:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(18, 18, 30, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(99, 102, 241, 0.3);
  --text-primary: #e8e8ef;
  --text-secondary: #8b8b9e;
  --text-muted: #5a5a6e;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --green: #22c55e;
  --green-glow: rgba(34, 197, 94, 0.15);
  --amber: #f59e0b;
  --red: #ef4444;
  --cyan: #06b6d4;
  --font: 'Inter', -apple-system, system-ui, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

.hidden { display: none !important; }

/* === LOGIN === */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 60%),
              var(--bg-primary);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  backdrop-filter: blur(20px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.login-logo { text-align: center; margin-bottom: 36px; }

.logo-icon {
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 12px;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

.login-logo h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 3px;
}

.input-group { margin-bottom: 16px; }

.input-group input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  transition: all 0.2s;
  outline: none;
}

.input-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.login-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border: none;
  border-radius: 12px;
  color: white;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
  transition: all 0.2s;
}

.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.login-error { color: var(--red); font-size: 13px; text-align: center; margin-top: 12px; }

/* === HEADER === */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 28px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-left { display: flex; align-items: center; gap: 12px; }

.logo-sm { font-size: 24px; color: var(--accent); }

.header h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.env-badge {
  background: var(--accent-glow);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.header-right { display: flex; align-items: center; gap: 20px; }

.pulse-indicator { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--green); }

.pulse-dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
}

.clock { font-size: 13px; color: var(--text-secondary); font-variant-numeric: tabular-nums; }

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-ghost:hover { border-color: var(--text-secondary); color: var(--text-primary); }

/* === STATS ROW === */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 20px 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  backdrop-filter: blur(12px);
  transition: all 0.3s;
}

.stat-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 24px var(--accent-glow);
}

.stat-value {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

.stat-trend { font-size: 11px; margin-top: 8px; }
.stat-trend.up { color: var(--green); }
.stat-trend.down { color: var(--red); }

/* === MAIN GRID === */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 0 28px 28px;
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  backdrop-filter: blur(12px);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.panel-header h2 { font-size: 15px; font-weight: 600; }

.badge {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green { background: var(--green-glow); color: var(--green); }
.badge-blue { background: var(--accent-glow); color: var(--accent); }

/* === MESH GRID === */
.mesh-grid { display: grid; grid-template-columns: 1fr; gap: 8px; }

.mesh-node {
  display: grid;
  grid-template-columns: 12px 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.2s;
}

.mesh-node:hover {
  border-color: var(--border-glow);
  background: rgba(99, 102, 241, 0.04);
}

.node-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.node-info { display: flex; flex-direction: column; }
.node-name { font-size: 13px; font-weight: 600; }
.node-role { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.node-ip { font-size: 12px; color: var(--cyan); font-family: 'SF Mono', monospace; }
.node-workers { font-size: 12px; color: var(--text-secondary); white-space: nowrap; }

/* === CHANNELS === */
.channels-list { display: flex; flex-direction: column; gap: 8px; }

.channel-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.channel-info { display: flex; align-items: center; gap: 10px; }
.channel-icon { font-size: 18px; }
.channel-name { font-size: 13px; font-weight: 500; }
.channel-desc { font-size: 11px; color: var(--text-muted); }
.channel-status { font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 6px; }
.channel-status.active { background: var(--green-glow); color: var(--green); }
.channel-status.pending { background: rgba(245, 158, 11, 0.12); color: var(--amber); }

/* === WORKER BARS === */
.worker-bars { display: flex; flex-direction: column; gap: 10px; }

.worker-bar-row {
  display: grid;
  grid-template-columns: 160px 1fr 40px;
  align-items: center;
  gap: 12px;
}

.worker-bar-label { font-size: 12px; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.worker-bar-track {
  height: 8px;
  background: var(--bg-glass);
  border-radius: 4px;
  overflow: hidden;
}

.worker-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease;
}

.worker-bar-count { font-size: 12px; font-weight: 600; color: var(--text-primary); text-align: right; }

/* === LOG FEED === */
.log-feed {
  max-height: 280px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.log-entry {
  padding: 8px 10px;
  background: var(--bg-glass);
  border-radius: 6px;
  font-size: 11px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  line-height: 1.5;
  color: var(--text-secondary);
}

.log-entry .log-time { color: var(--text-muted); }
.log-entry .log-level-info { color: var(--cyan); }
.log-entry .log-level-ok { color: var(--green); }
.log-entry .log-level-warn { color: var(--amber); }
.log-entry .log-level-err { color: var(--red); }

/* === FOOTER === */
.footer {
  display: flex;
  justify-content: space-between;
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .main-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .stats-row { grid-template-columns: 1fr; }
  .header { flex-direction: column; gap: 8px; }
}