styles.css

:root {
  --bg: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-border: rgba(255, 255, 255, 0.10);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.62);
  --brand: #7c5cff;
  --brand-2: #22c55e;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% 0%, rgba(124, 92, 255, 0.25), transparent 60%),
    radial-gradient(900px 600px at 80% 20%, rgba(34, 197, 94, 0.18), transparent 55%),
    var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 18px 40px;
}

.header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.title {
  margin: 0 0 6px;
  font-size: 28px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  appearance: none;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.10);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  border-color: rgba(124, 92, 255, 0.45);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.9), rgba(124, 92, 255, 0.55));
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.98), rgba(124, 92, 255, 0.62));
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.panel {
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: 14px;
  overflow: hidden;
  min-height: 520px;
  display: flex;
  flex-direction: column;
}

.panel-head {
  padding: 14px 14px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.panel-head h2 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.2px;
}

.small {
  color: var(--muted);
  font-size: 12px;
}

.status {
  font-size: 12px;
  color: var(--muted);
  min-height: 1.2em;
  text-align: right;
}

.textarea {
  width: 100%;
  flex: 1;
  resize: none;
  padding: 14px;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
}

.hint {
  padding: 10px 14px 14px;
  color: var(--muted);
  font-size: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
}

.preview {
  flex: 1;
  padding: 14px 16px 18px;
  overflow: auto;
}

.preview :first-child {
  margin-top: 0;
}

.preview h1,
.preview h2,
.preview h3 {
  margin: 14px 0 10px;
}

.preview p {
  margin: 10px 0;
}

.preview a {
  color: rgba(124, 92, 255, 0.95);
}

.preview pre {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 10px 12px;
  border-radius: 10px;
  overflow: auto;
}

.preview code {
  background: rgba(0, 0, 0, 0.25);
  padding: 1px 5px;
  border-radius: 6px;
}

.preview pre code {
  background: transparent;
  padding: 0;
}

.preview blockquote {
  margin: 12px 0;
  padding: 8px 12px;
  border-left: 3px solid rgba(124, 92, 255, 0.7);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.82);
}

.preview table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
}

.preview th,
.preview td {
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 8px 10px;
  vertical-align: top;
}

.preview th {
  background: rgba(255, 255, 255, 0.06);
}