:root {
  --ink: #16212c;
  --muted: #5b6b7a;
  --line: #d8dfe6;
  --bg: #f5f7f9;
  --card: #ffffff;
  --accent: #0b6fa8;
  --accent-ink: #ffffff;
  --ok: #1c7a4d;
  --error: #b3261e;
  --aviso: #9a6a00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.45;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: var(--ink);
}
.topbar .brand {
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  font-size: 18px;
}
.topnav { display: flex; gap: 14px; flex: 1; }
.topnav a { color: #c6d3de; text-decoration: none; font-size: 15px; }
.topbar-user { color: #8fa2b3; font-size: 14px; }
.topbar-logout { color: #c6d3de; text-decoration: none; font-size: 14px; }

.rol-badge {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef2f5;
  color: var(--muted);
}
.rol-badge.oficial, .rol-badge.suboficial { background: #e3ecf5; color: var(--accent); }

.lista {
  list-style: none;
  margin: 0;
  padding: 0;
}
.lista li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.lista li:last-child { border-bottom: none; }
.lista a.item-link { color: var(--ink); text-decoration: none; font-weight: 600; }
.lista .item-sub { color: var(--muted); font-size: 13px; }

select.select-nadador { width: 100%; }

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

h1 { font-size: 22px; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 24px 0 10px; }
p.sub { color: var(--muted); margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 14px 0 4px;
}
label.first { margin-top: 0; }

input[type=text], input[type=number], input[type=date], input[type=time], select {
  width: 100%;
  padding: 12px 12px;
  font-size: 17px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--accent); }

fieldset {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 4px 14px 14px;
  margin: 18px 0;
}
legend { color: var(--muted); font-size: 13px; padding: 0 6px; }

.btn {
  display: inline-block;
  width: 100%;
  text-align: center;
  padding: 14px 18px;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 17px;
  font-weight: 600;
  margin-top: 18px;
  cursor: pointer;
  text-decoration: none;
}
.btn.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn.danger { background: var(--error); }
.btn.small { width: auto; padding: 8px 14px; font-size: 14px; margin-top: 0; }

.flashes { margin-bottom: 16px; }
.flash {
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 8px;
  font-size: 15px;
}
.flash-ok { background: #e3f5ea; color: var(--ok); }
.flash-error { background: #fbe6e4; color: var(--error); }
.flash-aviso { background: #fdf1dc; color: var(--aviso); }

.codigo {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 28px;
  letter-spacing: 0.12em;
  font-weight: 700;
  text-align: center;
  padding: 14px;
  background: #eef4f8;
  border-radius: 12px;
  margin: 10px 0 18px;
}

table.rejilla { border-collapse: collapse; width: 100%; font-size: 14px; }
table.rejilla th, table.rejilla td {
  border: 1px solid var(--line);
  text-align: center;
  padding: 6px 4px;
}
table.rejilla th { background: #eef2f5; font-weight: 600; }
.celda-ok { background: #e3f5ea; }
.celda-vacia { background: #fbe6e4; color: var(--error); }

.grid-nadadores {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 10px;
}
.nadador-chip {
  display: block;
  text-align: center;
  padding: 14px 4px;
  border-radius: 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}
.nadador-chip.completo { background: #e3f5ea; border-color: var(--ok); }
.nadador-chip.parcial { background: #fdf1dc; border-color: var(--aviso); }
.nadador-chip.vacio { background: #fff; }

.progreso-barra {
  height: 10px;
  background: var(--line);
  border-radius: 6px;
  overflow: hidden;
  margin: 10px 0 4px;
}
.progreso-barra > div { height: 100%; background: var(--accent); }

.linea-sonda-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.linea-sonda-row:last-child { border-bottom: none; }
.linea-sonda-row .ls-label { width: 56px; font-weight: 700; color: var(--muted); }
.linea-sonda-row input[type=number] { flex: 1; }
.linea-sonda-row select { width: 110px; }

.plot { width: 100%; height: 420px; }
.tabs { display: flex; gap: 8px; margin-bottom: 10px; }
.tabbtn {
  background: #eef2f5;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
}
.tabbtn.active { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }

.muted { color: var(--muted); font-size: 14px; }