@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  --bg-app: #07090e;
  --bg-sidebar: #0b0f19;
  --bg-card: rgba(14, 20, 34, 0.7);
  --bg-card-hover: rgba(20, 30, 52, 0.9);
  --bg-elevated: #111827;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-muted: rgba(255, 255, 255, 0.12);
  --border-glow: rgba(56, 189, 248, 0.4);

  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.25);
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.2);
}

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

body {
  background-color: var(--bg-app);
  background-image: 
    radial-gradient(ellipse 60% 40% at 70% -10%, rgba(56, 189, 248, 0.06), transparent 70%),
    radial-gradient(circle at 10% 90%, rgba(139, 92, 246, 0.05), transparent 50%);
  color: var(--text-main);
  font-family: var(--font-sans);
  height: 100vh;
  overflow: hidden;
  display: flex;
}

/* Glass Surface */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

/* Left Sidebar */
.app-sidebar {
  width: 280px;
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 50;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(3, 5, 10, 0.8);
  backdrop-filter: blur(8px);
  z-index: 45;
}

.sidebar-header {
  padding: 24px 20px 20px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-close-sidebar {
  display: none;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
}

.mobile-menu-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

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

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #0284c7 0%, #6366f1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  stroke: #ffffff;
}

.brand-text h1 {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text p {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-weight: 500;
}

/* Server List Navigation in Sidebar */
.sidebar-section {
  padding: 16px 14px 6px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.server-count-badge {
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  font-weight: 600;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  user-select: none;
}

.sidebar-nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.sidebar-nav-item.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--primary);
}

.sidebar-nav-item svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  flex-shrink: 0;
}

.sidebar-server-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.sidebar-server-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.sidebar-server-item.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  color: var(--text-main);
}

.server-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.server-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  flex-shrink: 0;
}

.server-dot.online {
  background: var(--accent-emerald);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.server-item-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.server-item-name {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.server-item-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hub-status-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
}

.hub-status-badge.disconnected {
  background: rgba(244, 63, 94, 0.08);
  border-color: rgba(244, 63, 94, 0.25);
  color: var(--accent-rose);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 10px currentColor;
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.btn-add-server {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(99, 102, 241, 0.15));
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--primary);
  padding: 10px;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.25s ease;
}

.btn-add-server:hover {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(99, 102, 241, 0.25));
  border-color: var(--primary);
  transform: translateY(-1px);
}

/* Main Content Area */
.app-main {
  flex: 1;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.main-header {
  padding: 20px 36px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(7, 9, 14, 0.6);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 30;
}

.page-title-wrap h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.page-title-wrap p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

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

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  color: var(--text-muted);
}

.search-box input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.85rem;
  width: 180px;
}

.search-box svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-dim);
}

/* Main View Body */
.main-body {
  padding: 28px 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1600px;
}

/* Overview Bar */
.overview-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-chip {
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stat-chip:hover {
  transform: translateY(-2px);
  border-color: var(--border-muted);
}

.stat-chip-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-chip-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  font-weight: 700;
}

.stat-chip-value {
  font-size: 1.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.stat-chip-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-chip-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--text-muted);
}

/* Server Cards Grid */
.servers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(440px, 1fr));
  gap: 24px;
}

.server-card {
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.server-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7), 0 0 25px rgba(56, 189, 248, 0.15);
}

.server-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0284c7, #8b5cf6, #ec4899);
  opacity: 0.9;
}

.server-card.offline::before {
  background: var(--accent-rose);
}

.server-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.server-info-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.server-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.server-badge {
  font-size: 0.7rem;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-online {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-offline {
  background: rgba(244, 63, 94, 0.12);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.server-meta-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Metric Bars */
.metrics-bars {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.metric-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

.metric-label {
  color: var(--text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-label svg {
  width: 14px;
  height: 14px;
  stroke: var(--text-dim);
}

.metric-val {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #ffffff;
}

.progress-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.fill-cpu { background: linear-gradient(90deg, #38bdf8, #60a5fa); box-shadow: 0 0 10px rgba(56, 189, 248, 0.4); }
.fill-ram { background: linear-gradient(90deg, #818cf8, #c084fc); box-shadow: 0 0 10px rgba(129, 140, 248, 0.4); }
.fill-disk { background: linear-gradient(90deg, #34d399, #10b981); box-shadow: 0 0 10px rgba(52, 211, 153, 0.4); }
.fill-iowait { background: linear-gradient(90deg, #fbbf24, #f59e0b); box-shadow: 0 0 10px rgba(251, 191, 36, 0.4); }

.warning-fill { background: #f59e0b !important; }
.critical-fill { background: #f43f5e !important; }

/* Mini Charts Sparklines */
.server-charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.chart-card-mini {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 12px;
}

.chart-title-mini {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.chart-title-mini span:last-child {
  color: #fff;
  font-family: var(--font-mono);
}

canvas.sparkline {
  width: 100%;
  height: 44px;
  display: block;
}

/* Key Data Strip */
.data-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  background: rgba(0, 0, 0, 0.25);
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.strip-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.strip-label {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.strip-val {
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #e2e8f0;
}

/* Server Card Footer Actions */
.server-card-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

.btn-action {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 7px 14px;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.btn-action:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-muted);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(3, 5, 10, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  display: none;
  justify-content: center;
  align-items: center;
  padding: 24px;
}

.modal-content {
  width: 100%;
  max-width: 980px;
  max-height: 88vh;
  border-radius: var(--radius-lg);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  padding: 30px;
  position: relative;
  background: #0d1322;
  border: 1px solid var(--border-muted);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}

.modal-header h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.4px;
}

.close-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.15);
}

/* Table Design */
.process-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.process-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.process-table th {
  text-align: left;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.4);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  border-bottom: 1px solid var(--border-subtle);
}

.process-table td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  color: var(--text-main);
}

.process-table tr:hover td {
  background: rgba(56, 189, 248, 0.04);
}

/* Code Snippet Box */
.code-block {
  background: #05070d;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--primary);
  overflow-x: auto;
  position: relative;
  margin: 10px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.copy-button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  margin-left: 10px;
}

.copy-button:hover {
  background: var(--primary);
  color: #000;
  border-color: var(--primary);
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 70px 24px;
  border-radius: var(--radius-lg);
  border: 2px dashed rgba(255, 255, 255, 0.08);
}

.empty-state svg {
  width: 52px;
  height: 52px;
  stroke: var(--text-dim);
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.empty-state p {
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 20px auto;
  font-size: 0.9rem;
}

/* Mobile & Tablet App Responsive Adaptations */
@media (max-width: 900px) {
  body {
    overflow: auto;
    height: auto;
  }

  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 290px;
    height: 100vh;
    transform: translateX(-100%);
    box-shadow: 15px 0 35px rgba(0, 0, 0, 0.7);
  }

  .app-sidebar.open {
    transform: translateX(0);
  }

  .sidebar-backdrop.active {
    display: block;
  }

  .mobile-close-sidebar {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .app-main {
    height: auto;
    overflow-y: visible;
    width: 100%;
  }

  .main-header {
    padding: 14px 18px;
  }

  .page-title-wrap h2 {
    font-size: 1.15rem;
  }

  .page-title-wrap p {
    display: none;
  }

  .search-box {
    padding: 6px 10px;
  }

  .search-box input {
    width: 110px;
  }

  .main-body {
    padding: 16px 16px 32px 16px;
    gap: 18px;
  }

  .overview-bar {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-chip {
    padding: 14px 16px;
  }

  .stat-chip-value {
    font-size: 1.4rem;
  }

  .stat-chip-icon {
    width: 38px;
    height: 38px;
  }

  .servers-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .server-card {
    padding: 18px;
  }

  .modal-content {
    padding: 20px 16px;
    max-height: 92vh;
  }

  .data-strip {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .overview-bar {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .stat-chip-icon {
    display: none;
  }

  .server-charts-row {
    grid-template-columns: 1fr;
  }

  .server-card-header {
    flex-direction: column;
    gap: 10px;
  }
}