:root {
  --bg: #0f0f12;
  --panel: #1a1a20;
  --line: #2b2b34;
  --text: #e8e6e3;
  --muted: #9a97a0;
  --accent: #c0392b;
  --accent-hover: #d9483a;
  --ok: #2ecc71;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--accent-hover); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar { background: var(--panel); border-bottom: 1px solid var(--line); }
.topbar .in {
  max-width: 960px; margin: 0 auto; padding: 14px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.2rem; color: var(--text); letter-spacing: .5px; }
nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
nav form { margin: 0; }

main { max-width: 960px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { margin: 0 0 16px; font-size: 1.6rem; }
h2 { margin: 24px 0 12px; font-size: 1.2rem; }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 24px; max-width: 440px;
}
.card.wide { max-width: none; }

label { display: block; margin: 14px 0 6px; font-size: .9rem; color: var(--muted); }
input[type=text], input[type=password], input[type=email] {
  width: 100%; padding: 10px 12px; border-radius: 6px;
  border: 1px solid var(--line); background: #101014; color: var(--text); font-size: 1rem;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.btn, button {
  display: inline-block; margin-top: 18px; padding: 10px 18px; border: 0; border-radius: 6px;
  background: var(--accent); color: #fff; font-size: 1rem; cursor: pointer;
}
.btn:hover, button:hover { background: var(--accent-hover); text-decoration: none; }
button.link { margin: 0; padding: 0; background: none; color: var(--accent-hover); }

.msg { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: .95rem; }
.msg.error { background: #3a1a1a; border: 1px solid #6b2a2a; }
.msg.ok { background: #16301f; border: 1px solid #245a37; }
.hint { color: var(--muted); font-size: .85rem; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; font-size: .85rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.stat { background: #101014; border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; }
.stat b { display: block; font-size: 1.3rem; }
.stat span { color: var(--muted); font-size: .85rem; }
.online { color: var(--ok); }
.offline { color: var(--muted); }

/* Menú del panel de usuario */
.menu { list-style: none; margin: 0 0 20px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.menu a {
  display: block; padding: 8px 14px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); color: var(--text);
}
.menu a:hover { text-decoration: none; border-color: var(--accent); }
.menu a.current { background: var(--accent); border-color: var(--accent); color: #fff; }

select, input[type=number] {
  width: 100%; padding: 10px 12px; border-radius: 6px;
  border: 1px solid var(--line); background: #101014; color: var(--text); font-size: 1rem;
}
select:focus, input[type=number]:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
label.inline { display: inline; margin: 0; color: var(--text); font-size: 1rem; }
.grid.stats { margin-top: 8px; }
table { margin: 12px 0; }