:root {
  --bg: #f3f5f7;
  --surface: #ffffff;
  --ink: #1a2332;
  --muted: #5c6b7a;
  --line: #d8dee6;
  --accent: #0f6e56;
  --accent-ink: #ffffff;
  --danger: #b42318;
  --warn: #b54708;
  --ok: #027a48;
  --shadow: 0 1px 2px rgba(26, 35, 50, 0.06), 0 8px 24px rgba(26, 35, 50, 0.06);
  --radius: 12px;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d9efe8 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #e8eef5 0%, transparent 50%),
    var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #102033;
  color: #e8eef5;
  padding: 1.4rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.brand {
  padding: 0.4rem 0.6rem;
}
.brand strong {
  display: block;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.brand span {
  color: #9db0c5;
  font-size: 0.82rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.nav a {
  color: #c9d6e4;
  padding: 0.7rem 0.85rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
}
.nav a:hover, .nav a.active {
  background: rgba(255,255,255,0.08);
  color: #fff;
  text-decoration: none;
}

.main {
  padding: 1.5rem clamp(1rem, 3vw, 2rem) 2.5rem;
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.page-head h1 {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: -0.03em;
}
.page-head p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}
.panel h2 {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem 1rem;
}
.span-2 { grid-column: span 2; }

label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
  font-weight: 500;
}
input[type="text"],
input[type="number"],
input[type="password"],
input[type="file"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem 0.75rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
textarea { min-height: 96px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(15, 110, 86, 0.25);
  border-color: var(--accent);
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.6rem 0.95rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: var(--accent-ink);
}
.btn:hover { filter: brightness(1.05); }
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.btn-danger {
  background: #fff;
  color: var(--danger);
  border-color: #f3c4c0;
}
.btn-ghost {
  background: transparent;
  color: #c9d6e4;
  border-color: rgba(255,255,255,0.15);
}

.row-add {
  display: grid;
  grid-template-columns: 90px 1fr 140px auto;
  gap: 0.75rem;
  align-items: end;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
table.data th, table.data td {
  padding: 0.7rem 0.55rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
table.data th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr:hover td { background: #f8fafb; }

.totals {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.totals .metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
}
.metric { color: var(--muted); }
.metric strong { color: var(--ink); display: block; font-size: 1.05rem; }
.metric.saldo strong { color: var(--danger); font-size: 1.25rem; }

.flash-wrap { margin-bottom: 1rem; }
.flash {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  font-weight: 500;
}
.flash.ok { background: #e8f7ef; color: var(--ok); }
.flash.error { background: #fef3f2; color: var(--danger); }

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.login-card {
  width: min(400px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.6rem;
}
.login-card h1 { margin: 0 0 0.35rem; font-size: 1.35rem; }
.login-card p { margin: 0 0 1.2rem; color: var(--muted); }

.empty {
  color: var(--muted);
  padding: 1.2rem 0;
  text-align: center;
}

.file-actions { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.logo-preview {
  max-height: 64px;
  max-width: 180px;
  object-fit: contain;
  margin-top: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.35rem;
  background: #fff;
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
  }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .grid-2, .grid-3, .row-add { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
}