.tabs {
  margin-bottom: 28px;
}

.tab-panel[hidden],
.mode-block[hidden] {
  display: none;
}

.mode-switch {
  width: fit-content;
  margin-bottom: 24px;
}

/* Dividir conta */

.bill-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: 32px;
  align-items: start;
}

.bill-inputs,
.mode-block {
  display: grid;
  gap: 22px;
}

.bill-common {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule);
}

.input-lg {
  min-height: 58px;
  font-size: 1.5rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chips button,
.who button {
  min-height: 36px;
  padding: 4px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  font-size: 0.9rem;
  font-weight: 700;
}

.chips button[aria-pressed="true"],
.who button[aria-pressed="true"] {
  color: var(--on-accent);
  background: var(--accent);
}

.check.small {
  min-height: 32px;
  font-size: 0.92rem;
}

.stepper {
  display: grid;
  grid-template-columns: 52px minmax(0, 110px) 52px;
}

.stepper .btn {
  padding: 0;
  font-size: 1.4rem;
  border-color: var(--border);
}

.stepper .btn:first-child {
  border-radius: 999px 0 0 999px;
}

.stepper .btn:last-child {
  border-radius: 0 999px 999px 0;
}

.stepper .input {
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  font-size: 1.25rem;
  text-align: center;
}

.bill-result {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 18px;
}

.result-title {
  font-size: 1.3rem;
}

.summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 0;
  margin: 0;
}

.summary dt {
  color: var(--muted);
}

.summary dd {
  margin: 0;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.summary .total {
  padding-top: 8px;
  border-top: 1px solid var(--rule);
  color: var(--text);
  font-weight: 700;
}

.summary .warn {
  color: var(--danger);
}

.split .hint {
  margin-top: 8px;
}

.share {
  display: grid;
  padding: 16px;
  border-radius: 16px;
  color: var(--on-accent);
  background: var(--accent);
}

.share strong {
  font-size: clamp(2rem, 6vw, 2.6rem);
  line-height: 1.1;
}

.share span {
  font-weight: 600;
}

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

.person-table th,
.person-table td {
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
  text-align: right;
}

.person-table th:first-child {
  max-width: 120px;
  overflow: hidden;
  text-align: left;
  text-overflow: ellipsis;
}

.person-table thead th {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.person-table .strong {
  font-weight: 700;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.person-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.person-list:empty {
  display: none;
}

.person-chip {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding-left: 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-weight: 700;
}

.chip-remove {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  font-size: 1.2rem;
  line-height: 1;
}

.chip-remove:hover {
  color: var(--danger);
  background: var(--danger-soft);
}

.inline-form {
  display: flex;
  gap: 8px;
}

.item-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.item-row {
  display: grid;
  gap: 8px;
  padding: 10px 0 12px;
  border-bottom: 1px solid var(--rule);
}

.item-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px;
}

.item-title {
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.who {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.item-form {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) 76px minmax(0, 1fr);
  gap: 10px;
  align-items: end;
  padding: 16px;
  border: 2px dashed var(--rule);
  border-radius: var(--radius-lg);
}

.item-form .btn {
  grid-column: 1 / -1;
}

.form-error {
  min-height: 1.2em;
  margin: 0;
  color: var(--danger);
  font-weight: 700;
}

/* Calculadora comum */

.calc {
  display: grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  grid-template-areas:
    "screen history"
    "keys history";
  gap: 14px 32px;
  align-items: start;
}

.calc-screen {
  grid-area: screen;
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  text-align: right;
}

.calc-expression {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  outline: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 6vw, 2.2rem);
  text-align: right;
}

.calc-screen:focus-within {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.calc-result {
  min-height: 1.6em;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 1.15rem;
}

.calc-result.error {
  color: var(--danger);
  font-family: var(--font-body);
  font-weight: 700;
}

.calc-keys {
  grid-area: keys;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.key {
  min-height: 60px;
  border: 1px solid var(--rule);
  border-radius: 16px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  transition: background-color 80ms ease;
}

.key:hover {
  background: var(--surface-2);
}

.key:active {
  transform: translateY(1px);
}

.key.fn {
  background: transparent;
}

.key.op {
  background: var(--surface-2);
}

.key.eq {
  grid-column: span 4;
  border-color: var(--accent);
  color: var(--on-accent);
  background: var(--accent);
}

.key.eq:hover {
  background: var(--accent-hover);
}

.calc-history {
  grid-area: history;
}

.history-list {
  display: grid;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.history-list button {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  width: 100%;
  padding: 10px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: transparent;
  text-align: left;
}

.history-list button span {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.history-list button:hover strong {
  text-decoration: underline;
}

.history-list .hint {
  padding: 10px 0;
}

.calc-hint {
  margin-top: 16px;
}

/* Porcentagem */

.pct-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.pct {
  display: grid;
  gap: 14px;
  align-content: start;
}

.pct h2 {
  font-size: 1.25rem;
}

.pct-out {
  display: grid;
  min-height: 64px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

.pct-out strong {
  font-size: 1.8rem;
  line-height: 1.15;
}

.pct-out span {
  color: var(--muted);
}

/* Regra de três */

.rule {
  display: grid;
  gap: 22px;
  max-width: 720px;
}

.rule .seg {
  width: fit-content;
}

.rule-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px 16px;
  align-items: end;
}

.rule-arrow {
  padding-bottom: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.rule-x {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--on-accent);
  background: var(--accent);
  font-size: 1.3rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.rule-explain {
  min-height: 1.5em;
  margin: 0;
  font-family: var(--font-mono);
}

@media (max-width: 900px) {
  .bill-layout {
    grid-template-columns: 1fr;
  }

  .bill-result {
    position: static;
  }

  .calc {
    grid-template-columns: 1fr;
    grid-template-areas:
      "screen"
      "keys"
      "history";
    max-width: 480px;
  }
}

@media (max-width: 640px) {
  .bill-common,
  .pct-grid {
    grid-template-columns: 1fr;
  }

  .mode-switch,
  .rule .seg {
    width: 100%;
  }

  .mode-switch > label {
    flex: 1 0 auto;
  }

  .tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }


  .rule .seg > label {
    flex: 1 1 100%;
  }


  .rule-grid {
    grid-template-columns: 1fr 1fr;
  }

  .rule-arrow {
    display: none;
  }

  .item-form {
    grid-template-columns: 70px minmax(0, 1fr);
  }

  .item-form > .field:first-child {
    grid-column: 1 / -1;
  }

  .key {
    min-height: 56px;
  }
}