:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --danger-color: #dc2626;
    --success-color: #16a34a;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.navbar .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.main-content {
    min-height: calc(100vh - 80px);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    background-color: var(--surface-hover);
}

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

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

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

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Header Section */
.header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.header-section h1 {
    font-size: 2rem;
    font-weight: bold;
}

/* Rooms Grid */
.rooms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.room-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.room-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.room-card-header h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.room-card-body p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.room-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.room-card-actions {
    display: flex;
    gap: 0.5rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--surface-color);
    border-radius: 0.5rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h2 {
    font-size: 1.25rem;
}

.close {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 1.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="color"],
.form-group textarea,
.form-group select,
.form-control {
    width: 100%;
    padding: 0.5rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
    font-size: 0.875rem;
}

.form-group textarea {
    resize: vertical;
}

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

/* Editor Layout */
.editor-layout {
    display: grid;
    grid-template-columns: 300px 1fr 300px;
    grid-template-rows: 60px 1fr;
    height: 100vh;
}

.toolbar {
    grid-column: 1 / -1;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 1rem;
}

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

.toolbar-center {
    flex: 1;
    justify-content: center;
}

.toolbar-center h2 {
    font-size: 1.125rem;
}

.sidebar {
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 1rem;
}

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

.sidebar h3 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab-btn {
    flex: 1;
    padding: 0.5rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

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

.tab-content {
    display: none;
}

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

/* Search Box */
.search-box {
    margin-bottom: 1rem;
}

.search-box input {
    width: 100%;
    padding: 0.5rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
}

/* Components List */
.components-list,
.materials-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.component-item,
.material-item {
    padding: 0.75rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
}

.component-item:hover,
.material-item:hover {
    background-color: var(--surface-hover);
    transform: translateX(4px);
}

.component-item h5,
.material-item h5 {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.component-item .badge,
.material-item .badge {
    font-size: 0.625rem;
    padding: 0.125rem 0.375rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 0.25rem;
}

/* Viewport */
.viewport {
    position: relative;
    background-color: #000;
}

#canvas-container {
    width: 100%;
    height: 100%;
}

#viewer3d {
    width: 100%;
    height: 100%;
    display: block;
}

.viewport-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    padding: 0.5rem 1rem;
    background-color: rgba(30, 41, 59, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
}

.view-btn:hover {
    background-color: rgba(51, 65, 85, 0.9);
}

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

.edit-modes {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    background-color: rgba(30, 41, 59, 0.9);
    padding: 0.5rem;
    border-radius: 0.5rem;
}

.mode-btn {
    padding: 0.5rem 1rem;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
}

.mode-btn:hover {
    background-color: rgba(51, 65, 85, 0.5);
}

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

/* Technical Elements */
.technical-elements {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.technical-btn {
    padding: 0.75rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.technical-btn:hover {
    background-color: var(--surface-hover);
}

/* Properties Panel */
.properties-panel {
    background-color: var(--bg-color);
    border-radius: 0.375rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.properties-panel h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

/* Viewer Layout */
.viewer-layout {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.viewer-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.viewer-container {
    flex: 1;
    position: relative;
    background-color: #000;
}

.viewer-info {
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

/* Library Grid */
.components-grid,
.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.component-card,
.material-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    transition: transform 0.2s;
}

.component-card:hover,
.material-card:hover {
    transform: translateY(-2px);
}

.component-thumbnail,
.material-preview {
    width: 100%;
    height: 150px;
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.component-thumbnail img,
.material-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.placeholder {
    font-size: 2rem;
    color: var(--text-muted);
}

.component-info,
.material-info {
    padding: 1rem;
}

.component-info h4,
.material-info h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.component-dims {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.library-header {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
}

.library-header .search-box {
    flex: 1;
    margin: 0;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
}

.library-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.library-tabs .tab-btn {
    background-color: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    padding: 1rem;
}

.library-tabs .tab-btn.active {
    border-bottom-color: var(--primary-color);
    background-color: transparent;
}

/* Building Tools */
.building-section {
    margin-bottom: 1.5rem;
}

.building-section h5 {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.building-btn {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-color);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.building-btn:hover {
    background-color: var(--surface-hover);
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.building-tools-panel {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(30, 41, 59, 0.95);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    min-width: 250px;
    backdrop-filter: blur(10px);
}

.tool-group {
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.tool-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.tool-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.tool-group input[type="checkbox"] {
    margin-right: 0.5rem;
}

.tool-group select,
.tool-group input[type="number"] {
    width: 100%;
    padding: 0.4rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    color: var(--text-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.button-group {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.button-group .btn {
    flex: 1;
}

.obj-prop {
    width: 100%;
    padding: 0.4rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    color: var(--text-color);
    font-size: 0.875rem;
}

.measurement-overlay {
    position: absolute;
    pointer-events: none;
    color: #ffaa00;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: bold;
}

/* Micro adjustment buttons */
.btn-micro {
    padding: 4px 6px;
    font-size: 10px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-micro:hover {
    background-color: var(--surface-hover);
    border-color: var(--primary-color);
}

.btn-micro:active {
    transform: scale(0.95);
}