/* ============ Receipt Splitter — calm workspace theme ============ */
:root {
  --bg: #f6f4ef;
  --paper: #fffdf8;
  --panel: #ffffff;
  --ink: #2b2620;
  --ink-soft: #6f675c;
  --ink-faint: #a39a8d;
  --line: #e6e0d5;
  --line-strong: #d3cbbd;
  --accent: #b4552d;
  --accent-soft: #f3e2d8;
  --good: #2e7d4f;
  --good-soft: #e2f0e7;
  --warn: #a96a12;
  --warn-soft: #f8ecd7;
  --bad: #b03a2e;
  --bad-soft: #f7e1de;
  --shadow: 0 1px 2px rgba(43,38,32,.05), 0 8px 24px rgba(43,38,32,.06);
  --radius: 14px;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* person palette (assigned cyclically) */
  --p1: #b4552d; --p2: #2e6f8e; --p3: #7a5aa6; --p4: #2e7d4f;
  --p5: #b03a6e; --p6: #8a6d1d; --p7: #4a5aa8; --p8: #68755a;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 500px at 80% -10%, #efe8db 0%, transparent 60%),
    var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.45;
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
code {
  font-family: var(--font-mono); font-size: .82em;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 6px; padding: 1px 5px; white-space: nowrap;
}

/* ---------- header ---------- */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 18px clamp(16px, 4vw, 40px) 6px;
  max-width: 1500px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 30px; }
.brand-text h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(20px, 2.4vw, 27px); margin: 0; letter-spacing: .01em;
}
.tagline { margin: 0; font-size: 12.5px; color: var(--ink-soft); letter-spacing: .04em; }
.header-actions { display: flex; gap: 8px; }

/* ---------- buttons ---------- */
.btn {
  font: inherit; font-size: 13.5px; font-weight: 600;
  border-radius: 10px; border: 1px solid transparent;
  padding: 8px 14px; cursor: pointer; color: var(--ink);
  background: var(--panel); border-color: var(--line-strong);
  transition: transform .06s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover:not(:disabled) { box-shadow: var(--shadow); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .4; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: #a04b26; }
.btn-ghost { background: transparent; border-color: var(--line-strong); }
.btn:focus-visible, input:focus-visible, textarea:focus-visible, [tabindex]:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

/* ---------- workspace grid ---------- */
.workspace {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(360px, 1fr) minmax(300px, 380px);
  gap: 18px;
  padding: 14px clamp(16px, 4vw, 40px) 48px;
  max-width: 1500px; margin: 0 auto;
  align-items: start;
}
.pane {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px; min-width: 0;
}
.pane-head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.pane-head h2 {
  font-family: var(--font-display); font-size: 18px; font-weight: 600; margin: 0;
}
.step-badge {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  font-size: 12.5px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center; flex: none;
}
.pane-sub { font-size: 13px; color: var(--ink-soft); margin: 4px 0 12px; }
.ledger-count { margin-left: auto; font-size: 12px; color: var(--ink-faint); }

/* ---------- input pane ---------- */
.receipt-input {
  width: 100%; min-height: 260px; resize: vertical;
  font-family: var(--font-mono); font-size: 13.5px; line-height: 1.7;
  padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--line-strong); background: var(--paper); color: var(--ink);
}
.receipt-input::placeholder { color: var(--ink-faint); }
.input-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.parse-hints { margin-top: 14px; font-size: 12.5px; color: var(--ink-soft); border-top: 1px dashed var(--line); padding-top: 12px; }
.parse-hints p { margin: 0; }

/* ---------- empty states ---------- */
.empty-state { text-align: center; padding: 34px 12px; color: var(--ink-soft); }
.empty-art { opacity: .9; margin-bottom: 8px; }
.empty-title { font-family: var(--font-display); font-size: 17px; color: var(--ink); margin: 0 0 4px; }
.empty-sub { font-size: 13px; margin: 0 0 16px; }
.empty-people { padding: 20px 8px; }
.empty-people .empty-sub { margin-bottom: 0; }

/* ---------- ledger ---------- */
.ledger-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.ledger-item {
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--paper); padding: 10px 12px;
  transition: border-color .15s ease, background .15s ease;
}
.ledger-item.kind-tax, .ledger-item.kind-tip { background: #fbf7ef; }
.ledger-item.kind-discount { background: #f4f8f4; }
.ledger-item.unassigned { border-color: var(--warn); border-left-width: 3px; }
.ledger-item.line-invalid { border-color: var(--bad); border-left-width: 3px; }

.li-top { display: flex; align-items: center; gap: 8px; }
.li-qty {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft);
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  padding: 1px 6px; flex: none;
}
.li-name {
  flex: 1; min-width: 0; font: inherit; font-size: 14px; font-weight: 500;
  border: 1px solid transparent; border-radius: 7px; padding: 3px 7px;
  background: transparent; color: var(--ink);
}
.li-name:hover { border-color: var(--line); }
.li-name:focus { border-color: var(--accent); background: #fff; outline: none; }
.li-price-wrap { display: flex; align-items: center; gap: 2px; flex: none; }
.li-currency { color: var(--ink-faint); font-size: 13px; }
.li-price {
  width: 76px; text-align: right;
  font-family: var(--font-mono); font-size: 13.5px;
  border: 1px solid transparent; border-radius: 7px; padding: 3px 6px;
  background: transparent; color: var(--ink);
}
.li-price:hover { border-color: var(--line); }
.li-price:focus { border-color: var(--accent); background: #fff; outline: none; }
.li-price.invalid { border-color: var(--bad); background: var(--bad-soft); }
.li-delete {
  flex: none; border: none; background: transparent; cursor: pointer;
  color: var(--ink-faint); font-size: 15px; line-height: 1;
  border-radius: 6px; padding: 4px 6px;
}
.li-delete:hover { color: var(--bad); background: var(--bad-soft); }

.li-bottom { display: flex; align-items: center; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.kind-select {
  font: inherit; font-size: 11.5px; font-weight: 600; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 999px; background: var(--panel);
  padding: 3px 8px; cursor: pointer;
}
.assign-chips { display: flex; gap: 5px; flex-wrap: wrap; align-items: center; }
.chip {
  font: inherit; font-size: 12px; font-weight: 600;
  border-radius: 999px; border: 1.5px solid var(--pc, var(--line-strong));
  background: transparent; color: var(--pc, var(--ink-soft));
  padding: 3px 10px; cursor: pointer;
  transition: background .12s ease, color .12s ease, transform .06s ease;
}
.chip:active { transform: scale(.96); }
.chip.on { background: var(--pc); color: #fff; border-color: var(--pc); }
.chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.assign-hint { font-size: 11.5px; color: var(--warn); font-style: italic; }

.shares-row {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--line);
  font-size: 12px; color: var(--ink-soft);
}
.share-ctl { display: inline-flex; align-items: center; gap: 4px; }
.share-ctl .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--pc); display: inline-block; }
.share-input {
  width: 44px; font-family: var(--font-mono); font-size: 12px; text-align: center;
  border: 1px solid var(--line); border-radius: 6px; padding: 2px 4px; background: #fff;
}
.share-reset { font-size: 11px; color: var(--accent); background: none; border: none; cursor: pointer; text-decoration: underline; padding: 0; }

.btn-add-line { width: 100%; margin-top: 10px; border-style: dashed; color: var(--ink-soft); }

.line-error { font-size: 11.5px; color: var(--bad); margin-top: 6px; }

/* ---------- totals card ---------- */
.totals-card {
  margin-top: 16px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--paper); padding: 12px 14px;
}
.totals-row {
  display: flex; justify-content: space-between; font-size: 13.5px;
  padding: 3px 0; color: var(--ink-soft);
}
.totals-row .mono { color: var(--ink); }
.totals-grand { border-top: 1px solid var(--line); margin-top: 6px; padding-top: 8px; font-weight: 700; color: var(--ink); }
.totals-stated { color: var(--ink-faint); }
.reconcile {
  margin-top: 10px; font-size: 12.5px; font-weight: 600;
  border-radius: 8px; padding: 7px 10px; display: none;
}
.reconcile.show { display: block; }
.reconcile.ok { background: var(--good-soft); color: var(--good); }
.reconcile.warn { background: var(--warn-soft); color: var(--warn); }
.reconcile.bad { background: var(--bad-soft); color: var(--bad); }

/* ---------- people ---------- */
.add-person { display: flex; gap: 8px; margin-bottom: 14px; }
.add-person input {
  flex: 1; min-width: 0; font: inherit; font-size: 14px;
  border: 1px solid var(--line-strong); border-radius: 10px;
  padding: 8px 12px; background: var(--paper); color: var(--ink);
}
.btn-add-person { padding: 8px 16px; font-size: 16px; }

.people-list { display: flex; flex-direction: column; gap: 12px; }
.person-card {
  border: 1px solid var(--line); border-radius: 12px;
  border-top: 3px solid var(--pc, var(--line-strong));
  background: var(--paper); padding: 12px 14px;
}
.person-head { display: flex; align-items: center; gap: 9px; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%; flex: none;
  background: var(--pc); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; letter-spacing: .02em;
}
.person-name { font-weight: 700; font-size: 14.5px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person-remove { border: none; background: none; color: var(--ink-faint); cursor: pointer; font-size: 14px; border-radius: 6px; padding: 3px 6px; }
.person-remove:hover { color: var(--bad); background: var(--bad-soft); }
.person-lines { list-style: none; margin: 10px 0 0; padding: 0; font-size: 12.5px; color: var(--ink-soft); }
.person-lines li { display: flex; justify-content: space-between; gap: 8px; padding: 2px 0; }
.person-lines li span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person-lines .mono { flex: none; }
.person-lines li.pl-extra { color: var(--ink-faint); font-style: italic; }
.person-lines li.pl-adjust { color: var(--ink-soft); }
.person-total {
  display: flex; justify-content: space-between; align-items: baseline;
  border-top: 1px solid var(--line); margin-top: 8px; padding-top: 8px;
  font-weight: 700; font-size: 14px;
}
.person-total .mono { font-size: 16px; color: var(--pc, var(--ink)); }
.person-none { font-size: 12.5px; color: var(--ink-faint); font-style: italic; margin: 8px 0 0; }

.split-explainer { margin-top: 16px; font-size: 12.5px; color: var(--ink-soft); }
.split-explainer summary { cursor: pointer; font-weight: 600; color: var(--ink); }
.split-explainer p { margin: 8px 0 0; }

/* ---------- summary ---------- */
.summary-block { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
.summary-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.summary-head h3 { font-family: var(--font-display); font-size: 15.5px; margin: 0; }
.summary-text {
  font-family: var(--font-mono); font-size: 12px; line-height: 1.65;
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; margin: 0; white-space: pre-wrap; word-break: break-word;
  max-height: 280px; overflow: auto; color: var(--ink);
}

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 20px);
  background: var(--ink); color: #fff; font-size: 13.5px; font-weight: 500;
  border-radius: 10px; padding: 10px 18px; opacity: 0; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease; z-index: 50;
  box-shadow: 0 8px 30px rgba(0,0,0,.25); max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .workspace { grid-template-columns: minmax(280px, 340px) 1fr; }
  .pane-people { grid-column: 1 / -1; }
  .people-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
}
@media (max-width: 720px) {
  .workspace { grid-template-columns: 1fr; padding-bottom: 32px; }
  .app-header { flex-wrap: wrap; }
  .receipt-input { min-height: 180px; }
  .people-list { grid-template-columns: 1fr; }
  .btn { padding: 10px 14px; } /* roomier touch targets */
  .chip { padding: 6px 12px; font-size: 12.5px; }
  .li-price { width: 84px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}