:root {
    --bg-dark: #121212;
    --bg-panel: #1e1e1e;
    --bg-canvas: #0a0a0a;
    --border-color: #333333;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --danger: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Topbar */
.topbar {
    height: 56px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 10;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    font-weight: 600;
    font-size: 16px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.project-title-input {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-main);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    outline: none;
    transition: all 0.2s;
    width: 200px;
}

.project-title-input:hover {
    border-color: var(--border-color);
}

.project-title-input:focus {
    border-color: var(--primary-color);
    background: rgba(0, 0, 0, 0.2);
}

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

.btn {
    background-color: #2a2a2a;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn:hover {
    background-color: #3a3a3a;
}

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

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

.btn.outline {
    background-color: transparent;
    border-color: var(--text-muted);
}
.btn.outline:hover {
    background-color: rgba(255,255,255,0.05);
}

.btn.text {
    background-color: transparent;
    border-color: transparent;
}
.btn.text:hover {
    background-color: rgba(255,255,255,0.05);
}

/* Main Layout */
.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Left Panel */
.left-panel, .right-panel {
    width: 260px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

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

.panel-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.asset-list {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.asset-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: grab;
    transition: border-color 0.2s;
}

.asset-item:hover {
    border-color: var(--primary-color);
}

.asset-item:active {
    cursor: grabbing;
}

.asset-icon {
    width: 24px;
    height: 24px;
    background-color: var(--text-muted);
}
.asset-icon.rect { border-radius: 2px; }
.asset-icon.circle { border-radius: 50%; }
.asset-icon.text-icon {
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.disabled-overlay {
    position: absolute;
    top: 48px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--text-muted);
    z-index: 10;
    cursor: not-allowed;
    transition: opacity 0.3s;
}

/* Workspace */
.workspace {
    flex: 1;
    background-color: var(--bg-canvas);
    overflow: auto;
    position: relative;
    background-image: radial-gradient(#333 1px, transparent 1px);
    background-size: 20px 20px;
}

.canvas {
    width: 6000px;
    height: 6000px;
    position: relative;
}

/* Frame */
.frame {
    position: absolute;
    background-color: #ffffff;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    border-radius: 2px;
    overflow: hidden;
}

.frame-header {
    position: absolute;
    top: -24px;
    left: 0;
    color: var(--text-muted);
    font-size: 12px;
    pointer-events: none;
}

.frame.selected {
    outline: 2px solid var(--primary-color);
}

/* Item */
.item {
    position: absolute;
    cursor: move;
    user-select: none;
    box-sizing: border-box;
}

.item.selected {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
    z-index: 100;
}

/* Resize Handles */
.resize-handle {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: white;
    border: 1px solid var(--primary-color);
    border-radius: 50%;
    z-index: 101;
    display: none;
}
.item.selected .resize-handle {
    display: block;
}
.resize-handle.tl { top: -4px; left: -4px; cursor: nwse-resize; }
.resize-handle.tr { top: -4px; right: -4px; cursor: nesw-resize; }
.resize-handle.bl { bottom: -4px; left: -4px; cursor: nesw-resize; }
.resize-handle.br { bottom: -4px; right: -4px; cursor: nwse-resize; }

.item-content {
    width: 100%;
    height: 100%;
    display: flex;
    white-space: pre-wrap;
    word-break: break-all;
    overflow: hidden;
}

.text-edit-input {
    position: absolute;
    background: transparent;
    border: none;
    outline: 2px solid var(--primary-color);
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
    z-index: 102;
    overflow: hidden;
    display: flex;
}

/* Right panel Inspector */
.inspector-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

.inspector-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.prop-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.prop-group-row {
    display: flex;
    gap: 8px;
    align-items: center;
}
.prop-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}
.prop-input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 12px;
    width: 100%;
    outline: none;
    transition: border-color 0.2s;
}
.prop-input:focus {
    border-color: var(--primary-color);
}
.prop-input[type="color"] {
    padding: 0;
    height: 28px;
    width: 28px;
    min-width: 28px;
    cursor: pointer;
    border-radius: 4px;
}

label.transparent-check {
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    cursor: pointer;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.modal.active {
    display: flex;
}
.modal-content {
    background-color: var(--bg-panel);
    padding: 24px;
    border-radius: 12px;
    width: 300px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.modal-content h3 {
    margin-bottom: 20px;
    font-size: 16px;
}
.form-group {
    margin-bottom: 12px;
}
.form-group label {
    display: block;
    font-size: 12px;
    margin-bottom: 6px;
    color: var(--text-muted);
}
.form-group input {
    width: 100%;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: white;
    padding: 8px;
    border-radius: 4px;
    outline: none;
}
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 24px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #444;
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Context Menu */
.context-menu {
    position: fixed;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    border-radius: 6px;
    padding: 6px 0;
    min-width: 150px;
    z-index: 9999;
}
.context-item {
    padding: 8px 16px;
    font-size: 13px;
    cursor: pointer;
    color: var(--text-main);
    transition: background-color 0.2s;
}
.context-item:hover {
    background-color: var(--primary-color);
    color: white;
}
.context-item.danger:hover {
    background-color: var(--danger);
    color: white;
}

/* Align Toolbar */
.align-toolbar {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    background-color: #1a1a1a;
}
.align-title {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
}
.align-group {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}
.align-group .btn {
    flex: 1;
    padding: 4px;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Zoom Controls */
.zoom-controls {
    position: fixed;
    bottom: 24px;
    right: 284px; /* 260px right panel + 24px margin */
    background-color: rgba(30, 30, 30, 0.7);
    backdrop-filter: blur(4px);
    padding: 8px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

.zoom-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: transparent;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.2s;
}

.zoom-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--text-main);
}

.zoom-text {
    font-size: 13px;
    min-width: 48px;
    text-align: center;
    font-weight: 500;
    user-select: none;
}