/* Receipt → Spreadsheet
 * Design language: the receipt itself. Thermal-paper intake slip (mono type,
 * pinked bottom edge), ledger figures, quiet counter-top background.
 * Type: IBM Plex Mono (receipt/data) + IBM Plex Sans (UI).
 */

:root {
  --counter: #e9ecef;        /* page: the shop counter */
  --paper: #fdfdfa;          /* receipt/card surface */
  --ink: #1c2433;            /* receipt ink */
  --ink-2: #5b6572;
  --ink-3: #8b94a1;
  --rule: #d8dce1;           /* hairlines */
  --accent: #2a78d6;         /* ledger blue (chart series 1) */
  --accent-2: #eb6834;       /* category chart (chart series 2) */
  --danger: #d03b3b;
  --wash: #eaf2fc;           /* accent wash */
  --shadow: 0 1px 2px rgba(28, 36, 51, .07), 0 8px 24px -12px rgba(28, 36, 51, .18);
}
@media (prefers-color-scheme: dark) {
  :root {
    --counter: #11151c;
    --paper: #1c222c;
    --ink: #e9edf2;
    --ink-2: #a6afbc;
    --ink-3: #6e7885;
    --rule: #313a47;
    --accent: #3987e5;
    --accent-2: #d95926;
    --danger: #e66767;
    --wash: #203148;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }  /* beat display:grid/flex classes */
body {
  margin: 0 auto;
  max-width: 920px;
  padding: 2.5rem 1rem 5rem;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  background: var(--counter);
  color: var(--ink);
  line-height: 1.55;
}
.mono, .wordmark, .paper, .tile-value, td.num, th, tfoot td, .chart text {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden;
}

/* ---------- masthead ---------- */
.masthead { text-align: center; margin-bottom: 2.2rem; }
.wordmark {
  font-size: clamp(1.05rem, 3.4vw, 1.55rem);
  font-weight: 600;
  letter-spacing: .04em;
  white-space: nowrap;
}
.tagline { margin: .6rem auto .4rem; max-width: 46rem; color: var(--ink-2); }
.fineprint { margin: 0 auto; max-width: 46rem; font-size: .8rem; color: var(--ink-3); }
.fineprint a { color: var(--accent); }

/* ---------- intake: the receipt ---------- */
.intake {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
}
@media (max-width: 700px) { .intake { grid-template-columns: 1fr; } }

#dropzone { display: block; cursor: pointer; }
.paper {
  background: var(--paper);
  padding: 1.4rem 1.6rem 2rem;
  box-shadow: var(--shadow);
  /* pinked bottom edge — the torn receipt */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px),
    97.5% 100%, 95% calc(100% - 9px), 92.5% 100%, 90% calc(100% - 9px),
    87.5% 100%, 85% calc(100% - 9px), 82.5% 100%, 80% calc(100% - 9px),
    77.5% 100%, 75% calc(100% - 9px), 72.5% 100%, 70% calc(100% - 9px),
    67.5% 100%, 65% calc(100% - 9px), 62.5% 100%, 60% calc(100% - 9px),
    57.5% 100%, 55% calc(100% - 9px), 52.5% 100%, 50% calc(100% - 9px),
    47.5% 100%, 45% calc(100% - 9px), 42.5% 100%, 40% calc(100% - 9px),
    37.5% 100%, 35% calc(100% - 9px), 32.5% 100%, 30% calc(100% - 9px),
    27.5% 100%, 25% calc(100% - 9px), 22.5% 100%, 20% calc(100% - 9px),
    17.5% 100%, 15% calc(100% - 9px), 12.5% 100%, 10% calc(100% - 9px),
    7.5% 100%, 5% calc(100% - 9px), 2.5% 100%, 0 calc(100% - 9px));
  text-align: center;
  transition: transform .15s ease;
}
#dropzone:hover .paper, #dropzone.dragover .paper { transform: translateY(-2px); }
#dropzone.dragover .paper { outline: 2px dashed var(--accent); outline-offset: -10px; }
#dropzone:focus-within .paper { outline: 2px solid var(--accent); outline-offset: 2px; }

.paper-head { font-weight: 600; letter-spacing: .28em; font-size: .8rem; color: var(--ink-2); }
.paper-rule { border-top: 1px dashed var(--rule); margin: .8rem 0; }
.paper-line { font-size: .92rem; letter-spacing: .02em; }
.paper-line.big { font-weight: 600; font-size: 1.02rem; margin: .35rem 0; }
.paper-line.dim { color: var(--ink-3); font-size: .8rem; }
.blink { animation: blink 1.1s steps(2) infinite; }
@keyframes blink { 50% { opacity: .35; } }

#message {
  margin: .8rem 0 0;
  padding: .6rem .9rem;
  font-size: .9rem;
  border-left: 3px solid var(--accent);
  background: var(--wash);
}
#message.err { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, var(--paper)); }

/* ---------- stat tiles ---------- */
.stats { display: grid; gap: .9rem; }
.tile {
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: .85rem 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.tile-label { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.tile-value { font-size: 1.45rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile-value.small { font-size: 1rem; text-align: right; overflow-wrap: anywhere; }

/* ---------- charts ---------- */
.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  margin-top: 1.6rem;
}
@media (max-width: 700px) { .charts { grid-template-columns: 1fr; } }
.chart-card {
  margin: 0;
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 1rem 1.2rem 1.2rem;
}
.chart-card figcaption {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-3); margin-bottom: .6rem;
}
.chart svg { display: block; width: 100%; height: auto; }
.chart .bar { cursor: default; }
.chart .grid-line { stroke: var(--rule); stroke-width: 1; }
.chart .baseline { stroke: var(--ink-3); stroke-width: 1; }
.chart text { font-size: 11px; fill: var(--ink-2); }
.chart text.value { fill: var(--ink); font-weight: 500; }

#tooltip {
  position: fixed;
  z-index: 10;
  background: var(--ink);
  color: var(--paper);
  font-family: "IBM Plex Mono", monospace;
  font-size: .78rem;
  padding: .35rem .55rem;
  pointer-events: none;
  white-space: nowrap;
}

/* ---------- ledger table ---------- */
#table-section { margin-top: 1.8rem; }
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: center;
  margin-bottom: .8rem;
  font-size: .85rem;
  color: var(--ink-2);
}
.toolbar input[type="search"] { flex: 1 1 170px; }
input, select, button {
  font: inherit;
  font-size: .9rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: .45rem .6rem;
}
input:focus-visible, select:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
button { cursor: pointer; }
button.primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  font-weight: 600;
  letter-spacing: .03em;
}
button.icon { border: none; background: none; padding: .15rem .35rem; font-size: .95rem; color: var(--ink-2); }
button.icon:hover { color: var(--accent); }
button.icon.delete:hover { color: var(--danger); }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  box-shadow: var(--shadow);
}
th, td { padding: .55rem .75rem; border-bottom: 1px solid var(--rule); text-align: left; font-size: .9rem; }
th { color: var(--ink-3); font-weight: 500; font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.actions { width: 5.2rem; text-align: right; }
tbody tr.data-row { cursor: pointer; }
tbody tr.data-row:hover { background: color-mix(in srgb, var(--wash) 55%, var(--paper)); }
tbody tr.flash { animation: printed .9s ease-out; }
@keyframes printed { from { background: var(--wash); transform: translateY(-4px); } to { background: transparent; } }
tr.raw-row td {
  font-family: "IBM Plex Mono", monospace;
  font-size: .74rem;
  color: var(--ink-2);
  white-space: pre-wrap;
  background: color-mix(in srgb, var(--counter) 45%, var(--paper));
}
tfoot td { border-bottom: none; font-weight: 600; color: var(--ink-2); }
td input, td select { width: 100%; padding: .25rem .4rem; }
td.num input { text-align: right; }
.chip {
  display: inline-block;
  font-size: .74rem;
  padding: .1rem .5rem;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  letter-spacing: .03em;
}

.hint { font-size: .78rem; color: var(--ink-3); margin: .6rem 0 0; }
#empty-state { color: var(--ink-3); text-align: center; margin-top: 2.4rem; font-family: "IBM Plex Mono", monospace; }

@media (max-width: 560px) {
  th:nth-child(3), td:nth-child(3) { display: none; }  /* hide category col */
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}