:root{
  --fg:#0b1220; --bg:#ffffff; --muted:#64748b; --border:#e5e7eb;
  --card:#fff; --accent:#0ea5e9; --radius:16px; --gap:12px;
  --shadow:0 8px 24px rgba(2,6,23,.06);
  --success:#10b981; --error:#ef4444; --warning:#f59e0b;
}
.irp-lite{font-family:system-ui,-apple-system,Segoe UI,Roboto,"Noto Sans JP",sans-serif;color:var(--fg);background:var(--bg)}
.irp-head{position:sticky;top:0;display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border);background:#fff;z-index:10}
.irp-title{font-size:18px;font-weight:700}
.irp-badge{font-size:12px;margin-left:8px;padding:2px 8px;border:1px solid var(--border);border-radius:999px;color:var(--muted)}
.irp-head-actions{display:flex;gap:8px;align-items:center}
.irp-main{display:grid;grid-template-columns:1.4fr .8fr;gap:20px;max-width:1100px;margin:18px auto;padding:0 16px}
@media (max-width:960px){.irp-main{grid-template-columns:1fr}}
.irp-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.irp-drop{display:flex;align-items:center;justify-content:center;min-height:140px;border-style:dashed;transition:border-color .2s, background .2s}
.irp-drop.is-drag{border-color:var(--accent);background:linear-gradient(180deg,#f0f9ff,#ffffff)}
.irp-drop:hover{border-color:var(--accent);box-shadow:0 10px 26px rgba(14,165,233,.12)}
.irp-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:var(--gap);margin-top:16px}
.irp-thumb{position:relative;border:1px solid var(--border);border-radius:12px;overflow:hidden;background:#f8fafc}
.irp-thumb img{display:block;width:100%;height:100%;object-fit:cover}
.irp-thumb .irp-close{position:absolute;top:6px;right:6px;display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border:1px solid var(--border);background:#fff;border-radius:999px;font-size:14px;line-height:1;cursor:pointer;z-index:2}
.irp-thumb .irp-close:hover{border-color:var(--error);background:var(--error);color:#fff}
.irp-thumb button{position:absolute;right:6px;bottom:6px;border:1px solid var(--border);background:#fff;border-radius:10px;padding:4px 8px;font-size:12px;z-index:1}
.irp-thumb-size{position:absolute;bottom:6px;left:6px;background:rgba(0,0,0,0.7);color:#fff;padding:2px 6px;border-radius:6px;font-size:10px;z-index:1}
.irp-preview{margin-top:16px}
.irp-canvas{width:100%;max-height:420px;background:#f8fafc;border:1px solid var(--border);border-radius:12px}
.irp-preview-tools{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.irp-preview-tools .irp-btn{border-radius:12px;padding:6px 10px;border:1px solid var(--border);background:var(--card);color:var(--fg);cursor:pointer;transition:background 0.2s,border-color 0.2s}
.irp-preview-tools .irp-btn:hover{border-color:var(--accent);background:#f0f9ff}
.irp-right .irp-panel label{display:block;font-size:14px;color:#0f172a;margin-bottom:8px}
.irp-right .irp-panel label.is-disabled{opacity:0.5;pointer-events:none}
.irp-hint{display:block;font-size:11px;color:var(--muted);margin-top:4px;font-weight:normal}
.irp-size-row{display:flex;gap:8px;align-items:center;margin-bottom:10px}
.irp-size-row input{width:100%;padding:8px;border:1px solid var(--border);border-radius:10px}
.irp-chip{display:inline-block;border:1px solid var(--border);padding:6px 10px;border-radius:999px;margin:4px 6px 0 0;cursor:pointer;font-size:12px;user-select:none}
.irp-chip:hover{border-color:var(--accent)}
.irp-chip.is-active{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.irp-btn{border-radius:12px;padding:8px 12px;border:1px solid var(--border);background:var(--card);color:var(--fg);cursor:pointer;transition:background 0.2s,border-color 0.2s;display:inline-flex;align-items:center;gap:6px;font-size:14px}
.irp-btn:hover{border-color:var(--accent);background:#f0f9ff}
.irp-btn--primary{background:var(--accent);border-color:transparent;color:#fff;font-weight:600}
.irp-btn--primary:hover{background:#0284c7}
.irp-btn--success{background:var(--success);border-color:transparent;color:#fff;font-weight:600}
.irp-btn--success:hover{background:#059669}
.irp-btn--icon{padding:6px 12px}
.irp-btn svg{flex-shrink:0;width:18px;height:18px}
.irp-btn--primary svg{stroke:#fff}
.irp-btn--success svg{stroke:#fff}
.irp-foot{position:sticky;bottom:0;display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-top:1px solid var(--border);background:#fff;flex-wrap:wrap;gap:12px}
.irp-foot-left{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.irp-foot-right{display:flex;gap:8px}
.irp-status{margin-left:10px;color:var(--muted);font-size:12px}
.irp-size-info{color:var(--muted);font-size:12px;margin-left:8px}
.irp-progress-wrap{flex-basis:100%;order:3;margin-top:4px}
.irp-progress-bar{height:6px;background:#e5e7eb;border-radius:999px;overflow:hidden;margin-bottom:6px}
.irp-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#06b6d4);transition:width 0.3s ease;border-radius:999px}
.irp-progress-text{font-size:12px;color:var(--muted);text-align:center}
/* Segmented controls / chips */
.irp-seg{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
/* Help/Description box */
.irp-helpbox{margin:16px 0;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#f8fafc;color:#0f172a}
.irp-helpbox h4{margin:0 0 6px 0;font-size:14px}
.irp-helpbox p{margin:0;font-size:13px;color:var(--muted)}
.irp-helpbox kbd{display:inline-block;padding:2px 6px;background:#fff;border:1px solid var(--border);border-radius:4px;font-size:11px;font-family:monospace;box-shadow:0 1px 2px rgba(0,0,0,0.1)}
.irp-helpbox details{font-size:13px}
.irp-helpbox details summary{margin-bottom:4px}
/* Before/After Compare */
.irp-compare{margin-top:16px}
.irp-compare-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.irp-compare-header h4{margin:0;font-size:14px;font-weight:600}
.irp-compare-mode{display:flex;gap:4px}
.irp-btn--sm{padding:4px 10px;font-size:12px;border-radius:8px}
.irp-btn--sm.is-active{background:var(--accent);color:#fff;border-color:transparent}
.irp-compare-container{position:relative;width:100%;overflow:hidden;border-radius:12px;background:#f8fafc}
.irp-compare-canvas{display:block;width:100%;height:auto;max-height:400px;object-fit:contain}
.irp-compare-overlay{position:absolute;top:0;left:0;right:0;bottom:0;overflow:hidden;width:50%;clip-path:inset(0 0 0 0)}
.irp-compare-divider{position:absolute;top:0;bottom:0;left:50%;width:2px;background:#fff;cursor:ew-resize;z-index:10;transform:translateX(-1px)}
.irp-compare-handle{position:absolute;top:50%;left:50%;width:40px;height:40px;background:#fff;border:2px solid var(--accent);border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 2px 8px rgba(0,0,0,0.2)}
.irp-compare-handle::before,.irp-compare-handle::after{content:'';position:absolute;top:50%;width:8px;height:2px;background:var(--accent);transform:translateY(-50%)}
.irp-compare-handle::before{left:8px}
.irp-compare-handle::after{right:8px}
.irp-compare-labels{display:flex;justify-content:space-between;margin-top:8px;font-size:12px;color:var(--muted)}
.irp-compare-side-wrap{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.irp-compare-item{position:relative}
.irp-compare-item canvas{width:100%;border-radius:12px;background:#f8fafc;border:1px solid var(--border)}
.irp-compare-item .irp-compare-label{display:block;text-align:center;margin-top:6px;font-size:12px;color:var(--muted)}
/* Preset Save */
.irp-preset-save{margin:12px 0;padding:10px;background:#f8fafc;border-radius:12px;border:1px solid var(--border)}
.irp-preset-details summary{cursor:pointer;font-weight:600;font-size:13px;color:var(--accent);list-style:none;user-select:none}
.irp-preset-details summary::-webkit-details-marker{display:none}
.irp-preset-form{display:flex;gap:6px;margin-top:8px}
.irp-preset-form input{flex:1;padding:6px 10px;border:1px solid var(--border);border-radius:8px;font-size:12px}
.irp-preset-list{margin-top:8px;display:flex;flex-direction:column;gap:4px}
.irp-preset-item{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;background:#fff;border:1px solid var(--border);border-radius:8px;font-size:12px}
.irp-preset-item-name{font-weight:500;color:var(--fg);cursor:pointer;flex:1}
.irp-preset-item-name:hover{color:var(--accent)}
.irp-preset-item-del{color:var(--error);cursor:pointer;font-size:16px;line-height:1;padding:0 4px}
.irp-preset-item-del:hover{opacity:0.7}
/* Phase 3: Advanced Editing */
.irp-advanced-section{margin:10px 0;border:1px solid var(--border);border-radius:10px;padding:8px 12px;background:#f8fafc}
.irp-advanced-section summary{cursor:pointer;font-weight:600;font-size:13px;color:var(--fg);list-style:none;user-select:none}
.irp-advanced-section summary::-webkit-details-marker{display:none}
.irp-advanced-content{margin-top:10px}
.irp-control-row{margin:8px 0}
.irp-control-row label{display:flex;flex-direction:column;gap:6px;font-size:12px}
.irp-control-row input[type="range"]{width:100%;min-width:80px}
.irp-number-control{display:flex;align-items:center;gap:4px}
.irp-number-control input[type="number"]{width:60px;padding:4px 6px;border:1px solid var(--border);border-radius:6px;font-size:12px;text-align:center}
.irp-number-control input[type="number"]:focus{outline:none;border-color:var(--accent)}
.irp-number-control span{font-size:11px;color:var(--muted);min-width:30px}
.irp-btn-tiny{padding:2px 8px;border:1px solid var(--border);border-radius:4px;background:#fff;color:var(--fg);cursor:pointer;font-size:14px;font-weight:bold;line-height:1;transition:all .2s}
.irp-btn-tiny:hover{border-color:var(--accent);background:var(--accent);color:#fff}
.irp-btn-tiny:active{transform:scale(0.95)}
/* Crop functionality */
.irp-crop-controls,.irp-wm-controls,.irp-filter-controls{padding-top:8px}
.irp-crop-aspect{margin:8px 0}
.irp-crop-aspect label{display:block;font-size:12px;margin-bottom:4px}
.irp-crop-aspect select{width:100%;padding:6px;border:1px solid var(--border);border-radius:8px;font-size:12px}
.irp-crop-overlay{position:absolute;top:0;left:0;right:0;bottom:0;border:2px dashed var(--accent);background:rgba(14,165,233,0.1);cursor:move;pointer-events:none}
.irp-crop-overlay.active{pointer-events:all}
.irp-crop-handle{position:absolute;width:12px;height:12px;background:#fff;border:2px solid var(--accent);border-radius:50%;transform:translate(-50%,-50%)}
.irp-crop-handle.nw{top:0;left:0;cursor:nw-resize}
.irp-crop-handle.ne{top:0;right:0;cursor:ne-resize;transform:translate(50%,-50%)}
.irp-crop-handle.sw{bottom:0;left:0;cursor:sw-resize;transform:translate(-50%,50%)}
.irp-crop-handle.se{bottom:0;right:0;cursor:se-resize;transform:translate(50%,50%)}
.irp-crop-grid{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none}
.irp-crop-grid-line{position:absolute;background:rgba(255,255,255,0.5)}
.irp-crop-grid-line.h{height:1px;left:0;right:0}
.irp-crop-grid-line.v{width:1px;top:0;bottom:0}
/* Watermark */
.irp-wm-controls label{display:block;margin:8px 0;font-size:12px}
.irp-wm-controls input[type="text"],.irp-wm-controls select{width:100%;padding:6px 10px;border:1px solid var(--border);border-radius:8px;font-size:12px}
/* Filter presets */
.irp-filter-presets{display:flex;gap:4px;margin-top:10px;flex-wrap:wrap}
.irp-filter-presets .irp-btn--sm{font-size:11px;padding:4px 8px}

/* Phase 4: Compression Level Buttons */
.irp-compression-buttons{display:flex;gap:8px;margin:8px 0}
.irp-compression-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 8px;border:2px solid var(--border);border-radius:10px;background:#fff;color:var(--fg);cursor:pointer;transition:all .2s;font-size:12px;font-weight:500}
.irp-compression-btn svg{width:20px;height:20px;stroke:var(--muted)}
.irp-compression-btn:hover{border-color:var(--accent);background:#f0f9ff}
.irp-compression-btn:hover svg{stroke:var(--accent)}
.irp-compression-btn.is-active{border-color:var(--accent);background:var(--accent);color:#fff}
.irp-compression-btn.is-active svg{stroke:#fff}
.irp-compression-btn.is-disabled{opacity:0.4;cursor:not-allowed;pointer-events:none}
#irp-compression-wrap.is-disabled{opacity:0.5;pointer-events:none}
#irp-compression-wrap.is-disabled .irp-hint{color:var(--error)}