@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --paper: #f1efe9;
  --ink: #202321;
  --muted: #777973;
  --line: #d7d4ca;
  --acid: #c5e86c;
  --acid-dark: #789b22;
  --white: #faf9f5;
  --error: #a74735;
  --mono: 'DM Mono', monospace;
  --sans: 'Space Grotesk', sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font-family: var(--sans); }
button, input { font: inherit; }
button, label { -webkit-tap-highlight-color: transparent; }
.page-shell { width: min(1220px, calc(100% - 48px)); min-height: 100vh; margin: 0 auto; padding: 48px 0 25px; display: flex; flex-direction: column; }
.site-header { border-bottom: 1px solid var(--line); padding-bottom: 30px; }
h1 { font-size: clamp(54px, 9vw, 122px); line-height: .82; letter-spacing: -.08em; margin: 0; font-weight: 600; }
h1 em { color: var(--acid-dark); font-style: normal; }
.intro { margin: 27px 0 0; color: var(--muted); font-size: 17px; }
.workspace { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(320px, .85fr); gap: 34px; padding: 34px 0 46px; flex: 1; }
.preview-panel, .controls-panel, .result-panel { min-width: 0; }
.panel-label, .preview-footer, .site-footer { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.panel-label { margin-bottom: 10px; }
.preview-frame, .result-frame { position: relative; aspect-ratio: 4 / 3; overflow: hidden; display: grid; place-items: center; background-color: #dddacf; background-image: linear-gradient(45deg, #d4d1c7 25%, transparent 25%), linear-gradient(-45deg, #d4d1c7 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #d4d1c7 75%), linear-gradient(-45deg, transparent 75%, #d4d1c7 75%); background-size: 28px 28px; background-position: 0 0, 0 14px, 14px -14px, -14px 0; }
.preview-frame img { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: contain; display: block; }
.preview-frame img[hidden] { display: none; }
.result-frame img { width: 100%; height: 100%; object-fit: contain; display: block; }
.empty-state { text-align: center; color: var(--muted); }
.empty-mark { display: block; margin-bottom: 12px; color: var(--acid-dark); font-size: 40px; font-weight: 300; line-height: 1; }
.empty-state p { margin: 0 0 7px; font-size: 15px; color: var(--ink); }
.empty-state small { font: 10px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.browse-btn { color: var(--acid-dark); text-decoration: underline; }
.preview-footer { padding-top: 11px; font-size: 10px; }
#modelStatus { text-align: right; }
.controls-panel { border-left: 1px solid var(--line); padding-left: 34px; display: flex; flex-direction: column; }
.control-group { padding: 2px 0 28px; border-bottom: 1px solid var(--line); }
.control-kicker { margin: 0 0 9px; color: var(--acid-dark); font: 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
h2 { font-size: 21px; line-height: 1; letter-spacing: -.04em; margin: 0; font-weight: 600; }
.action-button { display: flex; align-items: center; justify-content: space-between; width: 100%; margin-top: 22px; padding: 15px 16px; border: 1px solid var(--ink); background: var(--acid); color: var(--ink); cursor: pointer; text-decoration: none; font-weight: 600; transition: background .15s, color .15s, transform .15s; }
.action-button:hover:not(:disabled) { background: #d1f282; transform: translate(-2px, -2px); }
.action-button:focus-visible { outline: 3px solid var(--acid-dark); outline-offset: 3px; }
.action-button:disabled { cursor: not-allowed; opacity: .35; }
.action-button-dark { background: var(--ink); color: var(--white); }
.action-button-dark:hover { background: var(--acid); color: var(--ink); }
.button-arrow { font-size: 21px; line-height: .7; }
.hint { margin: 20px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.result-panel { grid-column: 1 / -1; }
.result-frame { aspect-ratio: 16 / 9; }
.result-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.result-actions .action-button { margin-top: 14px; }
.error { margin-top: 15px; padding: 12px; border-left: 3px solid var(--error); color: var(--error); font: 12px var(--mono); }
.hidden { display: none !important; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--line); border-radius: 50%; border-top-color: var(--ink); animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.site-footer { padding-top: 16px; border-top: 1px solid var(--line); font-size: 9px; }
@media (max-width: 760px) { .page-shell { width: min(100% - 30px, 560px); padding-top: 29px; } .workspace { grid-template-columns: 1fr; gap: 36px; padding-top: 25px; } .controls-panel { border-left: 0; border-top: 1px solid var(--line); padding: 30px 0 0; } .preview-frame, .result-frame { aspect-ratio: 1 / 1; } .result-panel { grid-column: auto; } }
@media (max-width: 420px) { h1 { font-size: 60px; } .intro { font-size: 15px; } .preview-footer { display: block; line-height: 1.8; } #modelStatus { text-align: left; } .result-actions { grid-template-columns: 1fr; } }