.assignments-summary-bar,
.filter-bar,
.assignment-card,
.assignment-section,
.assignments-empty {
  background: rgba(255,255,255,0.82);
  border: var(--border-card);
  border-radius: 28px;
  box-shadow: var(--shadow-sm);
}

.assignments-summary-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
  padding: 22px;
}

.summary-stat {
  padding: 18px;
  border-radius: 22px;
  background: var(--bg-surface-muted);
}

.summary-num {
  display: block;
  font-size: 2rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

.summary-label {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.filter-bar-wrapper {
  margin-bottom: 28px;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 18px 22px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-group-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.filter-btn {
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: var(--border-card);
  background: var(--bg-surface-muted);
  color: var(--text-secondary);
  cursor: pointer;
}

.filter-btn.active {
  background: var(--gradient-button);
  color: #fff;
  border-color: transparent;
}

.filter-divider {
  width: 1px;
  height: 28px;
  background: rgba(23,23,23,0.08);
}

.assignment-section {
  padding: 24px;
  margin-bottom: 20px;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.section-heading-sub {
  margin-left: auto;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.assignment-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.assignment-card {
  padding: 22px;
}

.assignment-card-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.assignment-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  flex: 1;
}

.assignment-card-desc {
  margin: 14px 0 18px;
  color: var(--text-secondary);
}

.assignment-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: var(--border-subtle);
  padding-top: 14px;
}

.assignment-week-tag {
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-surface-muted);
}

@media (max-width: 900px) {
  .assignments-summary-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .assignment-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .assignments-summary-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 14px;
  }

  .section-heading {
    flex-wrap: wrap;
    gap: 8px;
  }

  .section-heading-sub {
    display: none;
  }

  .filter-divider {
    display: none;
  }

  .filter-bar {
    gap: 12px;
    padding: 14px 16px;
  }
}

@media (max-width: 400px) {
  .assignments-summary-bar {
    grid-template-columns: 1fr;
  }
}