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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: #f5f7fa;
    color: #2d3748;
}

.container {
    display: flex;
    height: 100vh;
    background-color: #f5f7fa;
}

.sidebar {
    width: 320px;
    background-color: #ffffff;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    gap: 24px;
    overflow-y: auto;
    border-right: 1px solid #e2e8f0;
}

.canvas-container {
    flex: 1;
    background-color: #ffffff;
    position: relative;
    box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
}

#drawingCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.upload-section, .layers-section, .template-section, .export-section {
    background-color: #f8fafc;
    padding: 10px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.2s ease;
}

.upload-section:hover, .layers-section:hover, .template-section:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

h3 {
    margin-bottom: 16px;
    color: #1a202c;
    font-size: 1.1rem;
    font-weight: 600;
}

#layersList {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.layer-item {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px;
    transition: all 0.2s ease;
}

.layer-item:hover {
    border-color: #cbd5e0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.layer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.layer-title {
    font-weight: 500;
    color: #2d3748;
}

.layer-delete {
    color: #e53e3e;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

.layer-delete:hover {
    background-color: #fff5f5;
}

.template-boxes {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 13px;
}

.template-box {
    padding: 12px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    cursor: move;
    transition: all 0.2s ease;
    background-color: #ffffff;
    user-select: none;
    font-weight: 500;
    color: #4a5568;
}

.template-box-label {
    margin: 3px 0;
    border-radius: 4px;
    padding: 2px 4px;
    border: 1px solid #e2e8f0;
    background-color: white;
    display: inline-block;
    font-size: 12px;
    color: #4a5568;
    font-weight: 400;
}

.template-box:hover {
    border-color: #4299e1;
    background-color: #ebf8ff;
    transform: translateY(-1px);
}

.template-box.dragging {
    opacity: 0.6;
    border-color: #4299e1;
    background-color: #ebf8ff;
}

#imageUpload {
    width: 100%;
    padding: 16px;
    border: 2px dashed #cbd5e0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: #ffffff;
    color: #4a5568;
}

#imageUpload:hover {
    border-color: #4299e1;
    background-color: #ebf8ff;
}

.export-section {
    margin-top: auto;
}

.export-btn {
    width: 100%;
    padding: 12px;
    background-color: #4299e1;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.export-btn:hover {
    background-color: #3182ce;
    transform: translateY(-1px);
}

.control-btn {
    padding: 8px 12px;
    background-color: #edf2f7;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    color: #4a5568;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.input-field {
    width: 100%;
    padding: 8px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    font-size: 0.875rem;
    color: #4a5568;
    background-color: #ffffff;
    margin-bottom: 2px;
}

.control-btn:hover {
    background-color: #e2e8f0;
    color: #2d3748;
}

.layer-controls {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

/* Custom scrollbar */
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* Topbar styles */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 24px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 0;
}
.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}
.topbar-logo {
    height: 36px;
    margin-right: 12px;
}
.topbar-input {
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}
.topbar-right {
    display: flex;
    align-items: center;
}
.export-btn {
    margin-left: 12px;
}