:root {
  --bg: #0a0e17;
  --bg-card: #111827;
  --bg-hover: #1a2234;
  --border: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --purple: #a855f7;
  --radius: 12px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.hidden { display: none !important; }

.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, #1a2744 0%, var(--bg) 60%);
  padding: 20px;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

.auth-logo { text-align: center; font-size: 48px; margin-bottom: 8px; }
.auth-title { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.auth-subtitle { text-align: center; color: var(--text-muted); font-size: 14px; margin-bottom: 28px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group select {
  width: 100%; padding: 10px 14px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 15px;
}
.form-group input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.password-row { display: flex; gap: 8px; }
.password-row input { flex: 1; }

.btn {
  padding: 10px 20px; border: none; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: white; width: 100%; padding: 12px; font-size: 15px; }
.btn-primary:hover { background: #2563eb; }
.btn-secondary { background: var(--bg-hover); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-danger { background: var(--red); color: white; }

.role-selector { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 16px; }
.role-option {
  padding: 12px 8px; text-align: center; border: 2px solid var(--border);
  border-radius: 10px; cursor: pointer; font-size: 13px;
}
.role-option:hover { border-color: var(--accent); }
.role-option.active { border-color: var(--accent); background: rgba(59,130,246,0.1); }
.role-option .emoji { font-size: 24px; display: block; margin-bottom: 4px; }

.error-msg { color: var(--red); font-size: 13px; margin-top: 8px; text-align: center; }

.app-layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-card); border-right: 1px solid var(--border);
  padding: 20px 0; display: flex; flex-direction: column;
}
.sidebar-brand { padding: 0 20px 20px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.sidebar-brand h1 { font-size: 18px; display: flex; align-items: center; gap: 8px; }
.sidebar-brand .server-info { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.server-status-bar {
  display: flex; align-items: center; gap: 8px;
  margin-top: 10px; padding: 8px 10px;
  background: rgba(34,197,94,0.08); border: 1px solid rgba(34,197,94,0.2);
  border-radius: 8px; font-size: 12px;
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  background: var(--text-muted);
}
.status-dot.online {
  background: var(--green);
  box-shadow: 0 0 8px rgba(34,197,94,0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}
.status-dot.lg { width: 12px; height: 12px; }
.status-text { color: var(--green); font-weight: 600; }
.status-uptime { color: var(--text-muted); margin-left: auto; font-variant-numeric: tabular-nums; }

.master-status-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 20px;
  background: rgba(34,197,94,0.12); border: 1px solid rgba(34,197,94,0.25);
  font-size: 13px;
}
.master-status-pill .status-text { color: var(--green); font-weight: 600; }

.server-hero-card { margin-bottom: 20px; }
.server-hero-inner {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.server-hero-emoji { font-size: 40px; }
.server-hero-name { font-size: 20px; font-weight: 700; }
.server-hero-meta { font-size: 13px; color: var(--text-muted); margin-top: 2px; }
.server-hero-status {
  margin-left: auto; display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; background: rgba(34,197,94,0.08);
  border-radius: 10px; border: 1px solid rgba(34,197,94,0.2);
}
.status-text-lg { font-weight: 700; color: var(--green); font-size: 14px; }
.status-uptime-lg { font-size: 12px; color: var(--text-muted); }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.85); }
}

.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 20px;
  color: var(--text-muted); cursor: pointer; font-size: 14px;
  border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: rgba(59,130,246,0.08); color: var(--accent); border-left-color: var(--accent); }
.nav-item .icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-footer { margin-top: auto; padding: 16px 20px; border-top: 1px solid var(--border); }

.main-content { padding: 24px 32px; overflow-y: auto; max-height: 100vh; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header h2 { font-size: 22px; font-weight: 700; }

.metrics-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.metric-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.metric-card .label { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.metric-card .value { font-size: 28px; font-weight: 700; }
.metric-card .sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.progress-bar { height: 6px; background: var(--border); border-radius: 3px; margin-top: 10px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 3px; transition: width 0.5s; }
.progress-fill.green { background: var(--green); }
.progress-fill.yellow { background: var(--yellow); }
.progress-fill.red { background: var(--red); }

.status-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600;
}
.status-badge.on { background: rgba(34,197,94,0.15); color: var(--green); }
.status-badge.off { background: rgba(239,68,68,0.15); color: var(--red); }
.status-badge.warn { background: rgba(234,179,8,0.15); color: var(--yellow); }

.master-compact-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  padding: 16px 20px;
  margin-bottom: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.master-compact-item .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.master-compact-item .value { font-size: 15px; font-weight: 600; margin-top: 4px; display: block; }
.master-compact-item .value.mono { font-family: monospace; font-size: 13px; word-break: break-all; }
.progress-bar.mini { height: 4px; margin-top: 6px; }

.nav-item.hidden { display: none !important; }

.fleet-card { cursor: pointer; transition: border-color 0.2s, transform 0.15s; }
.fleet-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.fleet-card .fleet-card-actions { margin-top: 12px; }
.fleet-card .fleet-card-actions .btn { pointer-events: auto; }

.action-output {
  margin-top: 16px; background: var(--bg-card); padding: 16px;
  border-radius: 8px; font-size: 12px; max-height: 320px; overflow: auto;
  border: 1px solid var(--border); white-space: pre-wrap;
}

.fleet-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.fleet-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.fleet-card .node-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.fleet-card .node-emoji { font-size: 32px; }
.fleet-card .node-name { font-size: 16px; font-weight: 600; }
.fleet-card .node-ip { font-size: 13px; color: var(--text-muted); }
.fleet-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; font-size: 13px; }

.terminal-container {
  background: #000; border-radius: var(--radius); border: 1px solid var(--border);
  height: calc(100vh - 160px); overflow: hidden;
}
#terminal { width: 100%; height: 100%; padding: 8px; }

.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.data-table th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.actions-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.action-btn {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px; cursor: pointer; text-align: center;
}
.action-btn:hover { border-color: var(--accent); background: var(--bg-hover); }
.action-btn .emoji { font-size: 28px; display: block; margin-bottom: 8px; }
.action-btn .title { font-size: 13px; font-weight: 600; }

.emoji-picker { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.emoji-btn { font-size: 24px; padding: 4px 8px; border: 2px solid transparent; border-radius: 8px; cursor: pointer; background: var(--bg); }
.emoji-btn:hover, .emoji-btn.selected { border-color: var(--accent); background: rgba(59,130,246,0.1); }

.token-display {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; font-family: monospace; font-size: 13px; word-break: break-all; margin: 12px 0;
}

.toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 12px 20px; border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,0.4); z-index: 9999;
}

@media (max-width: 768px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .metrics-grid { grid-template-columns: 1fr; }
}