/* OncoEdge sidebar – mobile drawer + desktop panel */

.oe-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--oe-z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.oe-sidebar-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.oe-sidebar {
  position: fixed;
  top: calc(var(--oe-header-h) + var(--oe-subheader-h) + var(--oe-safe-top));
  left: 0;
  bottom: calc(var(--oe-footer-h) + var(--oe-safe-bottom));
  width: var(--oe-sidebar-width);
  background: var(--banner-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-right: 1px solid var(--card-border);
  z-index: var(--oe-z-sidebar);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.oe-sidebar.is-open {
  transform: translateX(0);
}

.oe-sidebar .oe-select-field,
.oe-sidebar .oe-select,
.oe-sidebar .oe-input {
  width: 100%;
}

.oe-sidebar__btn {
  width: 100%;
  justify-content: flex-start;
  border-radius: 8px;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
  border: 1px solid var(--card-border);
  background: var(--option-bg);
  color: var(--text-color);
  cursor: pointer;
}

.oe-sidebar__btn:hover {
  background: var(--option-hover-bg);
}

.oe-sidebar__search-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.oe-sidebar--right {
  left: auto;
  right: 0;
  border-right: none;
  border-left: 1px solid var(--card-border);
  transform: translateX(100%);
}

.oe-sidebar--right.is-open {
  transform: translateX(0);
}

@media (min-width: 769px) {
  .oe-sidebar--persistent {
    transform: translateX(0);
    position: fixed;
  }

  .oe-app.has-sidebar-persistent .oe-main {
    margin-left: var(--oe-sidebar-width);
  }

  .oe-sidebar--persistent + .oe-sidebar-overlay {
    display: none;
  }
}

/* Landing mobile sidebar */
.oe-sidebar--landing {
  top: calc(var(--oe-header-h) + var(--oe-subheader-h));
  bottom: 0;
  width: min(280px, 85vw);
}

.oe-sidebar--landing .oe-sidebar__nav-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-color);
  text-decoration: none;
  border-radius: 8px;
}

.oe-sidebar--landing .oe-sidebar__nav-link:hover {
  background: var(--option-hover-bg);
}

/* MCQ filter drawer (Question Bank, etc.) */
.oe-sidebar--mcq {
  width: min(340px, 92vw);
  padding: 0;
  gap: 0;
  overflow: hidden;
  background: var(--glass-card-bg);
  border-left: 1px solid var(--glass-card-border);
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.18);
}

.oe-sidebar--mcq .oe-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--oe-border-subtle, var(--card-border));
  flex-shrink: 0;
}

.oe-sidebar--mcq .oe-sidebar__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.oe-sidebar--mcq .oe-sidebar__close {
  flex-shrink: 0;
}

.oe-sidebar--mcq .oe-sidebar__body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0.5rem 0;
}

.oe-sidebar--mcq .oe-sidebar__section {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--oe-border-subtle, var(--card-border));
}

.oe-sidebar--mcq .oe-sidebar__label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted-text);
}

.oe-sidebar--mcq .oe-sidebar__search-row {
  gap: 0.5rem;
}

.oe-sidebar--mcq .oe-sidebar__search-row .btn {
  width: 100%;
  margin-top: 0.25rem;
}

.oe-sidebar--mcq .oe-sidebar__actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.25rem calc(1rem + var(--oe-safe-bottom));
  margin-top: auto;
  border-top: 1px solid var(--oe-border-subtle, var(--card-border));
  flex-shrink: 0;
}

.oe-sidebar--mcq .oe-sidebar__btn {
  font-size: 0.95rem;
  font-weight: 500;
  justify-content: flex-start;
}

.oe-sidebar--mcq .oe-sidebar__btn i {
  width: 1.25rem;
  flex-shrink: 0;
  text-align: center;
  color: var(--accent-color);
}

.oe-sidebar__btn--danger {
  background: var(--error-color) !important;
  border-color: transparent !important;
  color: #fff !important;
}

.oe-sidebar__btn--danger i {
  color: #fff !important;
}

.oe-sidebar__btn--danger:hover {
  filter: brightness(1.08);
}

.oe-sidebar__btn--reset[hidden] {
  display: none !important;
}

.oe-sidebar__btn--reset:not([hidden]) {
  display: flex;
}

/* Mobile drawer — full viewport height (over header/footer) */
@media (max-width: 768px) {
  .oe-sidebar:not(.oe-sidebar--persistent) {
    top: 0;
    bottom: 0;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
  }

  .oe-sidebar--mcq {
    width: min(340px, 100vw);
  }

  .oe-sidebar--mcq .oe-sidebar__header {
    padding-top: calc(1rem + var(--oe-safe-top));
  }

  .oe-sidebar--mcq .oe-sidebar__actions {
    padding-bottom: calc(1rem + var(--oe-safe-bottom));
  }
}