:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #24324a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #00d084;
  --accent-2: #14b8a6;
  --border: #334155;
  --danger: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  font-size: 28px;
  color: var(--accent);
}
h1 { margin: 0; font-size: 20px; font-weight: 650; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.health { font-size: 13px; color: var(--muted); padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); }
.health.ok { color: var(--accent); border-color: var(--accent); }
.health.bad { color: var(--danger); border-color: var(--danger); }

main { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; display: flex; flex-direction: column; gap: 22px; }

.mode-bar { display: flex; gap: 12px; }
.mode-btn {
  flex: 1;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  transition: all .15s;
}
.mode-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04231a;
  border-color: transparent;
}
.mode-btn:not(.active):hover { border-color: var(--accent); color: var(--text); }

.hint { margin: 0 0 14px; font-size: 13px; color: var(--muted); line-height: 1.5; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.panel h2 { margin: 0 0 14px; font-size: 15px; font-weight: 600; color: var(--accent-2); text-transform: uppercase; letter-spacing: .03em; }

textarea {
  width: 100%;
  min-height: 180px;
  background: #0b1220;
  color: #d8f3e8;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  resize: vertical;
}

.row { display: flex; gap: 16px; margin-top: 16px; flex-wrap: wrap; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.field.grow { flex: 1 1 200px; }
select, input[type="number"], input[type="file"] {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  min-width: 160px;
}
input[type="file"] { min-width: 240px; }

button.primary, a.primary {
  display: inline-block;
  margin-top: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04231a;
  border: none;
  border-radius: 9px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
  transition: filter .15s, transform .05s;
}
button.primary:hover, a.primary:hover { filter: brightness(1.08); }
button.primary:active { transform: translateY(1px); }
button.primary:disabled { opacity: .5; cursor: not-allowed; }
button.ghost { background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 8px; padding: 4px 10px; cursor: pointer; }

.ref-preview { display: flex; align-items: center; gap: 10px; margin-top: 12px; font-size: 13px; color: var(--muted); }
.ref-preview img { height: 56px; border-radius: 8px; border: 1px solid var(--border); }
.hidden { display: none !important; }

.status { color: var(--muted); font-size: 14px; }
.status.busy { color: var(--accent-2); }
.status.error { color: var(--danger); }

.result { display: flex; gap: 22px; flex-wrap: wrap; }
#result-img { max-width: 480px; width: 100%; border-radius: 12px; border: 1px solid var(--border); }
.meta { flex: 1 1 260px; display: flex; flex-direction: column; gap: 10px; }
.meta-row { font-size: 13px; color: var(--muted); }
.meta-row pre { white-space: pre-wrap; margin: 4px 0 0; padding: 10px; background: #0b1220; border-radius: 8px; font-size: 12px; color: #cbd5e1; }

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px; border: 1px solid var(--border); cursor: pointer; transition: transform .1s; }
.gallery img:hover { transform: scale(1.03); }
.gallery .empty { color: var(--muted); font-size: 13px; grid-column: 1 / -1; }

@media (max-width: 640px) {
  main { padding: 16px 12px; }
  header { flex-direction: column; gap: 10px; align-items: flex-start; }
}