/* Layout CSS - Page structure and layout components */

/* Main Container */
.container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* Sidebar Styles */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--sidebar-background);
  border-right: 1px solid var(--divider);
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  padding-top: var(--space-lg);
  box-shadow: var(--shadow-sm);
  z-index: 100;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  height: 73px;
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--divider);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.sidebar-logo:hover {
  color: var(--primary-dark);
}

.sidebar-logo .logo-circle {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverted);
  margin-right: var(--space-sm);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.sidebar-nav {
  list-style: none;
  padding: 0 var(--space-xs);
}

.sidebar-nav li {
  margin-bottom: var(--space-xs);
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: 500;
}

.sidebar-nav a:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  transform: translateX(2px);
}

.sidebar-nav a.active {
  background: linear-gradient(to right, var(--primary-light), rgba(219, 234, 254, 0.4));
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.sidebar-nav a i {
  margin-right: var(--space-sm);
  width: 24px;
  transition: transform var(--transition-fast);
}

.sidebar-nav a:hover i {
  transform: scale(1.1);
}


/* Sidebar Footer */
.sidebar-footer {
  margin-top: auto;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--divider);
}

.sidebar-footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.sidebar-footer-link:hover {
  color: var(--primary);
}

.sidebar-footer-link [data-lucide] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Main Content Area */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  padding: var(--space-lg);
  transition: margin-left var(--transition-normal);
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 73px;
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--divider);
  position: relative;
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  position: relative;
  display: inline-flex;
  align-items: center;
}



.user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.notifications {
  position: relative;
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.notifications:hover {
  background-color: var(--primary-light);
}

.notifications i {
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: color var(--transition-fast);
}

.notifications:hover i {
  color: var(--primary);
}

.notification-count {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--accent);
  color: white;
  font-size: 0.7rem;
  min-width: 18px;
  height: 18px;
  padding: 0 var(--space-2xs);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

.profile-button {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
}

.profile-button:hover {
  background-color: var(--primary-light);
  transform: scale(1.05);
}

.profile-button i {
  color: var(--primary);
  font-size: 2.2rem;
  transition: color var(--transition-fast);
}

.profile-button [data-lucide] {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
  color: var(--primary);
}

.profile-button:hover i {
  color: var(--primary-dark);
}

/* Child selector / tab interface */
.child-selector {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--divider);
}

.tabs-container {
  display: flex;
  gap: var(--space-xs);
}

.child-tab {
  background: none;
  border: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.child-tab:hover {
  color: var(--primary);
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

.child-tab.active {
  color: var(--primary);
  background-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}

.child-tab.active::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.contact-tutors-btn {
  margin-left: auto;
}

/* Responsive Layout */
@media (max-width: 768px) {
  .sidebar {
    width: 60px;
    overflow: visible;
    z-index: 100;
    transition: all var(--transition-normal);
  }
  
  .sidebar:hover {
    width: 240px;
    box-shadow: var(--shadow-lg);
  }
  
  .sidebar-logo span, .sidebar-nav span, .sidebar-footer-link span {
    opacity: 0;
    white-space: nowrap;
    transition: opacity 0.2s ease;
  }

  .sidebar:hover .sidebar-logo span,
  .sidebar:hover .sidebar-nav span,
  .sidebar:hover .sidebar-footer-link span {
    opacity: 1;
    display: inline;
  }
  
  
  .main-content {
    margin-left: 60px;
    width: calc(100% - 60px);
    transition: margin-left var(--transition-normal), width var(--transition-normal);
  }
}

/* Mobile Layout */
@media (max-width: 480px) {
  .container {
    position: relative;
  }
  
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    transform: translateX(-100%);
    width: 240px;
    z-index: 1000;
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
  }
  
  .sidebar.active {
    transform: translateX(0);
  }
  
  .sidebar-logo span,
  .sidebar-nav span,
  .sidebar-footer-link span {
    opacity: 1;
    display: inline;
  }
  
  
  .main-content {
    margin-left: 0;
    width: 100%;
  }
  
  .mobile-menu-toggle {
    display: block;
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    z-index: 1001;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
  }
  
  .mobile-menu-toggle:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
  }
  
  .mobile-menu-toggle:active {
    transform: translateY(1px);
    box-shadow: var(--shadow-sm);
  }
  
  .header {
    padding-left: 60px;
  }
}

/* Skip Navigation Link */
.skip-nav {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-nav:focus {
    position: fixed;
    top: 10px;
    left: 10px;
    width: auto;
    height: auto;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    z-index: 10000;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    box-shadow: var(--shadow-md);
}