:root {
  color-scheme: light;
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

.topbar h1 {
  margin: 0;
  font-size: 22px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.container {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.package-list,
.admin-list {
  display: grid;
  gap: 14px;
}

.package-card,
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.package-card {
  padding: 18px;
}

.package-card h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.package-meta {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 10px;
}

.package-description {
  margin: 0 0 14px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.package-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.panel {
  padding: 20px;
  margin-bottom: 20px;
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 18px;
}

.stack {
  display: grid;
  gap: 12px;
}

.stack label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  font-size: 14px;
}

input,
textarea {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
}

input:focus,
textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
}

.button.primary {
  background: var(--primary);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  background: #ffffff;
  border-color: var(--border);
  color: var(--text);
}

.button.danger {
  background: #ffffff;
  border-color: #fecaca;
  color: var(--danger);
}

.text-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.text-link:hover {
  text-decoration: underline;
}

.admin-row {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
}

.admin-row:last-child {
  margin-bottom: 0;
}

.admin-row-grid {
  display: grid;
  gap: 8px;
}

.admin-row-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.muted,
.hint {
  color: var(--muted);
  font-size: 14px;
}

.empty {
  padding: 32px;
  text-align: center;
  color: var(--muted);
}

.error {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fef2f2;
  color: var(--danger);
}

.message {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #f0fdf4;
  color: #15803d;
}

.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.gate-card {
  width: 100%;
  max-width: 380px;
  display: grid;
  gap: 14px;
  margin-bottom: 0;
}

.gate-card h1 {
  margin: 0;
  font-size: 20px;
}

.button-link {
  background: none;
  border: none;
  padding: 0;
  font-size: 15px;
  font-family: inherit;
}

@media (max-width: 600px) {
  .topbar {
    padding: 14px 16px;
  }

  .package-card,
  .panel {
    padding: 16px;
  }
}