/* ── Theme Variables ── */
:root {
    --bg-body: #f8f4f6;
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #999;
    --text-faint: #aaa;
    --text-disabled: #bbb;
    --text-placeholder: #ccc;

    --accent: #E66DA5;
    --accent-hover: #f0a8c8;
    --accent-glow: rgba(230,109,165,0.15);
    --accent-glow-md: rgba(230,109,165,0.25);
    --accent-glow-lg: rgba(230,109,165,0.3);

    --surface: #fff;
    --surface-raised: #fafafa;
    --surface-sunken: #fdf6f9;
    --surface-hover: #fdf0f5;

    --border: #ddd;
    --border-light: #eee;
    --border-accent: #f0dce6;
    --border-viewer: #e8d4de;

    --viewer-grad-top: #fdf6f9;
    --viewer-grad-bottom: #f0e4ec;

    --scrollbar-track: #fafafa;
    --scrollbar-thumb: #ddd;
    --scrollbar-bar-thumb: #e8d4de;

    --drawer-bg: #fff;
    --drawer-handle: #ccc;

    --cat-active-bg: #fff;
    --cat-active-shadow: rgba(230,109,165,0.15);

    --label-bg: rgba(255,255,255,0.85);

    --motion-strong: #333;
    --motion-files: #aaa;
    --motion-playing-files: rgba(255,255,255,0.7);

    --spinner-border: #f0dce6;
}

html.dark {
    --bg-body: #1a1a2e;
    --text-primary: #d4d4d8;
    --text-secondary: #999;
    --text-muted: #888;
    --text-faint: #666;
    --text-disabled: #666;
    --text-placeholder: #555;

    --surface: #1e1e30;
    --surface-raised: #262640;
    --surface-sunken: #1a1a2e;
    --surface-hover: #2d2b55;

    --border: #333360;
    --border-light: #333360;
    --border-accent: #2d2b55;
    --border-viewer: #2d2b55;

    --viewer-grad-top: #1a1a2e;
    --viewer-grad-bottom: #16162a;

    --scrollbar-track: #1a1a2e;
    --scrollbar-thumb: #3d3b65;
    --scrollbar-bar-thumb: #3d3b65;

    --drawer-bg: #1e1e30;
    --drawer-handle: #555;

    --cat-active-bg: #1e1e30;
    --cat-active-shadow: rgba(230,109,165,0.25);

    --label-bg: rgba(30,30,48,0.9);

    --motion-strong: #d4d4d8;
    --motion-files: #666;
    --motion-playing-files: rgba(255,255,255,0.7);

    --spinner-border: #2d2b55;
}

/* ── Reset ── */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { touch-action: manipulation; }
body {
    background: var(--bg-body);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-size: 13px;
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ── Loading Screen ── */
#loading-screen {
    position: fixed; inset: 0; z-index: 9999; background: var(--bg-body);
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
}
#loading-screen .spinner {
    width: 40px; height: 40px;
    border: 4px solid var(--spinner-border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
#loading-screen .label { color: var(--text-muted); font-size: 14px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── LEFT: Character Panel ── */
#viewer {
    flex: 0 0 auto; display: flex; flex-direction: column; align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--viewer-grad-top) 0%, var(--viewer-grad-bottom) 100%);
    position: relative; border-right: 1px solid var(--border-viewer);
    overflow: hidden; height: 100vh;
}
.avaFrame-wrap { overflow: hidden; }
.avaFrame {
    position: relative; width: 320px; height: 427px; overflow: hidden; cursor: crosshair;
    box-shadow: 0 4px 24px var(--accent-glow);
    background: #1a1a2e; flex-shrink: 0;
}
#live2d_wrap { position: relative; z-index: 1; width: 460px; height: 600px; }
#glcanvas { width: 428px; height: 428px; }

/* ── Shared control styles ── */
.btn-group { display: flex; gap: 4px; flex-wrap: wrap; }
.btn-group button {
    padding: 6px 12px; background: var(--surface); color: var(--text-muted);
    border: 1px solid var(--border); border-radius: 8px; font-size: 12px;
    cursor: pointer; transition: all 0.15s; min-height: 32px;
}
.btn-group button:hover { background: var(--surface-hover); border-color: var(--accent); color: var(--accent); }
.btn-group button.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.skin-swatch {
    width: 32px; height: 32px; border-radius: 50%; border: 3px solid var(--border);
    cursor: pointer; transition: all 0.15s;
}
.skin-swatch:hover { border-color: var(--accent); transform: scale(1.1); }
.skin-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow-lg); }
.skin-swatch[data-skin="1"] { background: #f5c8a8; }
.skin-swatch[data-skin="2"] { background: #ffe0c8; }
.skin-swatch[data-skin="3"] { background: #d4a07a; }

.brow-swatch {
    width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--border);
    cursor: pointer; transition: all 0.15s;
}
.brow-swatch:hover { border-color: var(--accent); transform: scale(1.15); }
.brow-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow-lg); }

.eye-swatch {
    width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--border);
    cursor: pointer; flex-shrink: 0; transition: all 0.15s;
}
.eye-swatch:hover { border-color: var(--accent); transform: scale(1.15); }
.eye-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow-lg); }

/* ── RIGHT: Pickers Panel ── */
#pickers {
    flex: 1; display: flex; flex-direction: column; overflow: hidden;
    background: var(--surface); position: relative;
    user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;
}

/* Category bar (unified: tabs + equipped previews) */
#category-bar {
    display: flex; flex-wrap: nowrap;
    background: var(--surface-sunken); border-bottom: 1px solid var(--border-accent);
    padding: 6px 8px; gap: 4px; overflow-x: auto; flex-shrink: 0;
}
#category-bar::-webkit-scrollbar { height: 4px; }
#category-bar::-webkit-scrollbar-thumb { background: var(--scrollbar-bar-thumb); border-radius: 2px; }
img { -webkit-user-drag: none; }
.cat-btn {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 6px 10px; background: transparent; border: 1.5px dashed var(--border);
    border-radius: 8px; cursor: pointer; font-size: 10px; color: var(--text-muted);
    white-space: nowrap; transition: all 0.15s; flex-shrink: 0;
}
.cat-btn .cat-icon {
    font-size: 18px; width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.cat-btn .cat-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 4px; pointer-events: none; }
.cat-btn .cat-label { font-size: 9px; }
.cat-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--surface-hover); }
.cat-btn.active {
    background: var(--cat-active-bg); border-color: var(--accent); border-style: solid;
    color: var(--accent); box-shadow: 0 1px 4px var(--cat-active-shadow);
}
.cat-btn.equipped {
    border-style: solid; border-color: var(--accent);
    background: var(--accent-glow); box-shadow: 0 0 6px var(--accent-glow);
}
.cat-btn.equipped.active {
    box-shadow: 0 0 0 2px var(--accent-glow-lg), 0 0 8px var(--accent-glow);
}

/* Item grid container */
#item-panel { flex: 1; overflow-y: auto; padding: 10px; }
#item-panel::-webkit-scrollbar { width: 6px; }
#item-panel::-webkit-scrollbar-track { background: var(--scrollbar-track); }
#item-panel::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* Item grid */
.item-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 8px;
    align-content: start;
}
.picker-item {
    aspect-ratio: 1; border: 2px solid var(--border-light); border-radius: 8px;
    cursor: pointer; overflow: hidden; position: relative;
    background: var(--surface-raised); transition: all 0.15s;
}
.picker-item:hover {
    border-color: var(--accent-hover); box-shadow: 0 2px 8px var(--accent-glow);
    transform: translateY(-1px);
}
.picker-item.selected { border-color: var(--accent); box-shadow: 0 2px 12px var(--accent-glow-md); }
.picker-item img { width: 100%; height: 100%; object-fit: cover; }
.picker-item .label {
    position: absolute; bottom: 2px; left: 2px;
    background: var(--label-bg); color: var(--text-secondary);
    font-size: 9px; padding: 1px 4px; border-radius: 4px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    max-width: calc(100% - 4px);
}

/* Emotion grid items */
.emotion-item {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.emotion-icon { font-size: 28px; line-height: 1; }

/* Empty state */
.empty-state { padding: 40px 20px; text-align: center; color: var(--text-placeholder); font-size: 13px; }

/* ── Settings button in category bar ── */
#settings-toggle {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    padding: 6px 10px; background: transparent; border: 1px solid transparent;
    border-radius: 8px; cursor: pointer; font-size: 10px; color: var(--text-muted);
    white-space: nowrap; transition: all 0.15s; flex-shrink: 0;
}
#settings-toggle .cat-icon { font-size: 18px; }
#settings-toggle:hover { background: var(--surface-hover); color: var(--accent); }

/* History clear button */
.history-clear-btn {
    display: block; width: 100%; padding: 8px; margin-bottom: 10px;
    background: var(--surface-raised); color: var(--text-muted);
    border: 1px solid var(--border); border-radius: 8px;
    font-size: 12px; cursor: pointer; transition: all 0.15s;
}
.history-clear-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Controls drawer ── */
#controls-drawer {
    display: none; position: absolute; left: 0; right: 0; bottom: 0; top: 0; z-index: 1000;
    background: var(--drawer-bg); overflow-y: auto; padding: 0 16px calc(24px + env(safe-area-inset-bottom, 0px));
    transform: translateY(100%); transition: transform 0.3s ease;
    user-select: none; -webkit-user-select: none;
}
#controls-drawer.open { display: block; transform: translateY(0); }
#controls-backdrop {
    display: none; position: absolute; inset: 0; z-index: 999;
}
#controls-backdrop.open { display: block; }
.drawer-handle {
    width: 100%; padding: 12px 0; cursor: grab; display: flex; justify-content: center;
}
.drawer-handle::after {
    content: ""; display: block; width: 48px; height: 5px;
    background: var(--drawer-handle); border-radius: 3px;
}
.drawer-section { margin-bottom: 16px; }
.drawer-section-title {
    font-size: 11px; color: var(--text-muted); font-weight: 700;
    text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px;
}
.drawer-top-btns {
    position: absolute; top: 10px; right: 12px; display: flex; gap: 4px;
}
.drawer-top-btn {
    width: 32px; height: 32px; border: none; background: transparent;
    color: var(--text-muted); font-size: 20px; cursor: pointer; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.drawer-top-btn:hover { background: var(--border-accent); color: var(--accent); }
.theme-toggle { position: relative; }
.theme-toggle svg { width: 18px; height: 18px; fill: currentColor; }
.drawer-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* ── MOBILE ── */
@media (max-width: 768px) {
    body { flex-direction: column; }

    #viewer {
        flex: 0 0 auto; padding: 0; border-right: none;
        width: 100%; height: auto; align-items: center; overflow: visible;
        position: relative;
    }
    .avaFrame-wrap { width: 100%; overflow: hidden; }
    .avaFrame { border-radius: 0; box-shadow: none; transform-origin: top left; }

    .drawer-row { gap: 8px; }
    .drawer-row .skin-swatch { width: 40px; height: 40px; border-width: 3px; }
    .drawer-row .brow-swatch { width: 32px; height: 32px; border-width: 3px; }
    .drawer-row .eye-swatch { width: 32px; height: 32px; border-width: 3px; }
    .drawer-row .btn-group { gap: 6px; }
    .drawer-row .btn-group button {
        padding: 8px 14px; font-size: 13px; min-height: 38px; border-radius: 10px;
    }

    #pickers { flex: 1; min-height: 0; }

    #category-bar { padding: 3px 4px; gap: 1px; }
    #category-bar::before, #category-bar::after {
        content: ''; flex-shrink: 0; width: 12px;
    }
    .cat-btn, #settings-toggle {
        padding: 4px 6px; font-size: 0; min-width: 0; gap: 0;
        flex-direction: row; justify-content: center; height: 28px;
    }
    .cat-btn .cat-icon, #settings-toggle .cat-icon { font-size: 16px; line-height: 1; }
    .cat-btn .cat-label { display: none; }

    #item-panel { padding: 8px; }
    .item-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 8px; }
    .picker-item .label { font-size: 10px; padding: 4px 5px; }
}

/* Small phones */
@media (max-width: 400px) {
    .item-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
}