:root {
  /* Light theme. Status colors (--ok/--warn/--danger/--accent) do double
     duty as both button fills (white text on top) and badge/stat-tile text
     (on a pale tint of themselves) -- each is picked dark/saturated enough
     to clear ~4.5:1 contrast in both roles, since badge text especially is
     small (12px) and doesn't get the "large text" 3:1 relaxation. */
  --bg: #eef1f6;
  --panel: #ffffff;
  --border: #dde3ec;
  --text: #1b2430;
  --muted: #64748b;
  --accent: #1d4ed8;
  --ok: #157347;
  --warn: #92650b;
  --danger: #b3261e;
  --header-bg: #ffffff;
  --header-border: #e2e5ea;
  --header-text: #445068;
  --brand-red: #d92b2b;
  --brand-navy: #16264a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  overflow-x: hidden; /* the page itself never scrolls horizontally -- wide
                         content (tables, canvas) scrolls inside its own box */
}

/* ── AUTOMAC brand header, shared across every page (rendered by header.js) ── */
.app-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand {
  text-decoration: none;
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.brand img {
  display: block;
  height: 34px;   /* desktop header height; width follows naturally (~107px
                      at this logo's ~3.14:1 aspect ratio) */
  width: auto;
  max-width: 100%;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--header-border);
  color: var(--header-text);
  font-size: 18px;
  padding: 6px 10px;
  border-radius: 6px;
  min-height: 36px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}
.main-nav a {
  color: var(--header-text);
  text-decoration: none;
  font-size: 14px;
  padding: 9px 10px;
  border-radius: 6px;
  white-space: nowrap;
}
.main-nav a.active { color: var(--brand-navy); font-weight: 700; background: #eef1f6; }
.main-nav a:hover { background: #f2f4f7; }
.nav-divider {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: #9aa5b8;
  padding: 9px 8px 9px 12px;
  white-space: nowrap;
}
.alert-badge-count {
  display: inline-block;
  background: var(--danger);
  color: #fff;
  border-radius: 999px;
  font-size: 11px;
  padding: 1px 6px;
  margin-left: 4px;
  vertical-align: middle;
}
.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
  padding-left: 12px;
  border-left: 1px solid var(--header-border);
  font-size: 13px;
  color: var(--header-text);
  white-space: nowrap;
}
.user-chip .user-role-badge {
  background: #eef1f6;
  color: var(--brand-navy);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}
.user-chip .logout-link {
  color: var(--brand-red);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 4px;
}
.user-chip .logout-link:hover { text-decoration: underline; }

@media (max-width: 760px) {
  .brand img { height: 26px; } /* same file, scaled smaller via CSS for mobile */
  .nav-toggle { display: inline-block; }
  .main-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    border-top: 1px solid var(--header-border);
    padding-top: 8px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 10px; }
  .nav-divider { padding: 10px 8px 2px; }
  .user-chip {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--header-border);
    padding-top: 10px;
    margin-top: 6px;
    justify-content: space-between;
  }
}

/* ── layout ────────────────────────────────────────────────────────── */
main { max-width: 1100px; margin: 0 auto; padding: 20px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
h1 { font-size: 20px; margin: 0 0 12px; }
h2 { font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin: 0 0 14px; }

/* ── tables: horizontal scroll stays inside the box, never the page ── */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 480px; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 500; }

.badge { padding: 3px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge.available { background: rgba(21,115,71,.12); color: var(--ok); }
.badge.taken { background: rgba(146,101,11,.12); color: var(--warn); }
.badge.mismatch { background: rgba(179,38,30,.12); color: var(--danger); }
.badge.pending { background: rgba(29,78,216,.12); color: var(--accent); }

button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 10px 16px;
  font-size: 14px;
  cursor: pointer;
  min-height: 40px; /* touch-sized tap target */
}
button:hover { opacity: .9; }
button:disabled { opacity: .4; cursor: not-allowed; }
button.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
button.danger { background: var(--danger); }

input, select {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 10px;
  font-size: 16px; /* >=16px avoids iOS Safari zooming in on focus */
  width: 100%;
  min-height: 42px;
}
label { font-size: 13px; color: var(--muted); display: block; margin: 10px 0 4px; }
.form-row { display: flex; gap: 12px; flex-wrap: wrap; }
.form-row > * { flex: 1; min-width: 160px; }
.error { color: var(--danger); font-size: 13px; margin-top: 8px; }
.muted { color: var(--muted); }
.center-screen {
  min-height: calc(100vh - 61px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-box { width: 100%; max-width: 340px; }
.stat { font-size: 28px; font-weight: 700; }
.roi-canvas-wrap { position: relative; display: inline-block; max-width: 100%; overflow-x: auto; }
.roi-canvas-wrap canvas { border: 1px solid var(--border); cursor: crosshair; max-width: 100%; height: auto; }
.pill-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }

/* ── admin overview page ──────────────────────────────────────────── */
.status-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.stat-tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  box-shadow: 0 1px 2px rgba(16, 24, 40, .04);
}
.stat-tile-value { font-size: 26px; font-weight: 800; }
.stat-tile-label { font-size: 12px; color: var(--muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .03em; }
.stat-tile-danger .stat-tile-value { color: var(--danger); }
.stat-tile-active .stat-tile-value { color: var(--accent); }

.active-request-text { font-size: 16px; line-height: 1.5; margin: 0; }
.overview-alert-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.overview-alert-row:last-child { border-bottom: none; }
.overview-alert-message { flex: 1; min-width: 200px; font-size: 14px; }

.activity-feed { list-style: none; margin: 0; padding: 0; }
.activity-feed li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.activity-feed li:last-child { border-bottom: none; }
.activity-time { white-space: nowrap; font-size: 12px; }

/* ── superadmin tools page ────────────────────────────────────────── */
.tab-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.tab-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 600;
}
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.raw-json {
  background: #f4f6f9;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 14px;
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.5;
  white-space: pre;
  margin: 0;
}

/* ── small screens ────────────────────────────────────────────────── */
@media (max-width: 640px) {
  main { padding: 14px; }
  .card { padding: 16px; }
  .form-row { flex-direction: column; }
  .form-row > * { min-width: 0; }
  .status-strip { grid-template-columns: repeat(2, 1fr); }
  .activity-feed li { flex-direction: column; gap: 2px; }
  th, td { padding: 8px 6px; font-size: 13px; }
}