*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary: #64748b;
  --danger: #ef4444;
  --success: #22c55e;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.07), 0 4px 16px rgba(0,0,0,.06);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 0 0 40px;
}

/* ── Header ── */
.app-header {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 60%, #3b82f6 100%);
  color: #fff;
  padding: 28px 24px;
  margin-bottom: 28px;
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
}
.header-content { display: flex; align-items: center; gap: 16px; max-width: 860px; margin: 0 auto; }
.header-icon { font-size: 2.4rem; line-height: 1; }
.app-header h1 { font-size: 1.45rem; font-weight: 700; letter-spacing: -.3px; }
.app-header p  { font-size: .875rem; opacity: .8; margin-top: 3px; }

/* ── Page wrapper ── */
.page-wrapper { max-width: 860px; margin: 0 auto; padding: 0 16px; }

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 20px;
}
.card-title {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--primary);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}
.subsection-title {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--secondary);
  margin-bottom: 12px;
}

/* ── Grid ── */
.form-grid {
  display: grid;
  gap: 16px;
}
.cols-1 { grid-template-columns: 220px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.col-span-2 { grid-column: span 2; }

/* ── Form elements ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }

label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .4px;
}

input {
  padding: 10px 13px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: .925rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color .18s, box-shadow .18s;
  outline: none;
  width: 100%;
}
input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
input[readonly] {
  background: var(--bg);
  color: var(--text-muted);
  cursor: not-allowed;
}
input::placeholder { color: #b0bac6; }
input[type="date"] { cursor: pointer; }

/* ── Info box ── */
.info-box {
  margin-top: 14px;
  background: #fefce8;
  border: 1px solid #fde047;
  border-left: 4px solid #eab308;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: .82rem;
  color: #713f12;
}

/* ── Soma / Valor Líquido ── */
.soma-display, .valor-liquido-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-radius: 8px;
  margin-top: 14px;
  font-weight: 700;
}
.soma-display {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: .95rem;
}
.valor-liquido-display {
  background: #f0fdf4;
  color: #15803d;
  font-size: 1.05rem;
  border: 2px solid #86efac;
}

/* ── Actions bar ── */
.actions-bar {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
  margin-top: 8px;
  padding-bottom: 20px;
}

.btn {
  padding: 13px 28px;
  border-radius: 10px;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform .12s, box-shadow .12s, background .18s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,.4);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 6px 18px rgba(37,99,235,.5);
}

.btn-secondary {
  background: #fff;
  color: var(--danger);
  border: 1.5px solid #fca5a5;
  box-shadow: 0 2px 8px rgba(239,68,68,.1);
}
.btn-secondary:hover {
  background: #fff5f5;
  border-color: var(--danger);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .cols-2, .cols-3 { grid-template-columns: 1fr; }
  .col-span-2 { grid-column: span 1; }
  .cols-1 { grid-template-columns: 1fr; }
  .app-header h1 { font-size: 1.1rem; }
  .actions-bar { justify-content: stretch; }
  .btn { flex: 1; justify-content: center; }
}