/* 더치페이 계산기 전용 스타일 */

nav { max-width: 760px; }
main { max-width: 760px; }

.mode-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.mode-tab {
  padding: 0.5rem 1.05rem;
  font-size: 0.88rem;
  font-weight: 500;
  background: var(--surface);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.mode-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.mode-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* 균등 분할 */
.even-mode[hidden] { display: none; }

.even-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.85rem 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.input-group label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-sub);
}

.input-group input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  min-height: 44px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.12);
}

.even-result {
  text-align: center;
  padding: 1.4rem 1.2rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(102, 126, 234, 0.03));
  border: 1px solid var(--primary);
  border-radius: 14px;
}
.even-result[hidden] { display: none; }

.even-share-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 0.4rem;
}

.even-share-value {
  display: block;
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  line-height: 1;
}

.even-meta {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--text-sub);
}

/* 차등 정산 */
.settle-mode[hidden] { display: none; }

.people-list {
  list-style: none;
  margin: 0 0 0.6rem 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.person-row {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) auto minmax(140px, 1.4fr) auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.55rem 0.7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.person-name,
.person-paid {
  padding: 0.5rem 0.6rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  min-width: 0;
  width: 100%;
}
.person-paid {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 600;
}
.person-name:focus,
.person-paid:focus {
  border-color: var(--primary);
}

.paid-label {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-sub);
  white-space: nowrap;
}

.person-remove {
  width: 28px;
  height: 28px;
  font-size: 1rem;
  background: transparent;
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.person-remove:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--error);
  color: var(--error);
}
.person-remove:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-add-person {
  margin-bottom: 1rem;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--surface);
  color: var(--text);
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  width: 100%;
}
.btn-add-person:hover {
  border-style: solid;
  border-color: var(--primary);
  color: var(--primary);
}

.settle-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.55rem;
  margin-bottom: 1rem;
}
.settle-summary[hidden] { display: none; }

.summary-row {
  padding: 0.7rem 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.summary-key {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-sub);
}

.summary-val {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

/* 송금 안내 */
.transfers {
  background: var(--surface);
  border: 1px solid var(--primary);
  border-radius: 12px;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.06), rgba(102, 126, 234, 0.01));
}
.transfers[hidden] { display: none; }

.transfers-title {
  margin: 0 0 0.7rem 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.transfers-count {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--primary);
  padding: 0.15rem 0.55rem;
  background: rgba(102, 126, 234, 0.12);
  border-radius: 999px;
}

.transfers-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.transfer-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  gap: 0.55rem;
  align-items: center;
  padding: 0.55rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.t-from {
  font-weight: 600;
  color: var(--error);
  text-align: right;
  word-break: break-all;
}

.t-arrow {
  color: var(--text-sub);
  font-weight: 700;
}

.t-to {
  font-weight: 600;
  color: var(--success);
  word-break: break-all;
}

.t-amount {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.transfer-empty {
  text-align: center;
  padding: 0.85rem;
  font-size: 0.85rem;
  color: var(--text-sub);
}

.error {
  margin-top: 0.85rem;
  padding: 0.75rem 0.95rem;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  color: var(--error);
  font-size: 0.85rem;
}
.error[hidden] { display: none; }

@media (max-width: 600px) {
  .even-row { grid-template-columns: 1fr; }
  .person-row {
    grid-template-columns: 1fr 32px;
    grid-template-areas:
      "name remove"
      "label label"
      "paid paid";
    gap: 0.35rem;
  }
  .person-name { grid-area: name; }
  .paid-label { grid-area: label; padding-top: 0.2rem; }
  .person-paid { grid-area: paid; }
  .person-remove { grid-area: remove; }
  .settle-summary { grid-template-columns: 1fr 1fr; }
  .even-share-value { font-size: 2.1rem; }
}

@media (max-width: 480px) {
  .transfer-row { grid-template-columns: 1fr; gap: 0.2rem; text-align: left; padding: 0.65rem 0.8rem; }
  .t-from, .t-to { text-align: left; }
}