/* SideLeftPanel: UX polish for NOVA sidepanel_left + dropdowns */

:root {
  --slp-radius: 12px;
  --slp-border: rgba(0, 0, 0, 0.08);
  --slp-blur: 12px;
  --slp-opacity: 0.75;
  --slp-bg: rgba(255, 255, 255, var(--slp-opacity));
  --slp-bg-soft: rgba(245, 247, 250, calc(var(--slp-opacity) - 0.25));
  --slp-accent: #007bff;
  --slp-shadow: 0 12px 32px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --slp-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Keep changes scoped */
#sidepanel_left.sidepanel-left {
  contain: layout paint;
}

/* Mobile: make filter boxes feel like an accordion */
@media (max-width: 767.98px) {
  #sidepanel_left .box.box-normal {
    margin-bottom: 1rem;
    border: 1px solid var(--slp-border);
    border-radius: var(--slp-radius);
    background: var(--slp-bg);
    backdrop-filter: blur(var(--slp-blur)); /* Glassmorphism */
    -webkit-backdrop-filter: blur(var(--slp-blur));
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    transition: var(--slp-transition);
  }

  #sidepanel_left .box.box-normal:active {
    transform: scale(0.995);
  }

  #sidepanel_left .box.box-normal .box-normal-link {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.15rem;
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.2;
    text-decoration: none;
    color: #1a1a1a;
    background: var(--slp-bg-soft);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    min-height: 48px;
    transition: var(--slp-transition);
    position: relative;
  }

  /* Chevron indicator */
  #sidepanel_left .box.box-normal .box-normal-link::after {
    content: '';
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: var(--slp-transition);
    margin-right: 0.25rem;
    opacity: 0.6;
  }

  /* Rotate chevron when expanded (Bootstrap adds aria-expanded="true") */
  #sidepanel_left .box.box-normal .box-normal-link[aria-expanded="true"]::after {
    transform: rotate(-135deg);
    opacity: 1;
  }

  #sidepanel_left .box.box-normal .box-normal-link:focus {
    outline: none;
  }
  #sidepanel_left .box.box-normal .box-normal-link:focus-visible {
    outline: 2px solid var(--slp-accent);
    outline-offset: -2px;
  }

  /* Collapse body spacing and transitions */
  #sidepanel_left .box.box-normal .collapse,
  #sidepanel_left .box.box-normal .collapsing {
    padding: 0.5rem 1rem 1.25rem;
    transition: var(--slp-transition);
  }

  /* Better list readability in sidepanel */
  #sidepanel_left .box.box-normal .nav .nav-link,
  #sidepanel_left .box.box-normal .dropdown-item {
    padding: 0.65rem 0.5rem;
    border-radius: 6px;
    margin: 0.1rem 0;
    transition: var(--slp-transition);
  }
}

/* Desktop: subtle separators, keep original layout */
@media (min-width: 768px) {
  #sidepanel_left .box.box-normal {
    padding-bottom: 0.5rem;
  }
  #sidepanel_left .box.box-normal:not(:last-child) {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 1.25rem;
  }
}

/* Dropdowns inside sidepanel: larger click targets + nicer scrolling */
#sidepanel_left.dropdown-full-width .dropdown-menu,
#sidepanel_left .dropdown-menu {
  border-radius: var(--slp-radius);
  box-shadow: var(--slp-shadow);
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: var(--slp-bg);
  backdrop-filter: blur(var(--slp-blur));
  -webkit-backdrop-filter: blur(var(--slp-blur));
}

#sidepanel_left .dropdown-item {
  white-space: normal;
  word-break: break-word;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  margin: 2px 4px;
}

#sidepanel_left .dropdown-item:hover,
#sidepanel_left .dropdown-item:focus {
  background: rgba(0, 123, 255, 0.06);
  color: var(--slp-accent);
}

/* Ensure dropdown menu never overflows viewport height */
#sidepanel_left .dropdown-menu {
  max-height: min(65vh, 560px);
  overflow-y: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

/* Reduce layout shift when dropdown opens full-width */
#sidepanel_left.dropdown-full-width .dropdown-menu {
  width: 100%;
}