:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #d1d5db;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% 0%, #d9f2ee 0%, var(--bg) 50%);
}

.container {
  width: min(1080px, 96vw);
  margin: 2rem auto 3rem;
}

.page-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}

h1,
h2,
h3 {
  margin: 0 0 0.6rem;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.lang-btn {
  padding: 0.35rem 0.55rem;
  border: 1px solid #9ca3af;
  background: #ffffff;
  color: #374151;
  font-size: 0.82rem;
  line-height: 1;
}

.lang-btn:hover {
  background: #f3f4f6;
}

.lang-btn.active {
  background: #0f766e;
  border-color: #0f766e;
  color: #ffffff;
}

.subhead {
  margin-top: 0;
  color: var(--muted);
}

.credit {
  margin: -0.35rem 0 0.9rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.credit a {
  color: #0f766e;
  text-decoration: none;
}

.credit a:hover {
  text-decoration: underline;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.8rem;
  gap: 1rem;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.field-inline {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.94rem;
}

.field-inline input,
.field-inline select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
}

.rounding-stepper {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.94rem;
}

.rounding-controls {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.rounding-arrow {
  min-width: 2rem;
  padding: 0.35rem 0.45rem;
  line-height: 1;
}

#rounding-display {
  min-width: 3.8rem;
  text-align: center;
  padding: 0.22rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  font-family: "SF Mono", "Cascadia Mono", "Menlo", "Consolas", monospace;
  font-variant-numeric: tabular-nums;
}

#people-count,
#multiplier {
  width: 5rem;
}

#number-style {
  min-width: 7.2rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.94rem;
}

.col-head {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.head-checkbox {
  display: inline-flex;
  align-items: center;
}

.head-checkbox input {
  margin: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem;
  text-align: left;
}

td.center {
  text-align: center;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  min-width: 90px;
  padding: 0.45rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 7px;
}

input.repeat {
  min-width: 4.2rem;
  width: 4.2rem;
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.55rem 0.85rem;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

button.secondary {
  background: #4b5563;
}

button.secondary:hover {
  background: #374151;
}

button.tertiary {
  background: #e5e7eb;
  color: #374151;
  border: 1px solid #cbd5e1;
}

button.tertiary:hover {
  background: #d1d5db;
}

button.compact {
  padding: 0.34rem 0.58rem;
  font-size: 0.8rem;
}

.drag-handle {
  width: 2rem;
  padding: 0.2rem 0;
  background: #e5e7eb;
  color: #111827;
  border: 1px solid var(--line);
  cursor: grab;
  font-weight: 700;
  user-select: none;
  touch-action: none;
}

.drag-handle:hover {
  background: #d1d5db;
}

.drag-handle.inactive,
.drag-handle.inactive:hover {
  background: #f3f4f6;
  color: #9ca3af;
  cursor: not-allowed;
}

tr.dragging {
  opacity: 0.45;
}

.drag-handle.dragging-handle {
  cursor: grabbing;
}

tr.drop-before td {
  border-top: 2px solid var(--accent);
}

tr.drop-after td {
  border-bottom: 2px solid var(--accent);
}

#participants.repeat-disabled .repeat-col,
#participants.extra-pay-disabled .extra-pay-col,
#participants.extra-get-disabled .extra-get-col {
  opacity: 0.55;
}

.actions {
  margin-top: 1rem;
}

.actions-inline {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.result-head h2 {
  margin: 0;
}

.result-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.result-feedback {
  margin: 0.4rem 0 0.15rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.result-feedback.error {
  color: var(--error);
}

.error {
  color: var(--error);
}

#summary,
#balances,
#transfers {
  font-family: "SF Mono", "Cascadia Mono", "Menlo", "Consolas", monospace;
  font-variant-numeric: tabular-nums;
}

/* .hidden moved to bottom with !important */

@media (max-width: 760px) {
  .page-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .toolbar-left,
  .toolbar-right {
    width: 100%;
    justify-content: flex-start;
  }

  th,
  td {
    font-size: 0.9rem;
    padding: 0.45rem;
  }
}

/* PWA, Calculating Warning, and Notice Styles */
.calculating-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.65rem 0.85rem;
  margin: 0.8rem 0;
  border-radius: 8px;
  background: #fef3c7;
  border: 1px solid #f59e0b;
  color: #92400e;
  font-size: 0.92rem;
}

.calculating-text {
  flex: 1;
}

.calculating-timer {
  font-variant-numeric: tabular-nums;
  margin-right: 0.5rem;
  font-size: 0.88rem;
  opacity: 0.9;
}

.calculating-banner button {
  background: #b45309;
  color: #fff;
  border: none;
}

.calculating-banner button:hover {
  background: #92400e;
}

.rounding-notice,
.approximate-notice {
  margin: 0.5rem 0;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  background: #f0fdf4;
  border: 1px solid #86efac;
  color: #166534;
  font-size: 0.86rem;
}

.approximate-notice {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

.offline-badge {
  display: inline-block;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: #6b7280;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-tag-approx {
  color: #b45309;
  font-weight: 600;
  font-size: 0.85em;
  margin-left: 0.35rem;
}

/* Strict hidden utility override */
.hidden,
[hidden],
.calculating-banner.hidden,
.rounding-notice.hidden,
.approximate-notice.hidden,
.offline-badge.hidden,
#single-result-panel.hidden,
#dual-result-panel.hidden,
#error.hidden,
#result.hidden {
  display: none !important;
}