
    accent-color: var(--accent-color);
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.filter-label {
    flex: 1;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.filter-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background-color: rgba(139, 148, 158, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: 10px;
    min-width: 1.5rem;
    text-align: center;
}

/* Repo Filters */
.repo-filters {
    max-height: 200px;
    overflow-y: auto;
}

.loading-repos {
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.5rem;
}

/* Date Filters */
.date-filters {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.date-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.date-input-group input[type="date"] {
    padding: 0.5rem;
    font-size: 0.875rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.date-input-group input[type="date"]:focus {
    border-color: var(--accent-color);
}

.date-input-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

/* Active Filter Indicator */
.filter-active-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.filter-toggle {
    position: relative;
}

/* Summary Section */
.summary-section {
    margin-bottom: 1rem;
}

.summary-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.summarize-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.summarize-btn:hover {
    border-color: var(--accent-color);
    background-color: rgba(88, 166, 255, 0.05);
}

.summarize-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.summarize-btn.loading {
    color: var(--accent-color);
}

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

.summary-status.error {
    color: var(--error-color);
}

.summary-panel {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
}

.summary-content {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.summary-content p {
    margin-bottom: 1rem;
}

.summary-content p:last-child {
    margin-bottom: 0;
}

.summary-sources {
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.summary-sources-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.summary-sources-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.summary-source-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background-color: rgba(88, 166, 255, 0.1);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--accent-color);
    text-decoration: none;
    transition: background-color 0.2s;
}

.summary-source-link:hover {
    background-color: rgba(88, 166, 255, 0.2);
}

.summary-meta {
    margin-top: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .content-wrapper {
        flex-direction: column;
    }

    .filter-sidebar {
        width: 100%;
        position: static;
        max-height: none;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .result-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
}