/* ==========================================================================
   VORTEX-SDN Enterprise Sidebar Styling
   Two-State Collapse/Expand (260px <-> 72px)
   STRICT: Zero Internal Nested Scrollbar (Fits 100vh)
   ========================================================================== */

/* Brand Header */
.sidebar-brand {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  transition: opacity 0.18s ease;
}

.brand-icon-svg {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #0284c7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #070a13;
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(var(--accent-cyan-rgb), 0.35);
  transition: box-shadow 0.2s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (hover: hover) and (pointer: fine) {
  .brand-logo-wrap:hover .brand-icon-svg {
    box-shadow: 0 0 20px rgba(var(--accent-cyan-rgb), 0.6);
    transform: scale(1.03);
  }

  .brand-logo-wrap:hover .brand-title {
    color: #ffffff;
    text-shadow: 0 0 8px rgba(var(--accent-cyan-rgb), 0.3);
  }
}

[data-theme="light"] .brand-icon-svg {
  color: #ffffff;
}

.brand-text {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  transition: opacity var(--transition-fast);
}

.brand-title {
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: var(--text-primary);
  font-family: var(--font-sans);
}

.brand-subtitle {
  font-size: 8.5px;
  color: var(--accent-cyan);
  font-weight: 700;
  letter-spacing: 1.3px;
  text-transform: uppercase;
}

.sidebar-collapse-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
}

.sidebar-collapse-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: var(--bg-card-hover);
}

@media (hover: hover) and (pointer: fine) {
  .sidebar-collapse-btn:hover {
    box-shadow: 0 0 10px rgba(var(--accent-cyan-rgb), 0.28);
  }

  .sidebar-collapse-btn:hover svg {
    color: var(--accent-cyan);
    filter: drop-shadow(0 0 4px rgba(var(--accent-cyan-rgb), 0.45));
  }
}

/* Sidebar Nav Body (Strictly fitted to 100vh without ugly scrollbar) */
.sidebar-nav {
  flex: 1;
  padding: 4px 6px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden; /* Zero scrollbars */
  justify-content: flex-start;
}

.nav-section-title {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 5px 10px 2px 10px;
  margin-top: 3px;
  white-space: nowrap;
  user-select: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6.5px 10px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.18s ease,
              color 0.18s ease,
              box-shadow 0.18s ease,
              border-color 0.18s ease;
  position: relative;
  user-select: none;
  overflow: hidden;
  will-change: transform;
}

/* Ensure collapsed sidebar allows tooltip popover to overflow */
#sidebar.collapsed .nav-item {
  overflow: visible;
}

/* Subtle Cursor-Following Radial Spotlight for Expanded Sidebar */
#sidebar:not(.collapsed) .nav-item::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    130px circle at var(--mouse-x, -999px) var(--mouse-y, -999px),
    rgba(0, 242, 254, 0.08),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.22s ease;
  z-index: 1;
}

.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

.nav-item.active {
  color: var(--accent-cyan);
  background: rgba(var(--accent-cyan-rgb), 0.08);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  background-color: var(--accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  box-shadow: 0 0 8px rgba(var(--accent-cyan-rgb), 0.5);
  z-index: 3;
  transition: box-shadow 0.18s ease;
}

.nav-icon {
  width: 17px;
  height: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              color 0.18s ease,
              filter 0.18s ease;
}

.nav-icon svg {
  width: 100%;
  height: 100%;
  transition: stroke 0.18s ease, color 0.18s ease;
}

.nav-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  position: relative;
  z-index: 2;
  transition: color 0.18s ease, text-shadow 0.18s ease;
}

.nav-badge {
  padding: 1px 5px;
  border-radius: var(--radius-full);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 2;
  transition: filter 0.18s ease, box-shadow 0.18s ease;
}

.nav-badge.live {
  background: rgba(var(--status-success-rgb), 0.15);
  color: var(--status-success);
  border: 1px solid rgba(var(--status-success-rgb), 0.3);
}

.nav-badge.danger {
  background: var(--status-danger);
  color: #ffffff;
}

.nav-badge.info {
  background: rgba(var(--accent-cyan-rgb), 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
}

/* ==========================================================================
   Desktop Fine Pointer Hover Interactions (150-220ms, 2-4px movement)
   ========================================================================== */
@media (hover: hover) and (pointer: fine) {
  /* Reveal cursor-following spotlight on hover */
  #sidebar:not(.collapsed) .nav-item:hover::after {
    opacity: 1;
  }

  /* Standard Item Hover State */
  .nav-item:hover {
    color: var(--text-primary);
    background-color: var(--surface-hover);
    box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.16), 0 2px 8px -2px rgba(0, 0, 0, 0.4), 0 0 12px rgba(0, 242, 254, 0.06);
    transform: translateX(3px);
  }

  .nav-item:hover .nav-icon {
    color: var(--text-primary);
    transform: translateX(1px);
    filter: drop-shadow(0 0 5px rgba(0, 242, 254, 0.35));
  }

  .nav-item:hover .nav-label {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.12);
  }

  /* Badge Hover Response */
  .nav-item:hover .nav-badge {
    filter: brightness(1.15);
    box-shadow: 0 0 8px rgba(var(--accent-cyan-rgb), 0.28);
  }

  .nav-item:hover .nav-badge.live {
    box-shadow: 0 0 8px rgba(var(--status-success-rgb), 0.4);
  }

  .nav-item:hover .nav-badge.info {
    box-shadow: 0 0 8px rgba(var(--accent-cyan-rgb), 0.35);
  }

  /* Active Item Hover Refinement */
  .nav-item.active:hover {
    color: var(--accent-cyan);
    background: rgba(var(--accent-cyan-rgb), 0.12);
    box-shadow: inset 0 0 0 1px rgba(var(--accent-cyan-rgb), 0.28), 0 2px 10px rgba(var(--accent-cyan-rgb), 0.12);
    transform: translateX(3px);
  }

  .nav-item.active:hover::before {
    box-shadow: 0 0 12px rgba(var(--accent-cyan-rgb), 0.8);
  }

  .nav-item.active:hover .nav-icon {
    color: var(--accent-cyan);
    filter: drop-shadow(0 0 7px rgba(var(--accent-cyan-rgb), 0.6));
  }

  .nav-item.active:hover .nav-label {
    color: var(--accent-cyan);
    text-shadow: 0 0 12px rgba(var(--accent-cyan-rgb), 0.35);
  }

  /* Collapsed Mode: Prevent horizontal shift to keep centered icon & tooltip position rock-solid */
  #sidebar.collapsed .nav-item:hover {
    transform: none;
  }

  #sidebar.collapsed .nav-item:hover .nav-icon {
    transform: none;
  }
}

/* User Footer in Sidebar */
.sidebar-user-footer {
  padding: 8px var(--space-md);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-secondary);
  flex-shrink: 0;
}

.user-avatar-circle {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1.5px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.user-info-text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.user-name-display {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role-badge {
  font-size: 9px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Collapsed State Modifiers (width: 72px)
   ========================================================================== */
#sidebar.collapsed .brand-text,
#sidebar.collapsed .nav-section-title,
#sidebar.collapsed .nav-label,
#sidebar.collapsed .nav-badge,
#sidebar.collapsed .user-info-text {
  display: none;
}

#sidebar.collapsed .sidebar-brand {
  padding: 0 var(--space-sm);
  justify-content: center;
  gap: 6px;
}

#sidebar.collapsed .sidebar-collapse-btn {
  margin-left: 0;
}

#sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 7px 0;
}

#sidebar.collapsed .sidebar-user-footer {
  justify-content: center;
  padding: 8px var(--space-xs);
}

/* Tooltip on Collapsed Hover */
#sidebar.collapsed .nav-item[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
  z-index: 250;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  animation: fadeIn 0.1s ease;
}

/* ==========================================================================
   Light Mode Sidebar Styles & High Contrast Navigation
   ========================================================================== */
[data-theme="light"] #sidebar {
  background-color: #ffffff;
  border-right: 1px solid #d8e1ec;
}

[data-theme="light"] .sidebar-brand {
  background-color: #f8fafd;
  border-bottom: 1px solid #d8e1ec;
}

[data-theme="light"] .brand-title {
  color: #0f172a;
}

[data-theme="light"] .brand-subtitle {
  color: #0284c7;
}

[data-theme="light"] .brand-logo-wrap:hover .brand-icon-svg {
  box-shadow: 0 0 18px rgba(2, 132, 199, 0.45);
  transform: scale(1.03);
}

[data-theme="light"] .brand-logo-wrap:hover .brand-title {
  color: #0f172a;
  text-shadow: none;
}

[data-theme="light"] .sidebar-collapse-btn {
  background: #ffffff;
  border: 1px solid #d8e1ec;
  color: #64748b;
}

[data-theme="light"] .sidebar-collapse-btn:hover {
  background: #f1f5f9;
  border-color: #0284c7;
  color: #0284c7;
  box-shadow: 0 0 8px rgba(2, 132, 199, 0.2);
}

[data-theme="light"] .sidebar-collapse-btn:hover svg {
  color: #0284c7;
  filter: drop-shadow(0 0 3px rgba(2, 132, 199, 0.25));
}

[data-theme="light"] #sidebar:not(.collapsed) .nav-item::after {
  background: radial-gradient(
    130px circle at var(--mouse-x, -999px) var(--mouse-y, -999px),
    rgba(2, 132, 199, 0.08),
    transparent 70%
  );
}

[data-theme="light"] .nav-section-title {
  color: #64748b;
  font-weight: 700;
}

[data-theme="light"] .nav-item {
  color: #475569;
}

[data-theme="light"] .nav-item .nav-icon svg {
  color: #64748b;
}

[data-theme="light"] .nav-item:hover {
  background-color: #f1f5f9;
  color: #0f172a;
  box-shadow: inset 0 0 0 1px rgba(2, 132, 199, 0.2), 0 2px 6px rgba(15, 23, 42, 0.05);
}

[data-theme="light"] .nav-item:hover .nav-icon {
  color: #0284c7;
  filter: drop-shadow(0 0 4px rgba(2, 132, 199, 0.25));
}

[data-theme="light"] .nav-item:hover .nav-icon svg {
  color: #0284c7;
}

[data-theme="light"] .nav-item:hover .nav-label {
  color: #0f172a;
  text-shadow: none;
}

[data-theme="light"] .nav-item:hover .nav-badge {
  filter: brightness(1.05);
  box-shadow: 0 0 6px rgba(2, 132, 199, 0.2);
}

[data-theme="light"] .nav-item.active {
  color: #0284c7;
  background: #e0f2fe;
  font-weight: 600;
}

[data-theme="light"] .nav-item.active .nav-icon svg {
  color: #0284c7;
}

[data-theme="light"] .nav-item.active:hover {
  background: #bae6fd;
  color: #0284c7;
  box-shadow: inset 0 0 0 1px rgba(2, 132, 199, 0.35), 0 2px 8px rgba(2, 132, 199, 0.15);
}

[data-theme="light"] .nav-item.active:hover .nav-icon {
  color: #0284c7;
  filter: drop-shadow(0 0 5px rgba(2, 132, 199, 0.4));
}

[data-theme="light"] .sidebar-user-footer {
  border-top: 1px solid #d8e1ec;
  background-color: #f8fafd;
}

[data-theme="light"] .user-name {
  color: #0f172a;
}

[data-theme="light"] .user-role {
  color: #64748b;
}

[data-theme="light"] .sidebar-logout-btn {
  background: #ffffff;
  border: 1px solid #d8e1ec;
  color: #64748b;
}

[data-theme="light"] .sidebar-logout-btn:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #dc2626;
}

[data-theme="light"] #sidebar.collapsed .nav-item[data-tooltip]:hover::after {
  background: #ffffff;
  color: #0f172a;
  border: 1px solid #d8e1ec;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
}