:root {
  --bg: #f7f8fa;
  --surface: #fff;
  --border: #e3e6eb;
  --text: #1d2330;
  --muted: #6a7280;
  --accent: #0064d2;
  --accent-text: #fff;
  --danger: #c92a2a;
  --warn: #d18000;
  --ok: #0f7a3a;
  --radius: 8px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

header.topbar {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
header.topbar h1 { font-size: 1rem; margin: 0; font-weight: 600; }
header.topbar nav { display: flex; gap: 0.25rem; margin-left: 2rem; }
header.topbar nav a {
  text-decoration: none; color: var(--muted);
  padding: 0.4rem 0.8rem; border-radius: var(--radius);
  font-weight: 500;
}
header.topbar nav a.active { background: var(--bg); color: var(--text); }
header.topbar .spacer { flex: 1; }
header.topbar .user { color: var(--muted); }
header.topbar button.signout {
  background: transparent; border: 1px solid var(--border);
  padding: 0.35rem 0.7rem; border-radius: var(--radius);
  cursor: pointer; color: var(--text);
}

main { flex: 1; padding: 1.25rem; max-width: 1200px; width: 100%; margin: 0 auto; }

.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.page-header h2 { margin: 0; font-size: 1.25rem; }

button.primary {
  background: var(--accent); color: var(--accent-text);
  border: none; padding: 0.55rem 1rem; border-radius: var(--radius);
  cursor: pointer; font-weight: 600;
}
button.primary:hover { filter: brightness(0.95); }
button.secondary {
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); padding: 0.45rem 0.9rem;
  border-radius: var(--radius); cursor: pointer;
}
button.danger {
  background: transparent; color: var(--danger);
  border: 1px solid var(--danger); padding: 0.35rem 0.7rem;
  border-radius: var(--radius); cursor: pointer;
}

table.list {
  width: 100%; border-collapse: collapse;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
table.list th, table.list td {
  text-align: left; padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.list th { background: var(--bg); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; color: var(--muted); }
table.list tr:last-child td { border-bottom: none; }
table.list .actions { text-align: right; white-space: nowrap; }
table.list .actions button { margin-left: 0.4rem; }

.empty { padding: 2rem; text-align: center; color: var(--muted); background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal {
  background: var(--surface); border-radius: var(--radius);
  padding: 1.5rem; max-width: 540px; width: 100%;
  max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin-top: 0; }
.modal .actions { margin-top: 1rem; display: flex; justify-content: flex-end; gap: 0.5rem; }

form.form { display: grid; gap: 0.85rem; }
form.form label { display: grid; gap: 0.25rem; font-size: 0.85rem; color: var(--muted); }
form.form input[type=text], form.form input[type=email], form.form input[type=tel],
form.form input[type=date], form.form input[type=time], form.form input[type=password],
form.form select, form.form textarea {
  font: inherit; padding: 0.55rem 0.7rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text);
}
form.form textarea { min-height: 60px; resize: vertical; }
form.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }
form.form .checkbox { display: flex; gap: 0.4rem; align-items: center; }
form.form .checkbox input { width: auto; }

.login-page {
  max-width: 380px; margin: 8vh auto; background: var(--surface);
  padding: 2rem; border-radius: var(--radius); border: 1px solid var(--border);
}
.login-page h1 { margin-top: 0; font-size: 1.4rem; }
.login-page form { display: grid; gap: 0.85rem; }
.login-page input { font: inherit; padding: 0.6rem; border: 1px solid var(--border); border-radius: var(--radius); }
.login-page .err { color: var(--danger); font-size: 0.85rem; }
.login-page .hint { color: var(--muted); font-size: 0.8rem; }

.loading { padding: 3rem; text-align: center; color: var(--muted); }
.error-banner {
  padding: 0.65rem 0.9rem; background: #fff3f3; border: 1px solid #f3c2c2;
  color: var(--danger); border-radius: var(--radius); margin-bottom: 1rem;
}

.tag { display: inline-block; padding: 1px 7px; border-radius: 3px; font-size: 0.75rem; }
.tag.ok { background: #e6f4ec; color: var(--ok); }
.tag.draft { background: #f0f0f0; color: var(--muted); }
.tag.warn { background: #fff5e6; color: var(--warn); }

.muted { color: var(--muted); }

.route-builder { display: grid; grid-template-columns: 1fr 320px; gap: 1.25rem; }
.route-builder .stops-list, .route-builder .participants-bank {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.75rem;
}
.route-builder ol { list-style: decimal; padding-left: 1.5rem; margin: 0; }
.route-builder li { padding: 0.35rem 0; }
.route-builder .participant-pill {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.4rem 0.6rem; background: var(--bg);
  border-radius: var(--radius); margin-bottom: 0.3rem;
}
.route-builder .participant-pill button { font-size: 0.8rem; }

.checkbox-row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.checkbox-col { display: flex; flex-direction: column; gap: 0.25rem; }
.checkbox.inline { display: inline-flex; align-items: center; gap: 0.25rem; margin: 0; }

.admins-section { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.form.inline { display: flex; gap: 0.5rem; align-items: center; margin-top: 0.75rem; }
.form.inline input[type="email"] { flex: 1; min-width: 16rem; }
.route-builder .stop-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.5rem 0.6rem; background: var(--bg);
  border-radius: var(--radius); margin-bottom: 0.3rem;
}
.route-builder .stop-row .controls button { font-size: 0.75rem; padding: 0.2rem 0.4rem; margin-left: 0.2rem; }