:root {
  --bg: #070b16;
  --bg-2: #0f1730;
  --panel: rgba(18, 28, 54, 0.82);
  --line: rgba(93, 224, 230, 0.18);
  --text: #eef5ff;
  --muted: #93a4c4;
  --primary: #0a2463;
  --secondary: #3e92cc;
  --accent: #2de2e6;
  --success: #2dd881;
  --warning: #ffb86c;
  --danger: #ff6b7a;
  --font: "Space Grotesk", sans-serif;
  --display: "Orbitron", sans-serif;
  --radius: 18px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 146, 204, 0.28), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(45, 226, 230, 0.16), transparent 50%),
    linear-gradient(160deg, #050814, #0b1430 45%, #08101f);
}

.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(45, 226, 230, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 226, 230, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black, transparent 85%);
}

.brand {
  font-family: var(--display);
  letter-spacing: 0.18em;
  color: var(--accent);
}

.login-view {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.login-card {
  width: min(420px, 100%);
  padding: 2.2rem;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(15, 23, 48, 0.95), rgba(8, 14, 30, 0.92));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  animation: rise 0.7s ease both;
}

.login-card h1 {
  font-family: var(--display);
  font-size: 1.45rem;
  margin: 0.6rem 0 0.35rem;
}

.sub, .muted { color: var(--muted); }
.login-card label {
  display: block;
  margin: 1.4rem 0 0.45rem;
  font-size: 0.92rem;
}
.login-card input, .toolbar input, .toolbar select {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  font: inherit;
}
.login-card button, .ghost, .logout, .nav-btn {
  font: inherit;
  cursor: pointer;
  border: 0;
}
.login-card button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #041018;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.login-card button:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(45, 226, 230, 0.25); }
.error { color: var(--danger); margin-top: 0.8rem; }

.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar {
  padding: 1.4rem 1rem;
  border-right: 1px solid var(--line);
  background: rgba(7, 12, 26, 0.8);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.brand-block small { display: block; color: var(--muted); margin-top: 0.25rem; }
.sidebar nav { display: grid; gap: 0.4rem; flex: 1; }
.nav-btn, .ghost, .logout {
  text-align: left;
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
}
.nav-btn.active, .nav-btn:hover, .ghost:hover {
  border-color: var(--line);
  background: rgba(45, 226, 230, 0.08);
}
.logout { color: var(--warning); border: 1px solid rgba(255, 184, 108, 0.25); }

.main { padding: 1.4rem 1.6rem 2.5rem; }
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.2rem;
  animation: rise 0.5s ease both;
}
.topbar h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.35rem;
}
.topbar p { margin: 0.35rem 0 0; color: var(--muted); }
.top-actions { display: flex; gap: 0.7rem; align-items: center; }
.ghost {
  border: 1px solid var(--line) !important;
  background: rgba(255,255,255,0.03) !important;
}

.section { display: none; animation: rise 0.45s ease both; }
.section.active { display: block; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  margin-bottom: 1rem;
}
.kpi {
  padding: 1rem 1.05rem;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease;
}
.kpi:hover { transform: translateY(-3px); }
.kpi .label { color: var(--muted); font-size: 0.85rem; }
.kpi .value {
  margin-top: 0.35rem;
  font-family: var(--display);
  font-size: 1.45rem;
  color: var(--accent);
}

.chart-grid, .split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}
.chart-grid.two { margin-top: 0; }
.panel {
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  min-height: 280px;
}
.panel h3 { margin: 0 0 0.8rem; font-size: 1rem; }
.panel canvas { max-height: 240px; }

.toolbar {
  display: grid;
  grid-template-columns: 1fr 180px auto;
  gap: 0.7rem;
  margin-bottom: 0.9rem;
}
#messages .toolbar { grid-template-columns: 1fr auto; }

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { padding: 0.75rem 0.9rem; text-align: left; border-bottom: 1px solid rgba(255,255,255,0.06); }
th { color: var(--muted); font-weight: 600; position: sticky; top: 0; background: #121c36; }
tr:hover td { background: rgba(45, 226, 230, 0.04); }
.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
}
.badge.on { background: rgba(45, 216, 129, 0.15); color: var(--success); }
.badge.off { background: rgba(255, 107, 122, 0.15); color: var(--danger); }

.pager {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  justify-content: flex-end;
  margin-top: 0.8rem;
}

.feed { display: grid; gap: 0.75rem; }
.msg {
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
}
.msg .meta { color: var(--muted); font-size: 0.82rem; margin-bottom: 0.45rem; }
.msg .q { margin-bottom: 0.35rem; }
.msg .a { color: #b7fff8; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1100px) {
  .kpi-grid, .chart-grid, .split { grid-template-columns: 1fr; }
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 5;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .sidebar nav { display: flex; flex-wrap: wrap; width: 100%; }
}