body {
  font-family: "Inter", sans-serif;
}

.sidebar-transition {
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.bg-aqua-gradient {
  background: linear-gradient(135deg, #0ea5e9 0%, #14b8a6 100%);
}

/* Smooth text fade — keep elements IN FLOW to prevent layout jump */
.menu-text {
  display: inline-block;
  max-width: 180px;
  overflow: hidden;
  white-space: nowrap;
  opacity: 1;
  transition:
    max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease,
    margin 0.3s ease;
}

.collapsed .menu-text {
  max-width: 0;
  opacity: 0;
  margin-left: 0 !important;
  pointer-events: none;
}

/* Group titles — collapse height smoothly */
.group-title {
  display: block;
  max-height: 1.5em;
  opacity: 1;
  overflow: hidden;
  transition:
    max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.2s ease,
    margin 0.3s ease;
}

.collapsed .group-title {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  margin-bottom: 0;
  pointer-events: none;
}

/* Group dividers */
.group-divider {
  border-top: 1px solid transparent;
  margin: 0;
  transition:
    border-color 0.3s ease,
    margin 0.3s ease;
}

.collapsed .group-divider {
  display: block;
  border-top-color: rgba(255, 255, 255, 0.1);
  margin: 1rem 0.5rem;
}

/* Nav items — smooth padding & centering */
.nav-item {
  position: relative;
  transition:
    padding 0.3s ease,
    justify-content 0.3s ease,
    gap 0.3s ease;
}

.collapsed .nav-item {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
  gap: 0;
}

/* Nav group spacing — smooth transition */
#sidebar nav>div {
  transition:
    margin 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Nav padding transition when collapsed */
#sidebar nav {
  transition: padding 0.3s ease;
}

.collapsed nav {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

/* Hide scrollbar when collapsed */
.collapsed nav {
  overflow: visible !important;
}

.collapsed nav::-webkit-scrollbar {
  display: none;
}

.collapsed nav {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Footer — smooth padding transition */
.sidebar-footer {
  transition: padding 0.3s ease;
}

.collapsed .sidebar-footer {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.collapsed .sidebar-footer .user-card {
  justify-content: center;
  padding: 0.25rem;
  width: fit-content;
  margin: 0 auto;
  gap: 0;
  border-radius: 9999px;
  background: transparent;
  border-color: transparent;
}

.collapsed .sidebar-footer .user-card img {
  margin: 0 auto;
}

.collapsed .sidebar-footer button.nav-item {
  width: auto;
  padding: 0.75rem;
}

/* Tooltip for collapsed sidebar items */
.collapsed [data-title] {
  position: relative;
}

/* Tooltip bubble */
.collapsed [data-title]:hover::after {
  content: attr(data-title);
  position: absolute;
  left: calc(100% + 16px);
  top: 50%;
  transform: translateY(-50%);
  background: #0f172a;
  color: #f8fafc;
  padding: 8px 14px;
  border-radius: 0.5rem;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  z-index: 100;
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
  pointer-events: none;
  animation: tooltipIn 0.18s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Tooltip arrow */
.collapsed [data-title]:hover::before {
  content: "";
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: #0f172a;
  z-index: 100;
  pointer-events: none;
  animation: tooltipIn 0.18s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes tooltipIn {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(-6px);
  }

  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

/* Toggle button icon rotation */
#toggle-sidebar svg {
  transition: transform 0.3s ease;
}

.sidebar-collapsed-active #toggle-sidebar svg {
  transform: rotate(180deg);
}

/* Mobile overlay */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 40;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 16rem !important;
  }

  #sidebar.mobile-open {
    transform: translateX(0);
  }

  #sidebar.collapsed {
    transform: translateX(-100%);
  }
}

/* Custom Scrollbar for dark sidebar */
.no-scrollbar::-webkit-scrollbar {
  width: 4px;
}

.no-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

/* Sidebar itself should never show horizontal scrollbar */
#sidebar {
  overflow: hidden;
}

#sidebar.collapsed {
  overflow: visible;
}

#sidebar nav {
  overflow-x: hidden;
}

/* When pre-collapsed, skip transition and apply collapsed state instantly */
.sidebar-pre-collapsed #sidebar {
  width: 80px !important;
  transition: none !important;
}

.sidebar-pre-collapsed #sidebar .menu-text {
  max-width: 0;
  opacity: 0;
  margin-left: 0 !important;
  pointer-events: none;
  transition: none !important;
}

.sidebar-pre-collapsed #sidebar .group-title {
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  margin-bottom: 0;
  pointer-events: none;
  transition: none !important;
}

.sidebar-pre-collapsed #sidebar .group-divider {
  border-top-color: rgba(255, 255, 255, 0.1);
  margin: 1rem 0.5rem;
}

.sidebar-pre-collapsed #sidebar .nav-item {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
  gap: 0;
}

.sidebar-pre-collapsed #sidebar nav {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

/* Loading overlay animations */
.loading-spin {
  animation: loadingSpin 1.2s linear infinite;
}

.loading-spin-reverse {
  animation: loadingSpin 0.9s linear infinite reverse;
}

.loading-logo-pulse {
  animation: logoPulse 2s ease-in-out infinite;
}

.loading-dot {
  animation: dotBounce 1s ease-in-out infinite;
}

@keyframes loadingSpin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes logoPulse {

  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 10px 25px -5px rgba(14, 165, 233, 0.3);
  }

  50% {
    transform: scale(1.06);
    box-shadow: 0 10px 35px -5px rgba(14, 165, 233, 0.5);
  }
}

@keyframes dotBounce {

  0%,
  80%,
  100% {
    transform: scale(0.4);
    opacity: 0.3;
  }

  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ==================== Custom Select / Dropdown Styles ==================== */
select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  background-size: 14px;
  padding-right: 2rem !important;
  cursor: pointer;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    background-color 0.15s ease;
}

select:hover {
  border-color: #cbd5e1;
  background-color: #f8fafc;
}

select:focus {
  border-color: #38bdf8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
  background-color: #fff;
  outline: none;
}

select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: #f1f5f9;
}

/* ==================== Custom Dropdown (replaces native select) ==================== */
.custom-select-wrap {
  position: relative;
  display: inline-block;
  width: 100%;
}

.custom-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  cursor: pointer;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  color: #334155;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    background-color 0.15s ease;
  user-select: none;
  line-height: 1.4;
  overflow: hidden;
}

.custom-select-trigger span {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  min-width: 0;
}

.custom-select-trigger:hover {
  border-color: #cbd5e1;
  background-color: #f8fafc;
}

.custom-select-wrap.open .custom-select-trigger {
  border-color: #38bdf8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
  background-color: #fff;
}

.custom-select-wrap.disabled .custom-select-trigger {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: #f1f5f9;
}

.field.error .custom-select-trigger {
  border-color: #ef4444;
}

.custom-select-trigger .cs-arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  margin-left: 6px;
  transition: transform 0.2s ease;
  color: #94a3b8;
}

.custom-select-wrap.open .cs-arrow {
  transform: rotate(180deg);
}

.custom-select-trigger .cs-placeholder {
  color: #94a3b8;
}

.custom-select-dropdown {
  position: fixed;
  z-index: 99999;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  box-shadow:
    0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  padding: 4px;
  max-height: 150px;
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-4px) scale(0.98);
  pointer-events: none;
  transition:
    opacity 0.15s ease,
    transform 0.15s ease;
}

.custom-select-dropdown.cs-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.custom-select-dropdown::-webkit-scrollbar {
  width: 4px;
}

.custom-select-dropdown::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

#enrollGradeDropdown::-webkit-scrollbar {
  width: 4px;
}

#enrollGradeDropdown::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 10px;
}

.custom-select-option {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 0.75rem;
  color: #475569;
  border-radius: 0.5rem;
  cursor: pointer;
  transition:
    background-color 0.1s ease,
    color 0.1s ease;
  user-select: none;
}

.custom-select-option:hover {
  background-color: #f0f9ff;
  color: #0369a1;
}

.custom-select-option.selected {
  background-color: #e0f2fe;
  color: #0369a1;
  font-weight: 600;
}

.custom-select-option.selected::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-left: auto;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%230369a1' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

/* Searchable custom select */
.custom-select-search {
  display: block;
  width: 100%;
  padding: 7px 10px;
  font-size: 0.8rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  outline: none;
  margin-bottom: 4px;
  box-sizing: border-box;
  color: #334155;
  background: #f8fafc;
}

.custom-select-search:focus {
  border-color: #0ea5e9;
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.15);
}

.custom-select-search::placeholder {
  color: #94a3b8;
}

.custom-select-options-list {
  max-height: 180px;
  overflow-y: auto;
}

.custom-select-options-list::-webkit-scrollbar {
  width: 4px;
}

.custom-select-options-list::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

.custom-select-dropdown:has(.custom-select-search) {
  max-height: none;
  overflow: hidden;
}