/* === Base === */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-card: #1e2130;
  --bg-hover: #252839;
  --border: #2a2d3e;
  --text-primary: #e4e6f0;
  --text-secondary: #8b8fa3;
  --accent: #6c63ff;
  --accent-hover: #5a52e0;
  --green: #10b981;
  --red: #ef4444;
  --yellow: #f59e0b;
  --blue: #3b82f6;
  --cyan: #06b6d4;
  --pink: #ec4899;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

/* === Login Page === */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f1117 0%, #1a1030 50%, #0f1117 100%);
}

.login-container { width: 100%; max-width: 420px; padding: 20px; }

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
}

.login-logo { margin-bottom: 20px; }

.login-card h1 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}

.btn-cmu-login {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
  justify-content: center;
}

.btn-cmu-login:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.login-note {
  color: var(--text-secondary);
  font-size: 12px;
  margin-top: 20px;
}

/* === Dashboard Layout === */
.dashboard {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* === Header === */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left h1 {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-info {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.header-info span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info {
  font-size: 13px;
  color: var(--text-secondary);
}

.btn-monitor {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.5px;
}

.btn-monitor:hover {
  background: #5a52e0;
  box-shadow: 0 2px 12px rgba(108,99,255,0.4);
}

.btn-logout {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logout:hover {
  color: var(--red);
  border-color: var(--red);
}

/* === Server Selector === */
.server-selector-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.server-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  overflow-x: auto;
}

.server-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.server-tab:hover { color: var(--text-primary); background: var(--bg-hover); }

.server-tab.active {
  background: var(--accent);
  color: white;
}

.server-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.server-dot.online { background: var(--green); box-shadow: 0 0 6px var(--green); }
.server-dot.offline { background: var(--red); }

.server-status {
  font-size: 12px;
  color: var(--text-secondary);
  padding-right: 12px;
  white-space: nowrap;
}

/* === Metric Cards === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.2s;
}

.metric-card:hover { border-color: var(--accent); }

.metric-card .label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.metric-card .value {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 4px;
}

.metric-card .sub {
  font-size: 12px;
  color: var(--text-secondary);
}

.metric-card .value.green { color: var(--green); }
.metric-card .value.yellow { color: var(--yellow); }
.metric-card .value.red { color: var(--red); }
.metric-card .value.blue { color: var(--blue); }
.metric-card .value.cyan { color: var(--cyan); }
.metric-card .value.pink { color: var(--pink); }

/* === Progress bar (mini) === */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg-primary);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* === Section === */
.section {
  margin: 24px 0;
}

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

.section-header h2 {
  font-size: 16px;
  font-weight: 600;
}

/* === Time Range Selector === */
.range-selector {
  display: flex;
  gap: 4px;
  background: var(--bg-primary);
  padding: 4px;
  border-radius: 8px;
}

.range-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.range-btn:hover { color: var(--text-primary); }

.range-btn.active {
  background: var(--accent);
  color: white;
}

/* === Charts === */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 16px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.chart-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-secondary);
}

.chart-wrapper {
  position: relative;
  height: 220px;
}

/* === Docker Table === */
.docker-section {
  margin-top: 24px;
}

.docker-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.docker-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.docker-table th {
  background: var(--bg-secondary);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.docker-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.docker-table tr:last-child td { border-bottom: none; }

.docker-table tr:hover td { background: var(--bg-hover); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
}

.status-badge.running {
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
}

.status-badge.exited {
  background: rgba(239, 68, 68, 0.15);
  color: var(--red);
}

.status-badge.paused {
  background: rgba(245, 158, 11, 0.15);
  color: var(--yellow);
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.btn-logs {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logs:hover {
  background: var(--cyan);
  color: var(--bg-primary);
}

/* === Log Viewer Modal === */
.log-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.log-modal.open { display: flex; align-items: center; justify-content: center; }

.log-modal-content {
  width: 90vw;
  height: 80vh;
  max-width: 1200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.log-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.log-modal-header h3 {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.log-modal-header h3::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.log-modal-actions {
  display: flex;
  gap: 8px;
}

.btn-clear {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-close {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-close:hover { background: var(--red); color: white; }

.log-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.log-modal-body pre {
  margin: 0;
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 12px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-primary);
}

/* Scrollbar for log viewer */
.log-modal-body::-webkit-scrollbar { width: 8px; }
.log-modal-body::-webkit-scrollbar-track { background: var(--bg-primary); }
.log-modal-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.log-modal-body::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* === Loading & Empty States === */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-secondary);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

/* === Toast notification === */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  animation: slideIn 0.3s ease;
}

.toast.success { background: var(--green); color: white; }
.toast.error { background: var(--red); color: white; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* === Responsive === */
@media (max-width: 768px) {
  .header { flex-direction: column; gap: 12px; }
  .header-info { flex-wrap: wrap; }
  .charts-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .docker-table-wrapper { overflow-x: auto; }
  .dashboard { padding: 12px; }
}

@media (max-width: 480px) {
  .cards-grid { grid-template-columns: 1fr; }
}