.layout-container {
  width: min(var(--container-max-width), 100% - var(--spacing-xl) * 2);
  margin-inline: auto;
}

.main-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("../assets/knu-bg.png");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  filter: blur(1px);

  &::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(
        circle at 80% 20%,
        var(--bg-circle-1) 0%,
        transparent 40%
      ),
      radial-gradient(
        circle at 20% 80%,
        var(--bg-circle-2) 0%,
        transparent 40%
      ),
      var(--surface);
    opacity: 0.8;
    z-index: 1;
  }
}

.glass-card {
  background: var(--surface-glass);
  backdrop-filter: blur(var(--blur-standard));
  border: var(--border-glass);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-round);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;

  &.primary {
    background: var(--primary);
    color: var(--text-on-primary);

    &:hover {
      background: color-mix(in oklab, var(--primary), white 10%);
      transform: translateY(-2px);
    }
  }

  &.glass {
    background: var(--surface-glass);
    backdrop-filter: blur(var(--blur-standard));
    border: var(--border-glass);
    color: var(--text);

    &:hover {
      background: rgba(255, 255, 255, 0.6);
      transform: translateY(-2px);
    }
  }
}