/**
 * DeepSeek Fullscreen Chat - Premium CSS Styles
 * Ultra-professional responsive design with advanced animations
 * Version: 4.1 (Premium Edition)
 */

/* =============================================
   0. CSS Variables & Base Configuration
   ============================================= */
:root {
  /* Color System - Updated to match agents19.css */
  --color-primary: #3b82f6;
  --color-primary-rgb: 59, 130, 246;
  --color-primary-light: #6a8ff8;
  --color-primary-dark: #2563eb;
  --color-primary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);

  --color-secondary: #8b5cf6;
  --color-secondary-rgb: 139, 92, 246;
  --color-accent: #ec4899;
  --color-accent-rgb: 236, 72, 153;

  --color-text-primary: #1c1e21;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #8e8e93;
  --color-text-light: #f8fafc;

  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-bg-accent: #f0f9ff;
  --color-bg-card: #ffffff;
  --color-bg-glass: rgba(255, 255, 255, 0.8);

  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-error: #ef4444;
  --color-success: #34c759;
  --color-warning: #f59e0b;

  /* Dark Mode Colors */
  --color-dark-primary: #1e1e2e;
  --color-dark-secondary: #2a2b32;
  --color-dark-tertiary: #3e3f4b;
  --color-dark-text-primary: #f1f5f9;
  --color-dark-text-secondary: #cbd5e1;
  --color-dark-text-tertiary: #94a3b8;
  --color-dark-border: #334155;

  /* Typography */
  --font-family-base: 'SF Pro Display', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-family-monospace: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing System */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-xxl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.02);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-colored: 0 12px 28px rgba(var(--color-primary-rgb), 0.15);

  /* Transitions & Animations */
  --transition-speed-ultrafast: 100ms;
  --transition-speed-fast: 200ms;
  --transition-speed-normal: 300ms;
  --transition-speed-slow: 500ms;

  --easing-linear: cubic-bezier(0, 0, 1, 1);
  --easing-in: cubic-bezier(0.4, 0, 1, 1);
  --easing-out: cubic-bezier(0, 0, 0.2, 1);
  --easing-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --easing-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Layout Dimensions */
  --sidebar-width: 280px;
  --sidebar-width-expanded: 320px;
  --sidebar-width-collapsed: 0px;
  --header-height: 60px;
  --footer-height: 80px;

  /* Z-index System */
  --z-index-base: 0;
  --z-index-above: 1;
  --z-index-below: -1;
  --z-index-docked: 10;
  --z-index-sticky: 100;
  --z-index-overlay: 1000;
  --z-index-modal: 2000;
  --z-index-popover: 3000;
  --z-index-toast: 4000;
  --z-index-tooltip: 5000;
}

/* =============================================
   1. Base Styles & Reset
   ============================================= */
.deepseek-fullscreen-mode {
  /* Reset */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
  }

  /* Base Typography */
  font-family: var(--font-family-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;

  /* Base Colors */
  color: var(--color-text-primary);
  background-color: white;

  /* Fullscreen Container */
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-index-modal);
  display: flex;
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  animation: deepseek-fade-scale-in var(--transition-speed-normal) var(--easing-out);
}

@keyframes deepseek-fade-scale-in {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* =============================================
   2. Professional Sidebar (Enhanced)
   ============================================= */
.deepseek-sidebar {
  /* Layout */
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100%;
  display: flex;
  flex-direction: column;

  /* Appearance */
  background-color: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);

  /* Scrolling */
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-primary-rgb), 0.3) transparent;

  /* Animation */
  transition: all var(--transition-speed-normal) var(--easing-in-out),
              transform var(--transition-speed-normal) var(--easing-bounce),
              box-shadow var(--transition-speed-normal) var(--easing-in-out);

  /* Positioning */
  z-index: var(--z-index-docked);

  /* Scrollbar Styling (WebKit) */
  &::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }

  &::-webkit-scrollbar-track {
    background: transparent;
    border-radius: var(--radius-full);
  }

  &::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    transition: background-color var(--transition-speed-fast) var(--easing-linear);

    &:hover {
      background-color: rgba(0, 0, 0, 0.2);
    }
  }

  /* Collapsed State */
  &.hidden-sidebar {
    margin-left: calc(var(--sidebar-width) * -1);
    min-width: var(--sidebar-width-collapsed);
  }

  /* Sidebar Header */
  .deepseek-sidebar-header {
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);

    /* Title Styling */
    .deepseek-sidebar-title {
      font-size: 18px;
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      display: flex;
      align-items: center;
      justify-content: space-between;

      /* Icon Styling */
      .sidebar-title-icon {
        margin-right: var(--space-xs);
        color: var(--color-primary);
        transition: transform var(--transition-speed-normal) var(--easing-bounce);
      }

      /* Interactive Elements */
      .sidebar-header-actions {
        display: flex;
        gap: var(--space-xs);
      }
    }
  }

  /* Sidebar Sections */
  .deepseek-sidebar-section {
    padding: 0 var(--space-md) var(--space-md);
    margin-bottom: var(--space-sm);

    /* Section Title */
    .section-title {
      font-size: 14px;
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-secondary);
      padding: var(--space-xs) var(--space-xs) var(--space-sm);
      margin-bottom: var(--space-xs);
      display: flex;
      align-items: center;
      position: relative;

      /* Icon Styling */
      &::before {
        font-family: "Font Awesome 5 Free";
        font-weight: 900;
        margin-right: var(--space-xs);
      }

      /* Count Badge */
      &::after {
        content: attr(data-count);
        margin-left: auto;
        font-size: 12px;
        font-weight: var(--font-weight-medium);
        background-color: var(--color-bg-tertiary);
        color: var(--color-text-secondary);
        padding: 2px var(--space-xs);
        border-radius: var(--radius-full);
      }

      /* Section Icons */
      &.section-agents::before {
        content: "\f544"; /* Robot icon */
        color: var(--color-primary);
      }

      &.section-conversations::before {
        content: "\f0e6"; /* Conversation icon */
        color: var(--color-text-secondary);
      }
    }

    /* Lists Container */
    .sidebar-list-container {
      margin-bottom: var(--space-md);
      overflow-y: auto;

     
      /* Conversations List */
      &.conversations-list {
        max-height: calc(100vh - 400px);
      }
    }
  }

  /* Sidebar Items (Agents & Conversations) */
  .sidebar-item {
    display: flex;
    align-items: center;
    padding: var(--space-sm);
    margin: var(--space-xxs) 0;
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-speed-normal) var(--easing-in-out);

    /* Hover State */
    &:hover {
      transform: translateX(5px);
      background-color: rgba(var(--color-primary-rgb), 0.08);

      .item-icon {
        transform: scale(1.05);
      }
    }

    /* Active State */
    &.active {
      background-color: rgba(var(--color-primary-rgb), 0.12);
      border-left: 3px solid var(--color-primary);

      /* Active Badge */
      .active-badge {
        display: inline-block;
        background-color: var(--color-primary);
        color: white;
        font-size: 10px;
        padding: 2px var(--space-xs);
        border-radius: var(--radius-full);
        margin-right: var(--space-xs);
        box-shadow: 0 2px 5px rgba(var(--color-primary-rgb), 0.3);
        animation: badge-pulse 2s infinite;
      }
    }

    /* Item Icon */
    .item-icon {
      width: 38px;
      height: 38px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: var(--space-sm);
      flex-shrink: 0;
      transition: transform var(--transition-speed-normal) var(--easing-bounce);

      /* Agent Icon Specific */
      &.agent-icon {
        color: white;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(255, 255, 255, 0.2);
      }

      /* Conversation Icon Specific */
      &.conversation-icon {
        background-color: var(--color-primary);
        color: white;
        border-radius: var(--radius-full);
      }
    }

    /* Item Info */
    .item-info {
      flex: 1;
      overflow: hidden;
      min-width: 0;

      .item-title {
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-primary);
        margin-bottom: 2px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .item-description {
        font-size: 12px;
        color: var(--color-text-tertiary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
    }

    /* Item Actions */
    .item-actions {
      display: flex;
      align-items: center;
      gap: var(--space-xs);
      opacity: 0;
      transition: opacity var(--transition-speed-fast) var(--easing-linear);

      /* Show actions on hover */
      .sidebar-item:hover & {
        opacity: 1;
      }

      /* Delete Button */
      .delete-item {
        background-color: transparent;
        border: none;
        color: var(--color-text-tertiary);
        width: 28px;
        height: 28px;
        border-radius: var(--radius-full);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all var(--transition-speed-normal) var(--easing-bounce);

        &:hover {
          background-color: #ffefef;
          color: var(--color-error);
          transform: rotate(5deg);
        }
      }
    }
  }

  /* Loading & Empty States */
  .sidebar-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) 0;
    text-align: center;
    color: var(--color-text-tertiary);

    /* Loading Spinner */
    &.sidebar-loading {
      .loading-spinner {
        width: 30px;
        height: 30px;
        border: 3px solid rgba(var(--color-primary-rgb), 0.1);
        border-radius: var(--radius-full);
        border-top-color: var(--color-primary);
        animation: spin 1s infinite linear;
        margin-bottom: var(--space-sm);
      }
    }

    /* Empty State Icon */
    .empty-state-icon {
      font-size: 24px;
      margin-bottom: var(--space-sm);
    }
  }
}

/* =============================================
   3. منطقة المحادثة الرئيسية (محسّنة)
   ============================================= */
.deepseek-main-chat {
  /* تخطيط أساسي */
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;

  /* تأثيرات الانتقال */
  transition: width var(--transition-speed-normal) var(--easing-in-out),
              margin-left var(--transition-speed-normal) var(--easing-in-out);

  /* وضع العرض الكامل */
  &.full-width {
    width: 100%;
    margin-left: 0;
    box-shadow: var(--shadow-lg);
  }

  /* حاوية المحادثة */
  #chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin: 0;
    border-radius: 0;
    border: none;
    background-color: var(--color-bg-secondary);
    transition: background-color var(--transition-speed-normal) var(--easing-out);
  }

  /* رأس المحادثة */
  #chat-header {
    flex-shrink: 0;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--color-bg-secondary);
    position: relative;
    z-index: var(--z-index-sticky);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-speed-normal) var(--easing-out);

    /* عنوان الرأس */
    .chat-header-title {
      font-size: 18px;
      font-weight: var(--font-weight-semibold);
      color: var(--color-text-primary);
      display: flex;
      align-items: center;
      gap: var(--space-sm);

      .header-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        border-radius: var(--radius-full);
        background: var(--color-primary-gradient);
        color: white;
        font-size: 16px;
        box-shadow: var(--shadow-sm);
        transition: transform var(--transition-speed-fast) var(--easing-bounce);
      }

      &:hover .header-icon {
        transform: scale(1.05);
      }
    }

    /* إجراءات الرأس */
    .chat-header-actions {
      display: flex;
      gap: var(--space-sm);
      align-items: center;

      .header-action {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: var(--radius-md);
        background-color: var(--color-bg-secondary);
        color: var(--color-text-secondary);
        border: 1px solid var(--color-border);
        cursor: pointer;
        transition: all var(--transition-speed-fast) var(--easing-out);
        position: relative;
        overflow: hidden;

        &::before {
          content: '';
          position: absolute;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background: var(--color-primary-gradient);
          opacity: 0;
          transition: opacity var(--transition-speed-fast) var(--easing-out);
          z-index: -1;
        }

        &:hover {
          color: var(--color-primary);
          border-color: var(--color-primary-light);
          transform: translateY(-2px);
          box-shadow: var(--shadow-sm);
        }

        &:active {
          transform: translateY(0) scale(0.95);
        }
      }

      .toggle-fullscreen {
        padding: var(--space-xs) var(--space-sm);
        border-radius: var(--radius-md);
        background-color: rgba(var(--color-primary-rgb), 0.05);
        color: var(--color-primary);
        font-weight: var(--font-weight-medium);
        font-size: 14px;
        display: flex;
        align-items: center;
        gap: var(--space-xxs);
        border: 1px solid rgba(var(--color-primary-rgb), 0.1);
        cursor: pointer;
        transition: all var(--transition-speed-fast) var(--easing-out);

        &:hover {
          background-color: rgba(var(--color-primary-rgb), 0.1);
          transform: translateY(-2px);
          box-shadow: var(--shadow-sm);
        }

        &:active {
          transform: translateY(0) scale(0.98);
        }

        i {
          font-size: 14px;
        }
      }
    }
  }

  /* منطقة عرض المحادثة (الرسائل) */
  #chat-output {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    background-color: var(--color-bg-secondary);
    position: relative;
    
    /* إظهار زر التمرير للأعلى عند الحاجة */
    .scroll-to-top {
      position: absolute;
      bottom: var(--space-lg);
      right: var(--space-lg);
      width: 40px;
      height: 40px;
      border-radius: var(--radius-full);
      background: var(--color-primary-gradient);
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      opacity: 0;
      transform: translateY(20px);
      transition: all var(--transition-speed-normal) var(--easing-bounce);
      box-shadow: var(--shadow-md);
      z-index: var(--z-index-docked);

      &.visible {
        opacity: 1;
        transform: translateY(0);
      }

      &:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
      }
    }

    /* تنسيق شريط التمرير */
    &::-webkit-scrollbar {
      width: 6px;
    }

    &::-webkit-scrollbar-track {
      background: transparent;
    }

    &::-webkit-scrollbar-thumb {
      background-color: rgba(var(--color-primary-rgb), 0.2);
      border-radius: var(--radius-full);

      &:hover {
        background-color: rgba(var(--color-primary-rgb), 0.4);
      }
    }

    /* تنسيق الرسائل */
    .message {
      margin-bottom: var(--space-md);
      transition: transform var(--transition-speed-fast) var(--easing-out),
                  box-shadow var(--transition-speed-fast) var(--easing-out);
      position: relative;

      &:hover {
        transform: translateY(-2px);
        z-index: var(--z-index-above);
      }

      /* تنسيق خاص لرسائل الذكاء الاصطناعي */
      &.ai-message {
        .message-content {
          position: relative;
          border-radius: var(--radius-lg);
          background-color: white;
          padding: var(--space-md) var(--space-lg);
          box-shadow: var(--shadow-xs);
          color: var(--color-text-primary);
          transition: all var(--transition-speed-fast) var(--easing-out);

          &::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            opacity: 0.7;
          }

          &:hover {
            box-shadow: var(--shadow-md);
          }
        }
      }

      /* تنسيق خاص لرسائل المستخدم */
      &.user-message {
        .message-content {
          background: var(--color-primary-gradient);
          color: white;
          border-radius: var(--radius-lg);
          padding: var(--space-md) var(--space-lg);
          box-shadow: var(--shadow-xs);
          transition: all var(--transition-speed-fast) var(--easing-out);

          &:hover {
            box-shadow: var(--shadow-md);
          }
        }
      }
    }

    /* مؤشر التحميل */
    .loading-indicator {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: var(--space-lg) 0;

      .ai-thinking {
        display: flex;
        align-items: center;
        background-color: rgba(var(--color-primary-rgb), 0.05);
        padding: var(--space-sm) var(--space-md);
        border-radius: var(--radius-full);
        box-shadow: var(--shadow-xs);
        color: var(--color-primary);
        font-weight: var(--font-weight-medium);
        font-size: 14px;

        .thinking-dots {
          display: flex;
          gap: var(--space-xxs);
          margin-left: var(--space-xs);

          .dot {
            width: 8px;
            height: 8px;
            background-color: var(--color-primary);
            border-radius: var(--radius-full);
            animation: thinking 1.4s infinite ease-in-out;

            &:nth-child(1) { animation-delay: 0s; }
            &:nth-child(2) { animation-delay: 0.2s; }
            &:nth-child(3) { animation-delay: 0.4s; }
          }
        }
      }
    }

    /* مؤشر الكتابة */
    .typing-indicator {
      display: inline-flex;
      align-items: center;
      
      .typing-cursor {
        display: inline-block;
        width: 2px;
        height: 16px;
        background-color: var(--color-primary);
        margin-left: var(--space-xxs);
        animation: blink 0.8s infinite;
        vertical-align: middle;
      }
    }
  }

  /* حاوية إدخال المحادثة */
  #chat-input-container {
    flex-shrink: 0;
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
    position: relative;
    z-index: var(--z-index-docked);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.03);
    
    /* منطقة الإدخال */
    .chat-input-area {
      display: flex;
      flex-direction: column;
      gap: var(--space-sm);
      width: 100%;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      transition: all var(--transition-speed-fast) var(--easing-out);
      background-color: white;
      overflow: hidden;
      box-shadow: var(--shadow-xs);
      
      &:focus-within {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
      }
      
      /* حقل الإدخال */
      .chat-input {
        width: 100%;
        min-height: 48px;
        max-height: 200px;
        padding: var(--space-sm) var(--space-md);
        border: none;
        resize: none;
        font-family: var(--font-family-base);
        font-size: 15px;
        line-height: 1.5;
        color: var(--color-text-primary);
        
        &:focus {
          outline: none;
        }
        
        &::placeholder {
          color: var(--color-text-tertiary);
        }
      }
      
      /* شريط الإجراءات */
      .input-actions {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-xs) var(--space-sm);
        border-top: 1px solid var(--color-border);
        background-color: var(--color-bg-secondary);
        
        /* مجموعة أزرار يسار */
        .left-actions {
          display: flex;
          gap: var(--space-xs);
        }
        
        /* مجموعة أزرار يمين */
        .right-actions {
          display: flex;
          gap: var(--space-xs);
        }
        
        /* زر الإجراء */
        .action-button {
          display: flex;
          align-items: center;
          justify-content: center;
          min-width: 32px;
          height: 32px;
          border-radius: var(--radius-md);
          background-color: transparent;
          color: var(--color-text-secondary);
          border: none;
          cursor: pointer;
          transition: all var(--transition-speed-fast) var(--easing-out);
          padding: 0 var(--space-xs);
          
          &:hover {
            background-color: rgba(var(--color-primary-rgb), 0.1);
            color: var(--color-primary);
          }
          
          &.has-label {
            padding: 0 var(--space-sm);
            gap: var(--space-xxs);
            
            .label {
              font-size: 13px;
              font-weight: var(--font-weight-medium);
            }
          }
          
          &.primary {
            background-color: var(--color-primary);
            color: white;
            padding: 0 var(--space-md);
            
            &:hover {
              background-color: var(--color-primary-dark);
            }
          }
        }
      }
    }
    
    /* نصائح الكتابة */
    .input-suggestions {
      margin-top: var(--space-xs);
      display: flex;
      gap: var(--space-xxs);
      flex-wrap: wrap;
      
      .suggestion {
        font-size: 12px;
        padding: var(--space-xxs) var(--space-xs);
        border-radius: var(--radius-sm);
        background-color: rgba(var(--color-primary-rgb), 0.05);
        color: var(--color-primary);
        cursor: pointer;
        transition: all var(--transition-speed-fast) var(--easing-out);
        border: 1px solid rgba(var(--color-primary-rgb), 0.1);
        
        &:hover {
          background-color: rgba(var(--color-primary-rgb), 0.1);
          transform: translateY(-1px);
        }
      }
    }
  }
}

/* تحريك النقاط */
@keyframes thinking {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(-4px); opacity: 1; }
}

/* وميض المؤشر */
@keyframes blink {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* ===== الوضع الداكن ===== */
.dark-theme .deepseek-main-chat,
#chat-container.theme-dark .deepseek-main-chat {
  #chat-container {
    background-color: var(--color-dark-secondary);
  }
  
  #chat-header {
    background-color: var(--color-dark-primary);
    border-bottom-color: var(--color-dark-border);
    
    .chat-header-title {
      color: var(--color-dark-text-primary);
    }
    
    .chat-header-actions {
      .header-action {
        background-color: var(--color-dark-primary);
        border-color: var(--color-dark-border);
        color: var(--color-dark-text-secondary);
        
        &:hover {
          border-color: var(--color-primary-light);
        }
      }
    }
  }
  
  #chat-output {
    background-color: var(--color-dark-secondary);
    
    &::-webkit-scrollbar-thumb {
      background-color: rgba(var(--color-primary-rgb), 0.3);
      
      &:hover {
        background-color: rgba(var(--color-primary-rgb), 0.5);
      }
    }
    
    .message {
      &.ai-message {
        .message-content {
          background-color: var(--color-dark-primary);
          color: var(--color-dark-text-primary);
        }
      }
    }
  }
  
  #chat-input-container {
    background-color: var(--color-dark-primary);
    border-top-color: var(--color-dark-border);
    
    .chat-input-area {
      background-color: var(--color-dark-primary);
      border-color: var(--color-dark-border);
      
      .chat-input {
        background-color: var(--color-dark-primary);
        color: var(--color-dark-text-primary);
        
        &::placeholder {
          color: var(--color-dark-text-tertiary);
        }
      }
      
      .input-actions {
        background-color: var(--color-dark-primary);
        border-top-color: var(--color-dark-border);
        
        .action-button {
          color: var(--color-dark-text-secondary);
          
          &:hover {
            background-color: rgba(var(--color-primary-rgb), 0.2);
          }
        }
      }
    }
    
    .input-suggestions {
      .suggestion {
        background-color: rgba(var(--color-primary-rgb), 0.15);
        border-color: rgba(var(--color-primary-rgb), 0.3);
        
        &:hover {
          background-color: rgba(var(--color-primary-rgb), 0.25);
        }
      }
    }
  }
}

/* ===== تصميم متجاوب ===== */
@media screen and (max-width: 1200px) {
  .deepseek-main-chat {
    #chat-header {
      padding: 1px 5px 1px 5px;
    }
    
    #chat-output {
      padding: var(--space-md);
    }
    
    #chat-input-container {
      padding: 5px 12px 5px 12px;
    }
  }
}

@media screen and (max-width: 768px) {
  .deepseek-main-chat {
    #chat-header {
      .chat-header-title {
        font-size: 16px;
        
        .header-icon {
          width: 28px;
          height: 28px;
          font-size: 14px;
        }
      }
      
      .chat-header-actions {
        gap: var(--space-xs);
        
        .header-action {
          width: 32px;
          height: 32px;
        }
        
        .toggle-fullscreen {
          font-size: 12px;
          padding: 4px 8px;
          
          span {
            display: none;
          }
        }
      }
    }
    
    #chat-output {
      .scroll-to-top {
        width: 36px;
        height: 36px;
        bottom: var(--space-md);
        right: var(--space-md);
      }
    }
    
    #chat-input-container {
      .chat-input-area {
        .input-actions {
          .action-button {
            &.has-label {
              .label {
                display: none;
              }
            }
          }
        }
      }
      
      .input-suggestions {
        display: none; /* إخفاء الاقتراحات على الشاشات الصغيرة */
      }
    }
  }
}

@media screen and (max-width: 480px) {
  .deepseek-main-chat {
    #chat-header {
      padding: 8px 12px;
      
      .chat-header-title {
        font-size: 14px;
        
        .header-icon {
          width: 24px;
          height: 24px;
          font-size: 12px;
        }
      }
      
      .chat-header-actions {
        gap: 4px;
        
        .header-action {
          width: 28px;
          height: 28px;
        }
      }
    }
    
    #chat-output {
      padding: 12px;
    }
    
    #chat-input-container {
      padding: 8px 12px 12px;
      
      .chat-input-area {
        .chat-input {
          min-height: 40px;
          font-size: 14px;
        }
      }
    }
  }
}

/* =============================================
   4. زر تبديل الشريط الجانبي (نسخة متميزة)
   ============================================= */
.sidebar-toggle {
  /* زر التبديل الأساسي */
  &.fancy-toggle {
    position: fixed;
    top: 50%;
    left: 0;
    width: calc(var(--space-xl) + 8px);
    height: 100px; /* زيادة الارتفاع للتحسين */
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    background: var(--color-primary-gradient);
    color: white;
    border: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: var(--z-index-overlay);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-speed-normal) var(--easing-bounce);
    transform: translate(-8px, -50%); /* تعديل الموضع للظهور أكثر وضوحًا */
    overflow: hidden;

    /* تأثير زجاجي محسن */
    &::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg,
                  rgba(255, 255, 255, 0.3) 0%,
                  rgba(255, 255, 255, 0.15) 50%,
                  rgba(255, 255, 255, 0.05) 100%);
      opacity: 0.9;
      z-index: -1;
    }

    /* تأثير توهج */
    &::after {
      content: "";
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle at center, rgba(255, 255, 255, 0.8) 0%, transparent 60%);
      opacity: 0;
      transform: scale(0.5);
      z-index: -1;
      transition: opacity var(--transition-speed-slow) var(--easing-out),
                  transform var(--transition-speed-slow) var(--easing-out);
      pointer-events: none;
    }

    /* تنسيق الأيقونة */
    .toggle-icon {
      font-size: 20px; /* زيادة حجم الأيقونة */
      margin-bottom: var(--space-sm);
      transition: all var(--transition-speed-normal) var(--easing-bounce);
      filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
      position: relative;
      z-index: 2;
    }

    /* نص التلميح */
    .toggle-tooltip {
      writing-mode: vertical-rl;
      transform: rotate(180deg);
      text-orientation: mixed;
      font-size: 13px;
      font-weight: var(--font-weight-semibold);
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-top: var(--space-sm);
      opacity: 0.95;
      transition: all var(--transition-speed-normal) var(--easing-out);
      filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.2));
      position: relative;
      z-index: 2;
      text-align: center;
    }

    /* تأثيرات التحويم */
    &:hover {
      transform: translate(0, -50%);
      width: calc(var(--space-xl) + 16px);
      box-shadow: var(--shadow-xl), 0 0 20px rgba(var(--color-primary-rgb), 0.4);

      .toggle-icon {
        transform: scale(1.25) translateY(-2px);
        filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.25));
      }

      .toggle-tooltip {
        letter-spacing: 1.2px;
        opacity: 1;
      }

      &::after {
        opacity: 0.3;
        transform: scale(1);
      }
    }

    /* حالة الضغط */
    &:active {
      transform: translate(0, -50%) scale(0.96);
      box-shadow: var(--shadow-md);
    }

    /* تأثير نبض */
    &:not(:hover) {
      animation: pulseShadow 4s infinite;
    }
    
    /* حالة الشريط الجانبي المفتوح */
    &.sidebar-open {
      left: var(--sidebar-width);
      transform: translate(-8px, -50%);
      
      &:hover {
        transform: translate(0, -50%);
      }
      
      .toggle-icon {
        transform: rotate(180deg);
      }
      
      &:hover .toggle-icon {
        transform: rotate(180deg) scale(1.25) translateY(-2px);
      }
    }
  }

  /* زر التبديل الداخلي (داخل الشريط الجانبي) */
  &.internal-sidebar-toggle {
    --toggle-size: 36px;
    --icon-size: 16px;

    background: rgba(var(--color-primary-rgb), 0.05);
    border: 1px solid rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-text-secondary);
    width: var(--toggle-size);
    height: var(--toggle-size);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-left: auto;
    transition: all var(--transition-speed-normal) var(--easing-out);
    position: relative;
    overflow: hidden;

    /* تأثير موجي */
    &::before {
      content: "";
      position: absolute;
      inset: 0;
      background-color: var(--color-primary);
      opacity: 0;
      border-radius: inherit;
      transition: opacity var(--transition-speed-fast) var(--easing-linear);
      z-index: -1;
    }

    &::after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      width: 150%;
      height: 150%;
      background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
      opacity: 0;
      border-radius: var(--radius-full);
      transform: translate(-50%, -50%) scale(0);
      transition: transform var(--transition-speed-slow) var(--easing-out),
                  opacity var(--transition-speed-slow) var(--easing-out);
      z-index: -1;
      pointer-events: none;
    }

    /* تنسيق الأيقونة */
    .toggle-icon {
      font-size: var(--icon-size);
      transition: transform var(--transition-speed-normal) var(--easing-bounce);
      filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.05));
    }

    /* حالة التحويم */
    &:hover {
      color: var(--color-primary);
      transform: translateY(-2px);
      background-color: rgba(var(--color-primary-rgb), 0.08);
      border-color: rgba(var(--color-primary-rgb), 0.2);
      box-shadow: var(--shadow-sm);

      &::before {
        opacity: 0.08;
      }
      
      .toggle-icon {
        transform: scale(1.1);
      }
    }

    /* حالة الضغط */
    &:active {
      transform: scale(0.92) translateY(0);
      background-color: rgba(var(--color-primary-rgb), 0.12);

      &::after {
        opacity: 0.15;
        transform: translate(-50%, -50%) scale(1);
        transition: transform var(--transition-speed-fast) var(--easing-out),
                    opacity var(--transition-speed-fast) var(--easing-out);
      }
    }

    /* حالة الإغلاق */
    &.closed {
      i {
        transform: rotate(180deg);
        transition: transform var(--transition-speed-normal) var(--easing-bounce);
      }
      
      &:hover i {
        transform: rotate(180deg) scale(1.1);
      }
    }
  }
}

/* تنسيق للأنيميشن */
@keyframes pulseShadow {
  0% { box-shadow: var(--shadow-md); }
  50% { box-shadow: var(--shadow-lg), 0 0 12px rgba(var(--color-primary-rgb), 0.5); }
  100% { box-shadow: var(--shadow-md); }
}

/* خيارات للشاشات الصغيرة */
@media screen and (max-width: 768px) {
  .sidebar-toggle {
    &.fancy-toggle {
      width: calc(var(--space-lg) + 4px);
      height: 80px;
      
      .toggle-tooltip {
        font-size: 11px;
        letter-spacing: 0.5px;
      }
      
      .toggle-icon {
        font-size: 16px;
      }
      
      &:hover {
        width: calc(var(--space-lg) + 12px);
      }
    }
    
    &.internal-sidebar-toggle {
      --toggle-size: 32px;
      --icon-size: 14px;
    }
  }
}

/* تعديلات الوضع الداكن */
.dark-theme .sidebar-toggle,
body[data-theme="dark"] .sidebar-toggle {
  &.fancy-toggle {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: var(--shadow-md), 0 0 15px rgba(var(--color-primary-rgb), 0.2);
    
    &:hover {
      box-shadow: var(--shadow-lg), 0 0 20px rgba(var(--color-primary-rgb), 0.3);
    }
    
    &::before {
      background: linear-gradient(135deg,
                  rgba(255, 255, 255, 0.15) 0%,
                  rgba(255, 255, 255, 0.05) 50%,
                  rgba(255, 255, 255, 0.02) 100%);
    }
  }
  
  &.internal-sidebar-toggle {
    background: rgba(var(--color-primary-rgb), 0.1);
    border-color: rgba(var(--color-primary-rgb), 0.2);
    color: var(--color-dark-text-secondary);
    
    &:hover {
      background-color: rgba(var(--color-primary-rgb), 0.15);
      color: var(--color-primary-light);
    }
  }
}

/* تنسيق زر عائم إضافي للشاشات الصغيرة جدًا */
@media screen and (max-width: 480px) {
  .sidebar-toggle {
    &.fancy-toggle {
      top: auto;
      bottom: var(--space-lg);
      left: var(--space-sm);
      transform: translate(0, 0);
      height: auto;
      width: auto;
      padding: var(--space-xs) var(--space-sm);
      border-radius: var(--radius-full);
      flex-direction: row;
      gap: var(--space-xs);
      
      .toggle-tooltip {
        writing-mode: horizontal-tb;
        transform: none;
        margin-top: 0;
        font-size: 12px;
      }
      
      &:hover {
        transform: translateY(-2px);
      }
      
      &.sidebar-open {
        left: var(--space-sm);
        transform: translate(0, 0);
        
        &:hover {
          transform: translateY(-2px);
        }
      }
    }
  }
}

/* تنسيق لزر منفصل للشريط الجانبي */
.sidebar-toggle-floating {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--color-primary-gradient);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: var(--z-index-overlay);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-speed-normal) var(--easing-bounce);
  
  &::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
                rgba(255, 255, 255, 0.3) 0%,
                rgba(255, 255, 255, 0.1) 100%);
    border-radius: inherit;
    opacity: 0.7;
    z-index: -1;
  }
  
  .toggle-icon {
    font-size: 20px;
    transition: transform var(--transition-speed-normal) var(--easing-bounce);
  }
  
  &:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), 0 8px 20px rgba(var(--color-primary-rgb), 0.4);
    
    .toggle-icon {
      transform: scale(1.2);
    }
  }
  
  &:active {
    transform: scale(0.95);
  }
  
  /* وضع إخفاء عند الشاشات الكبيرة */
  display: none;
}

/* إظهار الزر العائم على الشاشات الصغيرة فقط */
@media screen and (max-width: 768px) {
  .sidebar-toggle-floating {
    display: flex;
  }
}

/* =============================================
   5. Dark Mode (Enhanced)
   ============================================= */
.deepseek-fullscreen-mode.theme-dark,
.dark-theme .deepseek-fullscreen-mode {
  /* Color Overrides */
  --color-primary: #38bdf8;
  --color-primary-rgb: 56, 189, 248;
  --color-secondary: #a78bfa;
  --color-secondary-rgb: 167, 139, 250;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-border: #334155;

  /* Sidebar Specific */
  .deepseek-sidebar {
    background-color: var(--color-bg-secondary);
    border-right-color: var(--color-border);

    .sidebar-item {
      &.active {
        background-color: rgba(var(--color-primary-rgb), 0.2);
      }

      &:hover {
        background-color: rgba(var(--color-primary-rgb), 0.15);
      }
    }
  }

  /* Toggle Buttons */
  .sidebar-toggle {
    &.fancy-toggle {
      background: linear-gradient(135deg,
                  var(--color-primary),
                  var(--color-primary-dark));
      box-shadow: var(--shadow-lg);

      &::after {
        background: linear-gradient(135deg,
                    rgba(255, 255, 255, 0.15) 0%,
                    rgba(255, 255, 255, 0.05) 50%,
                    rgba(255, 255, 255, 0.02) 100%);
      }
    }

    &.internal-sidebar-toggle {
      color: var(--color-text-secondary);

      &:hover {
        color: var(--color-primary);
      }
    }
  }
}

/* =============================================
   6. Mobile Responsiveness (Premium)
   ============================================= */
@media (max-width: 768px) {
  /* Fullscreen Container */
  .deepseek-fullscreen-mode {
    position: fixed;
    width: 100vw;
    height: 100vh;
    display: block;

    /* Main Chat Area */
    .deepseek-main-chat {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      width: 100% !important;
      height: 100% !important;
      transition: none;

      /* Adjust Padding */
      #chat-header,
      #chat-output,
      #chat-input-container {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
      }
    }

    /* Sidebar */
    .deepseek-sidebar {
      position: fixed !important;
      top: 0 !important;
      left: 0 !important;
      width: 85% !important;
      max-width: 300px !important;
      height: 100vh !important;
      z-index: var(--z-index-modal) !important;
      transform: translateX(0) !important;
      box-shadow: var(--shadow-xl) !important;

      /* Hidden State */
      &.hidden-sidebar {
        transform: translateX(-100%) !important;
      }

      /* Mobile Header */
      .mobile-sidebar-header {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding: var(--space-md) !important;
        background: var(--color-primary-gradient) !important;
        position: sticky !important;
        top: 0 !important;
        z-index: var(--z-index-sticky) !important;

        /* Title */
        .mobile-header-title {
          margin: 0 !important;
          font-size: 16px !important;
          color: white !important;
          text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
        }

        /* Close Button */
        .close-sidebar-btn {
          width: 32px !important;
          height: 32px !important;
          border-radius: var(--radius-full) !important;
          background-color: rgba(255, 255, 255, 0.2) !important;
          color: white !important;
          display: flex !important;
          align-items: center !important;
          justify-content: center !important;
          cursor: pointer !important;
          transition: all var(--transition-speed-fast) var(--easing-out);

          &:hover {
            background-color: rgba(255, 255, 255, 0.3) !important;
            transform: rotate(90deg);
          }
        }
      }
    }

    /* Sidebar Toggle */
    .sidebar-toggle.fancy-toggle {
      width: 40px;
      height: 40px;
      top: calc(var(--header-height) + 20px);
      transform: translate(calc(40px * -0.5), 0);
      flex-direction: row;
      padding: 0 var(--space-sm);
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      animation: none;

      .toggle-icon {
        margin: 0;
        font-size: 18px;
      }

      .toggle-tooltip {
        display: none;
      }

      &:hover {
        width: 40px;
        transform: translate(0, 0);
      }
    }
  }
}

/* =============================================
   7. RTL Support (Enhanced)
   ============================================= */
.rtl {
  /* Sidebar */
  .deepseek-sidebar {
    border-left: 1px solid var(--color-border);
    border-right: none;

    &.hidden-sidebar {
      margin-right: calc(var(--sidebar-width) * -1);
      margin-left: 0;
    }

    /* Items */
    .sidebar-item {
      &:hover {
        transform: translateX(-5px);
      }

      &.active {
        border-right: 3px solid var(--color-primary);
        border-left: none;
      }
    }

    /* Icons */
    .item-icon {
      margin-left: var(--space-sm);
      margin-right: 0;
    }
  }

  /* Toggle Button */
  .sidebar-toggle.fancy-toggle {
    left: auto;
    right: 0;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    transform: translate(calc(var(--space-xl) * 0.85), -50%);

    .toggle-tooltip {
      writing-mode: vertical-lr;
      transform: rotate(0deg);
    }

    &:hover {
      transform: translate(0, -50%);
    }
  }

  /* Mobile */
  @media (max-width: 768px) {
    .deepseek-sidebar {
      left: auto !important;
      right: 0 !important;

      &.hidden-sidebar {
        transform: translateX(100%) !important;
      }
    }

    .sidebar-toggle.fancy-toggle {
      left: auto;
      right: 0;
      border-radius: var(--radius-md) 0 0 var(--radius-md);
      transform: translate(calc(40px * 0.5), 0);

      &:hover {
        transform: translate(0, 0);
      }
    }
  }
}

/* =============================================
   8. Animations & Effects
   ============================================= */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes thinking {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(-5px); opacity: 1; }
}

@keyframes blink {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes pulseShadow {
  0% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(var(--color-primary-rgb), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0); }
}

@keyframes pulse-fade {
  0% { opacity: 0; }
  50% { opacity: 1; }
  100% { opacity: 0; }
}

/* =============================================
   9. Utility Classes
   ============================================= */
/* Text Utilities */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }

/* Background Utilities */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-tertiary { background-color: var(--color-bg-tertiary); }

/* Spacing Utilities */
.mt-sm { margin-top: var(--space-sm); }
.mb-sm { margin-bottom: var(--space-sm); }
.pt-sm { padding-top: var(--space-sm); }
.pb-sm { padding-bottom: var(--space-sm); }

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* Visibility Utilities */
.hidden { display: none; }
.opacity-0 { opacity: 0; }
.opacity-100 { opacity: 1; }

/* =============================================
   10. Print Styles
   ============================================= */
@media print {
  .deepseek-fullscreen-mode {
    position: static;
    width: 100%;
    height: auto;
    box-shadow: none;
    animation: none;
    overflow: visible;
    display: block;
    background-color: white !important;
    color: black !important;
  }

  .deepseek-sidebar {
    display: none !important;
  }

  .deepseek-main-chat {
    width: 100% !important;
    height: auto !important;
    margin-left: 0 !important;
    page-break-after: avoid;
  }

  #chat-container {
    break-inside: avoid;
  }

  #chat-header {
    display: none !important;
  }

  #chat-output {
    height: auto !important;
    overflow: visible !important;
    padding: 0 !important;
    page-break-inside: avoid;
  }

  #chat-input-container {
    display: none !important;
  }

  .message {
    page-break-inside: avoid;
    break-inside: avoid;
    margin-bottom: 1.5rem;
  }

  .ai-message .message-content::before {
    display: none;
  }

  /* Hide interactive elements */
  .sidebar-toggle,
  .delete-conversation,
  .conversation-actions,
  .mobile-nav-buttons,
  .fixed-rating-container {
    display: none !important;
  }

  /* Ensure text is black for printing */
  * {
    color: black !important;
    background-color: white !important;
  }

  /* Add URL after links */
  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    font-weight: normal;
  }

  /* Print page breaks */
  .page-break {
    page-break-before: always;
    margin-top: 2rem;
  }

  @page {
    size: A4;
    margin: 1.5cm;
    @top-center {
      content: "DeepSeek Chat Conversation";
      font-size: 12pt;
    }
    @bottom-right {
      content: "Page " counter(page);
      font-size: 10pt;
    }
  }
}

/* =============================================
   11. Accessibility Enhancements
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.deepseek-fullscreen-mode {
  /* Focus styles for keyboard navigation */
  :focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }

  /* High contrast mode */
  @media (forced-colors: active) {
    --color-primary: Highlight;
    --color-text-primary: ButtonText;
    --color-border: ButtonText;

    .sidebar-item.active {
      forced-color-adjust: none;
      background-color: Highlight;
      color: HighlightText;
    }
  }
}

/* =============================================
   12. Micro-interactions & Delighters
   ============================================= */
/* Confetti effect for positive actions */
@keyframes confetti-fall {
  0% {
    transform: translateY(-100vh) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}

.confetti {
  position: fixed;
  width: 10px;
  height: 10px;
  background-color: var(--color-primary);
  animation: confetti-fall 3s linear forwards;
  z-index: var(--z-index-toast);
}

/* Subtle hover effects */
.sidebar-item {
  transition: transform 0.2s var(--easing-bounce);

  &:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
}

/* Loading bar for API calls */
.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary-gradient);
  z-index: var(--z-index-tooltip);
  animation: loading-progress 2s ease-in-out infinite;
}

@keyframes loading-progress {
  0% { width: 0%; left: 0; }
  50% { width: 80%; left: 0; }
  100% { width: 0%; left: 100%; }
}

/* =============================================
   13. Performance Optimizations
   ============================================= */
/* Will-change hints for browsers */
.deepseek-sidebar,
.sidebar-item,
.message {
  will-change: transform, opacity;
}

/* Containment for better rendering performance */
#chat-output {
  contain: strict;
}

/* Optimize images and icons */
.agent-icon,
.conversation-icon {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* =============================================
   14. Cross-browser Fixes
   ============================================= */
/* Firefox scrollbar fix */
@-moz-document url-prefix() {
  .deepseek-sidebar {
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) transparent;
  }
}

/* Safari transform fixes */
@media not all and (min-resolution:.001dpcm) {
  @supports (-webkit-appearance:none) {
    .sidebar-item:hover {
      transform: none;
    }
  }
}

/* IE11 fallbacks (just in case) */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  .deepseek-fullscreen-mode {
    display: flex !important;
    flex-direction: column;
  }

  .deepseek-sidebar {
    width: 280px;
    float: left;
  }

  .deepseek-main-chat {
    overflow: auto;
  }
}

/* =============================================
   15. Final Polish
   ============================================= */
/* Smooth state transitions */
.deepseek-fullscreen-mode {
  view-transition-name: deepseek-chat;
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.3s;
}

/* Print footer */
@media print {
  .chat-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 0.8em;
    color: #666;
    border-top: 1px solid #eee;
    padding: 0.5rem;
  }
}

/* Perfect scrollbar for desktop */
@media (hover: hover) and (pointer: fine) {
  .deepseek-sidebar {
    scrollbar-gutter: stable;
  }
}

/* Touch device optimizations */
@media (pointer: coarse) {
  .sidebar-item {
    padding: 12px;
    min-height: 60px;
  }

  .delete-conversation {
    width: 36px;
    height: 36px;
  }
}

/* Ultra-wide screens */
@media (min-width: 2000px) {
  .deepseek-sidebar {
    width: var(--sidebar-width-expanded);
  }

  .sidebar-item {
    padding: 14px;
  }
}

/* =============================================
   16. Dynamic Theme Support
   ============================================= */
.deepseek-fullscreen-mode {
  /* For theme switching */
  transition: background-color 0.3s ease, color 0.3s ease;

  /* System theme adaptation */
  @media (prefers-color-scheme: dark) {
    &:not(.theme-light) {
      --color-bg-secondary: var(--color-dark-secondary);
      --color-text-primary: var(--color-dark-text-primary);
      --color-border: var(--color-dark-border);
    }
  }
}

/* ====================================
   17. تكامل مع تطبيقات الجوال
   ==================================== */

/* ضبط أفضل لشاشات اللمس */
@media (hover: none) and (pointer: coarse) {
    /* زيادة حجم عناصر اللمس */
    .agent-item,
    .conversation-item {
        padding: 12px 10px;
        margin: 5px 0;
    }

    .delete-conversation {
        width: 32px;
        height: 32px;
    }

    .sidebar-toggle,
    .mobile-nav-button {
        width: 44px;
        height: 44px;
    }

    /* تعزيز حالات اللمس النشطة */
    .agent-item:active,
    .conversation-item:active {
        background-color: rgba(var(--color-primary-rgb), 0.2);
    }

    /* تحسين التغذية البصرية عند اللمس */
    .sidebar-toggle:active,
    .mobile-nav-button:active,
    .delete-conversation:active {
        transform: scale(0.9);
        transition: transform 0.1s ease;
    }
}

/* تعديل للشاشات ذات الكثافة العالية */
@media
(-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
    .deepseek-sidebar,
    .deepseek-main-chat {
        text-rendering: optimizeLegibility;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Improved conversation item structure */
.conversation-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    margin: 4px 0;
    border-radius: 10px;
    cursor: default; /* Remove pointer cursor from whole item */
    position: relative;
    transition: all 0.2s ease;
    overflow: hidden;
}

.conversation-main {
    display: flex;
    align-items: center;
    flex: 1;
    cursor: pointer; /* Add pointer only to clickable area */
    padding: 5px;
    border-radius: 8px;
}

.conversation-main:hover {
    background-color: rgba(var(--color-primary-rgb), 0.05);
}

.conversation-actions {
    display: flex;
    align-items: center;
    gap: 5px;
}

.delete-conversation {
    background-color: transparent;
    border: none;
    color: var(--color-text-tertiary);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative; /* Ensure it's above other elements */
    z-index: 5; /* Higher z-index for the delete button */
}

.delete-conversation:hover {
    background-color: #ffefef;
    color: var(--color-error);
    transform: rotate(5deg);
}

/* ===== MOBILE SIDEBAR CRITICAL FIXES ===== */
@media (max-width: 768px) {
    /* Basic fullscreen container */
    .deepseek-fullscreen-mode {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        overflow: hidden;
        width: 100vw;
        height: 100vh;
        background-color: var(--color-bg-primary);
        display: block !important; /* Force block display */
    }

    /* Force full width for main chat area */
    .deepseek-main-chat {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100% !important;
        height: 100% !important;
        overflow: hidden;
        transition: none !important;
        margin-left: 0 !important;
        z-index: 1;
    }

    /* Critical mobile sidebar styling */
    .deepseek-sidebar {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        width: 85% !important;
        max-width: 300px !important;
        height: 100vh !important;
        max-height: 100vh !important;
        z-index: 9999 !important;
        background-color: var(--color-bg-secondary) !important;
        overflow-y: auto !important;
        transform: translateX(0) !important;
        transition: transform 0.3s ease !important;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.3) !important;
        margin: 0 !important;
        padding-top: 0 !important;
        display: block !important;
    }

    /* Hidden sidebar state */
    .deepseek-sidebar.hidden-sidebar {
        transform: translateX(-100%) !important;
    }

    /* RTL support */
    .rtl .deepseek-sidebar {
        left: auto !important;
        right: 0 !important;
        transform: translateX(0) !important;
    }

    .rtl .deepseek-sidebar.hidden-sidebar {
        transform: translateX(100%) !important;
    }

    /* Mobile sidebar header */
    .mobile-sidebar-header {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding: 15px !important;
        border-bottom: 1px solid var(--color-border) !important;
        background-color: var(--color-primary) !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 10 !important;
    }

    .mobile-sidebar-header h2 {
        margin: 0 !important;
        font-size: 18px !important;
        color: white !important;
    }
}

.internal-sidebar-toggle {
  /* التصميم الأساسي */
  display: flex;
  margin-left: 22px;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background-color: rgba(var(--color-primary-rgb), 0.05);
  cursor: pointer;

  /* الأيقونة */
  color: var(--color-primary);
  font-size: 16px;

  /* التأثيرات البسيطة */
  transition: all 0.2s ease;
  box-shadow: var(--shadow-xs);
}

.internal-sidebar-toggle:hover {
  background-color: rgba(var(--color-primary-rgb), 0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.internal-sidebar-toggle:active {
  transform: translateY(0);
  box-shadow: var(--shadow-xs);
}

.internal-sidebar-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.3);
}

/* حالة السايدبار المغلقة */
.internal-sidebar-toggle.closed i {
  transform: rotate(180deg);
  transition: transform 0.3s ease;
}

/* للشاشات الصغيرة */
@media (max-width: 768px) {
  .internal-sidebar-toggle {
    margin-left: 22px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}

.sidebar-login-required {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
    padding: 12px;
    border-radius: 10px;
    font-size: 14px;
    margin-top: 10px;
    text-align: center;
}

.sidebar-login-required a {
    color: #0d6efd;
    font-weight: bold;
    text-decoration: underline;
}

/* Dark Theme for Login Required */
.dark-theme .sidebar-login-required,
#chat-container.theme-dark .sidebar-login-required {
  background-color: rgba(255, 243, 205, 0.1);
  color: #ffe69c;
  border-color: #665429;
}

.dark-theme .sidebar-login-required a,
#chat-container.theme-dark .sidebar-login-required a {
  color: #6ea8fe;
}





/* زر إنشاء محادثة جديدة في الشريط الجانبي */
#new-conversation-btn-sidebar.create-new-conversation {
  /* تخطيط أساسي */
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full, 9999px);
  
  /* ألوان وحدود */
  background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.08);
  color: var(--color-primary, #3b82f6);
  border: 1px solid rgba(var(--color-primary-rgb, 59, 130, 246), 0.2);
  
  /* خصائص إضافية */
  cursor: pointer;
  margin-left: auto;
  transition: all var(--transition-speed-normal, 300ms) var(--easing-bounce, cubic-bezier(0.175, 0.885, 0.32, 1.275));
  position: relative;
  overflow: hidden;
  outline: none;
}

/* تأثير الخلفية الموجي */
#new-conversation-btn-sidebar.create-new-conversation::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--color-primary, #3b82f6);
  opacity: 0;
  border-radius: inherit;
  transition: opacity var(--transition-speed-fast, 200ms) var(--easing-linear, cubic-bezier(0, 0, 1, 1));
  z-index: -1;
}

/* تأثير النقر */
#new-conversation-btn-sidebar.create-new-conversation::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle, var(--color-primary-light, #6a8ff8) 0%, transparent 70%);
  opacity: 0;
  border-radius: var(--radius-full, 9999px);
  transform: translate(-50%, -50%) scale(0);
  transition: transform var(--transition-speed-slow, 500ms) var(--easing-out, cubic-bezier(0, 0, 0.2, 1)),
              opacity var(--transition-speed-slow, 500ms) var(--easing-out, cubic-bezier(0, 0, 0.2, 1));
  z-index: -1;
  pointer-events: none;
}

/* تأثير التحويم */
#new-conversation-btn-sidebar.create-new-conversation:hover {
  transform: translateY(-2px) scale(1.1);
  background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.12);
  border-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.3);
  box-shadow: 0 4px 8px rgba(var(--color-primary-rgb, 59, 130, 246), 0.15);
}

/* تأثير التحويم على الأيقونة الداخلية */
#new-conversation-btn-sidebar.create-new-conversation:hover i {
  transform: rotate(90deg);
}

/* تأثير النقر النشط */
#new-conversation-btn-sidebar.create-new-conversation:active {
  transform: scale(0.92);
  background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.18);
}

#new-conversation-btn-sidebar.create-new-conversation:active::after {
  opacity: 0.15;
  transform: translate(-50%, -50%) scale(1);
  transition: transform var(--transition-speed-fast, 200ms) var(--easing-out, cubic-bezier(0, 0, 0.2, 1)),
              opacity var(--transition-speed-fast, 200ms) var(--easing-out, cubic-bezier(0, 0, 0.2, 1));
}

/* انتقال الأيقونة */
#new-conversation-btn-sidebar.create-new-conversation i {
  font-size: 14px;
  transition: transform var(--transition-speed-normal, 300ms) var(--easing-out, cubic-bezier(0, 0, 0.2, 1));
}

/* وضع المعالجة */
#new-conversation-btn-sidebar.create-new-conversation.button-processing {
  opacity: 0.7;
  cursor: wait;
  pointer-events: none;
}

/* دعم الوضع المظلم */
.theme-dark #new-conversation-btn-sidebar.create-new-conversation,
.dark-theme #new-conversation-btn-sidebar.create-new-conversation {
  background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.15);
  border-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.25);
  color: var(--color-primary-light, #6a8ff8);
}

.theme-dark #new-conversation-btn-sidebar.create-new-conversation:hover,
.dark-theme #new-conversation-btn-sidebar.create-new-conversation:hover {
  background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.25);
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb, 59, 130, 246), 0.2);
}

/* دعم RTL */
.rtl #new-conversation-btn-sidebar.create-new-conversation {
  margin-left: 0;
  margin-right: auto;
}

/* تعديلات للشاشات الصغيرة */
@media (max-width: 768px) {
  #new-conversation-btn-sidebar.create-new-conversation {
    width: 32px;
    height: 32px;
  }
  
  #new-conversation-btn-sidebar.create-new-conversation i {
    font-size: 16px;
  }
}






/* أنماط لتحسين تجربة تبديل الوكلاء */
.agent-item.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.agent-item.processing {
    background-color: rgba(var(--color-primary-rgb, 59, 130, 246), 0.1);
    position: relative;
    overflow: hidden;
}

.agent-item.processing::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(var(--color-primary-rgb, 59, 130, 246), 0.2),
        transparent
    );
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    100% {
        left: 150%;
    }
}

.loading-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: white;
    background-color: var(--color-primary, #4e78f6);
}

.typing-indicator {
    display: inline-block;
}

.typing-dots {
    display: inline-flex;
}

.typing-dots .dot {
    opacity: 0;
    animation: typing-dot 1.4s infinite;
}

.typing-dots .dot:nth-child(1) { animation-delay: 0s; }
.typing-dots .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dots .dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

.typed-content {
    opacity: 1;
    transition: opacity 0.3s;
}

.message-appeared {
    animation: message-appear 0.5s var(--easing-bounce, cubic-bezier(0.175, 0.885, 0.32, 1.275));
}

@keyframes message-appear {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.name-changed {
    animation: name-change 0.5s;
}

@keyframes name-change {
    0% { opacity: 0; transform: translateY(-5px); }
    100% { opacity: 1; transform: translateY(0); }
}




/* أنماط إضافية للعناصر المصغرة في السايدبار */
.conversation-group-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted, #65676b);
    padding: 4px 6px;
    margin: 0;
    border-radius: 4px;
    background-color: var(--bg-tertiary, #f0f2f5);
}

.conversation-group-items {
    max-height: 150px;
    overflow-y: auto;
    padding: 2px 0;
    margin: 2px 0 6px 0;
    scrollbar-width: thin;
}

.conversation-item {
    min-height: 36px;
    padding: 4px 6px;
}

.conversation-icon {
    width: 26px;
    height: 26px;
    min-width: 26px;
    font-size: 11px;
}

.active-badge {
    font-size: 9px;
    padding: 1px 4px;
}

.delete-conversation {
    width: 20px;
    height: 20px;
    min-width: 20px;
    font-size: 10px;
}