/* ========================================================================
   Contador de Caixa — folha de estilos
   Paleta quase monocromática (preto / cinza / branco). Cor é usada apenas
   com função: verde para entrada, vermelho para retirada.
   ======================================================================== */

:root {
  --ink: #18181b;
  --ink-soft: #52525b;
  --ink-faint: #a1a1aa;

  --surface: #ffffff;
  --bg: #fafafa;
  --border: #e4e4e7;
  --border-soft: #f0f0f2;

  --success: #2f7d54;
  --success-dark: #235f40;
  --success-tint: #eef7f1;
  --success-tint-border: #d7ebdf;

  --danger: #b3413a;
  --danger-dark: #8f322c;
  --danger-tint: #fbeeed;
  --danger-tint-border: #f2d7d4;

  --radius-sm: 6px;
  --radius-md: 10px;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  --gap: clamp(8px, 1.6vh, 16px);
  --pad: clamp(12px, 2vh, 22px);
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
}

button, input, select, textarea {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

* { scrollbar-width: thin; scrollbar-color: var(--ink-faint) transparent; }
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-thumb { background: var(--ink-faint); border-radius: 8px; }
*::-webkit-scrollbar-track { background: transparent; }

.app {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  gap: var(--gap);
}

/* ---------------------------------------------------------------------- *
 * Cabeçalho
 * ---------------------------------------------------------------------- */

.app-header {
  flex-shrink: 0;
}

.app-header__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.app-header__subtitle {
  margin: 2px 0 0;
  font-size: 0.78rem;
  color: var(--ink-faint);
}

/* ---------------------------------------------------------------------- *
 * Layout principal
 * ---------------------------------------------------------------------- */

.layout {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: var(--gap);
}

.panels {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  grid-template-rows: minmax(0, 1fr);
  gap: var(--gap);
  flex: 1;
  min-height: 0;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;            /* se a tela for baixa, o painel rola */
}

.panel__title {
  margin: 0 0 var(--gap);
  padding-bottom: calc(var(--gap) * 0.75);
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink-soft);
  flex-shrink: 0;
}

.panel__title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 var(--gap);
  padding-bottom: calc(var(--gap) * 0.75);
  border-bottom: 1px solid var(--border-soft);
  flex-shrink: 0;
}

.panel__title-row .panel__title {
  margin: 0;
  padding-bottom: 0;
  border-bottom: none;
}

/* ---------------------------------------------------------------------- *
 * Grade de denominações
 * ---------------------------------------------------------------------- */

.denominations {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(var(--gap) * 0.6);
  align-content: start;
  flex: 0 0 auto;              /* nunca encolhe */
}

.denomination {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 9px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.15s ease;
}

.denomination:focus-within {
  border-color: var(--ink);
}

.denomination__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.denomination__label {
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--ink);
  white-space: nowrap;
}

.denomination__input {
  width: 46px;
  padding: 3px 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-align: center;
  font-weight: 600;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.quick-add {
  display: flex;
  gap: 3px;
}

.quick-add__btn {
  flex: 1;
  padding: 3px 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--ink-faint);
  font-size: 0.62rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.quick-add__btn:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

/* ---------------------------------------------------------------------- *
 * Botões
 * ---------------------------------------------------------------------- */

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.btn-block {
  width: 100%;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover {
  background: #000;
}

.btn-success {
  background: var(--success);
  color: #fff;
  flex: 1;
}
.btn-success:hover {
  background: var(--success-dark);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  flex: 1;
}
.btn-danger:hover {
  background: var(--danger-dark);
}

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--ink-soft);
  margin-top: calc(var(--gap) * 0.6);
}
.btn-outline:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.btn-outline.is-copied {
  border-color: var(--success);
  color: var(--success-dark);
  background: var(--success-tint);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--ink-soft);
  margin-top: calc(var(--gap) * 0.6);
}
.btn-ghost:hover {
  background: var(--bg);
}

.btn-icon {
  background: transparent;
  border-color: transparent;
  color: var(--ink-faint);
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 6px;
}
.btn-icon:hover {
  background: var(--bg);
  color: var(--ink);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: calc(var(--gap) * 0.6);
  flex-shrink: 0;
}

/* ---------------------------------------------------------------------- *
 * Histórico
 * ---------------------------------------------------------------------- */

.history {
  overflow-y: auto;
  flex: 1 1 0;
  min-height: 160px;           /* altura mínima garantida */
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 4px;
  scrollbar-gutter: stable;
}

.history__empty {
  color: var(--ink-faint);
  font-size: 0.82rem;
  text-align: center;
  padding: var(--gap) 0;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: var(--surface);
}

.history-item--in {
  background: var(--success-tint);
  border-color: var(--success-tint-border);
}

.history-item--out {
  background: var(--danger-tint);
  border-color: var(--danger-tint-border);
}

.history-item .btn-icon {
  color: var(--ink-faint);
}
.history-item .btn-icon:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--ink);
}

.history-item__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  font-weight: 600;
}

.history-item__amount {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 3px;
  color: var(--ink);
}

.history-item--in .history-item__amount {
  color: var(--success-dark);
}

.history-item--out .history-item__amount {
  color: var(--danger-dark);
}

/* ---------------------------------------------------------------------- *
 * Operações apagadas
 * ---------------------------------------------------------------------- */

.deleted-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  max-height: 320px;
  overflow-y: auto;
}

.deleted-list__empty {
  color: var(--ink-faint);
  font-size: 0.82rem;
  text-align: center;
  padding: var(--gap) 0;
}

.deleted-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: var(--bg);
}

.deleted-item__label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  font-weight: 600;
}

.deleted-item__amount {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 3px;
  color: var(--ink);
}

.deleted-item .btn-outline {
  margin-top: 0;
  width: auto;
  padding: 6px 12px;
  font-size: 0.74rem;
  flex-shrink: 0;
}

/* ---------------------------------------------------------------------- *
 * Rodapé de totais
 * ---------------------------------------------------------------------- */

.summary {
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--ink-soft);
  border-radius: var(--radius-md);
  padding: calc(var(--pad) * 0.65) var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.summary__totals {
  margin: 0;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

.summary__totals span {
  color: var(--ink);
  font-weight: 600;
}

.summary__dot {
  display: inline-block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
  margin: 0 8px;
  opacity: 0.4;
}

.summary__grand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.summary__grand-label {
  color: var(--ink-faint);
  font-size: 0.78rem;
}

.summary__grand-value {
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  letter-spacing: -0.01em;
}

/* ---------------------------------------------------------------------- *
 * Modal
 * ---------------------------------------------------------------------- */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(24, 24, 27, 0.45);
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
}

.modal.is-open {
  display: flex;
}

.modal__panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  width: 400px;
  max-width: 100%;
  max-height: 85vh;
  overflow-y: auto;
}

.modal__title {
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}

.modal__body {
  font-size: 0.85rem;
}

.modal__group-title {
  margin: 0 0 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ink-faint);
}

.modal__group-body {
  margin: 0 0 16px;
  line-height: 1.7;
  font-variant-numeric: tabular-nums;
}

.field-label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.select,
.textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 10px;
  font-size: 0.85rem;
  color: var(--ink);
  margin-bottom: 12px;
}

.textarea {
  height: 110px;
  resize: vertical;
}

/* Atributo hidden sempre vence o display definido pelas classes */
[hidden] {
  display: none !important;
}

/* ---------------------------------------------------------------------- *
 * Responsivo
 * ---------------------------------------------------------------------- */

@media (max-width: 800px) {
  html, body { height: auto; }
  body { overflow: auto; }
  .panels { grid-template-columns: 1fr; grid-template-rows: none; }
  .panel { overflow-y: visible; }
  .denominations { grid-template-columns: repeat(2, 1fr); }
}