:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --border: #dce1e8;
  --text: #1b2430;
  --muted: #667085;
  --accent: #1f7a4d;
  --accent-soft: #e3f3ea;
  --warn: #b45309;
  --warn-soft: #fdf3e3;
  --danger: #c0392b;
  --ball: #1f7a4d;
  --ball-hit: #c0392b;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 4px 12px rgba(16, 24, 40, .05);
  --radius: 12px;
}
:root[data-theme="dark"] {
  --bg: #0f141b;
  --surface: #171e27;
  --surface-2: #1f2833;
  --border: #2a3542;
  --text: #e6ebf1;
  --muted: #94a3b5;
  --accent: #3ecf8e;
  --accent-soft: #16311f;
  --warn: #f0b45e;
  --warn-soft: #2c2410;
  --danger: #ef6b5c;
  --ball: #2f9e6a;
  --ball-hit: #ef6b5c;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 18px rgba(0, 0, 0, .25);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 20px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 48px; height: 48px; border-radius: 12px; object-fit: cover; display: block; }
.topbar h1 { font-size: 18px; margin: 0; }
.sub { margin: 0; font-size: 12.5px; color: var(--muted); max-width: 52ch; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.lot-picker { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); }
.lot-picker span { text-transform: uppercase; letter-spacing: .04em; }
.icon-btn {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text); cursor: pointer; font-size: 18px;
}
.icon-btn:hover { border-color: var(--accent); }

select, input, button {
  font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 9px; padding: 8px 10px;
}
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 4px; padding: 10px 20px 0; flex-wrap: wrap; }
.tab {
  background: transparent; border: none; border-bottom: 2px solid transparent;
  color: var(--muted); cursor: pointer; padding: 8px 14px; border-radius: 8px 8px 0 0;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { max-width: 1040px; margin: 0 auto; padding: 20px; }
.panel { display: none; }
.panel.active { display: block; animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------- controls ---------- */
.controls {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow);
}
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.controls label span { font-weight: 600; }
.controls input, .controls select { min-width: 140px; }
button.primary {
  background: var(--accent); color: #fff; border-color: transparent; cursor: pointer;
  font-weight: 600; padding: 9px 18px;
}
button.primary:hover { filter: brightness(1.06); }
button.primary:active { transform: translateY(1px); }

.tech-desc { color: var(--muted); font-size: 13.5px; margin: 10px 2px 0; }

/* ---------- lottery summary ---------- */
.lot-summary {
  display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 14px;
  font-size: 13px; color: var(--muted);
}
.lot-summary b { color: var(--text); }

/* ---------- cards / results ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
  margin-top: 16px;
}
.card h2 { margin: 0 0 8px; font-size: 16px; }
.card.note { border-left: 3px solid var(--accent); }
.card.warn { border-left: 3px solid var(--warn); background: var(--warn-soft); }
.muted { color: var(--muted); }

.tech-card { margin-top: 14px; }
.tech-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.tech-head h3 { margin: 0; font-size: 15px; }
.badge {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: .03em;
  padding: 2px 7px; border-radius: 999px; border: 1px solid var(--border);
  color: var(--muted); background: var(--surface-2);
}
.badge.alta { color: var(--accent); border-color: var(--accent); }
.badge.media { color: var(--warn); border-color: var(--warn); }

/* balls */
.balls { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.ball {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; font-size: 15px;
  background: var(--accent-soft); color: var(--accent);
  border: 1.5px solid var(--accent);
}
.ball.hit { background: var(--ball-hit); color: #fff; border-color: var(--ball-hit); }
.ball.big { width: 46px; height: 46px; font-size: 16px; }
.count { font-size: 12.5px; color: var(--muted); }
.hit-note { font-size: 12.5px; }
.hit-note b { color: var(--ball-hit); }

details.steps { margin-top: 8px; }
details.steps summary { cursor: pointer; color: var(--accent); font-size: 13px; }
.steps ol { margin: 8px 0 0; padding-left: 20px; font-size: 13px; color: var(--muted); }
.steps ol li { margin: 2px 0; font-variant-numeric: tabular-nums; }
.aviso { color: var(--warn); font-size: 13px; }

/* convergence table */
table { border-collapse: collapse; width: 100%; font-size: 13.5px; margin-top: 8px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* history rows */
.hist-row {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px; margin-top: 8px; box-shadow: var(--shadow);
}
.hist-meta { min-width: 150px; }
.hist-meta .cc { font-weight: 700; }
.hist-meta .dd { font-size: 12px; color: var(--muted); }
.ball.sm { width: 32px; height: 32px; font-size: 13px; background: var(--surface-2); color: var(--text); border-color: var(--border); }
.hist-extra { font-size: 12px; color: var(--muted); }
.hist-second { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.sep { color: var(--muted); font-size: 12px; }

.pager { display: flex; gap: 8px; align-items: center; justify-content: center; margin-top: 16px; }
.pager button { cursor: pointer; }
.pager button:disabled { opacity: .4; cursor: default; }
.pager .info { font-size: 13px; color: var(--muted); }

.nt-list { margin: 0; padding-left: 18px; }
.nt-list li { margin: 6px 0; font-size: 13.5px; }
.nt-list .ref { color: var(--muted); font-size: 12px; }

.empty { color: var(--muted); padding: 20px; text-align: center; }
.suggest-box {
  margin-top: 16px; padding: 14px 16px; border-radius: var(--radius);
  background: var(--accent-soft); border: 1px solid var(--accent);
}
.suggest-box h3 { margin: 0 0 4px; font-size: 15px; color: var(--accent); }

footer { text-align: center; padding: 24px; color: var(--muted); font-size: 12px; }
footer a { color: var(--accent); text-decoration: none; font-weight: 600; }
footer a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .sub { display: none; }
  .controls label { flex: 1 1 45%; }
  .ball { width: 36px; height: 36px; font-size: 14px; }
}