:root{
  --bg: #f5f5f5;
  --card: #ffffff;
  --card-2: #fafafa;
  --muted: #f9fafb;
  --border: #e5e7eb;
  --border-2: #d1d5db;
  --text: #111827;
  --text-2: #374151;
  --text-3: #4b5563;
  --text-4: #6b7280;

  --primary: #2563eb;
  --primary-2: #1d4ed8;

  --danger: #f97373;
  --danger-2: #ef4444;

  --shadow: rgba(0,0,0,0.06);
}

:root[data-theme="dark"]{
  --bg: #0b0f17;
  --card: #0f1623;
  --card-2: #0f1623;
  --muted: #111a2a;
  --border: rgba(255,255,255,0.10);
  --border-2: rgba(255,255,255,0.16);
  --text: #e5e7eb;
  --text-2: #d1d5db;
  --text-3: #cbd5e1;
  --text-4: #94a3b8;

  --primary: #3b82f6;
  --primary-2: #2563eb;

  --danger: #fb7185;
  --danger-2: #f43f5e;

  --shadow: rgba(0,0,0,0.40);
}

*{ box-sizing:border-box; }

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  background: var(--card);
  border-radius: 12px;
  padding: 14px 18px 18px;
  box-shadow: 0 4px 12px var(--shadow);
  border: 1px solid var(--border);
}

h1 { font-size: 20px; margin: 0 0 6px; }

.subtitle {
  font-size: 12px;
  color: var(--text-4);
  margin-bottom: 10px;
}

.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 10px;
  background: var(--muted);
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 8px;
  font-size: 12px;
}

.toolbar span { font-size: 12px; color: var(--text-3); margin-right: 6px; }

button {
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: var(--muted);
  cursor: pointer;
  font-size: 12px;
  color: var(--text);
}

button:hover { filter: brightness(0.97); }

button.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary-2);
}
button.primary:hover { background: var(--primary-2); }

button.danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger-2);
}
button.danger:hover { background: var(--danger-2); }

button.ghost { padding: 5px 10px; }

.rows-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.row-tab {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: var(--muted);
  cursor: pointer;
}
.row-tab:hover { filter: brightness(0.97); }

.row-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary-2);
}

.row-card {
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 8px 10px;
  background: var(--card-2);
  margin-bottom: 8px;
}

.row-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.row-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}

.row-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 4px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.field label { font-size: 11px; color: var(--text-3); }

.field input[type="text"] {
  padding: 5px 7px;
  border-radius: 6px;
  border: 1px solid var(--border-2);
  font-size: 12px;
  min-width: 160px;
  background: var(--card);
  color: var(--text);
}

textarea.msg-input, #outputText {
  width: 100%;
  resize: vertical;
  padding: 6px;
  border-radius: 7px;
  border: 1px solid var(--border-2);
  font-size: 12px;
  font-family: Consolas, "JetBrains Mono", monospace;
  background: var(--card);
  color: var(--text);
}

textarea.msg-input { min-height: 70px; }
#outputText { min-height: 110px; }

.bottom-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 4px;
  align-items: center;
}

.output-block {
  margin-top: 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 8px 10px;
  background: var(--muted);
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.output-header label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}

.small { font-size: 11px; color: var(--text-4); }

@media (max-width: 800px) {
  .row-fields { flex-direction: column; align-items: stretch; }
}

code {
  padding: 0 4px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(127,127,127,0.10);
}