:root {
  --bg: #050814;
  --bg-soft: #0b1020;
  --accent: #4f46e5;
  --accent-soft: rgba(79, 70, 229, 0.16);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2933;
  --danger: #f97373;
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #111827, #020617);
  color: var(--text);
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.app-header {
  text-align: center;
  padding: 16px 0 8px;
}

.app-header h1 {
  margin: 0 0 8px;
  font-size: 28px;
  letter-spacing: 0.03em;
}

.app-header p {
  margin: 0;
  color: var(--muted);
}

.app-main {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

.panel {
  flex: 1 1 360px;
  background: linear-gradient(145deg, #020617, #020617);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 16px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.8);
}

.panel h2 {
  margin-top: 0;
  font-size: 18px;
}

label {
  display: block;
  margin-top: 12px;
  margin-bottom: 4px;
  font-size: 13px;
  color: var(--muted);
}

textarea,
select,
input[type="number"],
input[type="file"] {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #020617;
  color: var(--text);
  font-size: 14px;
}

textarea:focus,
select:focus,
input[type="number"]:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

button {
  margin-top: 14px;
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  background: linear-gradient(120deg, #4f46e5, #7c3aed);
  color: white;
  font-weight: 500;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.result-box {
  margin-top: 14px;
  min-height: 180px;
  border-radius: 10px;
  border: 1px dashed var(--border);
  background: radial-gradient(circle at top left, rgba(79, 70, 229, 0.08), #020617);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  position: relative;
}

.result-box img,
.result-box video {
  max-width: 100%;
  max-height: 260px;
  border-radius: 10px;
  display: block;
}

.placeholder {
  color: var(--muted);
  font-size: 13px;
}

.status {
  position: absolute;
  left: 8px;
  bottom: 8px;
  font-size: 11px;
  color: var(--muted);
}

.status.ok {
  color: var(--success);
}

.status.error {
  color: var(--danger);
}

.panel-docs {
  margin-top: 16px;
}

.panel-docs ol {
  padding-left: 20px;
  font-size: 14px;
}

.panel-docs a {
  color: #a5b4fc;
}

/* Responsive */
@media (max-width: 768px) {
  .app {
    padding: 12px;
  }
}