:root {
  --bg: #07111F;
  --sidebar: #0B1625;
  --card: #101F30;
  --card-border: #1C3047;
  --accent: #00E59B;
  --accent-2: #00B8D9;
  --text: #F3F7FC;
  --text-dim: #91A4B8;
  --danger: #FF5263;
  --warning: #F5B942;

  --radius: 10px;
  --radius-sm: 6px;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --sidebar-width: 248px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--sidebar);
  border-right: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 22px;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 14px;
}

.brand-mark {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: linear-gradient(160deg, var(--accent), var(--accent-2));
  color: #04121C;
  font-weight: 700;
  font-size: 12px;
  display: flex; align-items: center; justify-content: center;
}

.brand-name {
  font-size: 12px;
  line-height: 1.35;
  color: var(--text-dim);
  letter-spacing: .2px;
}
.brand-name strong { color: var(--text); font-size: 13px; }

.nav { display: flex; flex-direction: column; gap: 2px; flex: 1; overflow-y: auto; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: background .15s ease, color .15s ease;
}
.nav-item svg { flex-shrink: 0; }
.nav-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.nav-item.active {
  background: rgba(0,229,155,0.1);
  color: var(--accent);
}

.sidebar-footer {
  border-top: 1px solid var(--card-border);
  padding-top: 12px;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.conn-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-dim); }

.footer-meta { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-dim); opacity: .7; }

.user-chip { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; color: var(--accent-2);
}

/* ---------- Topbar ---------- */
.main { display: flex; flex-direction: column; min-width: 0; }

.topbar {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 24px;
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  background: rgba(7,17,31,0.85);
  backdrop-filter: blur(6px);
  z-index: 5;
}

.menu-toggle {
  display: none;
  background: none; border: none; color: var(--text); cursor: pointer;
}

.page-title { font-size: 17px; font-weight: 600; margin: 0; flex: 1; }

.topbar-right { display: flex; align-items: center; gap: 12px; }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px; font-weight: 500;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text-dim);
}
.pill-mode { color: var(--accent-2); border-color: rgba(0,184,217,0.35); }

.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.dot-offline { background: var(--danger); box-shadow: 0 0 0 3px rgba(255,82,99,0.15); }
.dot-online { background: var(--accent); box-shadow: 0 0 0 3px rgba(0,229,155,0.18); }
.dot-warning { background: var(--warning); box-shadow: 0 0 0 3px rgba(245,185,66,0.18); }

.icon-btn {
  position: relative;
  background: var(--card); border: 1px solid var(--card-border);
  color: var(--text-dim);
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.icon-btn:hover { color: var(--text); }
.badge-dot {
  position: absolute; top: 5px; right: 5px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--danger);
}

.clock { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-dim); min-width: 72px; text-align: right; }

/* ---------- Content ---------- */
.content { padding: 24px; flex: 1; overflow-x: hidden; }

.page { display: none; }
.page.active { display: block; animation: fade-in .18s ease; }

@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) {
  .page.active { animation: none; }
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; z-index: 20; left: 0; top: 0;
    transform: translateX(-100%);
    transition: transform .2s ease;
    width: 240px;
  }
  .sidebar.open { transform: translateX(0); box-shadow: 10px 0 30px rgba(0,0,0,0.4); }
  .menu-toggle { display: flex; }
  .content { padding: 16px; }
}


/* ---------- Owner login ---------- */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: radial-gradient(ellipse at 50% 0%, rgba(0,229,155,.10), transparent 55%), var(--bg); }
.login-card { width: min(100%, 420px); padding: 34px; border: 1px solid var(--card-border); border-radius: 16px; background: rgba(16,31,48,.96); box-shadow: 0 24px 80px rgba(0,0,0,.32); }
.login-brand { display:flex; align-items:center; gap:12px; margin-bottom:30px; }
.login-kicker { color:var(--accent); font:600 10px var(--font-mono); letter-spacing:1.8px; margin:0 0 8px; }
.login-card h1 { margin:0 0 8px; font-size:26px; }
.login-copy { color:var(--text-dim); margin:0 0 24px; }
.login-card label { display:block; color:var(--text-dim); font-size:12px; margin:16px 0 7px; }
.login-card input { width:100%; border:1px solid var(--card-border); border-radius:8px; background:#091625; color:var(--text); padding:12px 13px; font:inherit; outline:none; }
.login-card input:focus { border-color:var(--accent); box-shadow:0 0 0 3px rgba(0,229,155,.10); }
.login-submit { width:100%; margin-top:22px; min-height:44px; }
.login-error { min-height:18px; color:var(--danger); font-size:12px; margin:12px 0 0; }
.login-footnote { color:var(--text-dim); opacity:.75; font-size:10px; text-align:center; margin:18px 0 0; }
.hidden { display:none !important; }