.kreta-header {
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--background);
  gap: 1.5rem;
}

.school-info {
  display: flex;
  flex-direction: column;
  min-width: 200px;
  flex-shrink: 0;
}

.logo-text {
  color: var(--text-primary);
  font-size: 22px;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo {
  width: 24px;
  height: 24px;
  border-radius: 8px;
}

.school-details {
  color: var(--text-secondary);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
  margin-top: 0.25rem;
}

.kreta-nav {
  display: flex;
  justify-content: center;
  flex: 1;
}

.nav-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  white-space: nowrap;
  border-radius: 12px;
  transition: all 0.2s ease;
  gap: 0.5rem;
  background: var(--button-secondaryFill);
  box-shadow: 0px 1px var(--shadow-blur, 2px) 0px var(--accent-shadow);
}

.nav-item:hover {
  color: var(--text-primary);
  background-color: var(--accent-15);
  text-decoration: none;
}

.nav-item.active {
  color: var(--accent-accent);
  background: var(--accent-15);
}

.nav-item img,
.nav-item svg {
  width: 20px;
  height: 20px;
}

.nav-item.active img {
  filter: var(--icon-filter) !important;
}

.user-profile {
  position: relative;
  flex-shrink: 0;
}

.user-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--button-secondaryFill);
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 12px;
  transition: all 0.2s ease;
  box-shadow: 0px 1px var(--shadow-blur, 2px) 0px var(--accent-shadow);
}

.user-dropdown-btn:hover {
  background: var(--accent-15);
}

.user-info {
  text-align: right;
}

.user-name {
  display: block;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
}

.nav-logout-timer {
  display: block;
  color: var(--text-secondary);
  font-size: 12px;
}

.user-avatar-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-avatar-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--accent-accent);
}

.dropdown-arrow {
  width: 16px;
  height: 16px;
  fill: var(--text-secondary);
  transition: transform 0.2s ease;
}

.user-dropdown-btn.open .dropdown-arrow {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--card-card);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  min-width: 180px;
  display: none;
  z-index: 1000;
  overflow: hidden;
}

.user-dropdown.show {
  display: block;
  animation: dropdownShow 0.2s ease;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 12px 16px;
  color: var(--text-primary);
  text-decoration: none;
  transition: background-color 0.2s;
  font-size: 14px;
}

.dropdown-item:hover {
  background: var(--hover);
  color: var(--accent-accent);
  text-decoration: none;
}

.dropdown-item img {
  width: 18px;
  height: 18px;
  filter: var(--icon-filter);
}

.dropdown-item:hover img {
  filter: brightness(0) saturate(100%) invert(25%) sepia(50%) saturate(2000%) hue-rotate(90deg) brightness(90%) contrast(95%);
}

@keyframes dropdownShow {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes dropdownShowUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-header,
.mobile-bottom-nav,
.mobile-user-dropdown {
  display: none;
}

@media (max-width: 900px) {
  .kreta-header {
    display: none;
  }

  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background-color: var(--background);
    gap: 1rem;
  }

  .mobile-header .school-info {
    align-items: center;
    text-align: center;
    min-width: auto;
  }

  .mobile-header .logo-text {
    font-size: 20px;
    justify-content: center;
  }

  .mobile-header .school-details {
    max-width: 280px;
    text-align: center;
  }

  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--background);
    padding: 8px 16px;
    padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    z-index: 1000;
    box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.1);
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    border-radius: 20px 20px 0 0;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 8px 4px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 10px;
    font-weight: 500;
    border-radius: 12px;
    transition: all 0.2s ease;
    gap: 4px;
    background: var(--card-card);
    box-shadow: 0px 1px var(--shadow-blur, 2px) 0px var(--accent-shadow);
  }

  .mobile-nav-item:hover {
    color: var(--text-primary);
    background: var(--accent-15);
    text-decoration: none;
  }

  .mobile-nav-item.active {
    color: var(--accent-accent);
    background: var(--accent-15);
  }

  .mobile-nav-item img {
    width: 22px;
    height: 22px;
    transition: filter 0.2s ease;
  }

  .mobile-nav-item.active img {
    filter: var(--icon-filter) !important;
  }

  .mobile-nav-item.active {
    color: var(--accent-accent) !important;
    background: var(--accent-15);
  }

  .mobile-user-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 8px 4px;
    color: var(--text-secondary);
    background: var(--card-card);
    box-shadow: 0px 1px var(--shadow-blur, 2px) 0px var(--accent-shadow);
    border: none;
    font-size: 10px;
    font-weight: 500;
    border-radius: 12px;
    transition: all 0.2s ease;
    gap: 4px;
    cursor: pointer;
  }

  .mobile-user-btn:hover {
    color: var(--text-primary);
    background: var(--accent-15);
  }

  .mobile-user-btn.active {
    color: var(--accent-accent);
    background: var(--accent-15);
  }

  .mobile-user-btn .user-avatar-icon {
    width: 22px;
    height: 22px;
  }

  .mobile-user-btn .user-avatar-icon svg {
    width: 14px;
    height: 14px;
  }

  .mobile-user-dropdown {
    position: fixed;
    bottom: calc(70px + env(safe-area-inset-bottom, 0px));
    right: 12px;
    background: var(--card-card);
    border-radius: 12px;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    display: none;
    z-index: 1001;
    overflow: hidden;
  }

  .mobile-user-dropdown.show {
    display: block;
    animation: dropdownShowUp 0.2s ease;
  }

  .mobile-dropdown-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--hover);
    text-align: center;
  }

  .mobile-dropdown-header .user-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
  }

  .mobile-dropdown-header .nav-logout-timer {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
  }

  .mobile-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.2s;
    font-size: 14px;
  }

  .mobile-dropdown-item:hover {
    background: var(--hover);
    color: var(--accent-accent);
    text-decoration: none;
  }

  .mobile-dropdown-item img {
    width: 18px;
    height: 18px;
    filter: var(--icon-filter);
  }

  .mobile-dropdown-item:hover img {
    filter: brightness(0) saturate(100%) invert(25%) sepia(50%) saturate(2000%) hue-rotate(90deg) brightness(90%) contrast(95%);
  }

  body {
    padding-bottom: calc(70px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 480px) {
  .mobile-header {
    padding: 0.75rem;
  }

  .mobile-header .logo-text {
    font-size: 18px;
  }

  .mobile-header .school-details {
    font-size: 11px;
    max-width: 220px;
  }

  .mobile-nav-item {
    padding: 6px 4px;
    font-size: 9px;
  }

  .mobile-nav-item img {
    width: 20px;
    height: 20px;
  }

  .mobile-user-btn {
    padding: 6px 4px;
    font-size: 9px;
  }

  .mobile-user-btn .user-avatar-icon {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 360px) {
  .mobile-header .logo-text {
    font-size: 16px;
  }

  .mobile-header .school-details {
    font-size: 10px;
    max-width: 180px;
  }

  .mobile-nav-item span {
    display: none;
  }

  .mobile-user-btn span {
    display: none;
  }

  .mobile-nav-item img {
    width: 24px;
    height: 24px;
  }

  .mobile-user-btn .user-avatar-icon {
    width: 24px;
    height: 24px;
  }
}