:root {
  --bg: #0b1020;
  --bg-soft: #141a33;
  --card: #1a2143;
  --card-hover: #232c55;
  --border: #2a3366;
  --text: #e6e9f4;
  --muted: #8a92b2;
  --accent: #5eead4;
  --accent-2: #60a5fa;
  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #4ade80;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: .85rem; }
.error { color: var(--danger); font-size: .9rem; min-height: 1.1em; margin-top: .5rem; }

/* Login */
.login-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(96,165,250,.15), transparent),
    radial-gradient(900px 500px at 90% 100%, rgba(94,234,212,.12), transparent),
    var(--bg);
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  min-width: 320px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .8rem;
}
.login-card h1 { margin: 0; font-size: 1.5rem; }
.login-card label { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; color: var(--muted); }
.login-card input {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: .6rem .8rem;
  font-size: 1rem;
}
.login-card button {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0b1020;
  font-weight: 600;
  border: 0;
  border-radius: 8px;
  padding: .7rem;
  cursor: pointer;
  margin-top: .5rem;
}

/* Topbar */
.topbar {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  gap: 1.5rem;
}
.brand { font-weight: 700; font-size: 1.1rem; }
.status { display: flex; align-items: center; gap: .6rem; color: var(--muted); font-size: .9rem; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.ok { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.ko { background: var(--danger); }
.actions { margin-left: auto; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: .5rem .9rem;
  cursor: pointer;
}
.btn-ghost:hover { background: var(--card); }

main { padding: 1.5rem; max-width: 1400px; margin: 0 auto; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  box-shadow: var(--shadow);
}
.card-title { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.card-value { font-size: 1.8rem; font-weight: 700; margin-top: .3rem; }
.card-sub { color: var(--muted); font-size: .85rem; }
.card-alert.active {
  border-color: var(--danger);
  box-shadow: 0 0 30px rgba(248,113,113,.25);
}
.card-alert.active .card-value { color: var(--danger); }

/* Panel */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}
.panel h2 { margin: 0 0 1rem; font-size: 1.05rem; }
.panel h3 { margin: .2rem 0 .8rem; font-size: .9rem; color: var(--muted); }
.chart-wrap { position: relative; height: 260px; }
.chart-wrap.small { height: 220px; }

/* Servers grid */
.servers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}
.server-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .9rem 1rem;
}
.server-card-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: .4rem;
}
.server-name { font-weight: 600; }
.server-port { color: var(--muted); font-family: "Fira Code", monospace; font-size: .8rem; }
.server-stats { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem .8rem; margin-top: .5rem; font-size: .85rem; }
.server-stats .label { color: var(--muted); }
.server-stats .dl { color: var(--accent); }
.server-stats .ul { color: var(--accent-2); }
.server-bar { height: 140px; margin-top: .6rem; }

/* Attack layout */
.attack-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 900px) {
  .attack-layout { grid-template-columns: 1fr; }
}

/* Table */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
.table th, .table td {
  text-align: left;
  padding: .55rem .6rem;
  border-bottom: 1px solid var(--border);
}
.table th { color: var(--muted); font-weight: 600; font-size: .75rem; text-transform: uppercase; letter-spacing: .05em; }
.table tr:hover td { background: var(--card-hover); }
.table td.ip { font-family: "Fira Code", monospace; color: var(--danger); font-weight: 600; }
.badge {
  display: inline-block;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: "Fira Code", monospace;
  font-size: .75rem;
  margin-right: 3px;
}
.badge.auto {
  background: rgba(94, 234, 212, .1);
  border-color: var(--accent);
  color: var(--accent);
  font-family: inherit;
  font-weight: 600;
  letter-spacing: .05em;
}

.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: .8rem;
}