:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e5e7eb;
  --brand: #0d6b6a;
  --brand-2: #0b9088;
  --accent: #f59e0b;
  --good: #10b981;
  --bad: #ef4444;
  --shadow: 0 4px 14px rgba(15,23,42,.06);
  --radius: 14px;
  --hover-bg: #fafbfc;
  --topbar-bg: #ffffff;
  --pill-bg: #f1f5f9;
  --pill-ink: #475569;
  --table-row-bg: transparent;
  --input-bg: #ffffff;
  --code-bg: #0f172a;
  --code-ink: #e2e8f0;
  --positive-bg: #d1fae5;
  --positive-ink: #065f46;
  --negative-bg: #fee2e2;
  --negative-ink: #991b1b;
  --info-bg: #eff6ff;
  --info-ink: #1e40af;
  --pressed-bg: #ecfdfa;
}

body.theme-dark {
  --bg: #0b1220;
  --card: #111827;
  --ink: #e5e7eb;
  --muted: #94a3b8;
  --line: #1f2937;
  --brand: #14b8a6;
  --brand-2: #2dd4bf;
  --accent: #fbbf24;
  --good: #34d399;
  --bad: #f87171;
  --shadow: 0 4px 14px rgba(0,0,0,0.5);
  --hover-bg: #1a2436;
  --topbar-bg: #0f172a;
  --pill-bg: #1e293b;
  --pill-ink: #cbd5e1;
  --table-row-bg: transparent;
  --input-bg: #0f172a;
  --code-bg: #020617;
  --code-ink: #e2e8f0;
  --positive-bg: #064e3b;
  --positive-ink: #6ee7b7;
  --negative-bg: #7f1d1d;
  --negative-ink: #fecaca;
  --info-bg: #1e3a8a;
  --info-ink: #bfdbfe;
  --pressed-bg: #134e4a;
}

@media (prefers-color-scheme: dark) {
  body.theme-auto {
    --bg: #0b1220;
    --card: #111827;
    --ink: #e5e7eb;
    --muted: #94a3b8;
    --line: #1f2937;
    --brand: #14b8a6;
    --brand-2: #2dd4bf;
    --accent: #fbbf24;
    --good: #34d399;
    --bad: #f87171;
    --shadow: 0 4px 14px rgba(0,0,0,0.5);
    --hover-bg: #1a2436;
    --topbar-bg: #0f172a;
    --pill-bg: #1e293b;
    --pill-ink: #cbd5e1;
    --input-bg: #0f172a;
    --code-bg: #020617;
    --positive-bg: #064e3b;
    --positive-ink: #6ee7b7;
    --negative-bg: #7f1d1d;
    --negative-ink: #fecaca;
    --info-bg: #1e3a8a;
    --info-ink: #bfdbfe;
    --pressed-bg: #134e4a;
  }
}
* { box-sizing: border-box; }
html, body { margin:0; padding:0; background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif; font-size: 15px; }
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px; }

.topbar { background: var(--topbar-bg); border-bottom:1px solid var(--line); position: sticky; top:0; z-index: 10; }
.topbar .wrap { display:flex; align-items:center; gap: 24px; padding: 12px 20px; }
.brand { display:flex; align-items:center; gap:8px; font-weight:700; color:var(--ink); }
.brand-mark { width:32px; height:32px; border-radius:10px; background: linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; display:grid; place-items:center; font-weight:800; }
.brand-tag { margin-left:8px; padding: 2px 8px; border-radius: 999px; background:#fef3c7; color:#b45309; font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.05em; }
.nav { display:flex; gap: 4px; margin-left: 20px; flex:1; }
.nav a { padding: 8px 12px; border-radius: 8px; color: var(--muted); font-weight: 500; }
.nav a:hover { background: var(--bg); text-decoration:none; color: var(--ink); }
.nav a.active { background: var(--pressed-bg); color: var(--brand); }
.user { display:flex; align-items:center; gap:10px; color:var(--muted); font-size: 13px; }
.lang-toggle { display:inline-flex; align-items:center; justify-content:center; width:32px; height:32px; border-radius:8px; border:1px solid var(--line); color:var(--muted); font-weight:700; font-size:11px; letter-spacing:.05em; }
.lang-toggle:hover { background: var(--bg); color: var(--ink); border-color: #cbd5e1; text-decoration:none; }
.auth-lang { position: absolute; top: 16px; right: 20px; }
.auth-lang { display: flex; gap: 6px; }
.auth-lang a { display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:8px; border:1px solid var(--line); background: var(--card); color:var(--muted); font-weight:700; font-size:14px; }
.auth-lang a:hover { background: var(--bg); color: var(--ink); border-color: #cbd5e1; text-decoration:none; }

.footer { margin-top: 48px; padding: 24px 0; color: var(--muted); font-size: 13px; text-align: center; }

.page { padding: 28px 0 48px; }
.h1 { font-size: 28px; font-weight: 700; margin: 0 0 4px; }
.sub { color: var(--muted); margin-bottom: 24px; }

.grid { display:grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 900px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card { background: var(--card); border:1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
.card h3 { margin: 0 0 12px; font-size: 14px; color:var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.card .big { font-size: 28px; font-weight: 700; }
.card .delta { font-size: 13px; margin-top: 4px; }
.delta.up { color: var(--good); }
.delta.down { color: var(--bad); }

.chart-card { padding: 20px; }
.chart-card h3 { text-transform: none; letter-spacing: 0; font-size: 15px; color: var(--ink); font-weight: 600; margin-bottom: 14px; }
.chart-box { position: relative; height: 280px; }
.chart-box.tall { height: 360px; }

.table { width:100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.table th { color:var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.table tbody tr:hover { background: var(--hover-bg); }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.pill { display:inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; background: var(--pill-bg); color: var(--pill-ink); }
.pill.income { background: var(--positive-bg); color: var(--positive-ink); }
.pill.expense { background: var(--negative-bg); color: var(--negative-ink); }
.pill.fijo { background: #e0e7ff; color: #3730a3; }
.pill.variable { background: #fef3c7; color: #92400e; }
.pill.especial { background: #fce7f3; color: #9d174d; }

.btn { display:inline-flex; align-items:center; gap:6px; padding: 9px 16px; border-radius: 10px; font-weight: 600; border: 1px solid var(--line); background: var(--card); color:var(--ink); cursor:pointer; font-size: 14px; }
.btn:hover { border-color: #cbd5e1; text-decoration:none; }
.btn-primary { background: var(--brand); border-color: var(--brand); color:#fff; }
.btn-primary:hover { background: var(--brand-2); border-color: var(--brand-2); color:#fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-danger { color: var(--bad); border-color: #fecaca; }

.input, select, textarea {
  width:100%; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line); font-size: 15px; background: var(--input-bg); color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
textarea { font-family: inherit; min-height: 120px; resize: vertical; }
.input:focus, select:focus, textarea:focus { outline: none; border-color: var(--brand-2); box-shadow: 0 0 0 3px rgba(11,144,136,0.15); }
.field { margin-bottom: 14px; }
.field label { display:block; font-size: 13px; color: var(--muted); margin-bottom: 6px; font-weight: 500; }

/* Login / auth layout */
.auth-shell { min-height: 100vh; display:grid; place-items:center; padding: 24px; background: radial-gradient(1200px 700px at 20% -10%, var(--pressed-bg) 0%, var(--bg) 60%); position: relative; }
.auth-card { width:100%; max-width: 420px; background: var(--card); border:1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 28px; }
.auth-card .brand { justify-content:center; margin-bottom: 8px; font-size: 18px; }
.auth-card h1 { text-align:center; font-size: 22px; margin: 8px 0 4px; }
.auth-card p.sub { text-align:center; margin-bottom: 22px; }
.auth-card .split { display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.auth-card .muted-link { display:block; text-align:center; margin-top: 14px; color: var(--muted); font-size: 13px; }

.alert { padding: 12px 14px; border-radius: 10px; margin-bottom: 14px; font-size: 14px; }
.alert.error { background: var(--negative-bg); color: var(--negative-ink); border:1px solid var(--negative-ink); }
.alert.ok { background: var(--positive-bg); color: var(--positive-ink); border:1px solid var(--positive-ink); }
.alert.info { background: var(--info-bg); color: var(--info-ink); border:1px solid var(--info-ink); }

/* Heatmap */
.heat { display:grid; grid-template-columns: 90px repeat(12, 1fr); gap: 2px; font-size: 11px; }
.heat .hcol { color: var(--muted); text-align:center; padding: 4px 0; }
.heat .hrow { color: var(--muted); padding: 4px 6px; white-space: nowrap; }
.heat .hcell { height: 20px; border-radius: 3px; background: var(--line); }
.heat .hcell.p { background: var(--good); }
.heat .hcell.n { background: #fca5a5; }
.heat .hcell.o { background: #fde68a; }

.filter-bar { display:flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items:center; }
.filter-bar select, .filter-bar input { width: auto; min-width: 140px; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
pre { background: var(--code-bg); color: var(--code-ink); padding: 14px; border-radius: 10px; overflow:auto; }

/* Issue thread */
.issue-card { border-left: 3px solid var(--brand); padding: 14px 16px; margin-bottom: 12px; background: var(--card); border-radius: 0 10px 10px 0; border: 1px solid var(--line); }
.issue-card.resolved { border-left-color: var(--good); opacity: 0.85; }
.issue-card h4 { margin: 0 0 6px; font-size: 16px; }
.issue-meta { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.issue-body { white-space: pre-wrap; color: var(--ink); }
.issue-reply { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); background: var(--pressed-bg); margin: 12px -16px -14px -16px; padding: 12px 16px; border-radius: 0 0 10px 0; }
.issue-reply strong { color: var(--brand); }