/* Container */
.container{
  width: min(var(--container), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

/* Header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 14px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .2px;
}
.brand-badge{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: var(--shadow-sm);
}

.nav{
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav a{
  color: var(--muted);
  font-weight: 600;
  padding: 10px 10px;
  border-radius: 12px;
}
.nav a:hover{
  color: var(--text);
  background: #f3f4f6;
}

.header-actions{
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Buttons */
.btn{
  height: var(--btn-h);
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.btn:hover{ box-shadow: var(--shadow-sm); }
.btn-primary{
  border: none;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.btn-ghost{
  background: transparent;
}

/* Cards + grid */
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-pad{ padding: 18px; }

.grid{
  display: grid;
  gap: 16px;
}
.grid-3{
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid-4{
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* Footer */
.site-footer{
  margin-top: 40px;
  border-top: 1px solid var(--border);
  padding: 26px 0;
  color: var(--muted);
}

/* Mobile Nav */
.mobile-toggle{
  display: none;
}
@media (max-width: 900px){
  .nav{ display: none; }
  .mobile-toggle{ display: inline-flex; }
  .nav.is-open{
    display: flex;
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 12px;
    flex-direction: column;
    gap: 6px;
  }
}

/* Responsive grids */
@media (max-width: 1000px){
  .grid-4{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px){
  .grid-3{ grid-template-columns: 1fr; }
  .grid-4{ grid-template-columns: 1fr; }
}