/* Split the Bill. Shared tokens (colors, radius, shadow, fonts) come from /shared/tokens.css */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
}

/* Components set display (grid, flex); keep the hidden attribute stronger */
[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.tool {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.split {
  display: grid;
  gap: 1rem;
}

.split-intro {
  display: grid;
  gap: 0.4rem;
}

.split-title {
  margin: 0;
  font-family: var(--font-display);
  text-transform: var(--display-case);
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 800;
  letter-spacing: var(--tracking-display);
}

.card {
  display: grid;
  gap: 1rem;
  min-width: 0;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-title {
  margin: 0;
  font-family: var(--font-display);
  text-transform: var(--display-case);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: var(--tracking-display);
}

.card-hint {
  margin: 0;
  color: var(--text-muted);
}

.sub-title {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── controls ─────────────────────────────────────────────────────────────── */

.field {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
}

.field-label {
  padding: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.field--grow {
  flex: 1 1 12rem;
}

.field--amount {
  flex: 1 1 8rem;
}

.input {
  width: 100%;
  min-width: 0;
  padding: 0.6rem 0.75rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 4px);
}

.input:focus-visible,
.btn:focus-visible,
.segmented-btn:focus-visible,
.icon-btn:focus-visible {
  outline: 2px solid var(--accent-text);
  outline-offset: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.5rem;
  padding: 0.55rem 1rem;
  font: 600 0.9rem/1.2 var(--button-font);
  text-transform: var(--button-case);
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 4px);
  cursor: pointer;
}

.btn:hover {
  border-color: var(--text-muted);
}

.btn--primary {
  color: var(--on-accent);
  background: var(--accent);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.button-row,
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.segmented {
  display: inline-flex;
  padding: 0.2rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
}

.segmented-btn {
  min-height: 2rem;
  padding: 0.3rem 0.8rem;
  font: 600 0.8rem/1 var(--font-sans);
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-radius: calc(var(--radius) - 5px);
  cursor: pointer;
}

.segmented-btn[aria-pressed="true"] {
  color: var(--on-accent);
  background: var(--accent);
}

.form-error {
  margin: 0;
  font-size: 0.9rem;
  color: var(--danger);
}

.inline-form {
  display: flex;
  gap: 0.5rem;
}

/* ── people ───────────────────────────────────────────────────────────────── */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chips:empty {
  display: none;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  max-width: 100%;
  padding: 0.2rem 0.25rem 0.2rem 0.75rem;
  font-size: 0.9rem;
  background: rgba(var(--accent-rgb), 0.12);
  border: 1px solid rgba(var(--accent-rgb), 0.35);
  border-radius: var(--radius-pill);
}

.chip-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  flex: none;
  padding: 0;
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.icon-btn:hover {
  color: var(--danger);
  background: rgba(var(--accent-rgb), 0.12);
}

.icon-btn svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

/* ── expenses ─────────────────────────────────────────────────────────────── */

.expense-form {
  display: grid;
  gap: 0.9rem;
}

.expense-form .btn--primary {
  justify-self: start;
}

.split-fieldset {
  display: grid;
  gap: 0.6rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.shares-hint {
  font-size: 0.85rem;
}

.participants {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.participant {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  min-width: 0;
  padding: 0.45rem 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 4px);
}

.participant label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  cursor: pointer;
}

.participant input[type="checkbox"] {
  width: 1.05rem;
  height: 1.05rem;
  flex: none;
  accent-color: var(--accent);
}

.participant-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.share-input {
  width: 3.5rem;
  flex: none;
  padding: 0.3rem 0.4rem;
  text-align: right;
}

.part-input {
  width: 6.5rem;
  flex: none;
  padding: 0.3rem 0.5rem;
  text-align: right;
}

/* Three split modes share one row; labels may wrap on narrow phones */
.split-fieldset .segmented {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.split-fieldset .segmented-btn {
  padding-inline: 0.4rem;
  line-height: 1.15;
}

.exact-status {
  margin: 0;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.exact-status[data-state="over"] {
  color: var(--danger);
}

.exact-status[data-state="done"] {
  color: var(--success);
}

.expense-list,
.balance-list,
.transfer-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.expense {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.25rem 0.75rem;
  padding: 0.75rem 0.5rem 0.75rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 4px);
}

.expense-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 0.75rem;
  min-width: 0;
}

.expense-what {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.expense-amount,
.transfer-amount,
.settle-total {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.expense-meta {
  grid-column: 1;
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  overflow-wrap: anywhere;
}

.expense .icon-btn {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
}

/* ── settle up ────────────────────────────────────────────────────────────── */

.settle-body {
  display: grid;
  gap: 0.6rem;
}

.settle-total {
  margin: 0;
  font-weight: 600;
}

.transfer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 0.75rem;
  padding: 0.7rem 0.9rem;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  border-radius: calc(var(--radius) - 4px);
}

.transfer-people {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.transfer-arrow {
  color: var(--accent-text);
}

.transfer-amount {
  font-weight: 700;
}

.balance {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 0.75rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.balance-name {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.balance-state {
  color: var(--text-muted);
}

.balance--plus .balance-state {
  color: var(--success);
}

.balance--minus .balance-state {
  color: var(--danger);
}

.action-status {
  flex-basis: 100%;
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.action-status:empty {
  display: none;
}

.import-banner {
  border-color: var(--accent-text);
}

.import-text {
  margin: 0;
  font-weight: 600;
}

@media (max-width: 400px) {
  .tool {
    padding-inline: 0.75rem;
  }

  .card {
    padding: 1rem;
  }
}