/* FuelBoard. Plain, readable on a phone in a truck. */
:root {
  --ink: #1b1f1c; --muted: #5f6b63; --line: #d6ddd8; --bg: #f5f7f5; --card: #ffffff;
  --brand: #1f3d2b; --brand-ink: #ffffff; --ok: #2f7d4f; --warn: #b7791f; --bad: #b3261e; --amber: #fff4d6; --up: #b3261e; --down: #2f7d4f;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--ink); background: var(--bg); }
main { max-width: 1180px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.35rem; margin: 6px 0 12px; }
h1 .muted { font-size: .95rem; font-weight: normal; margin-left: 8px; }
h2 { font-size: 1.05rem; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.error { color: var(--bad); }
.pill { font-size: .7rem; padding: 2px 7px; border-radius: 999px; background: var(--amber); color: #6b4a00; vertical-align: middle; font-weight: 600; }
a { color: var(--brand); }

#topbar { display: flex; align-items: center; gap: 16px; padding: 8px 16px; background: var(--brand); color: var(--brand-ink); flex-wrap: wrap; }
#topbar .brand { color: inherit; font-weight: 700; text-decoration: none; }
#topbar .brand small { font-weight: 400; opacity: .8; margin-left: 6px; }
#topbar nav { display: flex; gap: 2px; flex-wrap: wrap; }
#topbar nav a { color: inherit; text-decoration: none; padding: 6px 10px; border-radius: 6px; opacity: .85; }
#topbar nav a.active, #topbar nav a:hover { background: rgba(255,255,255,.15); opacity: 1; }
#topbar .who { margin-left: auto; font-size: .9rem; }
button.link { background: none; border: 0; color: inherit; text-decoration: underline; cursor: pointer; padding: 0; font: inherit; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin-bottom: 14px; }
.login-wrap { max-width: 360px; margin: 48px auto 0; }
.login-wrap h1 { text-align: center; margin-bottom: 4px; }
.login-wrap > p { text-align: center; margin: 0 0 18px; }
.login-wrap .card { padding: 20px; }
.login-wrap .card label { display: block; margin-bottom: 14px; font-size: .85rem; font-weight: 600; color: var(--muted); }
.login-wrap .card input { display: block; width: 100%; margin-top: 5px; padding: 10px 12px; font-size: 1rem; }
.login-wrap .card button { width: 100%; padding: 11px; font-size: 1rem; margin-top: 4px; }
.login-wrap .card .error { margin: 10px 0 0; text-align: center; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px 14px; }
.grid label { display: flex; flex-direction: column; gap: 4px; font-size: .85rem; color: var(--muted); }
.grid label.check { flex-direction: row; align-items: center; gap: 8px; }
.grid .wide { grid-column: 1 / -1; }
.grid .actions { grid-column: 1 / -1; display: flex; gap: 10px; }
.grid p.muted { margin: 0; font-size: .85rem; }
.sub { font-size: .78rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 6px; }
input, select { font: inherit; padding: 7px 8px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink); }
button { font: inherit; padding: 8px 14px; border: 0; border-radius: 6px; background: var(--brand); color: var(--brand-ink); cursor: pointer; }
button[type=button], .tabs button { background: #e7ece8; color: var(--ink); }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tabs button.active { background: var(--brand); color: #fff; }
.toolbar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.toolbar h1 { margin: 0; }
label.inline { display: inline-flex; align-items: center; gap: 6px; font-size: .9rem; color: var(--muted); }
.row-wrap { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 8px 0; }
details.card summary { cursor: pointer; color: var(--muted); }
details.card[open] summary { margin-bottom: 10px; }
.cols-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 14px; }
body.viewer .admin-only { display: none; }

#flash { position: sticky; top: 8px; z-index: 5; padding: 10px 14px; border-radius: 8px; margin-bottom: 10px; background: var(--ok); color: #fff; }
#flash.bad { background: var(--bad); }
.warnings { background: var(--amber); border: 1px solid #e8d49a; border-radius: 8px; padding: 8px 12px; margin-bottom: 12px; font-size: .9rem; }
.warnings p { margin: 2px 0; }

/* Board */
.fuel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 16px; }
.fuel h2 { margin: 0 0 10px; display: flex; align-items: baseline; gap: 10px; }
.fuel h2 small { color: var(--muted); font-weight: normal; font-size: .85rem; }
.prices { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.daycol { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.daycol.tomorrow { border-color: var(--brand); }
.daycol .head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.daycol .head b { font-size: .95rem; }
.daycol .head small { color: var(--muted); }
.big { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.big div { padding: 6px 0; }
.big .lbl { font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.big .val { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.big .delta { font-size: .8rem; font-weight: 600; }
.delta.up { color: var(--up); } .delta.down { color: var(--down); } .delta.flat { color: var(--muted); }
.daycol.empty { color: var(--muted); display: flex; align-items: center; justify-content: center; min-height: 110px; text-align: center; }
.built { margin-top: 12px; }
table.lines { width: 100%; border-collapse: collapse; }
table.lines td, table.lines th { padding: 5px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; font-size: .92rem; }
table.lines td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.lines tr.subtotal td { font-weight: 700; background: #f2f5f3; }
table.lines td.src { color: var(--muted); font-size: .8rem; white-space: nowrap; }
table.lines tr.src-row { cursor: pointer; }
table.lines tr.src-row:hover td { background: #fafcfa; }
table.lines tr.detail td { background: #fbf8ec; color: var(--muted); font-size: .82rem; font-family: ui-monospace, Menlo, monospace; }
.onhand { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-top: 12px; }
.stat { border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.stat b { display: block; font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.stat span { font-size: .78rem; color: var(--muted); }
.stat.good b { color: var(--ok); } .stat.bad b { color: var(--bad); }
.context { font-size: .85rem; color: var(--muted); margin-top: 8px; }

/* tables */
.scroll { overflow-x: auto; }
table.plain { border-collapse: collapse; width: 100%; font-size: .9rem; background: var(--card); }
table.plain th, table.plain td { padding: 5px 8px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
table.plain th { background: #eef2f0; font-size: .8rem; }
table.plain td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.plain tr.big-move td { background: var(--amber); }
.tag { font-size: .7rem; padding: 1px 6px; border-radius: 4px; background: #e7ece8; color: var(--muted); }
.tag.shell { background: #fde9c9; color: #7a4e00; } .tag.manual { background: #e3ecf8; color: #1d4b83; }
.tag.ok { background: #e2f1e6; color: var(--ok); } .tag.mismatch, .tag.error { background: #fbe3e1; color: var(--bad); } .tag.hand { background: var(--amber); color: #6b4a00; }

/* settings */
.setting-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.setting { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.setting .cur { display: flex; justify-content: space-between; align-items: baseline; }
.setting .cur b { font-size: 1.3rem; font-variant-numeric: tabular-nums; }
.setting .cur small { color: var(--muted); }
.setting details { margin-top: 6px; font-size: .85rem; }
.setting details summary { color: var(--muted); cursor: pointer; }
.setting table { width: 100%; border-collapse: collapse; margin-top: 4px; }
.setting td { padding: 3px 4px; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }

/* tanks */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.tank { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px; }
.tank .row { display: flex; justify-content: space-between; align-items: baseline; gap: 6px; }
.tank .name { font-weight: 700; }
.bar { height: 12px; background: #e7ece8; border-radius: 6px; overflow: hidden; margin: 6px 0; }
.bar i { display: block; height: 100%; background: var(--ok); }
.tank.low .bar i { background: var(--warn); } .tank.empty .bar i { background: var(--bad); } .tank.offline .bar i { background: #999; }
.badge { font-size: .72rem; padding: 2px 7px; border-radius: 999px; background: #e7ece8; text-transform: uppercase; letter-spacing: .03em; }
.badge.low { background: var(--warn); color: #fff; } .badge.empty { background: var(--bad); color: #fff; } .badge.offline { background: #666; color: #fff; }
.tank small { color: var(--muted); }

@media (max-width: 640px) { .prices { grid-template-columns: 1fr; } .big .val { font-size: 1.3rem; } }