/* CueReach Mail: brand tokens (brand/BRAND.md) and the shared components every page uses.
   Phone first: one column under 720px, 16px side gutters, 44px tap targets. Light and dark. */
:root {
  --indigo: #23207A; --sky: #2FA8FF; --ocean: #0A5FB8; --night: #14123F; --ink: #1A1A33; --slate: #4B5470;
  --paper: #F7F9FC; --mist: #EAF5FF; --ice: #D9E6FF; --line: #D6DDEB; --white: #FFFFFF;
  --bg: var(--paper); --surface: var(--white); --raised: var(--mist); --text: var(--ink); --muted: var(--slate);
  --head: var(--indigo); --link: var(--ocean); --border: var(--line);
  --ok: #157A4A; --ok-bg: #E3F5EC; --warn: #8A5A00; --warn-bg: #FFF4D6; --err: #B42318; --err-bg: #FDECEA;
  --machine: #6B6F86; --machine-bg: #EEF0F6;
  --radius: 12px; --gap: 16px;
  --font: Figtree, 'Segoe UI', Arial, Helvetica, sans-serif;
  --display: Unbounded, 'Segoe UI', Arial, Helvetica, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E0C2B; --surface: #17154A; --raised: #221F63; --text: #E6EAF6; --muted: #BAC3DE; --head: #FFFFFF;
    --link: #7CC6FF; --border: #3A3787;
    --ok: #7EE2AE; --ok-bg: #12382A; --warn: #FFD27A; --warn-bg: #3A2E0E; --err: #FF9C94; --err-bg: #44161A;
    --machine: #B9BDD3; --machine-bg: #2A2860;
  }
  .logo-light { display: none; }
  .logo-dark { display: inline-block !important; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 var(--font); }
a { color: var(--link); }
h1, h2, h3 { font-family: var(--display); color: var(--head); line-height: 1.25; margin: 0 0 12px; }
h1 { font-size: 24px; font-weight: 800; letter-spacing: -0.3px; }
h2 { font-size: 18px; font-weight: 700; margin-top: 24px; }
h3 { font-size: 15px; font-weight: 700; font-family: var(--font); }
p { margin: 0 0 12px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; background: var(--surface); padding: 8px; z-index: 9; }
.muted { color: var(--muted); } .small { font-size: 14px; } .tiny { font-size: 12px; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 16px; }
.foot { text-align: center; padding: 24px 16px 40px; }

/* header */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.topbar-in { max-width: 1100px; margin: 0 auto; padding: 10px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo { height: 20px; width: auto; } .logo-dark { display: none; }
.brand-sub { font: 700 13px var(--font); color: var(--muted); text-transform: uppercase; letter-spacing: 1.4px; }
.nav { display: flex; gap: 4px; overflow-x: auto; -webkit-overflow-scrolling: touch; max-width: 100%; }
.nav a { padding: 10px 12px; border-radius: 8px; text-decoration: none; color: var(--text); font-weight: 600; white-space: nowrap; }
.nav a.on { background: var(--raised); color: var(--head); }
.statusbar { border-top: 1px solid var(--border); }
.statusbar.is-on { background: var(--ok-bg); } .statusbar.is-off { background: var(--surface); }
.statusbar-in { max-width: 1100px; margin: 0 auto; padding: 6px 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.signout { margin-left: auto; }

/* building blocks */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin: 0 0 var(--gap); }
.card > :last-child { margin-bottom: 0; }
.grid { display: grid; gap: var(--gap); grid-template-columns: 1fr; }
@media (min-width: 720px) { .grid-2 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.row-between { justify-content: space-between; }
.inline { display: inline; }
.stack > * + * { margin-top: 12px; }
.hide { display: none !important; }

/* stat tiles (dashboard and reports) */
.tiles { display: grid; gap: 10px; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 720px) { .tiles { grid-template-columns: repeat(4, 1fr); } }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.tile .k { font-size: 13px; color: var(--muted); font-weight: 600; }
.tile .v { font: 800 26px/1.15 var(--display); color: var(--head); margin-top: 2px; font-variant-numeric: tabular-nums; }
.tile .s { font-size: 13px; color: var(--muted); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 16px;
  border-radius: 8px; border: 2px solid var(--ocean); background: var(--surface); color: var(--link);
  font: 700 15px var(--font); text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--ocean); color: #fff; }
.btn-danger { background: var(--err); border-color: var(--err); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-danger { color: #2A0B0B; } .btn-primary { color: #fff; } }
.btn-sm { min-height: 34px; padding: 0 10px; font-size: 14px; }
.btn-lg { min-height: 52px; padding: 0 22px; font-size: 17px; }
.btn[disabled] { opacity: .55; cursor: default; }
.linkbtn { background: none; border: 0; color: var(--link); cursor: pointer; padding: 6px; font: inherit; text-decoration: underline; }

/* pills and badges */
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 13px; font-weight: 700; background: var(--raised); color: var(--head); }
.pill-on, .pill-ok { background: var(--ok); color: #fff; } .pill-off { background: var(--raised); color: var(--muted); }
.pill-warn { background: var(--warn-bg); color: var(--warn); } .pill-err { background: var(--err-bg); color: var(--err); }
.pill-machine { background: var(--machine-bg); color: var(--machine); }
@media (prefers-color-scheme: dark) { .pill-on, .pill-ok { color: #0B2A1B; } }

/* flash messages */
.flash { border-radius: 10px; padding: 12px 14px; margin: 0 0 var(--gap); background: var(--raised); border: 1px solid var(--border); }
.flash-ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.flash-warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.flash-err { background: var(--err-bg); color: var(--err); border-color: transparent; }

/* forms */
label { display: block; font-weight: 600; margin: 0 0 4px; }
.field { margin: 0 0 14px; }
.hint { font-size: 13px; color: var(--muted); margin-top: 4px; }
input[type=text], input[type=email], input[type=url], input[type=number], input[type=search], input[type=datetime-local],
input[type=date], input[type=time], select, textarea {
  width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--text); font: 16px var(--font); }
textarea { min-height: 220px; line-height: 1.5; font-family: ui-monospace, Consolas, monospace; font-size: 15px; }
input:focus, select:focus, textarea:focus, .btn:focus-visible, a:focus-visible { outline: 3px solid var(--sky); outline-offset: 1px; }
.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.check input { width: 20px; height: 20px; }

/* tables: scroll sideways inside their card on phones, never the page */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.t { width: 100%; border-collapse: collapse; font-size: 15px; }
table.t th, table.t td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.t th { font-size: 13px; color: var(--muted); font-weight: 700; white-space: nowrap; }
table.t td.num, table.t th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* charts (server-rendered SVG) */
.chart svg { width: 100%; height: auto; display: block; }
.chart .axis { stroke: var(--border); } .chart .lbl { fill: var(--muted); font: 12px var(--font); }
.chart .s1 { fill: var(--ocean); stroke: var(--ocean); } .chart .s2 { fill: var(--sky); stroke: var(--sky); }
.chart .s3 { fill: var(--machine); stroke: var(--machine); }
@media (prefers-color-scheme: dark) { .chart .s1 { fill: #7CC6FF; stroke: #7CC6FF; } }

/* email preview frame */
.preview-frame { width: 100%; min-height: 520px; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; }
.mail-meta { font-size: 14px; } .mail-meta dt { color: var(--muted); float: left; width: 84px; clear: left; } .mail-meta dd { margin: 0 0 4px 92px; }
pre.plain { white-space: pre-wrap; word-break: break-word; background: var(--raised); padding: 14px; border-radius: 10px; font: 15px/1.5 ui-monospace, Consolas, monospace; }

/* login */
.login { max-width: 420px; margin: 40px auto; text-align: center; }