/* SHM Modern Engineering Design System */
:root {
  --bg-primary: #070b14;
  --bg-secondary: #0d1527;
  --bg-card: rgba(13, 21, 39, 0.88);
  --bg-card-hover: rgba(22, 34, 62, 0.95);
  --border-color: rgba(56, 189, 248, 0.2);
  --border-glow: rgba(56, 189, 248, 0.6);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-cyan: #06b6d4;
  --accent-blue: #38bdf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

body.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: #ffffff;
  --border-color: rgba(203, 213, 225, 0.9);
  --border-glow: rgba(59, 130, 246, 0.5);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
}

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glass);
  transition: all 0.25s ease;
}

.glass-card:hover {
  border-color: var(--border-glow);
}

/* Sidebar */
aside {
  width: 260px;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 50;
  padding: 20px 14px;
}

.main-content {
  margin-left: 260px;
  flex: 1;
  min-height: 100vh;
  padding: 24px 32px 60px;
}

/* Nav Item */
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 4px;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item:hover, .nav-item.active {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.14);
  border-left: 3px solid #38bdf8;
}

.pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.metric-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-primary:hover {
  box-shadow: 0 0 18px rgba(6, 182, 212, 0.6);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-glow);
}

/* Toast */
#toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid var(--border-glow);
  padding: 14px 20px;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  color: #f8fafc;
  font-size: 13px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
#toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}