:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --secondary: #8b5cf6;
    --warning: #f59e0b;
    --danger: #ef4444;
    /* Deep Charcoal Theme 2026 */
    --deep-charcoal: #1a1d29;
    --charcoal-lighter: #252936;
    --charcoal-border: #2d3142;
    --neon-blue: #00d4ff;
    --neon-blue-glow: #00a3cc;
    --neon-blue-dim: #0088aa;
    /* Original dark theme (fallback) */
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --dark-border: #334155;
    --dark-text: #f8fafc;
    --dark-subtext: #94a3b8;
    --light-bg: #f8fafc;
    --light-card: #ffffff;
    --light-border: #e2e8f0;
    --light-text: #1e293b;
    --light-subtext: #64748b;
    --shadow: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.15);
    --header-height: 70px;
    --footer-height: 60px;
    --sidebar-width: 320px;
    --container-max-width: 1400px;
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--dark-text);
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body.light-theme {
    /* Override CSS variables for light theme */
    --dark-bg: var(--light-bg);
    --dark-card: var(--light-card);
    --dark-border: var(--light-border);
    --dark-text: var(--light-text);
    --dark-subtext: var(--light-subtext);
    
    background: var(--light-bg);
    color: var(--light-text);
}

/* ============ HEADER ============ */
.main-header {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-card) 100%);
    height: var(--header-height);
    border-bottom: 1px solid var(--dark-border);
    transition: all 0.3s;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    z-index: 1000;
    position: sticky;
    top: 0;
    width: 100%;
}

.header-container {
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.light-theme .main-header {
    background: linear-gradient(135deg, var(--light-card) 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--light-border);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--dark-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.light-theme .logo {
    color: var(--light-text);
}

.logo-icon {
    color: var(--primary);
    font-size: 28px;
    transition: transform 0.3s;
}

.logo:hover .logo-icon {
    transform: rotate(20deg);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--dark-card);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid var(--dark-border);
    color: var(--dark-subtext);
}

.light-theme .theme-toggle {
    background: var(--light-card);
    border: 1px solid var(--light-border);
    color: var(--light-subtext);
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: rotate(15deg);
    border-color: var(--primary);
}

.version-tag {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* ============ NAVIGATION ============ */
.main-nav {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 0 40px;
}

.nav-link {
    color: var(--dark-subtext);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
}

.nav-link.active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--primary);
    font-weight: 600;
}

/* ============ APP LAYOUT ============ */
.app-main {
    flex: 1;
    display: flex;
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 30px;
    gap: 30px;
    position: relative;
}

.app-sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    flex-shrink: 0;
    padding: 25px 0;
    position: sticky;
    top: calc(var(--header-height) + 25px);
    height: calc(100vh - var(--header-height) - var(--footer-height) - 50px);
    overflow-y: auto;
}

.ui-layer {
    background: rgba(15, 23, 42, 0.95);
    padding: 25px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s;
    width: 100%;
}

.light-theme .ui-layer {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0,0,0,0.1);
}

.app-content {
    flex: 1;
    min-width: 0;
    padding: 25px 0;
    width: 100%;
}

/* ============ CONTENT HEADER ============ */
.content-header {
    background: rgba(30, 41, 59, 0.8);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.content-title h2 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--dark-text);
}

.content-title p {
    color: var(--dark-subtext);
    font-size: 14px;
}

.repo-stats {
    display: flex;
    gap: 20px;
    margin-top: 10px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--dark-subtext);
    font-size: 14px;
}

/* ============ VIEW SECTIONS ============ */
.view-section {
    display: none;
    flex: 1;
    background: rgba(15, 23, 42, 0.7);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    overflow: hidden;
}

.view-section.active {
    display: flex;
    flex-direction: column;
}

.view-toolbar {
    background: rgba(30, 41, 59, 0.9);
    padding: 15px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.view-toolbar h3 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ============ CONTROLS ============ */
.section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.section-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.controls-section {
    margin: 20px 0;
}

.controls-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark-subtext);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ============ INPUT GROUP ============ */
.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.input-group input {
    flex: 3;
    min-width: 250px;
    padding: 14px 18px;
    border-radius: 10px;
    border: 1px solid var(--dark-border);
    background: rgba(15, 23, 42, 0.8);
    color: var(--dark-text);
    font-size: 15px;
    outline: none;
    transition: all 0.3s;
}

.light-theme .input-group input {
    background: white;
    border: 1px solid var(--light-border);
    color: var(--light-text);
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.input-group button {
    flex: 1;
    padding: 14px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 100px;
}

.input-group #analyzeBtn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
}

.input-group #analyzeBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.input-group #pasteBtn {
    background: rgba(139, 92, 246, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.input-group #pasteBtn:hover {
    background: rgba(139, 92, 246, 0.2);
    border-color: var(--secondary);
    transform: translateY(-2px);
}

/* ============ VIEW TOGGLE ============ */
.view-toggle {
    display: flex;
    background: rgba(30, 41, 59, 0.8);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
}

.view-btn {
    flex: 1;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--dark-subtext);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.view-btn:hover {
    background: rgba(255,255,255,0.05);
}

.view-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* ============ BUTTONS ============ */
.tool-buttons, .export-buttons {
    display: flex;
    gap: 10px;
}

.btn-primary, .btn-secondary, .btn-export, .btn-toolbar {
    padding: 10px 16px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(30, 41, 59, 0.8);
    color: var(--dark-subtext);
    border: 1px solid var(--dark-border);
}

.btn-secondary:hover {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    border-color: var(--primary);
}

.btn-export {
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

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

.btn-toolbar {
    padding: 8px 12px;
    background: rgba(30, 41, 59, 0.8);
    color: var(--dark-subtext);
    border: 1px solid var(--dark-border);
    font-size: 13px;
}

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

/* ============ STATUS ============ */
.status-container {
    margin: 15px 0;
}

.status-box {
    padding: 12px 16px;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-box.info {
    color: var(--primary);
}

.status-box.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--primary);
}

.status-box.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.status-box.warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

/* ============ METRICS PREVIEW ============ */
.metrics-preview {
    margin-top: 20px;
    padding: 15px;
    background: rgba(30, 41, 59, 0.8);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 10px;
}

.metric-card {
    background: rgba(15, 23, 42, 0.6);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.metric-label {
    font-size: 11px;
    color: var(--dark-subtext);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============ TREE CONTAINER ============ */
.tree-container-wrapper {
    flex: 1;
    overflow: auto;
    padding: 20px;
}

.tree-container {
    font-family: 'SF Mono', Monaco, Consolas, monospace;
    font-size: 13px;
}

.tree-node {
    margin: 2px 0;
}

.tree-node-header {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.tree-node-header:hover {
    background: rgba(16, 185, 129, 0.1);
}

.tree-node-header.folder {
    color: var(--primary-light);
    font-weight: 500;
}

.tree-node-header.file {
    color: var(--dark-subtext);
}

.tree-icon {
    width: 20px;
    text-align: center;
    margin-right: 8px;
    transition: transform 0.2s;
}

.tree-icon.expanded {
    transform: rotate(90deg);
}

.tree-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-badge {
    background: rgba(16, 185, 129, 0.2);
    color: var(--primary-light);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    margin-left: 8px;
    font-weight: 600;
}

.tree-count {
    margin-left: 8px;
    font-size: 11px;
    color: var(--dark-subtext);
    background: rgba(30, 41, 59, 0.5);
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
}

.tree-size {
    margin-left: 10px;
    font-size: 12px;
    color: var(--dark-subtext);
    background: rgba(30, 41, 59, 0.5);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, Consolas, monospace;
}

.tree-node-children {
    margin-left: 24px;
    padding-left: 12px;
    border-left: 1px dashed rgba(255, 255, 255, 0.15);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.tree-node-children.expanded {
    max-height: 5000px;
}

/* ============ SEARCH BOX ============ */
.search-box {
    position: relative;
    width: 250px;
}

.search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--dark-text);
    font-size: 14px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--dark-subtext);
}

/* ============ TOOLBAR ============ */
.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.toolbar-actions {
    display: flex;
    gap: 8px;
}

/* ============ METRICS VIEW ============ */
.metrics-container {
    padding: 20px;
}

.charts-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.chart-box {
    background: rgba(30, 41, 59, 0.7);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}

.chart-box h4 {
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
    color: var(--dark-subtext);
}

.chart-placeholder, .stats-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    color: var(--dark-subtext);
    text-align: center;
    gap: 15px;
}

.chart-placeholder i {
    font-size: 48px;
    opacity: 0.3;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    width: 100%;
}

/* ============ LOADING STATE ============ */
.loading-state {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.loading-state.hidden {
    display: none;
}

.loading-state .spinner {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 20px;
}

.loading-state p {
    color: var(--dark-subtext);
    font-size: 16px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============ FOOTER ============ */
.main-footer {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-card) 100%);
    border-top: 1px solid var(--dark-border);
    height: var(--footer-height);
    transition: all 0.3s;
    flex-shrink: 0;
    margin-top: auto;
    display: flex;
    align-items: center;
}

.footer-container {
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.light-theme .main-footer {
    background: linear-gradient(135deg, var(--light-card) 0%, #f1f5f9 100%);
    border-top: 1px solid var(--light-border);
}

.footer-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-text {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--dark-subtext);
    font-size: 13px;
}

.footer-separator {
    color: var(--dark-border);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-link {
    color: var(--dark-subtext);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.light-theme .footer-link {
    color: var(--light-subtext);
}

.footer-link:hover {
    color: var(--primary);
    transform: translateY(-1px);
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(30, 41, 59, 0.5);
    border-radius: 4px;
}

.light-theme ::-webkit-scrollbar-track {
    background: rgba(226, 232, 240, 0.5);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-border);
    border-radius: 4px;
}

.light-theme ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

/* ============ RESPONSIVIDADE ============ */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 280px;
        --container-max-width: 100%;
    }
    
    .app-main {
        padding: 0 20px;
        gap: 20px;
    }
    
    .header-container,
    .footer-container {
        padding: 0 20px;
    }
}

@media (max-width: 992px) {
    :root {
        --sidebar-width: 250px;
    }
    
    .app-main {
        flex-direction: column;
    }
    
    .app-sidebar {
        width: 100%;
        max-width: 100%;
        min-width: 100%;
        position: relative;
        top: 0;
        height: auto;
        padding: 20px 0;
    }
    
    .ui-layer {
        max-width: 100%;
    }
    
    .app-content {
        padding-top: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --footer-height: auto;
    }
    
    .app-main {
        padding: 0 15px;
        gap: 15px;
    }
    
    .header-container,
    .footer-container {
        padding: 0 15px;
    }
    
    .main-nav {
        display: none;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .logo-icon {
        font-size: 24px;
    }
    
    .version-tag {
        padding: 5px 12px;
        font-size: 11px;
    }
    
    .theme-toggle {
        width: 38px;
        height: 38px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .input-group input,
    .input-group button {
        width: 100%;
    }
    
    .input-group button {
        min-width: 100%;
    }
    
    .view-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .toolbar-right {
        width: 100%;
        flex-direction: column;
        gap: 10px;
    }
    
    .search-box {
        width: 100%;
    }
    
    .toolbar-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .footer-info {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 55px;
    }
    
    .app-main {
        padding: 0 10px;
    }
    
    .header-container {
        padding: 0 15px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .logo-icon {
        font-size: 22px;
    }
    
    .version-tag {
        display: none;
    }
    
    .ui-layer {
        padding: 20px;
    }
    
    .content-header {
        flex-direction: column;
        gap: 15px;
    }
    
    .repo-stats {
        justify-content: space-between;
    }
    
    .tool-buttons, .export-buttons {
        flex-direction: column;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}

/* Adicione estas regras no final do style.css */

/* Estilos para o gráfico */
.chart-container {
    position: relative;
    width: 100%;
    height: 100%;
}

canvas {
    max-width: 100%;
    max-height: 100%;
}

/* Ajustes para modo claro */
.light-theme .chart-box {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.light-theme .chart-box h4 {
    color: var(--light-subtext);
}

/* Melhorar responsividade do gráfico */
@media (max-width: 768px) {
    .charts-row {
        grid-template-columns: 1fr;
    }
    
    .chart-box {
        padding: 15px;
    }
}

/* ============ SKELETON SCREEN ============ */
:root {
    --skeleton-fade-delay-base: 50ms;
    --skeleton-shimmer-delay-base: 100ms;
    --skeleton-color-dark: rgba(55, 65, 81, 0.5);
    --skeleton-color-light: rgba(203, 213, 225, 0.8);
}

.skeleton-container {
    padding: 20px;
    width: 100%;
}

.skeleton-tree-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    opacity: 0;
    animation: skeletonFadeIn 0.3s ease-in-out forwards;
}

/* Staggered delay for cascade effect */
.skeleton-tree-item:nth-child(1) { animation-delay: calc(0 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(2) { animation-delay: calc(1 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(3) { animation-delay: calc(2 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(4) { animation-delay: calc(3 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(5) { animation-delay: calc(4 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(6) { animation-delay: calc(5 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(7) { animation-delay: calc(6 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(8) { animation-delay: calc(7 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(9) { animation-delay: calc(8 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(10) { animation-delay: calc(9 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(11) { animation-delay: calc(10 * var(--skeleton-fade-delay-base)); }
.skeleton-tree-item:nth-child(12) { animation-delay: calc(11 * var(--skeleton-fade-delay-base)); }

.skeleton-icon {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    background: var(--skeleton-color-dark);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.light-theme .skeleton-icon {
    background: var(--skeleton-color-light);
}

.skeleton-bar {
    height: 16px;
    border-radius: 6px;
    background: var(--skeleton-color-dark);
    position: relative;
    overflow: hidden;
}

.light-theme .skeleton-bar {
    background: var(--skeleton-color-light);
}

/* Shimmer effect with linear gradient */
.skeleton-icon::after,
.skeleton-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.15) 50%,
        transparent 100%
    );
    animation: shimmer 2s ease-in-out infinite;
}

.light-theme .skeleton-icon::after,
.light-theme .skeleton-bar::after {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.6) 50%,
        transparent 100%
    );
}

/* Staggered shimmer delay for cascade effect */
.skeleton-tree-item:nth-child(1) .skeleton-icon::after,
.skeleton-tree-item:nth-child(1) .skeleton-bar::after { animation-delay: calc(0 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(2) .skeleton-icon::after,
.skeleton-tree-item:nth-child(2) .skeleton-bar::after { animation-delay: calc(1 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(3) .skeleton-icon::after,
.skeleton-tree-item:nth-child(3) .skeleton-bar::after { animation-delay: calc(2 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(4) .skeleton-icon::after,
.skeleton-tree-item:nth-child(4) .skeleton-bar::after { animation-delay: calc(3 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(5) .skeleton-icon::after,
.skeleton-tree-item:nth-child(5) .skeleton-bar::after { animation-delay: calc(4 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(6) .skeleton-icon::after,
.skeleton-tree-item:nth-child(6) .skeleton-bar::after { animation-delay: calc(5 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(7) .skeleton-icon::after,
.skeleton-tree-item:nth-child(7) .skeleton-bar::after { animation-delay: calc(6 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(8) .skeleton-icon::after,
.skeleton-tree-item:nth-child(8) .skeleton-bar::after { animation-delay: calc(7 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(9) .skeleton-icon::after,
.skeleton-tree-item:nth-child(9) .skeleton-bar::after { animation-delay: calc(8 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(10) .skeleton-icon::after,
.skeleton-tree-item:nth-child(10) .skeleton-bar::after { animation-delay: calc(9 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(11) .skeleton-icon::after,
.skeleton-tree-item:nth-child(11) .skeleton-bar::after { animation-delay: calc(10 * var(--skeleton-shimmer-delay-base)); }
.skeleton-tree-item:nth-child(12) .skeleton-icon::after,
.skeleton-tree-item:nth-child(12) .skeleton-bar::after { animation-delay: calc(11 * var(--skeleton-shimmer-delay-base)); }

/* Pulse animation for smooth opacity */
.skeleton-icon,
.skeleton-bar {
    animation: skeletonPulse 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes skeletonPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

@keyframes skeletonFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Indentation levels for tree structure */
.skeleton-tree-item.level-0 { padding-left: 0; }
.skeleton-tree-item.level-1 { padding-left: 24px; }
.skeleton-tree-item.level-2 { padding-left: 48px; }
.skeleton-tree-item.level-3 { padding-left: 72px; }

/* Variable widths for bars (60% to 90%) */
.skeleton-bar.width-60 { width: 60%; }
.skeleton-bar.width-65 { width: 65%; }
.skeleton-bar.width-70 { width: 70%; }
.skeleton-bar.width-75 { width: 75%; }
.skeleton-bar.width-80 { width: 80%; }
.skeleton-bar.width-85 { width: 85%; }
.skeleton-bar.width-90 { width: 90%; }

/* Dark mode optimized colors - graphite and deep gray to avoid harsh contrast */
body:not(.light-theme) .skeleton-icon {
    background: var(--skeleton-color-dark);
}

body:not(.light-theme) .skeleton-bar {
    background: var(--skeleton-color-dark);
}


/* ============ DEEP CHARCOAL DARK MODE 2026 ============ */
body.dark-theme,
body:not(.light-theme) {
    background: var(--deep-charcoal);
}

body.dark-theme .main-header,
body:not(.light-theme) .main-header {
    background: linear-gradient(135deg, var(--deep-charcoal) 0%, var(--charcoal-lighter) 100%);
    border-bottom: 1px solid var(--charcoal-border);
}

body.dark-theme .card,
body:not(.light-theme) .card {
    background: var(--charcoal-lighter);
    border-color: var(--charcoal-border);
}

/* Neon Blue Accents */
.accent-neon {
    color: var(--neon-blue);
}

.btn-neon {
    background: var(--neon-blue);
    color: #000;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-neon:hover {
    background: var(--neon-blue-glow);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
    transform: translateY(-2px);
}

/* Glassmorphism Effects */
.glassmorphism {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.glassmorphism-strong {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Impact Highlight for Modified Files */
.file-impact-high {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 212, 255, 0.05) 100%);
    border-left: 3px solid var(--neon-blue);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    animation: glow-pulse 2s ease-in-out infinite;
}

.file-impact-medium {
    background: rgba(0, 212, 255, 0.1);
    border-left: 2px solid var(--neon-blue-glow);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.file-impact-low {
    background: rgba(0, 212, 255, 0.05);
    border-left: 1px solid var(--neon-blue-dim);
}

@keyframes glow-pulse {
    0%, 100% {
        box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 25px rgba(0, 212, 255, 0.5);
    }
}

/* Zero Layout Shift - Reserved Dimensions */
.tree-container-reserved {
    min-height: 400px;
    width: 100%;
    position: relative;
}

.tree-container-reserved::before {
    content: '';
    display: block;
    padding-bottom: 100%;
    /* Maintains aspect ratio */
}

/* Keyboard Navigation Focus Styles */
.tree-item:focus,
.tree-folder:focus,
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--neon-blue);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Enhanced Tree Item Styles with Accessibility */
.tree-item,
.tree-folder {
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.tree-item:hover,
.tree-folder:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateX(2px);
}

.tree-item[aria-selected="true"],
.tree-folder[aria-expanded="true"] {
    background: rgba(0, 212, 255, 0.15);
    border-left: 3px solid var(--neon-blue);
}

/* Smooth Transitions - Applied to interactive elements */
.tree-item,
.tree-folder,
button,
a,
input,
select,
.card,
.sidebar,
.modal {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--deep-charcoal);
}

::-webkit-scrollbar-thumb {
    background: var(--neon-blue-dim);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neon-blue);
}

/* Loading State Improvements */
.loading-shimmer {
    background: linear-gradient(
        90deg,
        rgba(148, 163, 184, 0.1) 0%,
        rgba(148, 163, 184, 0.2) 50%,
        rgba(148, 163, 184, 0.1) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Responsive Improvements */
@media (max-width: 768px) {
    .bento-panel {
        max-width: 100% !important;
        margin: 0;
        border-radius: 1rem 1rem 0 0;
    }
}

/* Print Styles */
@media print {
    .bento-panel-overlay,
    #cookie-banner {
        display: none !important;
    }
}