:root {
    --bg: #2e2209; --bg2: #160f03; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.18);
    --ink: #fdf7ea; --muted: #e3d3b0; --accent: #ffc94a; --accent-ink: #2a1a00; --field: rgba(255,255,255,.08);
    --soft: rgba(255,201,74,.15); --good: #8ce99a; --warn: #ffb066; --warn-bg: rgba(255,176,102,.14); --bad: #fda4af; --bad-bg: rgba(253,164,175,.13);
    color-scheme: dark;
}
@media (prefers-color-scheme: light) {
    :root { --bg: #fff8e8; --bg2: #fbefd2; --card: #fff; --line: #ead9b4; --ink: #2a1d05; --muted: #6a5428;
            --accent: #8f5d00; --accent-ink: #fff; --field: #fffcf4; --soft: #fdf0cf; --good: #1f7a17; --warn: #a14f00; --warn-bg: #fff0e0; --bad: #b91c1c; --bad-bg: #fdecec; color-scheme: light; }
}
:root[data-theme="light"] { --bg: #fff8e8; --bg2: #fbefd2; --card: #fff; --line: #ead9b4; --ink: #2a1d05; --muted: #6a5428;
            --accent: #8f5d00; --accent-ink: #fff; --field: #fffcf4; --soft: #fdf0cf; --good: #1f7a17; --warn: #a14f00; --warn-bg: #fff0e0; --bad: #b91c1c; --bad-bg: #fdecec; color-scheme: light; }
:root[data-theme="dark"] {
    --bg: #2e2209; --bg2: #160f03; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.18);
    --ink: #fdf7ea; --muted: #e3d3b0; --accent: #ffc94a; --accent-ink: #2a1a00; --field: rgba(255,255,255,.08);
    --soft: rgba(255,201,74,.15); --good: #8ce99a; --warn: #ffb066; --warn-bg: rgba(255,176,102,.14); --bad: #fda4af; --bad-bg: rgba(253,164,175,.13);
    color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; padding: clamp(1rem,4vw,2.5rem) 1rem 4rem; display: flex; justify-content: center;
       font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink);
       background: var(--bg2) linear-gradient(180deg, var(--bg), var(--bg2) 900px) no-repeat; touch-action: manipulation; }
.app { width: min(560px, 100%); min-width: 0; display: flex; flex-direction: column; }
.col-main, .col-side { display: contents; }
.app > .topbar, .app > .back { order: 0; }
.app > header, .warn-box { order: 1; }
.next { order: 2; }
.week { order: 3; }
.count { order: 4; }
.families { order: 5; }
.costs { order: 6; }
.settings { order: 7; }
.app > .faq { order: 8; }
.app > footer { order: 9; }
/* first use: families first */
.app.setup .families { order: 2; }
.app.setup .next { order: 3; }
header { text-align: center; margin-bottom: 1.1rem; }
h1 { margin: 0; font-size: 1.75rem; line-height: 1.2; letter-spacing: -.02em; }
.sub { margin: .4rem 0 0; color: var(--muted); font-size: 1rem; }
h2 { margin: 0 0 .7rem; font-size: 1.15rem; overflow-wrap: anywhere; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.1rem; margin-bottom: .9rem; min-width: 0; }
label, legend { display: block; margin: .9rem 0 .35rem; font-size: .9rem; font-weight: 600; color: var(--muted); padding: 0; }
input[type=text], input[type=date], select { width: 100%; min-width: 0; min-height: 48px; padding: .6rem .8rem; font: inherit; font-size: 1.05rem; color: var(--ink);
       background: var(--field); border: 1px solid var(--line); border-radius: 12px; }
input[type=date] { -webkit-appearance: none; appearance: none; display: block; }
input[aria-invalid="true"] { border-color: var(--bad); }
select option { color: #111; background: #fff; }
input:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.check input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
::placeholder { color: var(--muted); opacity: .75; }
.hint { margin: .45rem 0 0; color: var(--muted); font-size: .88rem; overflow-wrap: anywhere; }
.hint.top { margin: -.4rem 0 .8rem; }
.hint.top2 { margin: -.1rem 0 .6rem; }
.hint.top0 { margin: 0 0 .2rem; }
.hint:empty { display: none; }
.muted { color: var(--muted); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; margin: 0; padding: 0; }
[hidden] { display: none !important; }
.warn-box { margin: 0 0 .9rem; padding: .7rem .9rem; border-radius: 12px; background: var(--warn-bg); border-left: 5px solid var(--warn); font-weight: 600; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }

/* buttons */
.primary, .secondary, .danger { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 48px; padding: .5rem .8rem; border-radius: 12px;
       font: inherit; font-weight: 700; text-align: center; text-decoration: none; cursor: pointer; line-height: 1.2; overflow-wrap: anywhere; }
.primary { border: 0; background: var(--accent); color: var(--accent-ink); }
.secondary { border: 1px solid var(--line); background: var(--field); color: var(--ink); font-weight: 600; }
.secondary.small, .primary.small { width: auto; min-height: 44px; padding: 0 .85rem; font-size: .92rem; margin: 0; }
.danger { border: 1px solid var(--bad); background: transparent; color: var(--bad); font-weight: 600; margin-top: .9rem; }
button:disabled { opacity: .45; cursor: default; }
.link { display: block; min-height: 44px; margin-top: .2rem; padding: 0 .1rem; border: 0; background: none; color: var(--accent); font: inherit; font-size: .95rem; font-weight: 600; text-align: left; cursor: pointer; }
.link.center { margin: .1rem auto 0; text-align: center; }
.err { margin: .4rem 0 0; color: var(--bad); font-weight: 600; font-size: .92rem; overflow-wrap: anywhere; }
.err:empty { margin: 0; }
.msg { margin: 0; color: var(--muted); font-size: .95rem; overflow-wrap: anywhere; }
.msg.show { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem .8rem; margin: .2rem 0 .8rem; padding: .5rem .75rem; border-radius: 12px; background: var(--soft); color: var(--ink); }
.msg .undo { min-height: 40px; padding: 0 .9rem; border: 1px solid var(--accent); border-radius: 10px; background: none; color: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }
.settings .msg.show { margin: .8rem 0 0; }
.row-btns { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.row-btns > button { flex: 1 1 9rem; width: auto; }
.tool-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .5rem; margin-top: 1rem; }
.two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0 .6rem; min-width: 0; }
.two > div { min-width: 0; }
.badge { font-size: .78rem; font-weight: 700; padding: .1rem .6rem; border-radius: 999px; background: var(--soft); color: var(--ink); border: 1px solid var(--line); white-space: nowrap; }
.badge.behind { background: var(--warn-bg); border-color: var(--warn); }
.badge.sw { background: var(--warn-bg); border-color: var(--warn); }
.check { display: flex; align-items: center; gap: .65rem; margin: 0; padding: .4rem 0; color: var(--ink); font-size: 1rem; font-weight: 400; cursor: pointer; min-height: 44px; min-width: 0; overflow-wrap: anywhere; }
.check input { width: 22px; height: 22px; margin: 0; flex: none; accent-color: var(--accent); }

/* who drives next */
.next { border: 2px solid var(--accent); }
.start-here { margin: .2rem 0 .2rem; padding: .8rem .9rem; border: 1px dashed var(--line); border-radius: 12px; }
.start-h { margin: 0 0 .3rem; font-weight: 700; }
.start-here ol { margin: 0; padding-left: 1.3rem; }
.start-here li { margin: .2rem 0; }
.start-here li.ok { color: var(--muted); text-decoration: line-through; }
.start-here a { color: var(--accent); font-weight: 600; }
.next-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.next-list:empty { display: none; }
.next-box { border: 1px solid var(--line); border-left: 6px solid var(--accent); border-radius: 14px; padding: .6rem .8rem .7rem; background: var(--field); min-width: 0; }
.next-box h3 { margin: 0 0 .2rem; font-size: 1.05rem; overflow-wrap: anywhere; }
.n-run { display: grid; grid-template-columns: 6.2rem minmax(0, 1fr); gap: 0 .5rem; margin: .35rem 0 0; min-width: 0; }
.n-when { color: var(--muted); font-weight: 600; font-size: .9rem; padding-top: .12rem; }
.n-who { font-size: 1.12rem; overflow-wrap: anywhere; }
.n-who.bad { color: var(--bad); font-weight: 700; }
.n-kids { grid-column: 2; color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
.n-off { margin: .3rem 0 0; font-weight: 600; }

/* the week */
.week-nav, .month-nav { display: flex; align-items: center; gap: .5rem; }
.week-nav button, .month-nav button { flex: none; }
.month-nav { margin: 1rem 0 .3rem; }
.month-nav button { width: 48px; justify-content: center; padding: 0; font-size: 1.2rem; }
.week-range { flex: 1 1 auto; margin: 0; text-align: center; font-weight: 700; overflow-wrap: anywhere; min-width: 0; }
#week-empty { margin: .8rem 0 0; }
.day-list { list-style: none; margin: .8rem 0 0; padding: 0; display: grid; gap: .6rem; }
.day-list:empty { display: none; }
.day-box { border: 1px solid var(--line); border-left: 6px solid var(--accent); border-radius: 14px; padding: .6rem .8rem .7rem; background: var(--field); min-width: 0; }
.day-box.is-today { border-width: 2px 2px 2px 6px; border-color: var(--accent); }
.day-box.past { border-left-color: var(--line); }
.day-box.off { border-left-color: var(--line); }
.d-head { display: flex; align-items: center; justify-content: space-between; gap: .4rem .6rem; flex-wrap: wrap; }
.d-head h3 { margin: 0; font-size: 1.05rem; overflow-wrap: anywhere; min-width: 0; }
.off-btn { min-height: 40px; padding: 0 .8rem; border: 1px solid var(--line); border-radius: 999px; background: none; color: var(--muted); font: inherit; font-size: .85rem; font-weight: 700; cursor: pointer; }
.off-btn[aria-pressed="true"] { border-color: var(--warn); color: var(--warn); background: var(--warn-bg); }
.d-off { margin: .4rem 0 0; color: var(--muted); overflow-wrap: anywhere; }
.run { border-top: 1px solid var(--line); margin-top: .5rem; padding-top: .5rem; min-width: 0; }
.r-top { display: flex; align-items: center; gap: .3rem .6rem; flex-wrap: wrap; }
.r-when { color: var(--muted); font-size: .85rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; }
.r-who { margin: .1rem 0 0; font-size: 1.1rem; overflow-wrap: anywhere; }
.r-who.bad { color: var(--bad); font-weight: 700; font-size: 1rem; }
.r-who.muted { font-size: .95rem; }
.r-kids { margin: .1rem 0 0; font-size: .92rem; overflow-wrap: anywhere; }
.seats { color: var(--muted); white-space: nowrap; }
.r-warn { margin: .4rem 0 0; padding: .45rem .7rem; border-radius: 10px; background: var(--bad-bg); border-left: 4px solid var(--bad); font-size: .9rem; overflow-wrap: anywhere; }
.r-btns { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .45rem; }
.change-btn { flex: 1 1 8rem; min-height: 40px; padding: 0 .7rem; border: 1px solid var(--line); border-radius: 10px; background: none; color: var(--accent); font: inherit; font-size: .88rem; font-weight: 700; cursor: pointer; }
.change-btn[aria-expanded="true"] { border-color: var(--accent); background: var(--soft); }
.picker { margin-top: .5rem; padding: .6rem .7rem; border: 2px solid var(--accent); border-radius: 12px; background: var(--card); min-width: 0; }
.picker label:first-child, .picker legend { margin-top: 0; }
.week-tools { margin-top: 1rem; }
#share[hidden] ~ #print { grid-column: 1 / -1; }

/* drives so far */
.count-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.count-row { display: flex; align-items: center; gap: .3rem .7rem; flex-wrap: wrap; padding: .5rem .75rem; border: 1px solid var(--line); border-radius: 12px; background: var(--field); min-width: 0; }
.c-name { flex: 1 1 auto; font-weight: 700; overflow-wrap: anywhere; min-width: 0; }
.c-num { font-weight: 600; white-space: nowrap; }

/* families */
.box-list { list-style: none; margin: 0 0 .6rem; padding: 0; display: grid; gap: .55rem; }
.box-list:empty { display: none; }
.box { border: 1px solid var(--line); border-left: 6px solid var(--accent); border-radius: 14px; padding: .6rem .8rem .7rem; background: var(--field); min-width: 0; }
.box-top { display: flex; justify-content: space-between; align-items: baseline; gap: .2rem .6rem; flex-wrap: wrap; }
.box-name { margin: 0; font-size: 1.08rem; overflow-wrap: anywhere; min-width: 0; }
.box-sub { margin: .15rem 0 0; color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
.box-sub.em { color: var(--accent); font-weight: 600; }
.box-btns { display: flex; gap: .4rem; margin-top: .55rem; flex-wrap: wrap; }
.box-btns button { flex: 1 1 5.5rem; min-height: 44px; }
.away-list, .hol-list { list-style: none; margin: .4rem 0 0; padding: 0; display: grid; gap: .3rem; }
.hol-list:empty, .away-list:empty { display: none; }
.away-row { display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .2rem .2rem .2rem .7rem; border: 1px solid var(--line); border-radius: 10px; font-size: .92rem; min-width: 0; }
.away-row span { overflow-wrap: anywhere; min-width: 0; }
.away-row.past { opacity: .6; }
.x-btn { flex: none; width: 44px; height: 44px; border: 0; border-radius: 10px; background: none; color: var(--muted); font: inherit; font-size: 1.4rem; line-height: 1; cursor: pointer; }
.x-btn:hover { color: var(--bad); }
#f-open { margin-top: .4rem; }
.panel { margin-top: .7rem; padding: .8rem; border: 2px solid var(--accent); border-radius: 12px; background: var(--card); min-width: 0; }
.panel h3 { margin: 0 0 .1rem; font-size: 1rem; overflow-wrap: anywhere; }
.kid-rows { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; }
.kid-row { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) 44px; gap: .4rem; align-items: center; min-width: 0; padding: .4rem; border: 1px solid var(--line); border-radius: 12px; background: var(--field); }
.kid-row input, .kid-row select { font-size: 1rem; }
.no-grid { display: grid; gap: .35rem; }
.no-row { display: grid; grid-template-columns: 2.8rem repeat(auto-fit, minmax(0, 1fr)); gap: .35rem; align-items: center; min-width: 0; }
.no-day { font-weight: 700; font-size: .92rem; }
.no-chip { min-height: 44px; min-width: 0; padding: 0 .4rem; border: 2px solid var(--line); border-radius: 10px; background: var(--field); color: var(--muted); font: inherit; font-size: .88rem; font-weight: 700; cursor: pointer; overflow-wrap: anywhere; line-height: 1.15; }
.no-chip[aria-pressed="true"] { border-color: var(--bad); background: var(--bad-bg); color: var(--ink); }

/* fuel costs */
.s-total { margin: .6rem 0 .3rem; font-weight: 700; text-align: center; overflow-wrap: anywhere; }
.pays { list-style: none; margin: .4rem 0 .6rem; padding: 0; display: grid; gap: .35rem; }
.pay { padding: .55rem .8rem; border-radius: 12px; background: var(--soft); border-left: 5px solid var(--accent); font-size: 1.05rem; overflow-wrap: anywhere; }
.pay.even { border-left-color: var(--good); }
.st-table { width: 100%; border-collapse: collapse; font-size: .88rem; table-layout: fixed; }
.st-table th, .st-table td { text-align: left; padding: .35rem .3rem; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; vertical-align: top; }
.st-table th { color: var(--muted); font-weight: 600; }
.st-table td.good { color: var(--good); font-weight: 700; }
.st-table td.bad { color: var(--bad); font-weight: 700; }

/* settings */
.day-chips { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: .3rem; }
.day-chip { min-height: 44px; min-width: 0; padding: 0; border: 2px solid var(--line); border-radius: 10px; background: var(--field); color: var(--muted); font: inherit; font-size: .88rem; font-weight: 700; cursor: pointer; }
.day-chip[aria-pressed="true"] { border-color: var(--accent); background: var(--soft); color: var(--ink); }
.sub-h { margin: 1.1rem 0 .4rem; font-size: 1rem; }
#h-open { margin-top: .3rem; }
#restart { margin-top: 1rem; }

/* questions */
.faq { margin-top: 1.2rem; }
.faq details { border: 1px solid var(--line); border-radius: 12px; margin: 0 0 .5rem; background: var(--card); }
.faq summary { cursor: pointer; padding: .75rem .9rem; font-weight: 600; min-height: 44px; }
.faq details p { margin: 0; padding: 0 .9rem .8rem; color: var(--muted); }
footer { margin-top: 1.4rem; text-align: center; font-size: .9rem; }
footer a { color: var(--muted); }

.back { display: inline-flex; align-items: center; gap: .4rem; min-height: 44px; margin: 0 0 .5rem; padding: 0 1rem 0 .8rem; border: 1px solid var(--line, rgba(127,127,127,.4)); border-radius: 999px; color: var(--muted, var(--mut, inherit)); font-size: .92rem; font-weight: 600; text-decoration: none; background: transparent; }
.back:hover { color: var(--ink, inherit); border-color: currentColor; }
.back:focus-visible { outline: 3px solid var(--accent, var(--acc, #fff)); outline-offset: 2px; }

/* narrow phones */
@media (max-width: 420px) {
    .card { padding: 1rem .8rem; }
    .box, .day-box, .next-box { padding: .55rem .65rem .65rem; }
    .tool-grid { grid-template-columns: minmax(0, 1fr); }
    .row-btns > button { flex-basis: 100%; }
    .n-run { grid-template-columns: minmax(0, 1fr); }
    .n-kids { grid-column: 1; }
    .kid-row { grid-template-columns: minmax(0, 1fr) 44px; }
    .kid-row select { grid-column: 1; grid-row: 2; }
}
@media (max-width: 360px) {
    .topbar .theme-toggle { padding: 0; width: 44px; justify-content: center; }
    .topbar .theme-toggle span { display: none; }
    .week-nav button { padding: 0 .6rem; }
    .two { grid-template-columns: minmax(0, 1fr); }
    .day-chip { font-size: .78rem; }
}

@media print {
    body { background: #fff; color: #000; padding: 0; display: block; font-size: 11pt; }
    .app > *:not(.col-main), .col-main > *:not(.week), .topbar, .week-nav button, #this-week, .r-btns, .off-btn, .picker, .week-tools, .msg { display: none !important; }
    .col-main, .app { display: block !important; width: 100%; }
    .card, .day-box { border: 1px solid #888 !important; background: #fff !important; break-inside: avoid; }
    * { color: #000 !important; }
}

/* laptops and desktops: who drives on the left, families and settings on the right */
@media (min-width: 900px) {
    .app { width: min(1140px, 100%); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); column-gap: 1.5rem; align-items: start; }
    .app > * { grid-column: 1 / -1; }
    .col-main, .col-side { display: block; min-width: 0; }
    .app > .topbar { grid-row: 1; }
    .app > header { grid-row: 2; }
    .app > .warn-box { grid-row: 3; }
    .app > .col-main { grid-column: 1; grid-row: 4; }
    .app > .col-side { grid-column: 2; grid-row: 4; }
    .app > .faq { grid-row: 5; width: min(760px, 100%); justify-self: center; }
    .app > footer { grid-row: 6; width: min(760px, 100%); justify-self: center; }
    header h1 { font-size: 2.3rem; }
    .next-list { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
}