/* Mobile fixes - overrides all other styles */
:root {
  --vh: 1vh;
}

@media (max-width: 768px) {
  /* Fix layout issues */
  body {
    overflow-x: hidden;
    font-size: 14px;
  }
  
  /* Sidebar fixes */
  .sidebar {
    width: 85%;
    max-width: 300px;
    left: -100%;
    top: 0;
    height: 100vh; /* Fallback */
    height: calc(var(--vh, 1vh) * 100);
    position: fixed;
    z-index: 9999;
    background-color: #fff;
    box-shadow: none;
    transition: all 0.3s ease;
  }
  
  .sidebar.active {
    left: 0;
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
  }
  
  /* Main content fixes */
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    padding: 10px !important;
  }
  
  /* Mobile menu toggle */
  .mobile-menu-toggle {
    display: block !important;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 10000;
    background-color: #2563eb;
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    border: none;
    font-size: 18px;
  }
  
  /* Overlay */
  .mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100vh; /* Fallback */
    height: calc(var(--vh, 1vh) * 100);
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  
  .mobile-overlay.active {
    display: block;
    opacity: 1;
  }
  
  /* Top nav */
  .top-nav {
    padding: 10px 10px 10px 60px !important;
    margin-bottom: 15px !important;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  /* Welcome section */
  .welcome-section {
    padding: 15px !important;
    margin-bottom: 15px !important;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  }
  
  .welcome-section h1 {
    font-size: 20px !important;
    margin-bottom: 5px !important;
  }
  
  .welcome-section p {
    font-size: 14px !important;
    margin-bottom: 0 !important;
  }
  
  /* Grid layouts */
  .stats-grid,
  .dashboard-grid,
  .feature-grid,
  .papers-grid,
  .analytics-grid,
  .progress-grid,
  .tasks-container,
  .comparison-grid,
  .interviews-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 15px !important;
    margin-bottom: 15px !important;
  }
  
  /* Cards */
  .stat-card,
  .dashboard-card,
  .feature-card,
  .ai-insights,
  .paper-card,
  .analytics-card,
  .tasks-card,
  .comparison-card,
  .interview-card,
  .upcoming-interviews,
  .feedback-card,
  .leaderboard,
  .rank-card,
  .calendar-container,
  .progress-container {
    padding: 15px !important;
    margin-bottom: 15px !important;
    border-radius: 10px !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1) !important;
  }
  
  /* Card headers */
  .card-header,
  .comparison-header,
  .tasks-header,
  .ai-header,
  .upcoming-header,
  .feedback-header,
  .leaderboard-header,
  .calendar-header,
  .progress-header {
    padding: 10px 0 !important;
    margin-bottom: 10px !important;
  }
  
  /* Tables */
  .leaderboard-table,
  .upcoming-table {
    font-size: 12px !important;
  }
  
  .leaderboard-table th,
  .leaderboard-table td,
  .upcoming-table th,
  .upcoming-table td {
    padding: 8px !important;
  }
  
  /* Chat container */
  .chat-container {
    flex-direction: column !important;
    height: auto !important;
  }
  
  .topics-sidebar {
    width: 100% !important;
    max-height: 120px !important;
    overflow-y: auto !important;
    border-right: none !important;
    border-bottom: 1px solid rgba(0,0,0,0.1) !important;
  }
  
  .chat-main {
    height: calc(100vh - 350px) !important;
  }
  
  .chat-messages {
    max-height: calc(100vh - 450px) !important;
  }
  
  /* Calendar */
  .calendar-grid {
    display: grid !important;
    grid-template-columns: repeat(7, 1fr) !important;
    gap: 2px !important;
  }
  
  .calendar-day {
    padding: 2px !important;
    min-height: 40px !important;
  }
  
  .day-number {
    font-size: 10px !important;
  }
  
  .day-event {
    font-size: 6px !important;
    padding: 1px !important;
    margin-bottom: 1px !important;
  }
  
  /* Fix buttons */
  .start-btn,
  .schedule-btn,
  .upgrade-btn,
  .add-task-btn,
  .filter-btn {
    padding: 8px 15px !important;
    font-size: 12px !important;
  }
  
  /* Fix charts */
  .chart-container {
    height: 200px !important;
  }
  
  /* Fix font sizes */
  h1, h2, h3, h4, h5, h6 {
    line-height: 1.3 !important;
  }
  
  /* Fix touch targets */
  button, a, .task-checkbox input, .filter-btn, .topic-item {
    min-height: 44px !important;
    min-width: 44px !important;
  }
  
  /* Fix spacing */
  .dashboard-content {
    padding: 10px !important;
  }
  
  /* Fix scrolling */
  .chat-messages, .topics-sidebar {
    -webkit-overflow-scrolling: touch !important;
  }
  
  /* Fix sticky positioning */
  .top-nav {
    position: -webkit-sticky !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 90 !important;
  }
}