* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #141518;
  --panel: #1c1d21;
  --panel-2: #24262a;
  --text: #dcdee1;
  --muted: #85888f;
  --accent: #6d7a8c;        /* único acento, discreto */
  --ok: #7d9d86;
  --danger: #a97070;
  --line: rgba(255, 255, 255, .07);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: .85rem; }

/* ------------------------------------------------------------------ login */

#login-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  background: var(--bg);
  padding: 20px;
}

.login-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px 28px;
  width: min(350px, 100%);
  text-align: center;
}
.login-icon { font-size: 2rem; margin-bottom: 10px; opacity: .8; }
.login-box h2 { font-size: 1.2rem; font-weight: 700; letter-spacing: -.01em; }
.login-box p { margin-bottom: 20px; }
.login-box input {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 11px 13px;
  color: var(--text);
  font-size: .92rem;
  margin-bottom: 10px;
  outline: none;
}
.login-box input::placeholder { color: var(--muted); }
.login-box input:focus { border-color: var(--accent); }
.login-box button {
  width: 100%;
  background: var(--accent);
  border: none;
  border-radius: 9px;
  padding: 11px;
  color: #121315;
  font-weight: 700;
  font-size: .92rem;
  cursor: pointer;
  margin-top: 4px;
}
.login-box button:hover { filter: brightness(1.12); }
.error { color: var(--danger); font-size: .84rem; margin-top: 12px; min-height: 1em; }

/* ----------------------------------------------------------------- header */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 20px 26px 16px;
  flex-wrap: wrap;
}
.brand { font-size: 1.15rem; font-weight: 700; letter-spacing: -.01em; }
.brand span { color: var(--muted); font-weight: 500; }
.head-right { display: flex; align-items: center; gap: 9px; }
.head-right button {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 8px;
  width: 34px;
  height: 32px;
  font-size: .88rem;
  cursor: pointer;
}
.head-right button:hover { color: var(--text); border-color: rgba(255, 255, 255, .16); }

/* ------------------------------------------------------------------ stats */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
  gap: 10px;
  padding: 0 26px 6px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 15px;
}
.stat-label { color: var(--muted); font-size: .71rem; text-transform: uppercase; letter-spacing: .07em; }
.stat-value { font-size: 1.15rem; font-weight: 700; margin-top: 4px; letter-spacing: -.01em; }
.stat-sub { color: var(--muted); font-size: .75rem; margin-top: 3px; }
.bar { height: 4px; border-radius: 99px; background: var(--panel-2); margin-top: 9px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); border-radius: 99px; }

/* ----------------------------------------------------------------- grupos */

main { padding: 16px 26px 0; }

.group { margin-bottom: 24px; }
.group-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 11px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.group-count {
  font-weight: 500;
  font-size: .75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 1px 8px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 11px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 15px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color .15s;
}
.card:hover { border-color: rgba(255, 255, 255, .16); }
.card.offline { opacity: .62; }

.card-top { display: flex; align-items: flex-start; gap: 11px; }
.card-icon {
  width: 36px; height: 36px; flex: none;
  background: var(--panel-2);
  border-radius: 9px;
  display: grid; place-items: center;
  font-size: 1.05rem;
  opacity: .85;
}
.card-name { font-weight: 600; font-size: .94rem; }
.card-desc { color: var(--muted); font-size: .79rem; margin-top: 2px; }

.dot { width: 7px; height: 7px; border-radius: 50%; flex: none; margin-left: auto; margin-top: 7px; }
.dot.on { background: var(--ok); }
.dot.off { background: var(--danger); }

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  font-size: .72rem;
  color: var(--muted);
}
.chip {
  background: var(--panel-2);
  border-radius: 6px;
  padding: 3px 8px;
}
.chip.on { color: var(--ok); }
.chip.off { color: var(--danger); }

.card-actions { display: flex; gap: 7px; margin-top: auto; }
.card-actions a,
.card-actions button {
  flex: 1;
  text-align: center;
  text-decoration: none;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: .81rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.card-actions a:hover,
.card-actions button:hover { border-color: var(--accent); }
.card-actions a.primary { color: var(--text); }

footer { padding: 8px 26px 30px; text-align: center; }

@media (max-width: 560px) {
  header, .stats, main, footer { padding-left: 15px; padding-right: 15px; }
  .cards { grid-template-columns: 1fr; }
}