/* ==========================================================================
   Drawer — right-hand slide-over panel
   ========================================================================== */
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-drawer);
  display: flex;
  justify-content: flex-end;
  width: 40%;
  min-width: 420px;
}

.drawer__overlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(15, 30, 45, 0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: calc(var(--z-drawer) - 1);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.drawer__content {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-lg);
  border-left: 1px solid var(--color-border);
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
}

/* Open state — toggled by the drawer controller to play the slide in/out. */
.drawer--shown .drawer__overlay {
  opacity: 1;
}

.drawer--shown .drawer__content {
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .drawer__overlay,
  .drawer__content {
    transition: none;
  }
}

.drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0 var(--space-5);
  background-color: var(--color-primary-green);
  color: var(--color-white);
  height: var(--topbar-height);
  flex-shrink: 0;
}

.drawer__header--danger {
  background-color: var(--color-danger-light);
}

.drawer__title {
  margin: 0;
  font-size: var(--font-size-xlarge);
  font-weight: 600;
  color: var(--color-white);
}

.drawer__close {
  border: none;
  background: var(--tint-white-10);
  color: var(--color-white);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-base);
}

.drawer__close:hover {
  background: var(--tint-white-24);
}

.drawer__body {
  padding: var(--space-5);
  flex: 1;
  overflow-y: auto;
}

body.drawer--open {
  overflow: hidden;
}

@media (max-width: 768px) {
  .drawer {
    width: 100%;
    min-width: 0;
  }

  .drawer__content {
    border-radius: 0;
  }
}

/* ==========================================================================
   Assignment workflow (rendered inside the drawer)
   ========================================================================== */
.assignment-workflow__steps {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.assignment-workflow__step {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-family-bold);
  font-size: var(--font-size-medium);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.assignment-workflow__step:hover {
  background: var(--tint-navy-06);
}

.assignment-workflow__step--active {
  color: var(--color-primary-dark);
  border-color: var(--tint-green-28);
  background: var(--tint-green-10);
  box-shadow: inset 0 -2px 0 var(--color-primary-green);
}

.assignment-workflow__panel {
  margin-bottom: var(--space-4);
}

.assignment-workflow__panel h3 {
  margin-bottom: var(--space-1);
  color: var(--color-primary-dark);
}

.assignment-workflow__panel p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--font-size-medium);
}

.assignment-workflow__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

.assignment-workflow__errors {
  border: 1px solid var(--tint-danger-16);
  border-left: 3px solid var(--color-danger);
  border-radius: var(--radius-md);
  background: var(--tint-danger-10);
  color: var(--color-danger);
  font-size: var(--font-size-small);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}

.assignment-workflow__errors ul {
  margin: 0;
  padding-left: var(--space-4);
}