:root{
  --mu-teal:#0f7c7b;
  --mu-teal-700:#0a5e5e;
  --mu-orange:#ff6b2c;
  --mu-bg:#f4faf9;
  --mu-card:#ffffff;
  --mu-muted:#6c757d;
  --mu-border:#e6efef;
  --mu-radius:14px;
}

body{
  background: var(--mu-bg);
}

a{ text-decoration: none; }

.app-shell{
  min-height: 100vh;
  display:flex;
  flex-direction:column;
}

.app-frame{
  flex: 1 1 auto;
  display:flex;
  gap: 0;
  min-height: 100vh;
}

.app-sidebar{
  width: 250px;
  min-width: 250px;
  flex-shrink: 0;
  background: #fff;
  border-right: 1px solid var(--mu-border);
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 1;
}

.sidebar-brand{
  padding: 18px 18px 12px 18px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100px;
}

.sidebar-brand a{
  display: flex;
  justify-content: center;
  align-items: center;
}

.sidebar-brand img{
  width: 130px;
  height: 110px;
  object-fit: contain;
  display: block;
}

.sidebar-nav{
  padding: 8px 10px 12px 10px;
}

.sidebar-section-title{
  font-size: 0.65rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #96a3a3;
  padding: 12px 12px 6px 12px;
}

.sidebar-link{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  color:#2b3b3b;
  font-weight: 600;
  font-size: 0.9rem;
}

.sidebar-link:hover{
  background:#f0f7f7;
  color:#1c2a2a;
}

.sidebar-link.active{
  background:#e7f4f4;
  color: var(--mu-teal-700);
}

.sidebar-footer{
  position:absolute;
  bottom: 14px;
  left: 10px;
  right: 10px;
}

.app-main{
  flex:1 1 auto;
  padding: 18px 18px 24px 18px;
  position: relative;
  z-index: 10;
}

.topbar{
  display:flex;
  justify-content: space-between;
  align-items:center;
  margin-bottom: 14px;
}

.topbar .page-title{
  font-weight: 800;
  color:#1f2d2d;
  font-size: 1.4rem;
}

.card-surface{
  background: var(--mu-card);
  border: 1px solid var(--mu-border);
  border-radius: var(--mu-radius);
  box-shadow: 0 10px 18px rgba(6, 43, 43, 0.04);
}

.panel-pad{
  padding: 16px;
}

.hr-soft{
  border-color: var(--mu-border);
  opacity: 1;
}

.badge-pill{
  border-radius: 999px;
  padding: .4rem .65rem;
}

.btn-mu{
  background: var(--mu-orange) !important;
  border-color: var(--mu-orange) !important;
  color:#fff !important;
  font-weight: 700;
}
.btn-mu:hover{ 
  filter: brightness(0.95); 
  color:#fff !important;
  background: var(--mu-orange) !important;
}

.btn-teal{
  background: var(--mu-teal) !important;
  border-color: var(--mu-teal) !important;
  color:#fff !important;
  font-weight: 700;
}
.btn-teal:hover{ 
  filter: brightness(0.95); 
  color:#fff !important;
  background: var(--mu-teal) !important;
}

.kpi-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 8px 10px;
  border: 1px solid var(--mu-border);
  border-radius: 999px;
  background:#fff;
  font-weight: 700;
  color:#1f2d2d;
}

.course-tile{
  height: 86px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--mu-teal), var(--mu-teal-700));
  display:flex;
  align-items:center;
  justify-content:center;
  color:#fff;
  font-weight: 800;
  letter-spacing:.02em;
}

.course-card .card-body{
  padding: 12px;
}
.course-card .card-title{
  font-weight: 800;
}
.course-card .card-text{
  color: var(--mu-muted);
  font-size: .9rem;
}

.assignments-item{
  display:flex;
  justify-content: space-between;
  align-items:center;
  padding: 10px 0;
  border-bottom: 1px dashed var(--mu-border);
}
.assignments-item:last-child{ border-bottom:0; }

.table thead th{
  font-size:.8rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  color:#607070;
  border-bottom: 1px solid var(--mu-border) !important;
}
.table td, .table th{
  border-top: 1px solid var(--mu-border);
}

.form-control, .form-select{
  border-radius: 10px;
  border-color: var(--mu-border);
}

.progress{
  height: 10px;
  border-radius: 999px;
  background:#eef6f6;
}
.progress-bar{
  background: var(--mu-teal);
}
.progress-bar.bg-success{
  background: #01727A !important;
}

.app-footer{
  padding: 12px 0 0 0;
  color:#7c8b8b;
  font-size:.9rem;
}

/* Sidebar Overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1039;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.sidebar-overlay.show {
  display: block;
  opacity: 1;
}

/* Mobile */
@media (max-width: 991.98px){
  .app-sidebar{
    position: fixed;
    left: -280px;
    top:0;
    z-index: 1040;
    transition: left .2s ease;
    box-shadow: 0 18px 30px rgba(0,0,0,.15);
  }
  .app-sidebar.open{ left:0; }
  .app-main{ padding: 14px; }
  .sidebar-brand{
    display: none;
  }
}

/* Login */
.login-bg{
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.10), transparent 40%),
    radial-gradient(circle at 80% 40%, rgba(255,255,255,.08), transparent 40%),
    linear-gradient(135deg, var(--mu-teal), var(--mu-teal-700));
  position: relative;
  overflow:hidden;
}
.login-bg:before{
  content:"";
  position:absolute;
  inset:0;
  background-image: url("../assets/img/pattern.svg");
  opacity: 1;
  background-size: 240px 240px;
  mix-blend-mode: soft-light;
}
.login-card{
  position: relative;
  width: 360px;
  max-width: 92vw;
  border-radius: 18px;
  overflow:hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,.2);
}
.login-card .card-body{
  padding: 18px 18px 16px 18px;
}
.login-tabs{
  display:flex;
  justify-content:center;
  gap: 14px;
  font-weight: 800;
}
.login-tabs a{
  color:#6f7a7a;
  padding: 6px 10px;
  border-bottom: 3px solid transparent;
}
.login-tabs a.active{
  color: var(--mu-orange);
  border-bottom-color: var(--mu-orange);
}

/* Teal checkbox */
.form-check-input:checked {
  background-color: #01727A;
  border-color: #01727A;
}
.form-check-input:focus {
  border-color: #01727A;
  box-shadow: 0 0 0 0.25rem rgba(1, 114, 122, 0.25);
}

/* User dropdown - regular text color */
#userDropdown {
  color: #333;
}
#userDropdown:hover {
  color: #01727A;
}