/* ---------------------------------------------------------------
   Design tokens
---------------------------------------------------------------- */
:root {
  /* Neutrals */
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-hover: #f9fafb;
  --border: #e3e6eb;
  --border-strong: #cdd2db;
  --text: #101828;
  --muted: #66707e;
  --subtle: #98a2b3;

  /* Brand */
  --primary: #0f766e;
  --primary-dark: #0b5a54;
  --primary-soft: #e6f4f2;
  --ring: rgba(15, 118, 110, 0.35);

  /* Semantic */
  --entrada: #16793f;
  --entrada-soft: #e6f6ec;
  --despesa: #b3261e;
  --despesa-soft: #fbeae9;
  --danger: #b3261e;
  --info: #1e4f9c;
  --info-soft: #eaf2ff;

  /* Elevation & shape */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);

  /* Layout */
  --content-width: 1100px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--primary-dark); }

img, svg { display: block; max-width: 100%; }

.icon { width: 1.15em; height: 1.15em; flex-shrink: 0; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------------------------------------------------------------
   Top navigation
---------------------------------------------------------------- */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0.7rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand-mark {
  display: inline-flex;
  color: var(--primary);
}
.brand-mark .icon { width: 1.4rem; height: 1.4rem; }

.main-nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  font-size: 0.92rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: background-color 150ms ease, color 150ms ease;
}
.main-nav a:hover { color: var(--text); background: var(--surface-hover); }
.main-nav a[aria-current="page"] {
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-weight: 600;
}

.user-menu { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }
.user-chip {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--text);
  padding: 0.3rem 0.6rem 0.3rem 0.3rem;
  border-radius: 999px;
  transition: background-color 150ms ease;
}
.user-chip:hover { background: var(--surface-hover); }
.avatar {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.user-name { font-weight: 600; font-size: 0.9rem; }
.icon-button {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.45rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  transition: background-color 150ms ease, color 150ms ease;
}
.icon-button:hover { background: var(--surface-hover); color: var(--danger); }
.icon-button .icon { width: 1.2rem; height: 1.2rem; }

/* ---------------------------------------------------------------
   Page layout
---------------------------------------------------------------- */
.page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1.75rem 1.5rem 4rem;
}

h1 { font-size: 1.6rem; margin: 0 0 0.3rem; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; margin: 2.25rem 0 0.75rem; font-weight: 700; }
.muted { color: var(--muted); }

/* ---------------------------------------------------------------
   Filters & forms
---------------------------------------------------------------- */
.filter-form {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
  margin: 1.25rem 0;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}
.filter-form label { display: flex; flex-direction: column; font-size: 0.83rem; color: var(--muted); gap: 0.3rem; }

/* ---------------------------------------------------------------
   Summary cards
---------------------------------------------------------------- */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}
.summary-cards.compact { margin: 0.5rem 0 1.5rem; }
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  box-shadow: var(--shadow-xs);
}
.summary-card .card-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.summary-card .card-icon .icon { width: 1.2rem; height: 1.2rem; }
.summary-card.entrada .card-icon { background: var(--entrada-soft); color: var(--entrada); }
.summary-card.despesa .card-icon { background: var(--despesa-soft); color: var(--despesa); }
.summary-card.saldo .card-icon { background: var(--primary-soft); color: var(--primary); }
.summary-card .card-body { display: flex; flex-direction: column; gap: 0.3rem; min-width: 0; }
.summary-card .label { font-size: 0.8rem; color: var(--muted); }
.summary-card .value { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.summary-card.entrada .value { color: var(--entrada); }
.summary-card.despesa .value { color: var(--despesa); }
.summary-card.saldo.positivo .value { color: var(--entrada); }
.summary-card.saldo.negativo .value { color: var(--despesa); }

/* ---------------------------------------------------------------
   Cards & generic forms
---------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  box-shadow: var(--shadow-xs);
}
.form-narrow { max-width: 420px; display: flex; flex-direction: column; gap: 1rem; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.1rem;
  align-items: end;
}
.form-grid label.grow { grid-column: span 2; }
.form-grid label, .form-narrow label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.85rem; font-weight: 500; color: var(--muted); }
.form-actions { display: flex; gap: 0.75rem; align-items: center; }

input, select, button { font: inherit; }
input[type="text"], input[type="date"], input[type="password"], select {
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
input:hover, select:hover { border-color: var(--subtle); }
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ring);
}

button, .button-primary, .button-secondary {
  padding: 0.6rem 1.15rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background-color 150ms ease, border-color 150ms ease, transform 100ms ease;
}
button:active, .button-primary:active, .button-secondary:active { transform: translateY(1px); }
:where(button[type="submit"]), .button-primary {
  background: var(--primary);
  color: #fff;
}
:where(button[type="submit"]):hover, .button-primary:hover { background: var(--primary-dark); }
.button-secondary {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.button-secondary:hover { background: var(--surface-hover); border-color: var(--subtle); }

.link-button {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.85rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: background-color 150ms ease, color 150ms ease;
}
.link-button:hover { background: var(--surface-hover); color: var(--text); }
.link-button.danger:hover { background: var(--despesa-soft); color: var(--danger); }
.link-button .icon { width: 1rem; height: 1rem; }
.inline-form { display: inline; }

/* ---------------------------------------------------------------
   Tables
---------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.tx-table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 0.9rem; }
.tx-table th, .tx-table td { padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.tx-table th {
  background: var(--surface-hover);
  font-weight: 600;
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tx-table td { color: var(--text); }
.tx-table td.num, .tx-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tx-table tbody tr:last-child td { border-bottom: none; }
.tx-table tbody tr:hover td { background: var(--surface-hover); }
.tx-table .actions { white-space: nowrap; display: flex; gap: 0.25rem; }
.total-receber { font-weight: 700; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge::before { content: ""; width: 0.4rem; height: 0.4rem; border-radius: 50%; background: currentColor; }
.badge.entrada { background: var(--entrada-soft); color: var(--entrada); }
.badge.despesa { background: var(--despesa-soft); color: var(--despesa); }
.tag-closed { color: var(--subtle); font-size: 0.8rem; font-style: italic; display: inline-flex; align-items: center; gap: 0.3rem; }
.tag-closed .icon { width: 0.95rem; height: 0.95rem; }

/* ---------------------------------------------------------------
   Empty states & alerts
---------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  text-align: center;
  padding: 2.5rem 1.5rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface);
}
.empty-state .icon { width: 1.75rem; height: 1.75rem; color: var(--subtle); }

.alert-error, .alert-info {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
}
.alert-error { background: var(--despesa-soft); color: var(--danger); }
.alert-info { background: var(--info-soft); color: var(--info); }
.alert-error .icon, .alert-info .icon { width: 1.15rem; height: 1.15rem; flex-shrink: 0; }

/* ---------------------------------------------------------------
   Auth pages
---------------------------------------------------------------- */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at 15% 10%, var(--primary-soft), transparent 45%),
    var(--bg);
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  box-shadow: var(--shadow-sm);
}
.auth-mark {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.25rem;
}
.auth-mark .icon { width: 1.5rem; height: 1.5rem; }
.auth-card h1 { font-size: 1.2rem; text-align: center; margin-bottom: 0.25rem; }
.text-center { text-align: center; }
.auth-card label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.88rem; font-weight: 500; color: var(--muted); }

/* ---------------------------------------------------------------
   Bottom nav (mobile only)
---------------------------------------------------------------- */
.bottom-nav {
  display: none;
}

/* ---------------------------------------------------------------
   Responsive
---------------------------------------------------------------- */
@media (max-width: 640px) {
  .form-grid label.grow { grid-column: span 1; }
  .topbar-inner { flex-direction: row; }
  .brand-text { display: none; }
  .main-nav { display: none; }
  .user-menu { margin-left: auto; }
  .user-name { display: none; }
  .page { padding: 1.25rem 1rem calc(5.5rem + env(safe-area-inset-bottom)); }

  .bottom-nav {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    background: var(--surface);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 8px rgba(16, 24, 40, 0.06);
    padding: 0.3rem 0.25rem calc(0.3rem + env(safe-area-inset-bottom));
  }
  .bottom-nav a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    min-height: 3.25rem;
    padding: 0.3rem 0.15rem;
    border-radius: var(--radius-sm);
    color: var(--subtle);
    text-decoration: none;
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.1;
    text-align: center;
  }
  .bottom-nav a .icon { width: 1.5rem; height: 1.5rem; }
  .bottom-nav a[aria-current="page"] { color: var(--primary-dark); }
  .bottom-nav a:active { background: var(--surface-hover); }
}