/* THEME TOKENS — swap these to match your site */
:root{
  --bg: #0d0d0d;          /* page background */
  --text: #eaeaea;        /* body text */
  --muted: #bdbdbd;       /* secondary text */
  --card: #151515;        /* card/background surfaces */
  --border: #262626;      /* borders */
  --brand: #d4a373;       /* accent/brand */
  --brand-ghost: rgba(212,163,115,.15);
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0,0,0,.3);
  --maxw: 960px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 20% -10%, #1b1b1b, transparent 60%),
              radial-gradient(1000px 500px at 120% 10%, #1a1410, transparent 55%),
              var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
}

.shell { max-width: var(--maxw); padding: 32px 16px 56px; margin: 0 auto; }

.header { margin-bottom: 16px; }
.title { margin: 0; font-size: clamp(26px, 3vw, 34px); letter-spacing: .2px; }
.subtitle { margin: 6px 0 0; color: var(--muted); font-size: 14px; }

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0)) , var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

/* Upload */
.dropzone{
  border: 1.5px dashed var(--border);
  border-radius: calc(var(--radius) - 4px);
  padding: 22px;
  background: linear-gradient(0deg, var(--brand-ghost), var(--brand-ghost)) top/0 0 no-repeat;
  transition: background-size .25s ease, border-color .25s ease;
  text-align: center;
}
.dropzone.dragover{
  border-color: var(--brand);
  background-size: 100% 100%;
}
.dz-inner{ display: grid; place-items: center; gap: 10px; }
.icon{ opacity: .9; }
.hint{ margin-left: 10px; color: var(--muted); font-size: 13px; }
.note{ color: var(--muted); font-size: 12px; }

.visually-hidden{ position: absolute; width: 1px; height: 1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }

/* Controls */
.controls{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 16px 0 8px;
}
.ctrl{
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--muted);
}
.ctrl input[type="range"]{ width: 100%; }
.mono{ font-variant-numeric: tabular-nums; color: var(--text); }

/* Preview */
.preview-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 14px;
}
.h3{ margin: 0 0 8px; font-size: 14px; color: var(--muted); font-weight: 600; }
.preview-box{
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0f0f0f;
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.preview-box img{ max-width: 100%; max-height: 100%; object-fit: contain; }
.meta{ color: var(--muted); font-size: 12px; margin-top: 6px; min-height: 1.2em; }

/* Actions */
.actions{
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 10px;
  margin-top: 16px;
}
.input{
  border: 1px solid var(--border);
  background: #0f0f0f;
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  outline: none;
}
.input::placeholder{ color: #8a8a8a; }

.btn{
  appearance: none; border: 1px solid var(--border);
  background: #101010; color: var(--text);
  padding: 10px 14px; border-radius: 999px; cursor: pointer;
  font-weight: 600; transition: border-color .2s ease, transform .02s;
}
.btn:active{ transform: translateY(1px); }
.btn.primary{ background: linear-gradient(180deg, var(--brand), #b6865e); border-color: #000; color: #1a120a; }
.btn.outline{ border-color: var(--brand); }
.btn.ghost{ background: transparent; }

.footer{ margin-top: 18px; color: var(--muted); font-size: 12px; text-align: center; }

/* Responsive */
@media (max-width: 860px){
  .controls{ grid-template-columns: 1fr; }
  .ctrl{ grid-template-columns: 140px 1fr auto; }
  .preview-grid{ grid-template-columns: 1fr; }
  .actions{ grid-template-columns: 1fr 1fr; }
}