/* ─── Design Tokens ──────────────────────────────────────────────── */
:root {
    --primary: #7C3AED;
    --primary-dim: rgba(124, 58, 237, 0.15);
    --secondary: #A78BFA;
    --accent: #F472B6;
    --bg: #0F0F1A;
    --bg-elevated: #1A1A2E;
    --bg-card: rgba(26, 26, 46, 0.7);
    --surface: rgba(255, 255, 255, 0.04);
    --border: rgba(124, 58, 237, 0.15);
    --border-strong: rgba(124, 58, 237, 0.3);
    --text: #F0E6FF;
    --text-dim: rgba(240, 230, 255, 0.6);
    --text-muted: rgba(240, 230, 255, 0.35);
    --danger: #EF4444;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --transition: 200ms ease;
    --font: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased
}

.glass {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow)
}

.app {
    max-width: 1600px;
    margin: 0 auto;
    padding: 16px
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 0 16px;
    gap: 12px;
    flex-wrap: wrap
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px
}

.header-brand .logo {
    font-size: 1.4rem
}

.header-brand h1 {
    font-size: 1.3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.header-actions {
    display: flex;
    gap: 8px
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #6D28D9);
    color: white
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
    transform: translateY(-1px)
}

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

.btn-secondary:hover:not(:disabled) {
    border-color: var(--border-strong)
}

.btn-ghost {
    background: transparent;
    color: var(--text-dim)
}

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

.btn-sm {
    padding: 5px 10px;
    font-size: 0.75rem
}

.btn-danger {
    color: var(--danger)
}

.input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.8rem;
    outline: none;
    transition: border-color var(--transition)
}

.input:focus {
    border-color: var(--primary)
}

.input::placeholder {
    color: var(--text-muted)
}

.input-sm {
    width: 80px;
    padding: 4px 8px;
    font-size: 0.75rem
}

.input-color {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
    padding: 2px
}

/* Main layout */
.main-layout {
    display: grid;
    grid-template-columns: 240px 1fr 260px;
    gap: 12px;
    min-height: calc(100vh - 100px)
}

.panel {
    display: flex;
    flex-direction: column;
    overflow: hidden
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border)
}

.panel-header h2 {
    font-size: 0.85rem;
    font-weight: 600
}

/* Icon Library */
.panel-library .search-input {
    margin: 8px 10px;
    width: calc(100% - 20px)
}

.icon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding: 10px;
    overflow-y: auto;
    flex: 1
}

.icon-item {
    aspect-ratio: 1;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    padding: 8px
}

.icon-item:hover {
    border-color: var(--primary);
    background: var(--primary-dim);
    transform: scale(1.05)
}

.icon-item svg {
    width: 100%;
    height: 100%;
    fill: var(--text)
}

/* Canvas */
.panel-canvas {
    align-items: center
}

.canvas-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    width: 100%
}

.canvas-info {
    font-size: 0.75rem;
    color: var(--text-dim)
}

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

.canvas-controls label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-dim)
}

.canvas-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: repeating-conic-gradient(rgba(255, 255, 255, 0.03) 0% 25%, transparent 0% 50%) 0 0/20px 20px
}

#canvas-svg {
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5)
}

/* Layers & Props */
.layers-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.8rem;
    margin-bottom: 4px
}

.layer-item:hover {
    background: var(--surface)
}

.layer-item.active {
    background: var(--primary-dim);
    border: 1px solid var(--primary)
}

.layer-item .layer-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0
}

.layer-item .layer-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--text)
}

.layer-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.layer-actions {
    display: flex;
    gap: 4px
}

.layer-actions button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.7rem;
    opacity: 0.5;
    transition: opacity var(--transition)
}

.layer-actions button:hover {
    opacity: 1
}

.props-section {
    padding: 12px;
    border-top: 1px solid var(--border)
}

.props-section h3 {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px
}

.props-section label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-bottom: 8px
}

.props-section input[type="range"] {
    flex: 1;
    accent-color: var(--primary);
    max-width: 120px
}

.prop-actions {
    display: flex;
    gap: 6px;
    margin-top: 12px
}

@keyframes fadeIn {
    from {
        opacity: 0
    }

    to {
        opacity: 1
    }
}

::-webkit-scrollbar {
    width: 5px
}

::-webkit-scrollbar-track {
    background: transparent
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px
}

@media(max-width:900px) {
    .main-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto
    }

    .panel-library,
    .panel-props {
        max-height: 250px
    }
}