:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #dfe3e8;
  --text: #1f2430;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warn: #d97706;
  --radius: 8px;
}

* { box-sizing: border-box; }

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

.container {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 16px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar h1 { font-size: 18px; margin: 0; }
.topbar-right { display: flex; align-items: center; gap: 12px; font-size: 14px; }
.plain-link { color: var(--text); text-decoration: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

h2 { margin-top: 0; }

.badge {
  background: #eef2ff;
  color: #3730a3;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.toolbar input[type="text"] {
  flex: 1;
  min-width: 200px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

button, .btn-small, .btn-secondary {
  cursor: pointer;
  font-size: 14px;
}

button {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-weight: 600;
}
button:hover { background: var(--primary-dark); }
button:disabled { background: #9ca3af; cursor: not-allowed; }

button.link-btn {
  background: transparent;
  color: var(--danger);
  padding: 0;
  font-weight: 500;
  text-decoration: underline;
}

.btn-small {
  display: inline-block;
  padding: 5px 10px;
  background: #eef2ff;
  color: #3730a3;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  border: none;
}

.btn-secondary {
  display: inline-block;
  padding: 9px 16px;
  border-radius: var(--radius);
  background: #f3f4f6;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.domain-name { font-weight: 600; }
.empty-row { text-align: center; color: var(--muted); padding: 24px; }

.status { padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.status-ready { background: #dcfce7; color: #166534; }
.status-error { background: #fee2e2; color: #991b1b; }

textarea, .code-editor {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

.position-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 12px 0;
}
.position-fieldset label {
  display: block;
  margin: 6px 0;
  font-size: 14px;
}
.position-fieldset input[type="text"] {
  margin-left: 8px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 260px;
}

.button-row { display: flex; gap: 10px; margin-top: 12px; }

.preview-box, .result-box {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: #fafbfc;
  font-size: 14px;
}
.hidden { display: none; }

.preview-domain-list { margin: 8px 0; padding-left: 20px; }

.result-table { width: 100%; margin-top: 8px; }
.result-updated { color: var(--success); font-weight: 700; }
.result-skipped { color: var(--warn); font-weight: 700; }
.result-error { color: var(--danger); font-weight: 700; }

.result-summary { font-weight: 600; margin-top: 10px; }

.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: 14px;
}
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-success { background: #dcfce7; color: #166534; }

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

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.auth-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 320px;
}
.auth-box h1 { font-size: 18px; margin-top: 0; }
.auth-box label { display: block; margin-bottom: 12px; font-size: 14px; }
.auth-box input { width: 100%; padding: 8px 10px; margin-top: 4px; border: 1px solid var(--border); border-radius: var(--radius); }
.auth-box button { width: 100%; margin-top: 8px; }

.backup-table td, .backup-table th { font-size: 13px; }