/*══════════════════════════════════════════════════════════
  JARVIS Dashboard v2.0 — Iron-Man HUD Design System
  Spec: dash-design-spec.md | VISION → WAR-MACHINE → ARTEMIS
══════════════════════════════════════════════════════════*/

:root {
  /* ═══ Background (4-level) ═══ */
  --bg-deepest: #0a0e14;
  --bg-deep: #0f1419;
  --bg-panel: #151b23;
  --bg-hover: #1c2430;
  --bg-card: var(--bg-panel);
  --bg-card-hover: var(--bg-hover);
  --bg-input: #0F172A;

  /* ═══ Text (4-level) ═══ */
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --text-disabled: #484f58;
  --text-muted: var(--text-tertiary);

  /* ═══ Status Colors (5 + bg) ═══ */
  --color-success: #3fb950;
  --color-warning: #d29922;
  --color-error: #f85149;
  --color-info: #58a6ff;
  --color-accent: #e3b341;
  --bg-success: #162c19;
  --bg-warning: #2a2111;
  --bg-error: #2c1517;
  --bg-info: #0c1d39;
  --bg-accent: #2a2411;

  /* ═══ Legacy aliases (keep existing code working) ═══ */
  --green: var(--color-success);
  --green-glow: rgba(63,185,80,0.15);
  --red: var(--color-error);
  --red-glow: rgba(248,81,73,0.15);
  --yellow: var(--color-warning);
  --yellow-glow: rgba(210,153,34,0.15);
  --purple: #A78BFA;
  --blue: var(--color-info);
  --accent: #00D4FF;
  --accent-glow: rgba(0,212,255,0.15);
  --primary: var(--brand-blue);
  --surface: var(--bg-panel);
  --text: var(--text-primary);
  --text-dim: var(--text-tertiary);

  /* ═══ Brand ═══ */
  --brand-blue: #1f6feb;
  --brand-blue-hover: #388bfd;
  --brand-blue-glow: rgba(31,111,235,0.4);
  --brand-gold: #e3b341;
  --brand-gold-glow: rgba(227,179,65,0.4);

  /* ═══ Border (3-level) ═══ */
  --border-default: #21262d;
  --border-emphasis: #30363d;
  --border-brand: var(--brand-blue);
  --border: var(--border-default);
  --border-active: var(--border-brand);

  /* ═══ Typography ═══ */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  /* ═══ Spacing (8px grid) ═══ */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;

  /* ═══ Radius ═══ */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* ═══ Animation ═══ */
  --transition-fast: 150ms ease;
  --transition: 0.2s ease;
  --transition-normal: 250ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 350ms ease-out;

  /* ═══ Shadow ═══ */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-glow-blue: 0 0 12px var(--brand-blue-glow);
  --shadow-glow-gold: 0 0 12px var(--brand-gold-glow);
}

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

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

/* Sidebar */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: linear-gradient(180deg, #0F172A 0%, #0A0E1A 100%);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.sidebar-logo h1 {
  font-size: 18px; font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -0.3px;
}

.sidebar-logo .version {
  font-size: 10px; color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: 2px;
}

.sidebar-nav { flex: 1; }

.nav-section {
  padding: 8px 16px;
  font-size: 10px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-top: 8px;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px;
  font-size: 13px; color: var(--text-secondary);
  cursor: pointer; transition: all var(--transition);
  border-left: 2px solid transparent;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--bg-card);
  color: var(--accent);
  border-left-color: var(--accent);
}

.nav-item .nav-icon { font-size: 16px; width: 20px; text-align: center; }

.nav-item .nav-badge {
  margin-left: auto;
  font-size: 10px; padding: 2px 6px;
  border-radius: 8px;
  background: var(--accent-glow);
  color: var(--accent);
  font-family: var(--font-mono);
}

.sidebar-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-size: 11px; color: var(--text-muted);
  margin-top: auto;
}

.sidebar-footer .status-dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; margin-right: 6px;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

/* Main Content */
.main {
  margin-left: 240px;
  flex: 1;
  padding: 24px;
  min-height: 100vh;
}

/* Top Bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.topbar h2 {
  font-size: 22px; font-weight: 700;
  letter-spacing: -0.3px;
}

.topbar-right {
  display: flex; align-items: center; gap: 16px;
  font-size: 12px; color: var(--text-muted);
}

.topbar-right .live {
  display: flex; align-items: center; gap: 6px;
}

.topbar-right .live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 4px var(--green); }
  50% { box-shadow: 0 0 12px var(--green); }
}

/* Panel Container */
.panel { display: none; }
.panel.active { display: block; }

/* Metric Cards Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: linear-gradient(135deg, var(--bg-card), #0F172A);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity var(--transition);
}

.metric-card:hover::before { opacity: 1; }
.metric-card:hover { border-color: var(--border-active); transform: translateY(-1px); }

.metric-card .mc-icon { font-size: 22px; margin-bottom: 10px; }
.metric-card .mc-value {
  font-size: 32px; font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -1px;
  margin-bottom: 4px;
}
.metric-card .mc-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.metric-card .mc-sub { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.metric-card .mc-sparkline { margin-top: 10px; height: 40px; }

/* Chart Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

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

.chart-card.full { grid-column: 1 / -1; }

.chart-card h3 {
  font-size: 14px; font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px;
}

.chart-card h3 .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.chart-body { min-height: 280px; position: relative; }

/* Agent Fleet — Orbit View */
.orbit-container {
  display: flex; align-items: center; justify-content: center;
  min-height: 320px;
}

.orbit-canvas { width: 100%; max-width: 500px; height: 320px; }

/* Session Cards */
.session-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.session-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  transition: all var(--transition);
}

.session-card:hover { border-color: var(--border-active); }

.session-card .sc-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}

.session-card .sc-name {
  font-size: 13px; font-weight: 600;
  font-family: var(--font-mono);
  color: var(--accent);
}

.session-card .sc-badge {
  font-size: 10px; padding: 2px 8px;
  border-radius: 8px;
  font-weight: 500;
}

.badge-active { background: var(--green-glow); color: var(--green); }
.badge-idle { background: var(--yellow-glow); color: var(--yellow); }
.badge-new { background: var(--accent-glow); color: var(--accent); }

.session-card .sc-info {
  font-size: 11px; color: var(--text-muted);
  line-height: 1.6;
}

.session-card .sc-meta {
  display: flex; gap: 12px;
  margin-top: 8px;
  font-size: 11px; color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Fuel Gauge */
.fuel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.fuel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}

.fuel-card .fc-ring {
  width: 100px; height: 100px;
  margin: 0 auto 10px;
}

.fuel-card .fc-name {
  font-size: 13px; font-weight: 600;
  margin-bottom: 4px;
}

.fuel-card .fc-cost {
  font-size: 20px; font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
}

.fuel-card .fc-pct {
  font-size: 12px; color: var(--text-muted);
  margin-top: 4px;
}

/* Service Grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

.service-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 12px;
}

.service-item .s-dot {
  width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
}

.s-dot.running { background: var(--green); box-shadow: 0 0 4px var(--green); }
.s-dot.stopped { background: var(--red); }

.service-item .s-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.service-item .s-pid { color: var(--text-muted); font-family: var(--font-mono); font-size: 10px; }

/* Status Colors */
.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-yellow { color: var(--yellow); }
.text-blue { color: var(--blue); }
.text-purple { color: var(--purple); }
.text-accent { color: var(--accent); }

/* Loading */
.loading {
  display: flex; align-items: center; justify-content: center;
  height: 200px;
  font-size: 14px; color: var(--text-muted);
}

.loading::after {
  content: '';
  display: inline-block; width: 16px; height: 16px;
  margin-left: 10px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Alert Banner */
.alert-banner {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  font-size: 13px;
  display: flex; align-items: center; gap: 10px;
}

.alert-banner.warn {
  background: var(--yellow-glow);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--yellow);
}

.alert-banner.error {
  background: var(--red-glow);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--red);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #334155; }

/* ---- Theme: Light ---- */
[data-theme="light"] {
  --bg-deep: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-input: #F1F5F9;
  --border: #E2E8F0;
  --border-active: #3B82F6;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --accent: #0284C7;
  --accent-glow: rgba(2, 132, 199, 0.1);
  --green: #16A34A;
  --green-glow: rgba(22, 163, 74, 0.1);
  --red: #DC2626;
  --red-glow: rgba(220, 38, 38, 0.1);
  --yellow: #D97706;
  --yellow-glow: rgba(217, 119, 6, 0.1);
  --purple: #7C3AED;
  --blue: #2563EB;
}
[data-theme="light"] .sidebar { background: linear-gradient(180deg, #F1F5F9 0%, #F8FAFC 100%); }
[data-theme="light"] .metric-card { background: linear-gradient(135deg, #FFFFFF, #F8FAFC); }
[data-theme="light"] .chart-card { background: #FFFFFF; }
[data-theme="light"] .fuel-card { background: #FFFFFF; }
[data-theme="light"] .session-card { background: #FFFFFF; }
[data-theme="light"] .service-item { background: #F1F5F9; }
[data-theme="light"] .alert-banner.warn { background: #FEF3C7; border-color: rgba(217, 119, 6, 0.3); }
[data-theme="light"] .alert-banner.error { background: #FEE2E2; border-color: rgba(220, 38, 38, 0.3); }
[data-theme="light"] .command-palette { background: rgba(255,255,255,0.95); }

/* ---- Theme: Glass (glassmorphism) ---- */
[data-theme="glass"] {
  --bg-deep: #060B14;
  --bg-card: rgba(17, 24, 39, 0.6);
  --bg-card-hover: rgba(26, 35, 50, 0.7);
  --bg-input: rgba(15, 23, 42, 0.5);
  --border: rgba(30, 41, 59, 0.5);
  --border-active: rgba(59, 130, 246, 0.6);
}
[data-theme="glass"] .sidebar {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid rgba(30, 41, 59, 0.4);
}
[data-theme="glass"] .metric-card {
  background: rgba(17, 24, 39, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(30, 41, 59, 0.3);
}
[data-theme="glass"] .chart-card {
  background: rgba(17, 24, 39, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(30, 41, 59, 0.3);
}
[data-theme="glass"] .fuel-card {
  background: rgba(17, 24, 39, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
[data-theme="glass"] .session-card {
  background: rgba(17, 24, 39, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
[data-theme="glass"] .service-item {
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ---- Theme toggle ---- */
.theme-toggle {
  display: flex; align-items: center; gap: 4px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.theme-toggle button {
  background: none; border: none;
  width: 28px; height: 28px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  color: var(--text-muted);
}
.theme-toggle button.active { background: var(--accent); color: #fff; }
.theme-toggle button:hover:not(.active) { color: var(--text-secondary); }

/* ---- CMD+K Command Palette ---- */
.command-palette-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 999;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.command-palette-overlay.open { display: flex; }

.command-palette {
  width: 560px;
  max-width: 90vw;
  background: rgba(15, 23, 42, 0.97);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.1);
  overflow: hidden;
}
.command-palette-input {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.command-palette-input .cp-icon { font-size: 16px; }
.command-palette-input input {
  flex: 1;
  background: none; border: none;
  color: var(--text-primary);
  font-size: 15px; font-family: var(--font-sans);
  outline: none;
}
.command-palette-input input::placeholder { color: var(--text-muted); }
.command-palette-input .cp-hint {
  font-size: 10px; padding: 2px 6px;
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text-muted);
  font-family: var(--font-mono);
}
.command-palette-results { max-height: 360px; overflow-y: auto; padding: 6px; }
.command-palette-results .cp-section {
  font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 8px 12px 4px;
}
.command-palette-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px; color: var(--text-secondary);
  transition: all 0.1s ease;
}
.command-palette-item.selected,
.command-palette-item:hover {
  background: var(--accent-glow);
  color: var(--text-primary);
}
.command-palette-item .cp-item-icon { width: 20px; text-align: center; font-size: 14px; }
.command-palette-item .cp-item-title { flex: 1; }
.command-palette-item .cp-item-shortcut {
  font-size: 10px; color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ---- Orbit tooltip ---- */
.orbit-tooltip {
  position: absolute;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 18px;
  pointer-events: none;
  z-index: 20;
  min-width: 200px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
}
.orbit-tooltip.visible { display: block; }
.orbit-tooltip .ot-name { font-size: 14px; font-weight: 700; color: var(--accent); margin-bottom: 6px; }
.orbit-tooltip .ot-row { font-size: 11px; color: var(--text-secondary); margin-bottom: 3px; display: flex; justify-content: space-between; gap: 16px; }
.orbit-tooltip .ot-row .ot-label { color: var(--text-muted); }
.orbit-tooltip .ot-row .ot-value { font-family: var(--font-mono); }

/* ---- Cost table enhancements ---- */
.cost-summary-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.cost-summary-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
}
.cost-summary-item .cs-value {
  font-size: 24px; font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
}
.cost-summary-item .cs-label {
  font-size: 11px; color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.cost-bar-wrapper {
  height: 4px; background: var(--bg-input);
  border-radius: 2px; margin-top: 6px;
  overflow: hidden;
}
.cost-bar-fill {
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  transition: width 0.6s ease;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar .nav-item span:not(.nav-icon) { display: none; }
  .sidebar .nav-section { display: none; }
  .sidebar-logo h1 { font-size: 14px; }
  .main { margin-left: 60px; }
  .charts-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════
   JARVIS Dashboard v2.0 — Animations + States
   Per dash-design-spec.md §5 + §4
══════════════════════════════════════════════════ */

/* === §5 Animations === */
/* fade-in — panel/data appearance */
@keyframes fade-in { 
  from { opacity: 0; transform: translateY(4px); } 
  to   { opacity: 1; transform: translateY(0); } 
}

/* shimmer — skeleton loading */
@keyframes shimmer { 
  0%,100% { background-position: -200% 0; } 
  50%     { background-position: 200% 0; } 
}

/* data-blink — value refresh pulse */
@keyframes data-blink { 
  0%,100% { background: transparent; } 
  50%     { background: var(--bg-hover); } 
}

/* panel-in — panel mount transition */
@keyframes panel-in { 
  from { opacity: 0; transform: scale(0.98); } 
  to   { opacity: 1; transform: scale(1); } 
}

/* spin — refresh indicator */
@keyframes spin { 
  to { transform: rotate(360deg); } 
}

/* === Utility animation classes === */
.animate-fade-in   { animation: fade-in 200ms ease-out; }
.animate-data-blink { animation: data-blink 300ms ease-in-out; }
.animate-panel-in  { animation: panel-in 250ms cubic-bezier(0.4,0,0.2,1); }

/* === §4 Component States === */

/* Status indicators */
.indicator {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.indicator.online  { background: var(--color-success); box-shadow: 0 0 6px var(--color-success); }
.indicator.busy    { background: var(--color-warning); box-shadow: 0 0 6px var(--color-warning); }
.indicator.offline { background: var(--color-error);   box-shadow: 0 0 6px var(--color-error); }
.indicator.idle    { background: var(--text-disabled); }

/* Loading — skeleton shimmer */
.skeleton {
  background: linear-gradient(90deg, 
    var(--bg-hover) 25%, 
    var(--bg-panel) 50%, 
    var(--bg-hover) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
  border-radius: var(--radius-md);
}
.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-title { height: 20px; width: 60%; margin-bottom: 12px; }
.skeleton-data { height: 28px; width: 40%; margin-bottom: 8px; }

/* Empty state */
.panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  color: var(--text-tertiary);
  text-align: center;
  font-size: 13px;
}
.panel-empty::before {
  content: "—";
  display: block;
  font-size: 32px;
  margin-bottom: 12px;
  opacity: 0.3;
  font-family: var(--font-mono);
}

/* Error state */
.panel-error {
  border-left: 3px solid var(--color-error);
  padding: var(--space-4, 16px);
  color: var(--color-error);
  background: var(--bg-error);
  border-radius: var(--radius-sm);
}

/* Panel loading overlay */
.panel-loading { opacity: 0.5; pointer-events: none; position: relative; }
.panel-loading::after {
  content: "";
  position: absolute; inset: 0;
  background: transparent;
}

/* Syncing spinner */
.syncing-indicator {
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid var(--border-default);
  border-top-color: var(--brand-blue);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* === Responsive adjustments === */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar .nav-item span:not(.nav-icon) { display: none; }
  .sidebar .nav-section { display: none; }
  .sidebar-logo h1 { font-size: 14px; }
  .main { margin-left: 60px; }
  .charts-grid { grid-template-columns: 1fr; }
}