:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-text: #1c2024;
  --color-muted: #6b7280;
  --color-border: #e2e4e9;
  --color-accent: #2563eb;
  --color-accent-contrast: #ffffff;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-ok: #16a34a;
  --color-ok-bg: #f0fdf4;
  --color-warning: #f59e0b;
  --radius: 10px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
[x-cloak] { display: none !important; }

.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 20px;
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topnav__brand { font-weight: 600; white-space: nowrap; }
.topnav__tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topnav__tab { padding: 8px 12px; border-radius: var(--radius); color: var(--color-muted); white-space: nowrap; font-size: 14px; }
.topnav__tab:hover { background: var(--color-bg); }
.topnav__right { display: flex; align-items: center; gap: 12px; white-space: nowrap; }

.page { max-width: 1080px; margin: 0 auto; padding: 24px 20px 64px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 16px 0 8px; }
.muted { color: var(--color-muted); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.form { display: flex; flex-direction: column; gap: 12px; max-width: 480px; }
.form--inline { max-width: none; flex-direction: row; flex-wrap: wrap; align-items: flex-end; }
.form__actions { display: flex; gap: 8px; flex-wrap: wrap; }

.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--color-muted); }

.form input, .form select {
  font: inherit;
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) - 4px);
  background: var(--color-surface);
  color: var(--color-text);
}

.form input:focus, .form select:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; }

.btn {
  font: inherit;
  padding: 9px 16px;
  border-radius: calc(var(--radius) - 4px);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}
.btn:hover { background: var(--color-bg); }
.btn--primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-contrast); }
.btn--primary:hover { filter: brightness(1.05); }
.btn--small { padding: 5px 10px; font-size: 13px; }

.form-error { background: var(--color-error-bg); color: var(--color-error); padding: 10px 12px; border-radius: calc(var(--radius) - 4px); font-size: 14px; }
.form-success { background: var(--color-ok-bg); color: var(--color-ok); padding: 10px 12px; border-radius: calc(var(--radius) - 4px); font-size: 14px; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--color-border); white-space: nowrap; }

.inline-form { display: inline; margin: 0; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.kv dt { color: var(--color-muted); }
.kv dd { margin: 0; }

.auth-card {
  max-width: 360px;
  margin: 10vh auto 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

.badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-ok-bg);
  color: var(--color-ok);
  margin-left: 6px;
  white-space: nowrap;
}

.cost-cell { position: relative; }
.cost-value { cursor: pointer; border-bottom: 1px dashed var(--color-muted); }
.cost-edit-form { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.cost-edit-form input[type="text"] { width: 100px; font: inherit; padding: 6px 8px; border: 1px solid var(--color-border); border-radius: calc(var(--radius) - 4px); }

@media (max-width: 640px) {
  .topnav { gap: 12px; padding: 0 12px; }
  .topnav__brand { display: none; }
  .page { padding: 16px 12px 48px; }
  .form--inline { flex-direction: column; align-items: stretch; }
}