:root{--bg: #171a1f;--panel: #242932;--panel-2: #2d333d;--line: #3b424e;--text: #e8edf2;--muted: #aab3bf;--accent: #4da3ff;--success: #77c56b;--danger: #d96c6c}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg);color:var(--text);font-family:Segoe UI,Yu Gothic UI,Meiryo,sans-serif;overscroll-behavior:none}button,input{font:inherit}img{max-width:100%}.app{display:grid;grid-template-rows:auto minmax(0,1fr);width:100vw;min-height:100vh}.header{display:flex;align-items:center;min-height:58px;padding:14px 20px;border-bottom:1px solid var(--line);background:var(--panel)}.eyebrow{margin:0 0 3px;color:var(--muted);font-size:12px;font-weight:600;letter-spacing:0}h1{margin:0;font-size:18px;line-height:1.25}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 320px;min-height:0;background:linear-gradient(45deg,#1d2128 25%,transparent 25%),linear-gradient(-45deg,#1d2128 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1d2128 75%),linear-gradient(-45deg,transparent 75%,#1d2128 75%);background-color:#16191f;background-size:32px 32px;background-position:0 0,0 16px,16px -16px,-16px 0}.panel{background:var(--panel)}.controls{order:2;display:grid;align-content:start;gap:16px;height:100%;overflow:auto;padding:20px;border-left:1px solid var(--line)}.uploadBox{display:grid;gap:8px;padding:14px;border:1px dashed #4b5563;border-radius:6px;background:#1b2027;cursor:pointer}.uploadBox:hover,.customUpload:hover{border-color:var(--accent);background:#202733}.uploadBox input{width:100%;color:var(--muted);font-size:13px}.labelTitle{color:var(--text);font-size:13px;font-weight:700}.labelText{min-height:20px;color:var(--muted);font-size:13px;overflow-wrap:anywhere}.logoSection{display:grid;gap:10px;padding-top:16px;border-top:1px solid var(--line)}.logoChoices{display:grid;gap:8px}.logoChoice{display:grid;grid-template-columns:18px 52px 1fr;align-items:center;gap:10px;min-height:62px;padding:8px 10px;border:1px solid #49515e;border-radius:6px;background:var(--panel-2);cursor:pointer}.logoChoice:hover{background:#38404b}.logoChoice:has(input:checked){border-color:var(--success);background:#455f37;box-shadow:inset 0 0 0 1px var(--success)}.logoChoice input{width:16px;height:16px;margin:0}.logoChoice img,.customPreview{width:52px;height:46px;object-fit:contain;border-radius:6px;background:#1b2027}.logoChoice span:last-child{font-size:13px;font-weight:700}.customChoice:has(input:disabled){color:#737c89;cursor:default;opacity:.8}.customPreview{display:grid;place-items:center;color:var(--muted);font-size:21px;font-weight:700}.customUpload{display:grid;gap:8px;padding:12px;border:1px dashed #4b5563;border-radius:6px;background:#1b2027;cursor:pointer}.customUpload span{font-size:13px;font-weight:700}.customUpload input{width:100%;color:var(--muted);font-size:13px}.logoFileName{margin:-2px 0 0;color:var(--muted);font-size:12px;overflow-wrap:anywhere}.primaryButton,.secondaryButton{min-height:40px;padding:8px 12px;border:1px solid #49515e;border-radius:6px;color:var(--text);font-weight:700;cursor:pointer}.primaryButton{background:#226fc3;border-color:#3486df}.primaryButton:hover:not(:disabled){background:#2d7ed5}.secondaryButton{background:#34763c;border-color:#4b9554}.secondaryButton:hover:not(:disabled){background:#3f8847}.primaryButton:disabled,.secondaryButton:disabled{color:#737c89;background:var(--panel-2);cursor:not-allowed;opacity:.7}.message{min-height:20px;margin:0;color:var(--muted);font-size:12px;line-height:1.5}.progressBox{display:grid;gap:10px;padding:12px;border:1px solid var(--line);border-radius:6px;background:#1b2027}.progressHeader{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px}.progressHeader strong{color:var(--text);font-size:16px}.progressTrack{overflow:hidden;height:8px;border-radius:999px;background:#11151a}.progressTrack span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--success));transition:width .18s ease}.cancelButton{min-height:38px;padding:8px 12px;border:1px solid #8b4a4d;border-radius:6px;color:var(--text);background:#73393b;font-weight:700;cursor:pointer}.cancelButton:hover{background:#854244}.settings{display:grid;gap:7px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;line-height:1.5}.settings p{margin:0}.previewArea{position:relative;order:1;min-width:0;min-height:0;overflow:auto;padding:24px}.previewArea.isDragging:after{position:fixed;inset:82px 344px 24px 24px;z-index:5;display:grid;place-items:center;border:2px dashed var(--accent);border-radius:8px;background:#11151ac7;color:var(--text);content:"ここに画像をドロップ";font-size:18px;font-weight:700;pointer-events:none}.emptyState{display:grid;place-content:center;min-height:calc(100vh - 106px);padding:32px;border:1px solid #424a55;background:#11151a;text-align:center;box-shadow:0 14px 50px #00000059}.emptyState h2{margin:0 0 8px;font-size:20px}.emptyState p{max-width:420px;margin:0;color:var(--muted);font-size:13px;line-height:1.7}.previewGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.previewCard{overflow:hidden;border:1px solid #424a55;background:#11151a;box-shadow:0 14px 50px #00000047}.previewCard img{display:block;width:100%;aspect-ratio:4 / 3;object-fit:contain;background:#10141a}.previewMeta{display:grid;gap:4px;padding:12px;border-top:1px solid var(--line)}.previewMeta span{font-size:13px;font-weight:700;overflow-wrap:anywhere}.previewMeta small{color:var(--muted)}@media(max-width:760px){.app{min-height:100dvh}.workspace{display:flex;flex-direction:column}.controls{order:1;height:auto;padding:14px;border-left:0;border-bottom:1px solid var(--line)}.previewArea{order:2;padding:12px}.previewArea.isDragging:after{inset:220px 12px 12px}.emptyState{min-height:360px}.primaryButton,.secondaryButton{min-height:42px}}