/* ═══════════════════════════════════════════════════
   Modern Sidebar — Professional dark theme with red accents
   ═══════════════════════════════════════════════════ */

:root {
  /* Dynamic theme color scheme */
  --sidebar-bg: linear-gradient(180deg, var(--fms-primary, #dc2626), var(--fms-primary-dark, #991b1b));
  --sidebar-brand-bg: rgba(0, 0, 0, 0.1);
  --sidebar-brand-border: rgba(255, 255, 255, 0.1);
  --sidebar-user-bg: rgba(0, 0, 0, 0.05);
  --sidebar-user-border: rgba(255, 255, 255, 0.08);
  --sidebar-nav-hover: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.15);
  --sidebar-nav-active: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.25);
  --sidebar-nav-border: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.40);
  --sidebar-text-primary: #ffffff;
  --sidebar-text-secondary: rgba(255, 255, 255, 0.90);
  --sidebar-text-muted: rgba(255, 255, 255, 0.85);
  --sidebar-icon-bg: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.20);
  --sidebar-icon-border: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.30);
  
  /* Enhanced shadows and transitions */
  --sidebar-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  --sidebar-transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  --sidebar-item-transition: all 0.3s cubic-bezier(0.3, 1, 0.2, 1);
  
  /* Modern spacing */
  --sidebar-width: 260px;
  --sidebar-width-collapsed: 72px;
  --sidebar-padding: 12px;
  --sidebar-gap: 8px;
  --sidebar-radius: 16px;
  --sidebar-item-radius: 12px;
}

/* ── Enhanced Sidebar Container ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text-primary);
  display: flex;
  flex-direction: column;
  z-index: 1050;
  box-shadow: var(--sidebar-shadow);
  transition: var(--sidebar-transition);
  backdrop-filter: blur(10px);
}

.sidebar-header {
  padding: 32px 16px 24px;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 8px;
}

.sidebar.collapsed {
  width: var(--sidebar-width-collapsed);
}

/* ── Collapsed State Refinements ── */
.sidebar.collapsed .sidebar-header {
  padding: 12px 0;
  gap: 8px;
}

.sidebar.collapsed .sidebar-brand {
  display: none;
}

.sidebar.collapsed .sidebar-user-container {
  justify-content: center;
  padding: 8px 0;
}

.sidebar.collapsed .sidebar-brand-meta,
.sidebar.collapsed .sidebar-nav-text,
.sidebar.collapsed .sidebar-nav-caret,
.sidebar.collapsed .sidebar-bottom {
  display: none;
}

/* Submenus siempre ocultos en collapsed (no hover) */
.sidebar.collapsed:not(:hover) .sidebar-submenu {
  display: none !important;
  max-height: 0 !important;
}

/* Ícono centrado en modo collapsed con padding propio */
.sidebar.collapsed:not(:hover) .sidebar-nav-item,
.sidebar.collapsed:not(:hover) .sidebar-nav-group-toggle {
  justify-content: center;
  padding: 12px 0;
  margin-left: 0;
  margin-right: 0;
  width: 100%;
  gap: 0;
  border-radius: 0;
}

.sidebar.collapsed:not(:hover) .sidebar-nav-icon {
  margin: 0;
  font-size: 1.25rem;
}

/* ── Hover: expandir sidebar desde collapsed ── */
.sidebar.collapsed:hover {
  width: var(--sidebar-width);
  z-index: 1100;
}

.sidebar.collapsed:hover .sidebar-brand {
  display: flex;
}

.sidebar.collapsed:hover .sidebar-user-container {
  padding: 14px 16px;
  justify-content: flex-start;
}

.sidebar.collapsed:hover .sidebar-user-texts {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.sidebar.collapsed:hover .sidebar-brand-meta {
  display: flex;
  opacity: 1;
  visibility: visible;
}

.sidebar.collapsed:hover .sidebar-nav-text {
  display: inline-block;
  opacity: 1;
  visibility: visible;
}

.sidebar.collapsed:hover .sidebar-nav-caret {
  display: inline-block;
  opacity: 0.9;
  visibility: visible;
}

.sidebar.collapsed:hover .sidebar-bottom {
  display: block;
}

.sidebar.collapsed:hover .sidebar-nav-item,
.sidebar.collapsed:hover .sidebar-nav-group-toggle {
  justify-content: flex-start;
  padding: 12px var(--sidebar-padding);
  margin-left: var(--sidebar-padding);
  margin-right: var(--sidebar-padding);
  width: calc(100% - 2 * var(--sidebar-padding));
  gap: 12px;
  border-radius: var(--sidebar-item-radius);
}

/* Restaurar submenus abiertos al hacer hover */
.sidebar.collapsed:hover .sidebar-nav-group.open .sidebar-submenu {
  display: grid;
  grid-template-rows: 1fr;
  max-height: 500px;
}

.sidebar.collapsed:hover .sidebar-nav-group.open .sidebar-submenu > * {
  visibility: visible;
}

/* ── Modern Brand Section ── */
.sidebar-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 16px;
  margin: 0;
  border-radius: var(--sidebar-radius);
  background: var(--sidebar-brand-bg);
  border: 1px solid var(--sidebar-brand-border);
  transition: var(--sidebar-item-transition);
  cursor: pointer;
  overflow: hidden;
}

.sidebar-brand:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.sidebar-brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.1rem;
  background: #ffffff;
  color: var(--fms-primary, #dc2626);
  border: 1px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
  transition: var(--sidebar-item-transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.brand-ms {
  transition: var(--sidebar-transition);
}

.sidebar.collapsed .brand-ms {
  display: none;
}

.sidebar.collapsed:hover .brand-ms {
  display: inline;
}

.sidebar-brand:hover .sidebar-brand-mark {
  transform: scale(1.05);
}

.sidebar-brand-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: var(--sidebar-transition);
  white-space: nowrap;
}

.sidebar.collapsed .sidebar-brand-meta {
  opacity: 0;
  visibility: hidden;
  transform: translateX(-10px);
}

.sidebar-brand-title {
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
  opacity: 0.95;
}

.sidebar-brand-subtitle {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.85;
}

/* ── Enhanced User Section ── */
.sidebar-user-container {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  min-height: 58px;
  transition: padding 0.3s ease;
}

.sidebar-user-avatar-wrapper {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: none;
}

.sidebar-user-avatar-img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  display: block;
}

.sidebar-user-avatar-init {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  text-align: center;
  line-height: 44px;
}

.sidebar-user-texts {
  flex: 1;
  min-width: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sidebar-user-name {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 10px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar.collapsed .sidebar-user-container {
  padding: 14px 0;
  justify-content: center;
}

.sidebar.collapsed .sidebar-user-texts {
  display: none;
  opacity: 0;
  visibility: hidden;
}

.sidebar.collapsed:hover .sidebar-user-container {
  padding: 14px 16px;
  justify-content: flex-start;
}

.sidebar.collapsed:hover .sidebar-user-texts {
  display: flex;
  opacity: 1;
  visibility: visible;
}

/* ── Modern Navigation ── */
.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px var(--sidebar-padding);
  margin: 0 var(--sidebar-padding);
  border-radius: var(--sidebar-item-radius);
  text-decoration: none;
  color: var(--sidebar-text-primary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: var(--sidebar-item-transition);
  position: relative;
  overflow: hidden;
  min-height: 48px;
  line-height: 1.4;
}

.sidebar-nav-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.sidebar-nav-item:hover::before {
  transform: translateX(100%);
}

.sidebar-nav-item:hover {
  background: var(--sidebar-nav-hover);
  border-color: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.30);
  transform: none;
}

.sidebar.collapsed:not(:hover) .sidebar-nav-item:hover {
  transform: none;
}

.sidebar:not(.collapsed) .sidebar-nav-item:hover,
.sidebar.collapsed:hover .sidebar-nav-item:hover {
  transform: translateX(2px);
}

.sidebar-nav-item.active {
  background: var(--sidebar-nav-active);
  border-color: var(--sidebar-nav-border);
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(var(--fms-primary-rgb, 220, 38, 38), 0.15);
}

.sidebar-nav-item.active::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--fms-primary, #dc2626);
  border-radius: 0 2px 2px 0;
}

.sidebar-nav-icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: var(--sidebar-item-transition);
}

.sidebar-nav-item:hover .sidebar-nav-icon {
  transform: scale(1.1);
}

.sidebar-nav-text {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: var(--sidebar-transition);
}

.sidebar.collapsed .sidebar-nav-group-toggle .sidebar-nav-caret {
  opacity: 0;
  visibility: hidden;
}

.sidebar.collapsed:hover .sidebar-nav-group-toggle .sidebar-nav-caret {
  opacity: 1;
  visibility: visible;
}

/* ── Enhanced Navigation Groups ── */
.sidebar-nav-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-nav-group-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px var(--sidebar-padding);
  margin: 0 var(--sidebar-padding);
  width: calc(100% - 2 * var(--sidebar-padding));
  border-radius: var(--sidebar-item-radius);
  background: transparent;
  border: 1px solid transparent;
  color: var(--sidebar-text-primary);
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: var(--sidebar-item-transition);
  position: relative;
  min-height: 48px;
  line-height: 1.4;
  box-sizing: border-box;
}

.sidebar-nav-group-toggle:hover {
  background: var(--sidebar-nav-hover);
  border-color: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.30);
}

.sidebar.collapsed:not(:hover) .sidebar-nav-group-toggle:hover {
  transform: none;
}

.sidebar:not(.collapsed) .sidebar-nav-group-toggle:hover,
.sidebar.collapsed:hover .sidebar-nav-group-toggle:hover {
  transform: translateX(2px);
}

.sidebar-nav-group-toggle .sidebar-nav-caret {
  margin-left: auto;
  transition: transform 0.3s ease;
  opacity: 0.9;
}

.sidebar-nav-group.open .sidebar-nav-caret {
  transform: rotate(180deg);
}

.sidebar-submenu {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
  padding: 2px 0;
  margin: 0;
  overflow: hidden;
  max-height: 0;
}

.sidebar-submenu > * {
  overflow: hidden;
  min-height: 0;
  visibility: hidden;
}

.sidebar-nav-group.open .sidebar-submenu > * {
  min-height: auto;
  visibility: visible;
}

.sidebar-nav-group.open .sidebar-submenu {
  grid-template-rows: 1fr;
  max-height: 500px;
}

.sidebar-submenu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px var(--sidebar-padding) 12px calc(var(--sidebar-padding) + 24px);
  margin: 2px 0;
  border-radius: 10px;
  text-decoration: none;
  color: var(--sidebar-text-secondary);
  font-size: 13px;
  font-weight: 600;
  border: 1px solid transparent;
  background: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.08);
  transition: var(--sidebar-item-transition);
  min-height: 46px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-submenu-item:hover {
  background: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.15);
  border-color: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.25);
  transform: translateX(2px);
}

.sidebar-submenu-item.active {
  background: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.20);
  border-color: rgba(var(--fms-primary-rgb, 220, 38, 38), 0.35);
  color: var(--sidebar-text-primary);
}

/* ── Enhanced Bottom Section ── */
.sidebar-bottom {
  margin-top: auto;
  padding: var(--sidebar-padding);
  padding-top: 0;
}

.sidebar-note {
  padding: 14px;
  border-radius: var(--sidebar-radius);
  background: var(--sidebar-brand-bg);
  border: 1px solid var(--sidebar-brand-border);
  transition: var(--sidebar-item-transition);
}

.sidebar-note:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.sidebar-note-title {
  font-weight: 800;
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--sidebar-text-primary);
}

.sidebar-note-text {
  font-size: 12px;
  font-weight: 400;
  opacity: 0.9;
  line-height: 1.4;
  color: var(--sidebar-text-secondary);
}

/* ── Modern Close Button (Mobile) ── */
.sidebar-close {
  display: none;
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--sidebar-text-primary);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--sidebar-item-transition);
  z-index: 10;
}

.sidebar-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

/* ── Enhanced Logout Section ── */
.sidebar-logout {
  margin: var(--sidebar-gap) var(--sidebar-padding);
  padding-top: var(--sidebar-gap);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logout-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--sidebar-item-radius);
  text-decoration: none;
  color: rgba(255, 100, 100, 0.9);
  font-weight: 800;
  font-size: 13px;
  transition: var(--sidebar-item-transition);
  border: 1px solid transparent;
}

.sidebar.collapsed:not(:hover) .sidebar-logout-link {
  justify-content: center;
  padding: 12px 0;
}

.sidebar.collapsed:not(:hover) .sidebar-logout-link .sidebar-nav-text {
  display: none;
}

/* ── Modern Toggle Button ── */
.sidebar-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--sidebar-item-radius);
  border: 1px solid var(--fms-border);
  background: var(--fms-surface);
  color: var(--fms-text);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--sidebar-item-transition);
  box-shadow: var(--shadow-soft);
}

.sidebar-toggle:hover {
  background: var(--fms-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* ── Enhanced Overlay ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1040;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

/* ══════════════════════════════════════
   RESPONSIVE — Mobile (< 768px)
   ══════════════════════════════════════ */
@media (max-width: 767.98px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .sidebar-close {
    display: flex;
  }
  
  .sidebar-toggle {
    display: flex;
  }
  
  .sidebar.collapsed {
    width: var(--sidebar-width);
  }
  
  .sidebar.collapsed .sidebar-brand-meta,
  .sidebar.collapsed .sidebar-user-texts,
  .sidebar.collapsed .sidebar-nav-text,
  .sidebar.collapsed .sidebar-bottom {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

/* ══════════════════════════════════════
   RESPONSIVE — Tablet (768px – 991px)
   ══════════════════════════════════════ */
@media (min-width: 768px) and (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .sidebar-close {
    display: flex;
  }
  
  .sidebar-toggle {
    display: flex;
  }
  
  .sidebar.collapsed {
    width: var(--sidebar-width);
  }
  
  .sidebar.collapsed .sidebar-brand-meta,
  .sidebar.collapsed .sidebar-user-texts,
  .sidebar.collapsed .sidebar-nav-text,
  .sidebar.collapsed .sidebar-bottom {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

/* ══════════════════════════════════════
   ANIMATIONS & MICRO-INTERACTIONS
   ══════════════════════════════════════ */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.sidebar-nav-item {
  animation: slideInLeft 0.3s ease-out;
  animation-fill-mode: both;
}

.sidebar-nav-item:nth-child(1) { animation-delay: 0.05s; }
.sidebar-nav-item:nth-child(2) { animation-delay: 0.1s; }
.sidebar-nav-item:nth-child(3) { animation-delay: 0.15s; }
.sidebar-nav-item:nth-child(4) { animation-delay: 0.2s; }
.sidebar-nav-item:nth-child(5) { animation-delay: 0.25s; }

/* ── Focus States for Accessibility ── */
.sidebar-nav-item:focus-visible,
.sidebar-nav-group-toggle:focus-visible,
.sidebar-logout-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

/* ── Print Styles ── */
@media print {
  .sidebar,
  .sidebar-overlay,
  .sidebar-toggle {
    display: none !important;
  }
}