* {
    box-sizing: border-box;
}

:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.9);
    --border-color: rgba(255, 255, 255, 0.1);
    --accent-color: #00aeffd2;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-blur: 12px;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
    width: 100vw;
}

body {
    font-family: Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
}

/* Full-screen canvas */
#columnCanvas {
    position: fixed;
    top: 48px;
    /* Below banner */
    left: 0;
    width: 100vw;
    height: calc(100vh - 48px);
    z-index: 0;
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
}

/* Left sidebar controls */
.controls-sidebar {
    position: fixed;
    left: 0;
    top: 48px;
    /* Below banner */
    width: 380px;
    height: calc(100vh - 48px);
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border-right: 1px solid var(--border-color);
    padding: 0;
    /* Padding moved to sidebar-content */
    overflow: visible;
    /* Prevent clipping of the toggle button */
    z-index: 100;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-content {
    width: 100%;
    height: 100%;
    padding: 24px;
    overflow: hidden;
    /* Changed from overflow-y: auto to allow children to fill height */
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.controls-sidebar.collapsed {
    transform: translateX(-100%);
}

/* Top right info panel */
.info-panel {
    position: fixed;
    top: 68px;
    /* 48px (banner) + 20px margin */
    right: 20px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 180px;
}

h1 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 0 12px 0;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Sidebar Toggle Button */
#sidebar-toggle {
    position: absolute;
    left: 100%;
    /* Position exactly at the right edge of the sidebar */
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    /* Slightly narrower to be less intrusive */
    height: 64px;
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: all 0.3s ease;
    padding: 0;
}

#sidebar-toggle:hover {
    color: var(--accent-color);
    background: rgba(30, 41, 59, 0.95);
}

.toggle-icon {
    font-size: 1.2rem;
    transition: transform 0.4s ease;
}

.collapsed .toggle-icon {
    transform: rotate(180deg);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group.inline-group {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.input-group.inline-group label {
    flex: 0 0 100px;
    margin: 0;
}

.input-group.inline-group input {
    flex: 1;
}

/* Make the main input container grow to fill height */
.sidebar-content>.input-group:last-of-type {
    flex: 1;
    min-height: 0;
}

/* Tabs */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
}

.tab-btn {
    flex: 1 1 30%;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(56, 189, 248, 0.3);
}

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

.tab-content {
    display: none;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
}

.tab-content.active {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* Placeholder Content */
.placeholder-content {
    background: rgba(15, 23, 42, 0.3);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.placeholder-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0 0 16px 0;
}

.placeholder-list {
    text-align: left;
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.8;
    margin: 0 0 16px 0;
    padding-left: 20px;
}

.placeholder-list li {
    margin-bottom: 0;
}

.placeholder-list strong {
    color: var(--accent-color);
}

.placeholder-hint {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-style: italic;
    margin: 0;
    opacity: 0.7;
}

label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
    font-style: italic;
}

textarea,
input[type="number"],
input[type="text"] {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 10px 12px;
    font-family: Arial, sans-serif;
    font-size: 0.85rem;
    line-height: 1.4;
    transition: border-color 0.2s, box-shadow 0.2s;
}

textarea {
    resize: none;
    height: 120px;
}

textarea:focus,
input[type="number"]:focus,
input[type="text"]:focus:not([readonly]) {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

input[readonly] {
    opacity: 0.7;
    cursor: default;
    background: rgba(15, 23, 42, 0.3);
}

/* Global Drop Overlay */
.drop-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    z-index: 5000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    border: 4px dashed var(--accent-color);
    margin: 12px;
    width: calc(100vw - 24px);
    height: calc(100vh - 24px);
    border-radius: 20px;
}

.drop-overlay.active {
    opacity: 1;
}

.drop-message {
    text-align: center;
    color: var(--accent-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.drop-message p {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

/* Display Controls */
.display-controls {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px;
}

.toggle-switch {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text-primary);
    font-weight: 500;
}

.toggle-switch input {
    display: none;
}

.slider {
    position: relative;
    width: 36px;
    height: 20px;
    background-color: rgba(15, 23, 42, 0.6);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.slider::before {
    content: "";
    position: absolute;
    height: 14px;
    width: 14px;
    left: 2px;
    bottom: 2px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    transition: all 0.2s;
}

.toggle-switch input:checked+.slider {
    background-color: rgba(56, 189, 248, 0.2);
    border-color: var(--accent-color);
}

.toggle-switch input:checked+.slider::before {
    transform: translateX(16px);
    background-color: var(--accent-color);
}

/* Legend */
.legend {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.legend-icon {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.legend-icon.vertex {
    background: #38bdf8;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
}

.legend-icon.arbitrary {
    background: #38bdf8;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
    border: 1.5px solid #fff;
}

.legend-icon.rebar {
    background: #f43f5e;
    box-shadow: 0 0 8px rgba(244, 63, 94, 0.5);
}

.legend-icon.overlap {
    background: #fbbf24;
    box-shadow: 0 0 8px rgba(251, 191, 36, 0.5);
}

/* Analysis Box */
.analysis-box {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 4px 0;
    border-bottom: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: none;
    letter-spacing: normal;
}

.stat-item div {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: Arial, sans-serif;
}

/* Viewer Controls */
.viewer-controls {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    z-index: 1000;
}

.viewer-controls button:has(svg:only-child) {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tree Dropdowns in Sidebar */
.tree-dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.tree-dropdown-menu {
    top: 100%;
    bottom: auto !important;
    right: 0;
    margin-top: 4px;
    margin-bottom: 0 !important;
    min-width: 160px;
}

.tree-item .kebab-btn {
    padding: 4px;
    color: var(--text-secondary);
}

.tree-item .kebab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.primary-btn {
    background: linear-gradient(135deg, #0ea5e9, #00aeffd2);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}

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

.success-flash {
    background: linear-gradient(135deg, #22c55e, #16a34a) !important;
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.6) !important;
    transform: scale(1.02) translateY(-2px) !important;
}

/* Popup Styles */
.draggable-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    min-width: 425px;
    max-width: 425px;
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: move;
}

.popup-header span#popup-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.add-mode .popup-header span,
.add-mode #popup-icon {
    color: #22c55e;
    /* Green for Add */
}

.edit-mode .popup-header span,
.edit-mode #popup-icon {
    color: #0ea5e9;
    /* Blue for Edit */
}

#popup-icon svg {
    display: block;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.popup-content {
    padding: 16px 20px;
    text-align: left;
    display: block !important;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-row.span-3 {
    grid-column: span 3;
}

.form-row label {
    font-size: 0.8rem;
}

.form-row input {
    width: 100%;
}

.reverse-btn {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    height: 38px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.reverse-btn:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.checkbox-group {
    display: flex;
    gap: 16px;
}

.check-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
    text-transform: none;
    letter-spacing: normal;
    font-weight: normal;
}

.check-label input[type="checkbox"] {
    cursor: pointer;
}

.popup-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.delete-btn {
    background: linear-gradient(135deg, #dc2626, #ef4444);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.delete-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

/* Scrollbar Styling */
.sidebar-content::-webkit-scrollbar {
    width: 8px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.3);
    border-radius: 4px;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: rgba(56, 189, 248, 0.3);
    border-radius: 4px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: rgba(56, 189, 248, 0.5);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-container {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 500px;
    display: flex;
    flex-direction: column;
    text-align: left;
}

/* Alert Modal Specifics */
.alert-modal {
    max-width: 450px !important;
    min-width: 320px !important;
}

.modal-input-wrapper {
    position: relative;
    width: 100%;
    text-align: left;
    margin-top: 12px;
    display: block;
}

#modal-message {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 8px 0;
    text-align: left;
    white-space: pre-wrap;
}

#modal-form-content {
    display: none;
    margin-top: 12px;
}

#modal-form-content label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.modal-input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.6) !important;
    color: var(--text-primary);
    outline: none;
    box-sizing: border-box;
    text-align: left;
    display: block;
}

.modal-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

/* Custom Autocomplete Results */
.modal-autocomplete-results {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    max-height: 200px;
    background: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: 4px;
    overflow-y: auto;
    z-index: 2100;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    display: none;
}

.modal-autocomplete-results.show {
    display: block;
}

.autocomplete-item {
    padding: 10px 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background: rgba(56, 189, 248, 0.1);
    color: var(--text-primary);
}

.primary-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: none;
    color: var(--text-secondary);
}

.primary-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 24px;
    z-index: 3000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.cookie-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cookie-content p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    max-width: 400px;
    line-height: 1.5;
}

.cookie-content .primary-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
    white-space: nowrap;
}

/* Jspreadsheet Custom Styling for Sidebar */
#vertex-spreadsheet,
#arbitrary-spreadsheet,
#rebar-spreadsheet {
    margin-top: 8px;
    width: 100%;
    flex: 1;
    min-height: 0;
    /* Important for flex children to be able to shrink */
    display: flex;
    flex-direction: column;
}

/* Ensure the spreadsheet container itself also grows */
.jexcel_container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    background: transparent !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 8px !important;
    overflow: hidden;
    /* Header stays at top, content scrolls */
}

/* The actual scrollable area inside Jspreadsheet */
.jexcel_content {
    flex: 1;
    overflow: auto !important;
    max-height: none !important;
    box-shadow: none !important;
    /* Optional: remove the shadow if it obscures depth */
}

.jexcel {
    width: 100% !important;
    border-collapse: collapse !important;
    background: rgba(15, 23, 42, 0.4) !important;
}

.jexcel>thead>tr>td {
    background: #1e293b !important;
    color: var(--accent-color) !important;
    font-size: 0.75rem !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    padding: 8px !important;
    border: 1px solid var(--border-color) !important;
    text-align: center !important;
}

/* Fix top-left corner and select-all gaps */
.jexcel_selectall,
.jexcel>thead>tr>td:first-child,
.jexcel>thead>tr>td.jexcel_label {
    background: #1e293b !important;
}

.jexcel>tbody>tr>td {
    background: transparent !important;
    color: var(--text-primary) !important;
    font-family: Arial, sans-serif !important;
    font-size: 0.85rem !important;
    padding: 6px 12px !important;
    border: 1px solid var(--border-color) !important;
}

/* Selected cell */
.jexcel>tbody>tr>td.highlight {
    background-color: rgba(56, 189, 248, 0.15) !important;
}

/* Force fixed table layout to prevent column width changes */
.jexcel {
    table-layout: fixed !important;
}

/* Lock cell dimensions */
.jexcel>tbody>tr {
    height: 34px !important;
    max-height: 34px !important;
    min-height: 34px !important;
}

.jexcel>tbody>tr>td {
    height: 34px !important;
    max-height: 34px !important;
    min-height: 34px !important;
    overflow: hidden !important;
    position: relative !important;
}

/* Editor container - absolute positioning within cell */
.jexcel_editor {
    background-color: var(--bg-color) !important;
    color: var(--text-primary) !important;
    outline: none !important;
    border: 2px solid var(--accent-color) !important;
    padding: 0 !important;
    box-shadow: none !important;
    font-family: Arial, sans-serif !important;
    font-size: 0.85rem !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    max-height: 34px !important;
    display: flex !important;
    align-items: center !important;
}

/* Force white text on ALL input elements inside editor */
.jexcel_editor input,
.jexcel_editor textarea,
.jexcel_editor input[type="text"],
input.jexcel_editor,
textarea.jexcel_editor {
    background: transparent !important;
    color: var(--text-primary) !important;
    -webkit-text-fill-color: var(--text-primary) !important;
    /* Override webkit autofill */
    border: none !important;
    outline: none !important;
    padding: 0 12px !important;
    margin: 0 !important;
    width: 100% !important;
    height: 100% !important;
    max-height: 34px !important;
    line-height: normal !important;
    box-sizing: border-box !important;
    font-family: Arial, sans-serif !important;
    font-size: 0.85rem !important;
    resize: none !important;
    overflow: hidden !important;
}


/* Ensure parent cell is the positioning context */
.jexcel>tbody>tr>td {
    position: relative !important;
}

/* Ensure row height stays stable */
.jexcel>tbody>tr {
    height: 34px !important;
}



.jexcel_content::-webkit-scrollbar {
    width: 6px;
}

.jexcel_content::-webkit-scrollbar-thumb {
    background: rgba(56, 189, 248, 0.3);
    border-radius: 3px;
}

/* Broad override for jspreadsheet editing inputs to ensure visibility and correct sizing */
.jexcel_container input,
.jexcel_container textarea,
.jexcel input,
.jexcel textarea,
.jexcel .editor {
    color: var(--text-primary) !important;
    background-color: transparent !important;
    font-family: Arial, sans-serif !important;
    font-size: 0.85rem !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    width: 100% !important;
    height: 100% !important;
    min-height: 0 !important;
    max-height: 100% !important;
    padding: 0 8px !important;
}

.top-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 48px;
    background: #0f172a;
    /* Solid background to obscure content behind it */
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border-color);
    z-index: 6000;
    display: flex;
    align-items: center;
    padding: 0 24px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
}

.breadcrumb-item {
    position: relative;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.2rem;
    font-weight: 600;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.breadcrumb-item::after {
    content: "BETA";
    position: absolute;
    bottom: -5px;
    left: -25px;
    background: var(--accent-color);
    color: white;
    font-size: 0.5rem;
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: 800;
    letter-spacing: 0.001em;
    -webkit-text-fill-color: white;
    line-height: 1;
    transform: translateX(100%);
}

.breadcrumb-icon {
    width: 24px;
    height: 24px;
    filter: drop-shadow(0 0 4px rgba(56, 189, 248, 0.4));
    -webkit-text-fill-color: initial;
    /* Reset the gradient from parent */
    transition: transform 0.2s;
}

.breadcrumb-item:hover .breadcrumb-icon {
    transform: scale(1.1);
}

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

.breadcrumb-item.home {
    display: flex;
    align-items: center;
    gap: 6px;
}

.breadcrumb-separator {
    color: var(--text-secondary);
    opacity: 0.5;
    font-size: 1.2rem;
}

.breadcrumb-current {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0.75;
}

.home-screen {
    flex: 1;
    /* Take remaining space in dashboard-main */
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

/* End of sidebar adjustments */

.home-screen.active {
    display: flex;
}



.home-tabs {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    margin-bottom: 10px;
    gap: 20px;
}

.search-container {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 16px;
    width: 350px;
    transition: all 0.3s;
    height: 36px;
}

.search-container:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
    background: rgba(15, 23, 42, 0.6);
}

.search-container svg {
    color: var(--text-secondary);
    margin-right: 12px;
}

.search-container input {
    background: none !important;
    border: none !important;
    padding: 0 !important;
    color: var(--text-primary);
    font-size: 0.95rem;
    width: 100%;
    outline: none;
    box-shadow: none !important;
}

.sort-select {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    padding: 8px 16px;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 150px;
}

.sort-select:hover {
    background: rgba(15, 23, 42, 0.6);
    border-color: var(--text-secondary);
}

.sort-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.sort-select option {
    background: var(--bg-color);
    color: var(--text-primary);
}

.search-clear {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: color 0.2s;
    margin-left: 8px;
    flex-shrink: 0;
}

.search-clear:hover {
    color: var(--text-primary);
}

.home-tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 8px 0;
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
}

.home-tab-btn:hover {
    color: var(--text-primary);
}

.home-tab-btn.active {
    color: var(--accent-color);
}

.home-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 60%;
    height: 3px;
    background: var(--accent-color);
    border-radius: 4px;
    box-shadow: 0 0 12px var(--accent-color);
}

/* Folder structure styling */
.project-folder {
    margin-bottom: 24px;
}

.folder-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.folder-header:hover {
    background: rgba(30, 41, 59, 0.6);
    border-color: var(--text-secondary);
}

.folder-icon {
    margin-right: 12px;
    color: var(--accent-color);
}

.folder-title {
    font-weight: 700;
    font-size: 1.1rem;
    flex: 1;
}

.folder-arrow {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.project-folder.open>.folder-header .folder-arrow {
    transform: rotate(90deg);
}

.folder-content {
    display: none;
    padding: 16px 0 16px 32px;
    border-left: 1px solid var(--border-color);
    margin-left: 24px;
}

.project-folder.open>.folder-content {
    display: block;
}

.level-folder {
    margin-bottom: 12px;
}

.level-header {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: rgba(15, 23, 42, 0.3);
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.level-header:hover {
    background: rgba(15, 23, 42, 0.5);
    color: var(--text-primary);
}

.level-folder.open>.level-content {
    display: block;
}

.level-content {
    display: none;
    padding-left: 20px;
    margin-bottom: 16px;
}



.empty-state {
    text-align: center;
    padding: 80px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    border: 2px dashed var(--border-color);
    border-radius: 20px;
}

.project-group {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    margin-bottom: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin: 0 0 24px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 24px;
}

.level-group {
    background: rgba(15, 23, 42, 0.3);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.level-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.sections-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    height: 100%;
    user-select: none;
    -webkit-user-select: none;
}

.section-card:hover {
    border-color: var(--accent-color);
    background: rgba(30, 41, 59, 0.9);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    z-index: 100;
    /* Ensure hovered card/menu is on top */
}

.section-preview {
    width: 100%;
    height: 120px;
    background: rgba(15, 23, 42, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.section-preview svg {
    width: 90%;
    height: 90%;
    transform: scaleY(-1);
}

.level-card .section-preview svg {
    transform: none;
}

.section-info {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.section-mark {
    font-weight: 700;
    font-size: 1.05rem;
    color: #fff;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.section-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 2px;
}

.section-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-top: 8px;
}

.section-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.15);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.selection-indicator {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.section-card.selected .selection-indicator {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.card-dropdown {
    position: relative;
}

.kebab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.kebab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.card-dropdown-menu {
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 8px;
    background: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 1000;
    min-width: 140px;
}

.card-dropdown-menu.show {
    display: block;
}

.menu-item {
    padding: 8px 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.menu-item.delete:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.action-icon {
    padding: 6px;
    border-radius: 6px;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.action-icon:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.action-icon.download:hover {
    background: none;
    color: var(--accent-color);
}

.action-icon.delete:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

/* Scrollbar for home screen */
.explorer-main::-webkit-scrollbar,
.explorer-sidebar::-webkit-scrollbar,
.projects-container::-webkit-scrollbar {
    width: 6px;
}



.explorer-main::-webkit-scrollbar-track,
.explorer-sidebar::-webkit-scrollbar-track,
.projects-container::-webkit-scrollbar-track {
    background: transparent;
}

.explorer-main::-webkit-scrollbar-thumb,
.explorer-sidebar::-webkit-scrollbar-thumb,
.projects-container::-webkit-scrollbar-thumb {
    background: rgba(56, 189, 248, 0.2);
    border-radius: 5px;
}

.explorer-main::-webkit-scrollbar-thumb:hover,
.explorer-sidebar::-webkit-scrollbar-thumb:hover,
.projects-container::-webkit-scrollbar-thumb:hover {
    background: rgba(56, 189, 248, 0.4);
}


.projects-container {
    padding: 5px 8px 40px 5px;
}


/* Explorer Layout */
.explorer-layout {
    display: flex;
    gap: 24px;
    flex: 1;
    min-height: 0;
    margin-bottom: 20px;
}




.explorer-sidebar {
    width: 280px;
    background: rgba(30, 41, 59, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    overflow-y: auto;
    flex-shrink: 0;
    max-height: 100%;
}

.explorer-main {
    flex: 1;
    background: rgba(30, 41, 59, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    overflow-y: auto;
    position: relative;
    /* For selection box */
    min-height: 0;
}

.tree-item {
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
    -webkit-user-select: none;
}

.tree-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.tree-item.active {
    background: rgba(56, 189, 248, 0.08);
    color: var(--accent-color);
    font-weight: 600;
    position: relative;
}

.tree-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background: var(--accent-color);
    border-radius: 0 4px 4px 0;
}

.tree-level {
    padding-left: 24px;
    margin-top: 4px;
}

.tree-folder-icon {
    width: 16px;
    height: 16px;
    color: var(--accent-color);
}

.explorer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.section-card.selected {
    border-color: var(--accent-color);
    background: rgba(56, 189, 248, 0.1);
    box-shadow: 0 0 0 2px var(--accent-color);
}

/* Selection Box */
.selection-box {
    position: absolute;
    border: 1px solid var(--accent-color);
    background: rgba(56, 189, 248, 0.1);
    pointer-events: none;
    z-index: 1000;
}

/* List View Styles */
.list-view-grid {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 100%;
}

.list-header {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    /* background: #1e293b; */
    /* Solid background restored */
    border-bottom: 2px solid var(--accent-color);
    /* More obvious accent border */
    font-size: 0.7rem;
    font-weight: 800;
    color: #fff;
    /* Brighter text */
    text-transform: uppercase;
    letter-spacing: 1px;
    position: sticky;
    top: 0;
    z-index: 10;
    margin-bottom: 8px;
    /* Gap between header and first item */
}

.list-header>div {
    flex-shrink: 0;
}

.header-indicator {
    width: 32px;
}

.header-preview {
    width: 56px;
}

.header-mark {
    flex: 1;
    min-width: 120px;
}

.header-level {
    width: 140px;
    padding: 0 8px;
}

.header-project {
    width: 180px;
    padding: 0 8px;
}

.header-date {
    width: 180px;
    text-align: right;
}

.header-actions {
    width: 48px;
}

/* Base card width elements in list view */
.list-view-grid .selection-indicator,
.list-view-grid .section-preview,
.list-view-grid .section-level,
.list-view-grid .section-project,
.list-view-grid .section-date,
.list-view-grid .card-dropdown {
    flex-shrink: 0;
}

.list-view-grid .section-card {
    flex-direction: row;
    height: 52px;
    align-items: center;
    padding: 0 16px;
    background: rgba(30, 41, 59, 0.3);
    border-radius: 8px;
    margin-bottom: 2px;
    border: 1px solid transparent;
    overflow: visible;
    /* Allow dropdowns to be seen */
}

.list-view-grid .selection-indicator {
    order: -2;
    width: 18px;
    height: 18px;
    margin-right: 14px;
    /* Matches .header-indicator total width 32px */
    display: flex;
    align-items: center;
    justify-content: center;
}

.list-view-grid .section-preview {
    order: -1;
    width: 36px;
    height: 36px;
    margin-right: 20px;
    /* 36 + 20 = 56px, matches .header-preview */
    background: rgba(15, 23, 42, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.list-view-grid .section-mark {
    flex: 1;
    min-width: 120px;
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.list-view-grid .section-level {
    width: 140px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0 8px;
}

.list-view-grid .section-project {
    width: 180px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0 8px;
}

.list-view-grid .section-date {
    width: 180px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: right;
    margin-top: 0;
}

.list-view-grid .card-dropdown {
    width: 48px;
    /* Matches .header-actions */
    display: flex;
    justify-content: flex-end;
}

.list-view-grid .section-footer {
    display: none;
    /* Not used in list view */
}

.list-view-grid .card-dropdown-menu {
    bottom: auto;
    top: 100%;
    margin-top: 4px;
    margin-bottom: 0;
}

/* View Switch Buttons */
.view-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

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

.view-btn.active {
    background: var(--accent-color);
    color: #fff;
}