:root {
  color-scheme: dark;
  --bg:#0b0b0c; --card:#151517; --card2:#1d1d20; --text:#f6f6f7; --muted:#a7a7ad;
  --line:#2b2b30; --accent:#ffffff; --danger:#ff6b6b; --green:#4bd27d;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;padding-bottom:calc(28px + env(safe-area-inset-bottom))}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:calc(14px + env(safe-area-inset-top)) 16px 12px;background:rgba(11,11,12,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
h1{font-size:19px;margin:0 0 3px}.topbar p{margin:0;color:var(--muted);font-size:11px}
main{max-width:760px;margin:auto;padding:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:15px;margin-bottom:12px;box-shadow:0 6px 24px rgba(0,0,0,.18)}
.intro-card{padding:13px 15px}.privacy-pill{display:inline-block;border:1px solid #2f6241;background:#13271a;color:#9ce5b6;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:700;margin-bottom:8px}.muted{color:var(--muted)}.tiny{font-size:12px;line-height:1.45}.intro-card p{font-size:12px;line-height:1.5;margin:0}
input[type=file]{display:none}.file-button{display:block;text-align:center;background:#f4f4f5;color:#111;padding:14px;border-radius:14px;font-weight:800;font-size:16px}.file-name{text-align:center;color:var(--muted);font-size:12px;margin-top:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
button{border:0;border-radius:13px;padding:12px 13px;font-weight:750;font-size:14px;background:#f2f2f3;color:#111;min-height:44px}button:active{transform:scale(.985)}button.secondary{background:var(--card2);color:var(--text);border:1px solid #33333a}.primary{background:#f5f5f6;color:#111}.small-btn{min-height:34px;padding:7px 11px;font-size:12px}.full{width:100%}.danger{color:#ff9a9a}.ghost{background:transparent;border:1px solid #5d3030}.hidden{display:none!important}
.canvas-wrap{position:relative;width:100%;background:#050505;border-radius:13px;overflow:hidden;touch-action:none;min-height:160px;display:flex;align-items:center;justify-content:center}.canvas-wrap canvas{display:block;max-width:100%;height:auto}.canvas-wrap #maskOverlayCanvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:auto}.preview-actions,.button-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:10px}.section-title{font-size:14px;font-weight:850;margin-bottom:10px}.row-title{display:flex;align-items:center;justify-content:space-between}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}.preset-grid button{background:var(--card2);color:var(--text);border:1px solid #33333a;font-size:13px;padding:13px 8px}.preset-grid button:nth-child(2){background:linear-gradient(135deg,#2b1d28,#39211f);border-color:#55333d}
textarea{width:100%;resize:vertical;background:#0f0f11;border:1px solid #37373d;color:var(--text);border-radius:13px;padding:12px;font:inherit;font-size:14px;outline:none;margin-bottom:9px}textarea:focus{border-color:#73737e}.prompt-summary{font-size:12px;color:#b8d7ff;margin-top:8px;line-height:1.4}.divider{height:1px;background:var(--line);margin:16px 0}.range-label{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:8px 0 5px}input[type=range]{width:100%;accent-color:#fff}.save-row{margin-top:16px}.save-row .primary{font-size:15px}.active-tool{outline:2px solid #fff;outline-offset:-2px}
details{margin-top:11px;background:#101012;border:1px solid var(--line);padding:11px;border-radius:13px}summary{font-size:13px;font-weight:750;cursor:pointer}.switch{position:relative;width:46px;height:27px}.switch input{display:none}.switch span{position:absolute;inset:0;border-radius:999px;background:#45454d}.switch span:before{content:"";position:absolute;width:21px;height:21px;left:3px;top:3px;background:white;border-radius:50%;transition:.2s}.switch input:checked+span{background:#2d9f57}.switch input:checked+span:before{transform:translateX(19px)}
ul{padding-left:20px;color:#d9d9dc;font-size:13px;line-height:1.65;margin-bottom:8px}.toast{position:fixed;left:50%;bottom:calc(22px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(25px);background:#f5f5f6;color:#111;padding:10px 14px;border-radius:999px;font-weight:750;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:90%;text-align:center}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:420px){main{padding:10px}.card{border-radius:16px;padding:13px}.preset-grid{grid-template-columns:1fr 1fr}.preset-grid button{font-size:12px}.topbar{padding-left:12px;padding-right:12px}}
.version{font-size:.45em;opacity:.6;vertical-align:middle}.control-row{margin:12px 0}.control-row b{color:#fff;font-weight:800;min-width:36px;text-align:right}.control-row input[type=range]{height:28px}
.ai-pro-btn{font-size:1.08rem;padding:16px 14px;margin-top:4px;background:linear-gradient(135deg,#fff,#d9d9d9);color:#111;border:0;font-weight:800;box-shadow:0 8px 26px rgba(255,255,255,.08)}
.ai-pro-btn:disabled{opacity:.55}
.ai-status{min-height:1.2em;margin-top:8px}