:root {
  --bg: #0b0f19;
  --surface: #151b2b;
  --surface-hover: #1c2438;
  --card: #1e263a;
  --card-selected: #25304a;
  --text: #e8eef7;
  --text-muted: #94a3b8;
  --border: #2a344a;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --success-hover: #16a34a;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 10px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* Login */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at top right, #1e263a 0%, var(--bg) 50%);
}

.login-box {
  background: var(--surface);
  padding: 2.5rem;
  border-radius: var(--radius);
  width: 100%;
  max-width: 380px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.login-box h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  text-align: center;
}

.login-box .subtitle {
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.login-box input {
  width: 100%;
  padding: 0.85rem 1rem;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  transition: border-color 0.15s;
}

.login-box input:focus {
  outline: none;
  border-color: var(--primary);
}

.login-box .btn {
  width: 100%;
  margin-top: 0.5rem;
}

.error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.75rem;
  text-align: center;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(21, 27, 43, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #60a5fa);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.summary {
  display: flex;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.summary-item {
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
}

.summary-item.online { color: var(--success); border-color: rgba(34, 197, 94, 0.3); }
.summary-item.offline { color: var(--danger); border-color: rgba(239, 68, 68, 0.3); }
.summary-item.total { color: var(--text-muted); }

.user {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* System stats */
.system-stats {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.65rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 1rem;
  align-items: center;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.8rem;
}

.stat-gauge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.stat-gauge.stat-load {
  gap: 0.5rem;
  white-space: nowrap;
}

.stat-label {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
  flex-shrink: 0;
}

.stat-bar-wrap {
  flex: 1;
  position: relative;
  height: 16px;
  min-width: 80px;
  background: var(--bg);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.stat-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--success), #4ade80);
  transition: width 0.4s ease;
  min-width: 2px;
}

.stat-bar.warning {
  background: linear-gradient(90deg, var(--warning), #fbbf24);
}

.stat-bar.danger {
  background: linear-gradient(90deg, var(--danger), #f87171);
}

.stat-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  white-space: nowrap;
}

.stat-meta {
  color: var(--text-muted);
  font-size: 0.7rem;
  min-width: 80px;
  text-align: right;
  flex-shrink: 0;
}

.load-avg {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  color: #fff;
  background: var(--primary);
}

.btn:hover { background: var(--primary-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-success { background: var(--success); }
.btn-success:hover { background: var(--success-hover); }

.btn-secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--surface-hover); }

.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.8rem; }

.btn.active { box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4); }

/* Main layout */
.container {
  padding: 1.5rem;
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  height: calc(100vh - 64px);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  overflow-y: auto;
  max-height: 38vh;
  padding-right: 0.5rem;
}

.grid::-webkit-scrollbar { width: 8px; }
.grid::-webkit-scrollbar-track { background: var(--surface); border-radius: 4px; }
.grid::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.grid::-webkit-scrollbar-thumb:hover { background: #3d4b66; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: var(--shadow);
}

.card:hover {
  background: var(--surface-hover);
  transform: translateY(-1px);
}

.card.selected {
  background: var(--card-selected);
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pm-id {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: 'SFMono-Regular', Consolas, monospace;
}

.status {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status.offline, .status.stopped, .status.errored { background: var(--danger); }
.status.launching { background: var(--warning); }

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.metric {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  padding: 0.5rem;
  border-radius: 6px;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.metric-value {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}

.metric-value.online { color: var(--success); }
.metric-value.offline { color: var(--danger); }

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.hint {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Log panel */
.log-panel {
  flex: 1;
  min-height: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}

.log-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.log-title h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.log-actions {
  display: flex;
  gap: 0.5rem;
}

.log-viewer {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  background: #0a0d14;
}

.log-viewer::-webkit-scrollbar { width: 10px; }
.log-viewer::-webkit-scrollbar-track { background: #0a0d14; }
.log-viewer::-webkit-scrollbar-thumb { background: #3d4b66; border-radius: 5px; }
.log-viewer::-webkit-scrollbar-thumb:hover { background: #4d5d7a; }

.log-line {
  display: flex;
  gap: 0.75rem;
  padding: 0.15rem 0;
  border-bottom: 1px solid rgba(42, 52, 74, 0.4);
}

.log-line:last-child { border-bottom: none; }

.log-time {
  color: #64748b;
  flex-shrink: 0;
  min-width: 72px;
}

.log-text {
  color: #cbd5e1;
  white-space: pre-wrap;
  word-break: break-all;
}

.log-line.err .log-text { color: #fca5a5; }
.log-line.out .log-text { color: #cbd5e1; }

.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 2rem;
  font-style: italic;
}

.empty-state.error { color: var(--danger); }

.empty {
  grid-column: 1 / -1;
  color: var(--text-muted);
  text-align: center;
  padding: 3rem;
}

/* Tablets */
@media (max-width: 1024px) {
  .container { padding: 1rem; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

/* Mobile */
@media (max-width: 768px) {
  .topbar {
    flex-wrap: nowrap;
    padding: 0.6rem 1rem;
    gap: 0.75rem;
  }
  .brand h1 { font-size: 1rem; }
  .logo { width: 28px; height: 28px; }
  .summary { display: none; }
  .user { display: none; }
  .system-stats {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    padding: 0.5rem 0.75rem;
  }
  .stat-gauge { gap: 0.5rem; }
  .stat-gauge.stat-load { justify-content: flex-start; }
  .stat-bar-wrap { height: 14px; min-width: 60px; }
  .stat-text { font-size: 0.6rem; }
  .stat-meta { min-width: 70px; font-size: 0.65rem; }
  .load-avg { font-size: 0.7rem; }
  .header-actions {
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
  }
  .container {
    padding: 0.75rem;
    gap: 0.75rem;
    height: auto;
    min-height: calc(100vh - 56px);
  }

  .grid {
    grid-template-columns: 1fr;
    max-height: 42vh;
    gap: 0.6rem;
    padding-right: 0.25rem;
  }

  .card { padding: 0.85rem; }
  .card-title { font-size: 0.9rem; }
  .metrics { grid-template-columns: repeat(3, 1fr); gap: 0.4rem; }
  .metric { padding: 0.4rem; }
  .metric-label { font-size: 0.6rem; }
  .metric-value { font-size: 0.8rem; }
  .card-footer { margin-top: 0.5rem; }
  .hint { display: none; }

  .btn { padding: 0.65rem 1rem; min-height: 40px; }
  .btn-sm { padding: 0.5rem 0.7rem; min-height: 36px; font-size: 0.8rem; }

  .log-panel {
    min-height: 45vh;
    flex: none;
  }

  .log-header {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.6rem 0.75rem;
  }

  .log-title h2 {
    font-size: 0.9rem;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .log-actions {
    width: 100%;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .log-viewer {
    padding: 0.6rem;
    font-size: 0.78rem;
    -webkit-overflow-scrolling: touch;
  }

  .log-line {
    flex-direction: column;
    gap: 0.1rem;
    padding: 0.25rem 0;
  }

  .log-time {
    font-size: 0.7rem;
    min-width: auto;
  }

  .log-text {
    word-break: break-word;
    overflow-wrap: anywhere;
  }

  .login-box {
    padding: 1.75rem;
    margin: 1rem;
  }
}

/* Small phones */
@media (max-width: 380px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .log-actions { gap: 0.35rem; }
  .btn-sm { padding: 0.4rem 0.55rem; font-size: 0.75rem; }
}