:root{
  --cm-bg:#0b1220; --cm-surface:#0f172a; --cm-card:#111827;
  --cm-text:#e5e7eb; --cm-text-muted:#9ca3af;
  --cm-primary:#3b82f6; --cm-primary-600:#2563eb;
  --cm-success:#22c55e; --cm-warning:#f59e0b; --cm-danger:#ef4444;
  --cm-border:rgba(255,255,255,0.08);
  --cm-radius:14px; --cm-shadow:0 8px 24px rgba(0,0,0,.35);
}

/* Typography System */
body{
  background:var(--cm-bg);
  color:var(--cm-text);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6{font-weight:700;letter-spacing:-0.02em;color:var(--cm-text);}
.display-1,.display-2,.display-3,.display-4{font-weight:800;letter-spacing:-0.03em;}
p{margin-bottom:1rem;}
.lead{font-size:1.25rem;font-weight:400;line-height:1.5;}

/* Card System */
.card{background:var(--cm-card);border:1px solid var(--cm-border);border-radius:var(--cm-radius);box-shadow:var(--cm-shadow);}
.card-header{background:transparent;border-bottom:1px solid var(--cm-border);color:var(--cm-text);font-weight:600;}
.navbar,.footer{background:var(--cm-surface)!important;border-bottom:1px solid var(--cm-border);}

/* Buttons */
.btn{font-weight:600;border-radius:10px;transition:all 0.2s ease;}
.btn-primary{background:var(--cm-primary);border:none;}
.btn-primary:hover{background:var(--cm-primary-600);transform:translateY(-1px);box-shadow:0 4px 12px rgba(59,130,246,0.3);}
.btn-outline-primary{color:var(--cm-primary);border-color:var(--cm-primary);}
.btn-outline-primary:hover{background:var(--cm-primary);border-color:var(--cm-primary);}

/* Progress & Badges */
.progress{background:rgba(255,255,255,0.08);border-radius:999px;height:10px;}
.progress-bar{border-radius:999px;}
.badge{border-radius:8px;font-weight:600;padding:0.35em 0.65em;}

/* Lists */
.list-group-item{background:transparent;color:var(--cm-text);border-color:var(--cm-border);}
.list-group-item-action:hover{background:rgba(255,255,255,0.05);}

/* Links */
a{color:var(--cm-primary);text-decoration:none;transition:color 0.2s ease;}
a:hover{color:var(--cm-primary-600);text-decoration:underline;}
.small,.text-muted{color:var(--cm-text-muted)!important;}

/* Hover Effects */
.hover-lift{transition:transform 0.2s ease,box-shadow 0.2s ease;}
.hover-lift:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(59,130,246,0.15);}

/* Loading States */
.loading-spinner{
  display:inline-block;
  width:20px;
  height:20px;
  border:3px solid rgba(255,255,255,0.2);
  border-top-color:var(--cm-primary);
  border-radius:50%;
  animation:spinner 0.8s linear infinite;
}
.loading-spinner-lg{width:40px;height:40px;border-width:4px;}
@keyframes spinner{to{transform:rotate(360deg);}}

/* Skeleton Loading */
.skeleton{
  background:linear-gradient(90deg,rgba(255,255,255,0.05) 25%,rgba(255,255,255,0.1) 50%,rgba(255,255,255,0.05) 75%);
  background-size:200% 100%;
  animation:skeleton-loading 1.5s ease-in-out infinite;
  border-radius:8px;
}
.skeleton-text{height:1rem;margin-bottom:0.5rem;}
.skeleton-title{height:1.5rem;width:60%;margin-bottom:1rem;}
.skeleton-avatar{width:48px;height:48px;border-radius:50%;}
.skeleton-card{height:200px;}
@keyframes skeleton-loading{0%{background-position:200% 0;}100%{background-position:-200% 0;}}

/* Loading Overlay */
.loading-overlay{
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:rgba(11,18,32,0.8);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:1000;
  border-radius:var(--cm-radius);
}

/* Pulse Animation */
.pulse{animation:pulse 2s cubic-bezier(0.4,0,0.6,1) infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:0.5;}}

/* Fade In */
.fade-in{animation:fadeIn 0.3s ease-in;}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}