:root {
    --bg: #0f1d13; --bg2: #08120b; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #eefaf0; --muted: #a9c7b0; --accent: #69db7c; --accent-ink: #062b0f; --field: rgba(255,255,255,.08);
    --good: #69db7c; --good-bg: rgba(105,219,124,.13); --warn: #fcc419; --warn-bg: rgba(252,196,25,.13); --bad: #ffa8a8; --bad-bg: rgba(255,107,107,.16);
    --own: #69db7c; --owe: #ffa8a8;
    color-scheme: dark;
}
@media (prefers-color-scheme: light) {
    :root { --bg: #f4fbf5; --bg2: #e3f3e6; --card: #fff; --line: #cfe6d4; --ink: #10261a; --muted: #4c6b55;
            --accent: #2b8a3e; --accent-ink: #fff; --field: #f6fcf7; --good: #2b8a3e; --good-bg: #ebfbee; --warn: #9a6700; --warn-bg: #fff8e6; --bad: #c92a2a; --bad-bg: #fff5f5;
            --own: #2b8a3e; --owe: #c92a2a; color-scheme: light; }
}
:root[data-theme="light"] { --bg: #f4fbf5; --bg2: #e3f3e6; --card: #fff; --line: #cfe6d4; --ink: #10261a; --muted: #4c6b55;
            --accent: #2b8a3e; --accent-ink: #fff; --field: #f6fcf7; --good: #2b8a3e; --good-bg: #ebfbee; --warn: #9a6700; --warn-bg: #fff8e6; --bad: #c92a2a; --bad-bg: #fff5f5;
            --own: #2b8a3e; --owe: #c92a2a; color-scheme: light; }
:root[data-theme="dark"] {
    --bg: #0f1d13; --bg2: #08120b; --card: rgba(255,255,255,.06); --line: rgba(255,255,255,.17);
    --ink: #eefaf0; --muted: #a9c7b0; --accent: #69db7c; --accent-ink: #062b0f; --field: rgba(255,255,255,.08);
    --good: #69db7c; --good-bg: rgba(105,219,124,.13); --warn: #fcc419; --warn-bg: rgba(252,196,25,.13); --bad: #ffa8a8; --bad-bg: rgba(255,107,107,.16);
    --own: #69db7c; --owe: #ffa8a8;
    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-side, .col-main { display: contents; }
.app > .topbar, .app > .back { order: 0; }
.app > header { order: 1; }
.result { order: 2; }
.balances { order: 3; }
.add-card { order: 4; }
.history { order: 5; }
.tools { order: 6; }
.app > .faq { order: 7; }
.app > footer { order: 8; }
header { text-align: center; margin-bottom: 1.1rem; }
h1 { margin: 0; font-size: 1.85rem; 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; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.1rem; margin-bottom: .9rem; min-width: 0; }
label { display: block; margin: .9rem 0 .35rem; font-size: .9rem; font-weight: 600; color: var(--muted); }
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[type=date]::-webkit-date-and-time-value { text-align: left; }
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; }
::placeholder { color: var(--muted); opacity: .75; }
.hint { margin: .45rem 0 0; color: var(--muted); font-size: .88rem; }
.hint.top { margin: -.3rem 0 .8rem; }
.lead { margin: 0 0 .8rem; }
[hidden] { display: none !important; }

/* buttons */
.primary, .secondary, .danger, .ghost { 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; }
.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; }
.ghost { border: 1px dashed var(--accent); background: transparent; color: var(--ink); font-weight: 600; }
.danger { border: 1px solid var(--bad); background: transparent; color: var(--bad); font-weight: 600; margin-top: .9rem; }
.link { display: block; min-height: 44px; margin-top: .4rem; padding: 0 .1rem; border: 0; background: none; color: var(--accent); font: inherit; font-size: .95rem; font-weight: 600; text-align: left; cursor: pointer; }
.link.small { min-height: 40px; margin-top: .1rem; font-size: .9rem; }
.link.center { margin: -.2rem auto .2rem; text-align: center; }

/* money boxes with the currency symbol in front */
.money { display: flex; align-items: center; min-height: 48px; background: var(--field); border: 1px solid var(--line); border-radius: 12px; padding: 0 .8rem; min-width: 0; }
.money:focus-within { outline: 3px solid var(--accent); outline-offset: 2px; }
.money span { color: var(--muted); font-weight: 600; white-space: nowrap; flex: none; }
.money .sym:empty { display: none; }
.money .sym { margin-right: .35rem; }
.money input { border: 0; background: transparent; padding: .6rem 0; outline: none; min-height: 46px; }
.money input:focus-visible { outline: none; }


/* the date and the account boxes */
#intro { margin-bottom: .2rem; }
#bal-body > label:first-child { margin-top: 0; }
#date { max-width: 16rem; }
.note { margin: .45rem 0 0; color: var(--muted); font-size: .9rem; }
.note.bad { color: var(--bad); font-weight: 600; }
.side-h { display: flex; justify-content: space-between; align-items: baseline; gap: .6rem; flex-wrap: wrap; margin: 1.3rem 0 .6rem; padding-bottom: .35rem; border-bottom: 2px solid var(--own); font-size: 1.05rem; }
.side-h.owe-h { border-bottom-color: var(--owe); }
.side-h span { font-variant-numeric: tabular-nums; color: var(--muted); font-weight: 700; overflow-wrap: anywhere; }
.accts { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; }
.accts:empty { display: none; }
.empty { margin: 0; color: var(--muted); font-size: .92rem; }
.acct { border: 1px solid var(--line); border-left: 6px solid var(--own); border-radius: 14px; padding: .75rem .85rem .8rem; background: var(--field); min-width: 0; }
.acct.owe { border-left-color: var(--owe); }
.acct.editing { outline: 3px solid var(--accent); outline-offset: 1px; }
.a-top { display: flex; justify-content: space-between; align-items: baseline; gap: .6rem; flex-wrap: wrap; }
.a-top h4 { margin: 0; font-size: 1.08rem; overflow-wrap: anywhere; min-width: 0; }
.tag { font-size: .8rem; font-weight: 600; color: var(--muted); }
.acct label { margin: .45rem 0 .3rem; font-size: .85rem; }
.acct .money { background: var(--card); }
.acct .money input { font-variant-numeric: tabular-nums; font-weight: 700; }
.a-change { margin: .4rem 0 0; font-size: .9rem; color: var(--muted); }
.a-change:empty { display: none; }
.a-change.good, .change.good, .h-ch.good { color: var(--good); font-weight: 700; }
.a-change.bad, .change.bad, .h-ch.bad { color: var(--bad); font-weight: 700; }
.a-err { margin: .35rem 0 0; color: var(--bad); font-weight: 600; font-size: .9rem; }
.a-err:empty { display: none; }
.a-btns, .h-btns { display: flex; gap: .4rem; margin-top: .55rem; }
.mini { min-height: 40px; padding: 0 .9rem; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer; }
.mini.del { color: var(--bad); }
.mini:disabled { cursor: default; color: var(--muted); background: transparent; }

/* add form */
form h2 { margin-bottom: .2rem; }
.form-btns { display: grid; grid-template-columns: minmax(0, 1fr); gap: .5rem; margin-top: .9rem; }
.form-btns.editing { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
form.editing { outline: 3px solid var(--accent); outline-offset: 6px; border-radius: 8px; }
optgroup { color: #111; background: #fff; }
.err { margin: .6rem 0 0; color: var(--bad); font-weight: 600; }
.err:empty { margin: 0; }
.msg { margin: .5rem 0 0; color: var(--muted); font-size: .92rem; overflow-wrap: anywhere; }
.msg:empty { margin: 0; }
.msg.warn { color: var(--warn); font-weight: 600; }
.msg button { min-height: 40px; margin-left: .4rem; padding: 0 .8rem; border: 1px solid var(--accent); border-radius: 10px; background: none; color: var(--accent); font: inherit; font-weight: 700; cursor: pointer; }

/* net worth */
.result { text-align: center; }
.big-label { margin: 0; font-size: .95rem; font-weight: 600; color: var(--muted); }
.big { margin: .05rem 0 0; font-size: clamp(2.2rem, 10vw, 2.9rem); font-weight: 800; letter-spacing: -.02em; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.15; overflow-wrap: anywhere; }
.big.negative { color: var(--bad); }
.neg-note { margin: .1rem 0 0; color: var(--bad); font-weight: 600; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .5rem; margin-top: .7rem; }
.split div { border: 1px solid var(--line); border-top: 4px solid var(--own); border-radius: 12px; padding: .45rem .5rem; background: var(--field); min-width: 0; }
.split div + div { border-top-color: var(--owe); }
.split span { display: block; font-size: .85rem; color: var(--muted); font-weight: 600; }
.split b { display: block; font-size: 1.15rem; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.change { margin: .75rem 0 0; font-size: 1.05rem; font-weight: 700; overflow-wrap: anywhere; }
.meta { margin: .3rem 0 0; color: var(--muted); font-size: .93rem; overflow-wrap: anywhere; }
.meta:empty { display: none; }
.stale { margin: .6rem 0 0; padding: .5rem .7rem; border-radius: 10px; background: var(--warn-bg); color: var(--warn); font-weight: 600; font-size: .93rem; }
.chart { margin-top: .9rem; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .zero { stroke: var(--bad); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart .area { fill: var(--accent); opacity: .14; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.chart .dot { fill: var(--accent); }
.chart .dot.sel { fill: var(--card); stroke: var(--accent); stroke-width: 3; }
.chart .lbl { fill: var(--muted); font-size: 13px; font-weight: 600; font-family: inherit; }

/* past updates */
.history h2 { display: flex; align-items: baseline; gap: .4rem; }
.count { color: var(--muted); font-weight: 500; font-size: 1rem; }
.hist { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; max-height: 30rem; overflow-y: auto; }
.h-row { display: flex; justify-content: space-between; align-items: center; gap: .6rem; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 12px; padding: .5rem .7rem; background: var(--field); min-width: 0; }
.h-row.sel { outline: 2px solid var(--accent); outline-offset: -1px; }
.h-info { display: flex; flex-wrap: wrap; align-items: baseline; gap: .15rem .7rem; min-width: 0; }
.h-date { font-size: .95rem; }
.h-net { font-weight: 700; font-variant-numeric: tabular-nums; }
.h-ch { font-size: .88rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.h-btns { margin: 0; }

/* share and settings */
.tool-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .5rem; margin-top: .9rem; }
.tool-grid .secondary { font-size: .93rem; line-height: 1.2; }

/* questions */
.faq { margin-top: .6rem; }
.faq details { border-bottom: 1px solid var(--line); padding: .3rem 0; }
.faq summary { cursor: pointer; font-weight: 600; min-height: 44px; display: flex; align-items: center; }
.faq p { margin: .2rem 0 .7rem; color: var(--muted); }
footer { margin-top: 1.4rem; text-align: center; font-size: .9rem; }
footer a { color: var(--muted); }

.tools > label:first-of-type { margin-top: 0; }
.tools .hint { margin-top: .8rem; }

/* back to the list of all apps */
.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; align-self: flex-start; }
.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: 380px) {
    .tool-grid { grid-template-columns: minmax(0, 1fr); }
    #date { max-width: none; }
}
/* very narrow phones: the light/dark switch shows only its icon so the top bar stays on one line */
@media (max-width: 360px) {
    .topbar .theme-toggle { padding: 0; width: 44px; justify-content: center; }
    .topbar .theme-toggle span { display: none; }
}

@media print {
    body { background: #fff; color: #000; padding: 0; }
    .back, .add-card, .tools, .faq, footer, .a-btns, .h-btns, .msg, #intro, .note, .stale { display: none !important; }
    .card, .acct, .h-row { border: 1px solid #999; background: #fff; break-inside: avoid; }
    .money input { color: #000; }
    .app { display: block; }
}

/* laptops and desktops: the balances on the left, net worth, history 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 > .col-main { grid-column: 1; grid-row: 3; }
    .app > .col-side { grid-column: 2; grid-row: 3; }
    .app > .topbar { grid-row: 1; }
    .app > header { grid-row: 2; }
    .app > .faq { grid-row: 4; width: min(760px, 100%); justify-self: center; }
    .app > footer { grid-row: 5; width: min(760px, 100%); justify-self: center; }
    header h1 { font-size: 2.3rem; }
    .accts { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}