:root{--bg:#16171d;--sidebar:#1e2029;--panel:#2a2d3a;--panel-border:#3a3e4d;--text:#e8e9ef;--muted:#9aa0b4;--accent:#6c8cff;--accent-text:#ffffff;--error-bg:#4a1f28;--error-border:#a24858;--error-text:#ffd7dd;--sidebar-w:340px}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;overflow:hidden}.layout{display:flex;height:100%}.sidebar{flex:0 0 var(--sidebar-w);width:var(--sidebar-w);display:flex;flex-direction:column;min-height:0;background:var(--sidebar);border-right:1px solid var(--panel-border)}.sidebar-head{padding:16px 20px;border-bottom:1px solid var(--panel-border)}.sidebar-head h1{font-size:1.15rem;margin:0}.sidebar-body{flex:1 1 auto;min-height:0;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:20px}.sidebar-foot{flex:0 0 auto;padding:16px 20px;border-top:1px solid var(--panel-border);background:var(--sidebar)}.stage{position:relative;flex:1 1 auto;min-width:0;display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden;background:var(--bg)}.stage.dragover::after{content:"Drop pad image to upload";position:absolute;inset:16px;display:flex;align-items:center;justify-content:center;border:2px dashed var(--accent);border-radius:14px;background:rgba(108,140,255,.14);color:var(--text);font-size:1.15rem;font-weight:600;pointer-events:none}.preview{max-width:100%;max-height:100%;background-image:linear-gradient(45deg,#2a2d3a 25%,transparent 25%),linear-gradient(-45deg,#2a2d3a 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#2a2d3a 75%),linear-gradient(-45deg,transparent 75%,#2a2d3a 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0;box-shadow:0 8px 40px rgba(0,0,0,.4)}h2{font-size:.75rem;margin:0 0 10px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.group{flex:0 0 auto}.group-stickers{flex:1 1 auto;min-height:0;display:flex;flex-direction:column}.status{color:var(--muted);margin:8px 0 0;font-size:.85rem}.error{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error-text);border-radius:8px;padding:10px 12px;font-size:.9rem}.base-toggle{display:flex;flex-direction:column;gap:8px}.toggle-btn{padding:10px 12px;border:1px solid var(--panel-border);background:#23252f;color:var(--text);border-radius:8px;font-size:.9rem;cursor:pointer;text-align:left}.toggle-btn:hover{border-color:var(--accent)}.toggle-btn.active{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.sticker-list{display:flex;flex-wrap:wrap;align-content:flex-start;gap:8px;overflow-y:auto;min-height:0}.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 13px;border:1px solid var(--panel-border);border-radius:999px;background:#23252f;color:var(--text);font-size:.9rem;line-height:1;cursor:pointer;user-select:none}.chip::before{content:"+";font-weight:700;font-size:1rem;color:var(--muted)}.chip:hover{border-color:var(--accent)}.chip[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.chip[aria-pressed=true]::before{content:"✓";color:var(--accent-text)}.field{display:block}.field>span:first-child{display:block;font-size:.8rem;color:var(--muted);margin-bottom:6px}.field-row{display:flex;align-items:center;gap:6px}#filename{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--panel-border);background:#23252f;color:var(--text);border-radius:8px;font-size:.95rem}.ext{color:var(--muted)}.foot-actions{display:flex;gap:8px;margin-top:12px}.secondary-btn{flex:0 0 auto;padding:12px 16px;border:1px solid var(--panel-border);border-radius:8px;background:#23252f;color:var(--text);font-size:1rem;cursor:pointer}.secondary-btn:hover{border-color:var(--accent)}.export-btn{flex:1 1 auto;padding:12px;border:none;border-radius:8px;background:var(--accent);color:var(--accent-text);font-size:1rem;font-weight:600;cursor:pointer}.export-btn:disabled{background:#3a3e4d;color:var(--muted);cursor:not-allowed}@media (max-width:640px){body{overflow:auto}.layout{flex-direction:column;height:auto;min-height:100%}.sidebar{flex:0 0 auto;width:100%;border-right:none;border-bottom:1px solid var(--panel-border)}.sidebar-body{overflow:visible}.sticker-list{overflow:visible}.stage{min-height:60vh}}