:root {
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --indigo-600: #4f46e5;
    --indigo-700: #4338ca;
    --sidebar-width: 320px;
    --header-height: 64px;
}

/* Dark Mode Overrides */
body.dark-theme {
    --slate-50: #0f172a;
    --slate-100: #1e293b;
    --slate-200: #334155;
    --slate-300: #475569;
    --slate-400: #94a3b8;
    --slate-700: #f1f5f9;
    --slate-800: #f8fafc;
    --slate-900: #ffffff;
}

body.dark-theme #sidebar,
body.dark-theme #top-toolbar,
body.dark-theme .control-card, 
body.dark-theme #status-bar {
    background-color: var(--slate-100);
    border-color: var(--slate-200);
}

body.dark-theme .input-text,
body.dark-theme .custom-select {
    background-color: var(--slate-50);
    color: var(--slate-900);
    border-color: var(--slate-200);
}

body.dark-theme .logo-text h1 { color: white; }


body.dark-theme #canvas-viewport {
    background-color: #020617;
}

body.dark-theme .checkered-bg {
    background-image: 
        linear-gradient(45deg, #1e293b 25%, transparent 25%),
        linear-gradient(-45deg, #1e293b 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #1e293b 75%),
        linear-gradient(-45deg, transparent 75%, #1e293b 75%);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--slate-50);
    color: var(--slate-800);
    height: 100vh;
    overflow: hidden;
}

/* Drag & Drop Overlay */
body.dragging::after {
    content: "Drop SVG Here";
    position: fixed;
    inset: 0;
    background: rgba(79, 70, 229, 0.9); /* Indigo overlay */
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: white;
    pointer-events: none;
}

#app {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
#sidebar {
    width: var(--sidebar-width);
    background-color: white;
    border-right: 1px solid var(--slate-200);
    display: flex;
    flex-direction: column;
    height: 100vh;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--slate-100);
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--indigo-600);
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.logo-text h1 { font-size: 18px; font-weight: 700; color: var(--slate-900); }
.logo-text p { font-size: 10px; color: var(--slate-400); text-transform: uppercase; letter-spacing: 0.05em; }

.sidebar-section {
    padding: 20px 24px;
}

.asset-selection-area {
    border-bottom: 1px solid var(--slate-100);
}

.scrollable-controls {
    flex: 1;
    overflow-y: auto;
    background-color: var(--slate-50);
}

/* Custom Scrollbar */
.scrollable-controls::-webkit-scrollbar { width: 6px; }
.scrollable-controls::-webkit-scrollbar-thumb { background: var(--slate-200); border-radius: 10px; }
.scrollable-controls::-webkit-scrollbar-thumb:hover { background: var(--slate-300); }

.section-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.custom-select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--slate-200);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    cursor: pointer;
}

.controls-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 40px;
}

.control-card {
    background: white;
    border: 1px solid var(--slate-200);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 4px;
}

.control-label { font-size: 13px; font-weight: 600; color: var(--slate-700); }

.color-row { display: flex; gap: 8px; align-items: center; margin-top: 10px; }
.input-color { width: 32px; height: 32px; border-radius: 6px; border: 1px solid var(--slate-200); cursor: pointer; padding: 0; }
.input-text { flex: 1; padding: 6px; border: 1px solid var(--slate-200); border-radius: 6px; font-family: monospace; font-size: 12px; }

.range-input { width: 100%; height: 4px; background: var(--slate-200); border-radius: 2px; -webkit-appearance: none; margin: 10px 0; }
.range-input::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; background: var(--indigo-600); border-radius: 50%; cursor: pointer; }

/* Main Area */
#main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

#top-toolbar {
    height: var(--header-height);
    background: white;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.presets-group {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
    flex: 1;
    margin-right: 24px;
    min-width: 0;
}

#presets-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0px; 
    align-items: center;
    
    -ms-overflow-style: none;
    scrollbar-width: none;
}

#presets-list::-webkit-scrollbar {
    display: none;
}

.presets-group {
    mask-image: linear-gradient(to right, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 90%, transparent 100%);
}

.btn-preset { padding: 6px 12px; font-size: 12px; font-weight: 600; border: 1px solid var(--slate-200); border-radius: 6px; cursor: pointer; background: white; margin-right: 4px; }
.btn-preset:hover { border-color: var(--indigo-600); color: var(--indigo-600); }

.btn-primary { background: var(--indigo-600); color: white; border: none; padding: 8px 16px; border-radius: 8px; font-weight: 700; cursor: pointer; }
.btn-secondary { background: none; border: 1px solid var(--slate-200); padding: 8px 16px; border-radius: 8px; font-weight: 600; cursor: pointer; color: var(--slate-600); }

#canvas-viewport { 
    flex: 1; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    padding: 40px; 
    background-color: #e5e7eb;
    overflow: hidden;
    touch-action: none; 
    user-select: none;
    -webkit-user-select: none;
}

.checkered-bg {
    background-image: linear-gradient(45deg, #f3f4f6 25%, transparent 25%),
                      linear-gradient(-45deg, #f3f4f6 25%, transparent 25%),
                      linear-gradient(45deg, transparent 75%, #f3f4f6 75%),
                      linear-gradient(-45deg, transparent 75%, #f3f4f6 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.svg-container { 
    width: 100%; 
    max-width: 500px; 
    aspect-ratio: 1; 
    background: white; 
    border-radius: 24px; 
    box-shadow: 0 20px 50px rgba(0,0,0,0.1); 
    padding: 40px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    transform-origin: 0 0;
}

.svg-container svg { width: 100%; height: auto; display: block; }

.scale-selector { display: flex; background: var(--slate-100); padding: 2px; border-radius: 8px; }
.scale-btn { padding: 4px 10px; border: none; background: none; font-size: 10px; font-weight: 800; color: var(--slate-500); cursor: pointer; border-radius: 6px; }
.scale-btn.active { background: white; color: var(--indigo-600); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }

#status-bar { height: 40px; background: white; border-top: 1px solid var(--slate-200); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; font-size: 10px; font-weight: 700; color: var(--slate-400); text-transform: uppercase; }

/* Interactive Mode Styles */
.interactive-active svg {
    cursor: crosshair !important;
}

.interactive-active path:hover,
.interactive-active circle:hover,
.interactive-active rect:hover {
    opacity: 0.8;
    stroke: var(--indigo-600);
    stroke-width: 2px;
    vector-effect: non-scaling-stroke;
}

.history-controls {
    display: flex;
    gap: 4px;
    margin-bottom: 15px;
}

.history-controls button {
    flex: 1; /* Makes buttons equal width */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

#mobile-warning {
    display: none;
}

@media (max-width: 900px) {
    
    /* Hide the entire App */
    #app {
        display: none !important;
    }

    /* Show the Warning Overlay */
    #mobile-warning {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100vh;
        width: 100vw;
        background-color: var(--slate-50);
        padding: 40px;
        text-align: center;
    }

    #mobile-warning h1 {
        font-size: 1.5rem;
        margin-bottom: 10px;
        color: var(--slate-900);
    }

    #mobile-warning p {
        color: var(--slate-600);
        margin-bottom: 5px;
    }
    
    #mobile-warning .sub-text {
        font-size: 0.85rem;
        color: var(--slate-400);
    }
}