:root {
    --bg-dark: #0d0f14;
    --bg-panel: #151922;
    --bg-panel-alt: #1c222e;
    --bg-hover: #252d3d;
    --border-color: #2a3346;
    --text-main: #eef2f8;
    --text-muted: #8b95a8;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.35);
    --gold: #f59e0b;
    --rainbow: linear-gradient(135deg, #ec4899, #8b5cf6, #3b82f6, #10b981);
    --success: #10b981;
    --danger: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    user-select: none;
}

/* Header */
.app-header {
    height: 48px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: -0.01em;
}

.brand-badge {
    background: var(--rainbow);
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 999px;
}

.header-stats {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    color: var(--text-muted);
}

.stat-pill {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 6px;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
}

/* Main Workspace */
.workspace {
    display: grid;
    grid-template-columns: 310px 1fr 370px;
    flex: 1;
    min-height: 0;
}

/* Left Sidebar: Card Browser */
.sidebar-left {
    background: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.filter-section {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.search-input {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 13px;
    outline: none;
}

.search-input:focus {
    border-color: var(--accent);
}

.filter-row {
    display: flex;
    gap: 4px;
}

.filter-btn {
    flex: 1;
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 5px 6px;
    border-radius: 5px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.filter-btn:hover {
    color: var(--text-main);
    background: var(--bg-hover);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.card-grid {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: max-content;
    gap: 8px;
    align-content: start;
}

.card-item {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.12s, border-color 0.12s;
    display: block;
    min-height: 112px;
}

.card-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-hover);
}

.card-item.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.card-thumb-wrap {
    position: relative;
    width: 100%;
    height: 86px;
    background: #090b0e;
    overflow: hidden;
}

.card-thumb-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card-meta-bar {
    padding: 5px 7px 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 11.5px;
}

.card-meta-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
}

.card-id-label {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.card-name-label {
    font-size: 10.5px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}

.card-fx-tags {
    display: flex;
    gap: 3px;
}

.fx-dot {
    font-size: 9px;
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 700;
}

.fx-dot.holo {
    background: rgba(236, 72, 153, 0.22);
    color: #f472b6;
}

.fx-dot.ptcl {
    background: rgba(59, 130, 246, 0.22);
    color: #60a5fa;
}

.fx-dot.anim {
    background: rgba(16, 185, 129, 0.22);
    color: #34d399;
}

/* Center Stage */
.center-stage {
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at center, #161b26 0%, #090b10 100%);
    min-width: 0;
    min-height: 0;
}

.stage-topbar {
    height: 46px;
    background: rgba(21, 25, 34, 0.85);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    gap: 12px;
}

.variant-tabs {
    display: flex;
    gap: 6px;
}

.variant-tab {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.variant-tab:hover {
    color: var(--text-main);
    border-color: var(--accent-hover);
}

.variant-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.stage-viewport {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    padding: 18px;
}

.stage-viewport.native-size {
    align-items: flex-start;
    justify-content: flex-start;
}

.canvas-frame {
    position: relative;
    box-shadow: 0 20px 55px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    overflow: hidden;
    background:
        linear-gradient(45deg, #12151e 25%, transparent 25%),
        linear-gradient(-45deg, #12151e 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #12151e 75%),
        linear-gradient(-45deg, transparent 75%, #12151e 75%);
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
    background-color: #0b0d13;
    max-width: 100%;
    max-height: 100%;
    aspect-ratio: 1920 / 1180;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stage-viewport.native-size .canvas-frame {
    flex-shrink: 0;
    max-width: none;
    max-height: none;
    width: 1920px;
    height: 1180px;
    min-width: 1920px;
    min-height: 1180px;
}

#card-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 12, 18, 0.72);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    z-index: 10;
}

.loading-overlay.hidden {
    display: none;
}

.stage-bottombar {
    height: 50px;
    background: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    gap: 12px;
}

.playback-controls, .view-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: all 0.15s;
}

.btn:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent-hover);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.18);
    border-color: var(--danger);
    color: #fca5a5;
}

/* Right Sidebar: Inspector & Export */
.sidebar-right {
    background: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.panel-tab {
    flex: 1;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    padding: 12px 8px;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
}

.panel-tab.active {
    color: var(--text-main);
    border-bottom-color: var(--accent);
    background: rgba(99, 102, 241, 0.06);
}

.panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.panel-body.hidden {
    display: none;
}

.card-box {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.box-title {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
}

.control-row label {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.control-col {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 12px;
}

.control-col label {
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
}

input[type="number"], select {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 6px 8px;
    border-radius: 5px;
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}

.preset-group {
    display: flex;
    gap: 4px;
}

.preset-chip {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
}

.preset-chip:hover, .preset-chip.active {
    border-color: var(--accent);
    color: var(--text-main);
    background: rgba(99, 102, 241, 0.18);
}

/* Progress bar */
.export-progress-wrap {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
}

.export-progress-wrap.hidden {
    display: none;
}

.progress-track {
    width: 100%;
    height: 8px;
    background: var(--bg-dark);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--rainbow);
    transition: width 0.08s linear;
}

.progress-status {
    font-size: 11.5px;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    font-variant-numeric: tabular-nums;
}

/* Exported file list */
.export-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 200px;
    overflow-y: auto;
}

.export-item {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 7px 9px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11.5px;
}

.export-item a {
    color: var(--accent-hover);
    text-decoration: none;
    font-weight: 600;
}

.export-item a:hover {
    text-decoration: underline;
}

/* Hierarchy tree */
.tree-list {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.tree-node {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 11.5px;
    background: rgba(0, 0, 0, 0.2);
}

.tree-node:hover {
    background: var(--bg-hover);
}

.tree-node-left {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.tree-node-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.comp-badges {
    display: flex;
    gap: 3px;
    flex-shrink: 0;
}

.comp-badge {
    font-size: 9.5px;
    padding: 1px 4px;
    border-radius: 3px;
    background: var(--bg-dark);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}