@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --paper: #eef3e6;
  --paper-raised: #f7faf1;
  --ink: #1b2a41;
  --ink-soft: #45526b;
  --cash: #146c43;
  --cash-soft: #dcecdf;
  --carbon: #2c5c8a;
  --carbon-soft: #dde9f3;
  --both: #1f8577;
  --both-soft: #d9ece7;
  --stamp: #b23a34;
  --line: #c9c2ac;
  --line-strong: #a89f83;
  --shadow: 0 1px 0 rgba(27, 42, 65, 0.05);
  --radius: 3px;
  --font-mono: 'Space Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --font-body: 'Inter', ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  background-image: radial-gradient(rgba(27, 42, 65, 0.05) 0.6px, transparent 0.6px);
  background-size: 14px 14px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  padding: 40px 16px 80px;
}

::selection {
  background: var(--cash);
  color: var(--paper-raised);
}

a {
  color: var(--carbon);
}

/* ---------- Statement card ---------- */

.statement {
  max-width: 720px;
  margin: 0 auto;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px -30px rgba(27, 42, 65, 0.45);
  position: relative;
  overflow: hidden;
}

.statement::before {
  content: '';
  display: block;
  height: 14px;
  background-image: radial-gradient(circle at 12px 0, var(--paper) 7px, transparent 7.5px);
  background-size: 24px 14px;
  background-repeat: repeat-x;
  background-position: 6px 0;
}

.letterhead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 32px 18px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.letterhead .mark {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
}

.letterhead .mark small {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 2px;
}

.letterhead .doc-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-align: right;
}

.demo-tag {
  display: inline-block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--stamp);
  border: 1px solid var(--stamp);
  border-radius: 2px;
  padding: 1px 6px;
}

/* ---------- Hero / headline ---------- */

.hero {
  position: relative;
  padding: 40px 32px 8px;
}

.hero h1 {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0;
  max-width: 480px;
}

.stamp {
  --stamp-rotate: -9deg;
  position: absolute;
  top: 28px;
  right: 28px;
  width: 132px;
  height: 132px;
  border: 3px solid var(--stamp);
  border-radius: 50%;
  color: var(--stamp);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transform: rotate(var(--stamp-rotate));
  font-family: var(--font-mono);
  mix-blend-mode: multiply;
  opacity: 0.92;
  filter: url(#stamp-grain);
}

.stamp::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid var(--stamp);
  border-radius: 50%;
}

.stamp .stamp-inner {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stamp .stamp-label {
  font-size: 8.5px;
  letter-spacing: 0.14em;
  font-weight: 700;
}

.stamp .stamp-amount {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stamp .stamp-sub {
  font-size: 7.5px;
  letter-spacing: 0.1em;
}

/* ---------- Perforated section divider ---------- */

.tear {
  height: 0;
  border-top: 2px dashed var(--line-strong);
  margin: 28px 32px 0;
  position: relative;
}

.tear::before,
.tear::after {
  content: '';
  position: absolute;
  top: -7px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--line-strong);
}

.tear::before {
  left: -39px;
}

.tear::after {
  right: -39px;
}

/* ---------- Summary ledger ---------- */

.summary {
  padding: 24px 32px 8px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.total-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.total-line .amount {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 34px;
  color: var(--cash);
}

.total-line .visits-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.total-line .visits-count::before {
  content: '·';
  margin-right: 10px;
  color: var(--line-strong);
}

.ledger-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ledger-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: var(--paper);
}

.ledger-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.dot.lunch { background: var(--cash); }
.dot.drinks { background: var(--carbon); }
.dot.both {
  background: linear-gradient(135deg, var(--cash) 50%, var(--carbon) 50%);
}

.ledger-item .calc {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink-soft);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.ledger-item .calc .equals {
  font-weight: 700;
  color: var(--ink);
}

/* ---------- Calendar ---------- */

.calendar-section {
  padding: 24px 32px 8px;
}

.calendar-card {
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper);
  padding: 16px;
}

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.calendar-nav button {
  font-family: var(--font-mono);
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  color: var(--ink);
  font-size: 14px;
  line-height: 1;
}

.calendar-nav button:hover {
  background: var(--cash-soft);
  border-color: var(--cash);
}

.calendar-nav button:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 2px solid var(--carbon);
  outline-offset: 2px;
}

.calendar-nav .month-label {
  min-width: 150px;
  text-align: center;
}

.weekday-row,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.weekday-row {
  margin-bottom: 6px;
}

.weekday-row span {
  font-family: var(--font-mono);
  font-size: 10px;
  text-align: center;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}

.day-cell {
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-raised);
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 4px 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-soft);
  position: relative;
}

.day-cell.empty {
  visibility: hidden;
}

.day-cell.lunch { background: var(--cash-soft); border-color: var(--cash); color: var(--ink); }
.day-cell.drinks { background: var(--carbon-soft); border-color: var(--carbon); color: var(--ink); }
.day-cell.both { background: var(--both-soft); border-color: var(--both); color: var(--ink); }

.day-cell.today {
  box-shadow: inset 0 0 0 2px var(--stamp);
}

.legend {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-soft);
}

.legend .swatch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend .swatch::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}

.legend .swatch.lunch::before { background: var(--cash-soft); border: 1px solid var(--cash); }
.legend .swatch.drinks::before { background: var(--carbon-soft); border: 1px solid var(--carbon); }
.legend .swatch.both::before { background: var(--both-soft); border: 1px solid var(--both); }

/* ---------- Transaction log ---------- */

.log-section {
  padding: 24px 32px 32px;
}

.log-list {
  border-top: 1px solid var(--line);
}

.log-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.log-row .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 3px;
  flex-shrink: 0;
}

.log-row .tag.lunch { background: var(--cash-soft); color: var(--cash); }
.log-row .tag.drinks { background: var(--carbon-soft); color: var(--carbon); }

.log-row .date {
  color: var(--ink-soft);
  font-size: 13px;
  flex: 1;
}

.log-row .amount {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cash);
  font-size: 13.5px;
}

.log-row .actions {
  display: flex;
  gap: 6px;
}

.empty-state {
  padding: 24px 2px;
  color: var(--ink-soft);
  font-size: 14px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}

/* ---------- Buttons & forms (admin) ---------- */

.btn {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  border-radius: 4px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-raised);
  padding: 7px 12px;
  cursor: pointer;
  text-transform: uppercase;
}

.btn:hover {
  background: var(--ink-soft);
}

.btn.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn.secondary:hover {
  border-color: var(--ink);
}

.btn.danger {
  background: transparent;
  color: var(--stamp);
  border-color: var(--stamp);
}

.btn.danger:hover {
  background: var(--stamp);
  color: var(--paper-raised);
}

.btn.small {
  padding: 4px 8px;
  font-size: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.field input,
.field select {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper-raised);
  color: var(--ink);
}

.field input:focus,
.field select:focus {
  border-color: var(--carbon);
}

.type-toggle {
  display: flex;
  gap: 8px;
}

.type-toggle button {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 9px;
  border-radius: 4px;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink-soft);
  cursor: pointer;
}

.type-toggle button.active[data-type='lunch'] {
  background: var(--cash-soft);
  border-color: var(--cash);
  color: var(--cash);
}

.type-toggle button.active[data-type='drinks'] {
  background: var(--carbon-soft);
  border-color: var(--carbon);
  color: var(--carbon);
}

.form-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-row .field {
  flex: 1;
  min-width: 160px;
}

.status-msg {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 4px;
  margin-top: 10px;
}

.status-msg.ok {
  background: var(--cash-soft);
  color: var(--cash);
}

.status-msg.error {
  background: #f6dcda;
  color: var(--stamp);
}

.hidden {
  display: none !important;
}

/* ---------- Admin-specific ---------- */

.admin-gate {
  padding: 60px 32px;
  text-align: center;
}

.admin-gate .lock {
  font-size: 28px;
  margin-bottom: 12px;
}

.admin-gate form {
  max-width: 280px;
  margin: 20px auto 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.admin-section {
  padding: 24px 32px;
}

.admin-section h2 {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.admin-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.admin-toolbar .spacer {
  flex: 1;
}

.import-mode {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
}

.log-row.editing {
  flex-wrap: wrap;
  background: var(--cash-soft);
  border-radius: 4px;
  padding: 12px;
}

.datetime-pair {
  display: flex;
  gap: 6px;
  align-items: center;
}

.dt-date {
  width: 104px;
}

.dt-time {
  width: 84px;
}

.date-pick-btn {
  padding: 4px 8px;
  line-height: 1;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.log-row.editing .dt-date,
.log-row.editing .dt-time {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 7px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--paper-raised);
  color: var(--ink);
}

footer.credit {
  max-width: 720px;
  margin: 18px auto 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

@media (max-width: 560px) {
  body { padding: 20px 10px 60px; }
  .letterhead, .hero, .summary, .calendar-section, .log-section, .admin-section { padding-left: 18px; padding-right: 18px; }
  .ledger-grid { grid-template-columns: 1fr; }
  .stamp { position: static; margin: 18px auto 0; }
  .hero { padding-bottom: 20px; }
  .tear { margin-left: 18px; margin-right: 18px; }
  .tear::before { left: -25px; }
  .tear::after { right: -25px; }
  .day-cell { font-size: 9px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}