/* ========== АДАПТИВ ========== */
@media (max-width: 1024px) {
  :root { --message-max-width: 712px; --message-padding-horizontal: 36px; }
  .input-area { margin: auto 16px 0; }
  .premium-categories { width: 460px; }
  .premium-cat-card { min-width: 220px; }
}

@media (max-width: 768px) {
  .sidebar { position: fixed; left: -100%; top: 0; height: 100vh; height: 100dvh; width: var(--sider-width); max-width: 100vw; transition: left var(--transition-duration-slow) var(--ease-in-out); z-index: 1000; border-radius: 0; border: none; }
  .sidebar.open { left: 0; z-index: 50; }
  .sidebar-overlay.active { display: block; }
  .btn-toggle-sidebar { display: flex; }
  .btn-collapse-sidebar { display: none; }
  :root { --message-padding-horizontal: 16px; }
  
  .header { 
    padding: 0 10px; 
    height: 56px; 
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
  }
  .header-left { display: flex; align-items: center; gap: 4px; }
  .header-right { display: flex; align-items: center; gap: 4px; }
  
  .btn-toggle-sidebar { 
    font-size: 0; 
    width: 32px; 
    height: 32px; 
    position: relative; 
    background: transparent !important;
    border: none !important;
    color: transparent !important;
  }
  .btn-toggle-sidebar::before,
  .btn-toggle-sidebar::after {
    content: '';
    position: absolute;
    left: 5px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
  }
  .btn-toggle-sidebar::before { top: 10px; width: 22px; }
  .btn-toggle-sidebar::after { bottom: 10px; width: 14px; }
  
  .sidebar-close-btn {
    display: flex;
    font-size: 0 !important;
    width: 32px;
    height: 32px;
    position: absolute !important;
    left: auto !important;
    right: 12px !important;
    top: 10px !important;
    background: transparent !important;
    border: none !important;
    color: transparent !important;
  }
  .sidebar-close-btn::before,
  .sidebar-close-btn::after {
    content: '';
    position: absolute;
    left: 5px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
  }
  .sidebar-close-btn::before { top: 10px; width: 22px; }
  .sidebar-close-btn::after { bottom: 10px; width: 14px; }
  
  .mode-switch { 
    margin: 0;
    padding: 2px; 
    border-radius: 24px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  .mode-btn { padding: 5px 10px; font-size: 11px; border-radius: 22px; }
  
  .requests-counter { display: none !important; }
  .chat-title { display: none; }
  .chat-subtitle { display: none; }
  .btn-login-header { display: none; }
  .online-header { display: none; }
  #btnOpenLang { display: none !important; }
  #tariffBadge { font-size: 9px !important; padding: 3px 7px !important; margin-right: 0 !important; }
  #btnTheme { width: 28px !important; height: 28px !important; }
  
  .btn-new-chat-header { 
    display: flex; 
    width: 36px; 
    height: 36px; 
    border-radius: 10px;
    background: rgba(0,113,227,0.1);
    color: #0071e3;
    border: 1px solid rgba(0,113,227,0.15);
    margin-right: 0;
    margin-left: 6px;
  }
  .btn-new-chat-header span { display: none; }
  .btn-new-chat-header:hover { 
    background: rgba(0,113,227,0.2); 
    transform: scale(1.05); 
    border-color: rgba(0,113,227,0.3);
  }
  
  .input-area { margin: auto 8px 0; padding-bottom: max(12px, env(safe-area-inset-bottom, 12px)); background: var(--bg-base); }
  .input-wrapper { padding: 10px 10px; border-radius: 16px; }
  .input-wrapper textarea { min-height: 44px; font-size: 15px; padding: 8px 0; }
  .input-action-btn { width: 28px; height: 28px; padding: 4px; margin-bottom: 4px; }
  .btn-send { width: 28px; height: 28px; margin-bottom: 4px; }
  .input-hint { display: none; }
  
  .messages { padding-bottom: 0; }
  .message { padding: 0 var(--message-padding-horizontal); padding-bottom: 16px; }
  .message.user .message-content { max-width: calc(100% - 48px); font-size: 14px; padding: 8px 14px; }
  .message-content { font-size: 14px; }
  .message-content pre { padding: 12px; font-size: 12px; }
  .message.user + .message.assistant { padding-top: 20px; }
  
  .welcome-title { font-size: 20px; line-height: 28px; }
  .welcome-subtitle { font-size: 13px; padding: 0 8px; }
  .welcome-scroll-hint { display: none; }
  .welcome-online { font-size: 12px; }
  .btn-login-welcome { font-size: 14px; padding: 10px 24px; }
  
  .carousel-arrow { display: none; }
  .carousel-dots { display: none !important; }
  .premium-categories-wrapper::before, .premium-categories-wrapper::after { display: none; }
  .premium-categories-wrapper { max-width: 100%; padding: 0 8px; }
  .premium-categories { width: 100%; overflow-x: auto; padding: 4px 0; }
  .premium-cat-card { min-width: 140px; min-height: auto; padding: 10px 12px; gap: 6px; border-radius: 14px; }
  .premium-cat-card .premium-cat-icon { font-size: 20px; }
  .premium-cat-card .premium-cat-name { font-size: 11px; }
  .premium-cat-card .premium-cat-desc { font-size: 9px; }
  .premium-cat-tag { font-size: 8px; }
  .trending-questions { padding: 0 8px; }
  
  .art-carousel-card { min-width: 120px; }
  .art-carousel-image { width: 120px; height: 150px; }
  .art-carousel-placeholder { font-size: 40px; }
  .art-carousel-label { font-size: 11px; padding: 8px 10px 12px; }
  
  .modal-content { width: 94vw; padding: 20px; margin: 0 auto; border-radius: var(--radius-xl); }
  .modal-wide { width: 96vw; }
  .modal-header h2 { font-size: 17px; }
  .modal-close { width: 36px; height: 36px; font-size: 22px; }
  
  .btn-all-categories { margin-top: 16px; margin-bottom: 20px; font-size: 12px; padding: 7px 14px; order: 11; }
  
  .sidebar .logo img { display: none; }
  
  .recent-experts-block { max-width: 100%; margin-left: 0; padding: 0 12px; order: 10; }
  .recent-expert-item { max-width: 100%; }
  
  .art-styles-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .art-style-placeholder { font-size: 32px; }
  .art-style-name { font-size: 11px; padding: 6px 8px; }
  
  .tariffs-grid-new { grid-template-columns: 1fr; }
  .tariff-card-new { padding: 20px 16px; }
  
  .scroll-to-bottom { width: 28px; height: 28px; right: 4px; }
  
  .art-download-btn { 
    padding: 6px 12px; 
    font-size: 11px; 
    border-radius: 8px; 
    bottom: 8px; 
    right: 8px; 
  }
  .art-download-btn span { font-size: 11px; }
  .art-download-btn svg { width: 16px; height: 16px; }
}

@media (max-width: 480px) {
  .header { padding: 0 6px; height: 52px; }
  .header-left { gap: 2px; }
  .header-right { gap: 2px; }
  
  .mode-switch { 
    margin: 0;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  .mode-btn { padding: 4px 8px; font-size: 10px; }
  
  #tariffBadge { font-size: 8px !important; padding: 2px 5px !important; }
  #btnTheme { width: 26px !important; height: 26px !important; }
  .btn-new-chat-header { width: 32px; height: 32px; margin-left: 4px; }
  
  :root { --message-padding-horizontal: 12px; }
  .welcome-title { font-size: 18px; line-height: 26px; }
  .welcome-subtitle { font-size: 12px; }
  
  .input-area { margin: auto 4px 0; padding-bottom: max(10px, env(safe-area-inset-bottom, 10px)); }
  .input-wrapper { padding: 8px 8px; border-radius: 14px; }
  .input-wrapper textarea { font-size: 14px; min-height: 40px; }
  .input-action-btn { width: 26px; height: 26px; }
  .btn-send { width: 26px; height: 26px; }
  
  .premium-cat-card { min-width: 120px; padding: 8px 10px; }
  .art-carousel-card { min-width: 100px; }
  .art-carousel-image { width: 100px; height: 130px; }
  
  .modal-content { padding: 16px; width: 98vw; max-height: 80vh; border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .modal-header h2 { font-size: 16px; }
  .modal-close { width: 40px; height: 40px; font-size: 24px; }
  
  .btn-all-categories { margin-top: 14px; margin-bottom: 18px; }
  .update-banner { flex-direction: column; text-align: center; left: 8px; right: 8px; bottom: 8px; }
  .update-banner button { width: 100%; }
  
  .art-styles-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  
  .art-download-btn { 
    padding: 5px 10px; 
    font-size: 10px; 
    bottom: 6px; 
    right: 6px; 
  }
  .art-download-btn svg { width: 14px; height: 14px; }
}

@supports (-webkit-touch-callout: none) {
  .input-area { position: sticky; bottom: 0; }
  .messages { padding-bottom: 0; }
}