:root {
    /* Dark Theme (Default) */
    --bg-primary: #0f1115;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-glass: rgba(22, 27, 34, 0.7);
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-color: #58a6ff;
    --accent-hover: #79c0ff;
    --border-color: #30363d;
    --card-bg: rgba(22, 27, 34, 0.6);
    --card-hover: rgba(48, 54, 61, 0.6);
    --success-color: #238636;
    --error-color: #da3633;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.2);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

[data-theme="light"] {
    --bg-primary: #f6f8fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f6f8fa;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --accent-color: #0969da;
    --accent-hover: #218bff;
    --border-color: #d0d7de;
    --card-bg: #ffffff;
    --card-hover: #f3f4f6;
    --success-color: #1a7f37;
    --error-color: #cf222e;
    --shadow-sm: 0 1px 3px rgba(27, 31, 35, 0.12);
    --shadow-md: 0 4px 6px rgba(27, 31, 35, 0.08);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Layout */
.app-layout {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebars */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, width 0.3s ease;
    z-index: 100;
    flex-shrink: 0;
}

.right-sidebar {
    border-right: none;
    border-left: 1px solid var(--border-color);
}

.sidebar.closed {
    width: 0;
    transform: translateX(0);
    /* We'll use width for layout flow */
    overflow: hidden;
    border: none;
}

.sidebar-header {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    height: 60px;
}

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

.brand h3 {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.sidebar-search {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-search input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.sidebar-stats {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
}

.highlight {
    color: var(--accent-color);
    font-weight: 600;
}

.tool-list,
.history-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.tool-list-item,
.history-item {
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.2s;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2px;
}

.tool-list-item:hover,
.history-item:hover {
    background: var(--card-hover);
    color: var(--text-primary);
}

.tool-number {
    font-family: monospace;
    opacity: 0.5;
    font-size: 0.75rem;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.top-bar {
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.left-controls,
.right-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.center-brand h1 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    line-height: 1;
}

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

/* Investigation Panel */
.investigation-panel {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.search-wrapper {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    width: 100%;
    max-width: 1000px;
    position: relative;
}

.category-dropdown {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 150px;
}

.category-dropdown:hover {
    border-color: var(--accent-color);
    background: var(--bg-tertiary);
}

.category-dropdown:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.category-dropdown option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

#search-input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
    height: 48px;
}

#search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.type-badge {
    position: absolute;
    right: 140px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--card-hover);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.type-badge.hidden {
    display: none;
}

.primary-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: 48px;
    /* Match input height approx */
}

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

.secondary-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

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

.full-width {
    width: 100%;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.category-section {
    margin-bottom: 2rem;
    width: 100%;
}

.category-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.tool-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.tool-category {
    font-size: 0.7rem;
    background: var(--bg-primary);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.tool-content {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    word-break: break-word;
}

.tool-actions {
    margin-top: auto;
}

.view-report-btn {
    display: block;
    text-align: center;
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem;
    border-radius: 4px;
    font-size: 0.8rem;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.view-report-btn:hover:not(.disabled) {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

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

.tool-link-btn {
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 6px;
    width: 32px;
    height: 32px;
    margin-right: 0.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.tool-link-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    /* Ensure emoji/icon contrasts well if possible, or use SVG */
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.sub-text {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Catalog */
.catalog-section {
    margin-top: 2rem;
}

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

.view-toggle {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.view-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
}

.view-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.bubble-map-container {
    min-height: 600px;
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.bubble-map-container.hidden {
    display: none;
}

.bubble-map-container svg {
    width: 100%;
    height: 100%;
}

.category-bubble {
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-bubble:hover {
    filter: brightness(1.2);
}

.category-bubble:hover circle {
    stroke-width: 4;
    fill-opacity: 0.25;
}

.category-bubble .category-label {
    pointer-events: none;
    user-select: none;
    font-family: var(--font-main);
}

.category-bubble .tool-indicator {
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-bubble .tool-indicator:hover {
    r: 6;
    fill-opacity: 1;
    stroke-width: 1.5;
}

/* Fullscreen Bubble Map Modal */
.bubble-map-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.bubble-map-modal.hidden {
    display: none;
}

.bubble-map-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.bubble-map-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.bubble-map-controls {
    display: flex;
    gap: 0.5rem;
}

.control-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
}

.control-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    transform: scale(1.05);
}

.control-btn.close-btn:hover {
    background: var(--error-color);
    border-color: var(--error-color);
}

.bubble-map-fullscreen {
    flex: 1;
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.bubble-map-fullscreen svg {
    width: 100%;
    height: 100%;
    cursor: grab;
}

.bubble-map-fullscreen svg:active {
    cursor: grabbing;
}

.bubble-map-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.category-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.category-info.hidden {
    display: none;
}

.category-info strong {
    color: var(--accent-color);
    font-weight: 600;
}

.map-instructions {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.category-bubble-interactive {
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-bubble-interactive:hover {
    filter: brightness(1.3);
}

.category-bubble-interactive:hover circle {
    stroke-width: 5;
    fill-opacity: 0.3;
}

.category-bubble-interactive .tool-indicator {
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-bubble-interactive .tool-indicator:hover {
    r: 8;
    fill-opacity: 1;
    stroke-width: 2;
}

.tool-node-group {
    pointer-events: none;
}

.tool-node-group .tool-node {
    pointer-events: all;
}

.tool-node {
    cursor: pointer;
    transition: transform 0.2s ease, fill-opacity 0.2s ease;
    transform-origin: center;
    fill-opacity: 0.5;
}

.tool-node:hover {
    transform: scale(1.25);
    fill-opacity: 0.95;
}

.catalog-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 0.75rem;
}

.catalog-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.catalog-item:hover {
    border-color: var(--accent-color);
}

.catalog-item .name {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
}

.catalog-item .desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-secondary);
    width: 90%;
    max-width: 600px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    max-height: 85vh;
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.modal-meta {
    margin-bottom: 1rem;
}

.tag {
    background: var(--bg-primary);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.guide-section {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.guide-section h3 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-content {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.action-section label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.action-row {
    display: flex;
    gap: 0.5rem;
}

.modal-input {
    flex: 1;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 0.6rem;
    border-radius: 6px;
    color: var(--text-primary);
}

/* Scrollbar */
.custom-scrollbar::-webkit-scrollbar {
    width: 6px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Spinner */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    display: none;
}

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