/* ==========================================================================
  CHATBOT — CSS DESIGN TOKENS
   ========================================================================== */
   
:root {
  /* --- Core Palette --- */
  --color-bg-deep:                #07112b;
  --color-bg-mid:                 #0a1f4e;
  --color-bg-soft:                #0c2354;
  --color-bg-panel:               #0c2354;
  --color-bg-surface:             #0c2354;
  --color-bg-gradient-start:      #07112b;
  --color-bg-gradient-end:        #0a1f4e;
  
  /* --- Gold Accent --- */
  --color-accent:                 #c9913a;
  --color-accent-dark:            #b07e2e;
  --color-accent-light:           #e0b06a;
  --color-accent-bright:          #e0b06a;
  --color-accent-rgb:             201, 145, 58;
  --color-accent-border:          rgba(201, 145, 58, 0.30);
  --color-accent-border-hover:    rgba(201, 145, 58, 0.50);
  --color-accent-shadow:          rgba(201, 145, 58, 0.40);
  --color-accent-shadow-light:    rgba(201, 145, 58, 0.28);
  --color-accent-glow:            rgba(201, 145, 58, 0.35);
  --color-accent-soft:            rgba(201, 145, 58, 0.12);
  --color-accent-semi:            rgba(200, 146, 61, 0.3);
  --color-accent-dim:             rgba(200, 146, 61, 0.28);
  --color-accent-strong:          rgba(200, 146, 61, 0.5);
  --color-accent-ultra-soft:      rgba(200, 146, 61, 0.05);
  --color-accent-grad-start:      #c9913a;
  --color-accent-grad-end:        #e0b06a;
  
  /* --- Text Colors --- */
  --color-text-primary:           #f0ead8;
  --color-text-muted:             rgba(240, 234, 216, 0.55);
  --color-text-faint:             rgba(240, 234, 216, 0.30);
  --color-text-soft:              rgba(240, 234, 216, 0.75);
  --color-text-light:             rgba(240, 234, 216, 0.50);
  --color-text-subtle:            rgba(240, 234, 216, 0.07);
  
  /* --- Surfaces & Borders --- */
  --color-surface:                rgba(240, 234, 216, 0.05);
  --color-surface-hover:          rgba(201, 145, 58, 0.06);
  --color-surface-message:        rgba(240, 234, 216, 0.06);
  --color-border:                 rgba(240, 234, 216, 0.12);
  --color-border-light:           rgba(240, 234, 216, 0.10);
  --color-border-gold-light:      rgba(200, 146, 61, 0.16);
  --color-border-gold-mid:        rgba(200, 146, 61, 0.3);
  --color-border-gold-strong:     rgba(200, 146, 61, 0.5);
  --color-separator-light:        rgba(201, 145, 58, 0.20);
  --color-separator-subtle:       rgba(201, 145, 58, 0.15);
  --color-separator-soft:         rgba(201, 145, 58, 0.12);
  --color-separator-input:        rgba(201, 145, 58, 0.15);
  
  /* --- Error States --- */
  --color-error:                  #f56565;
  --color-error-dark:             #e87070;
  --color-error-border:           rgba(224, 82, 82, 0.30);
  --color-error-bg:               rgba(224, 82, 82, 0.12);
  --color-error-bg-light:         rgba(224, 82, 82, 0.15);
  --color-error-glow:             rgba(224, 82, 82, 0.40);
  --color-error-soft:             rgba(224, 82, 82, 0.10);
  --color-error-bg-alert:         rgba(224, 82, 82, 0.10);
  --color-error-border-alert:     rgba(224, 82, 82, 0.22);
  
  /* --- Success Color --- */
  --color-success:                #48bb78;
  --color-success-dark:           #3db87a;
  --color-success-shadow:         rgba(72, 187, 120, 0.1);
  --color-success-chip:           rgba(72, 187, 120, 0.38);
  --color-success-chip-bg:        rgba(72, 187, 120, 0.04);
  
  /* --- Info Color --- */
  --color-blue:                   #45caff;
  --color-blue-rgb:               69, 202, 255;
  --color-blue-glow:              rgba(69, 202, 255, 0.6);
  --color-blue-soft:              rgba(69, 202, 255, 0.1);
  
  /* --- Delete Modal Colors --- */
  --color-delete-btn-start:       #c53030;
  --color-delete-btn-end:         #9b2c2c;
  --color-delete-btn-hover-start: #e53e3e;
  --color-delete-btn-hover-end:   #c53030;
  --color-delete-btn-shadow:      rgba(197, 48, 48, 0.35);
  --color-delete-btn-shadow-hover: rgba(197, 48, 48, 0.45);
  
  /* --- Chatbot Specific --- */
  --color-chatbot-bg:             var(--color-bg-deep);
  --color-chatbot-header-start:   #050d1e;
  --color-chatbot-header-end:     var(--color-bg-mid);
  --color-chatbot-border:         var(--color-accent-border);
  --color-chatbot-shadow:         rgba(0, 0, 0, 0.55);
  --color-chatbot-shadow-light:   rgba(0, 0, 0, 0.50);
  
  /* --- Bot Bubble --- */
  --color-bot-bubble-bg:          var(--color-surface);
  --color-bot-bubble-border:      rgba(201, 145, 58, 0.18);
  --color-bot-bubble-text:        rgba(240, 234, 216, 0.85);
  
  /* --- User Bubble --- */
  --color-user-bubble-start:      var(--color-accent);
  --color-user-bubble-end:        var(--color-accent-light);
  --color-user-bubble-text:       var(--color-bg-deep);
  
  /* --- Avatars --- */
  --color-avatar-bot-bg:          rgba(201, 145, 58, 0.12);
  --color-avatar-bot-border:      rgba(201, 145, 58, 0.28);
  --color-avatar-bot-icon:        var(--color-accent);
  --color-avatar-user-bg:         rgba(240, 234, 216, 0.08);
  --color-avatar-user-border:     rgba(240, 234, 216, 0.15);
  --color-avatar-user-icon:       rgba(240, 234, 216, 0.65);
  
  /* --- Input --- */
  --color-input-bg:               rgba(240, 234, 216, 0.05);
  --color-input-border:           rgba(201, 145, 58, 0.25);
  --color-input-border-focus:     var(--color-accent);
  --color-input-focus-shadow:     rgba(201, 145, 58, 0.15);
  --color-input-placeholder:      rgba(240, 234, 216, 0.28);
  --color-input-text:             var(--color-text-primary);
  
  /* --- Quick Actions --- */
  --color-quick-action-bg:        rgba(201, 145, 58, 0.06);
  --color-quick-action-border:    rgba(201, 145, 58, 0.25);
  --color-quick-action-text:      rgba(240, 234, 216, 0.60);
  --color-quick-action-hover-bg:  rgba(201, 145, 58, 0.14);
  --color-quick-action-hover-text: var(--color-text-primary);
  
  /* --- Toggle Button --- */
  --color-toggle-bg-start:        var(--color-bg-deep);
  --color-toggle-bg-end:          var(--color-bg-mid);
  --color-toggle-border:          rgba(201, 145, 58, 0.40);
  --color-toggle-border-hover:    var(--color-accent);
  --color-toggle-glow:            rgba(201, 145, 58, 0.10);
  
  /* --- Send Button --- */
  --color-send-btn-start:         var(--color-accent);
  --color-send-btn-end:           var(--color-accent-light);
  --color-send-btn-text:          var(--color-bg-deep);
  --color-send-btn-shadow:        rgba(201, 145, 58, 0.35);
  --color-send-btn-shadow-hover:  rgba(201, 145, 58, 0.50);
  --color-send-btn-confirm-glow:  rgba(201, 145, 58, 0.18);
  
  /* --- Badge --- */
  --color-badge-start:            var(--color-accent);
  --color-badge-end:              var(--color-accent-light);
  --color-badge-text:             var(--color-bg-deep);
  
  /* --- Scrollbar --- */
  --color-scrollbar-thumb:        rgba(201, 145, 58, 0.20);
  --color-scrollbar-track:        transparent;
  
  /* --- Status Indicators --- */
  --color-status-online:          var(--color-success-dark);
  --color-status-offline:         rgba(240, 234, 216, 0.50);
  
  /* --- Close Button --- */
  --color-close-btn-bg:           rgba(240, 234, 216, 0.06);
  --color-close-btn-border:       rgba(240, 234, 216, 0.10);
  --color-close-btn-text:         rgba(240, 234, 216, 0.50);
  --color-close-btn-hover-bg:     rgba(224, 82, 82, 0.15);
  --color-close-btn-hover-text:   var(--color-error-dark);
  
  /* --- Sidebar --- */
  --color-sidebar-bg-start:       #0a1a3a;
  --color-sidebar-bg-end:         var(--color-bg-deep);
  --color-sidebar-item-bg:        rgba(240, 234, 216, 0.04);
  --color-sidebar-item-hover:     rgba(201, 145, 58, 0.10);
  --color-sidebar-item-active:    rgba(201, 145, 58, 0.15);
  --color-sidebar-border:         var(--color-separator-light);
  --color-sidebar-overlay:        rgba(0, 0, 0, 0.5);
  --color-sidebar-shadow:         rgba(0, 0, 0, 0.3);
  --color-sidebar-action-bg:      rgba(240, 234, 216, 0.05);
  --color-sidebar-empty-hint:     rgba(240, 234, 216, 0.30);
  
  /* --- File Chips --- */
  --color-file-chip-bg:           rgba(240, 234, 216, 0.05);
  --color-file-chip-border:       rgba(201, 145, 58, 0.22);
  --color-file-chip-hover-border: rgba(201, 145, 58, 0.42);
  --color-file-chip-hover-bg:     rgba(201, 145, 58, 0.08);
  --color-file-chip-uploading:    rgba(201, 145, 58, 0.18);
  --color-file-chip-ready:        rgba(72, 187, 120, 0.38);
  --color-file-chip-error:        rgba(224, 82, 82, 0.40);
  --color-file-chip-error-bg:     rgba(224, 82, 82, 0.06);
  --color-file-chip-spinner:      rgba(201, 145, 58, 0.28);
  --color-file-chip-spinner-light: rgba(224, 176, 106, 0.28);
  --color-file-chip-hover-bg-light: rgba(240, 234, 216, 0.10);
  --color-file-chip-remove-hover-bg: rgba(224, 82, 82, 0.16);
  --color-file-chip-retry-hover-bg: rgba(72, 187, 120, 0.16);
  --color-tooltip-bg:             #050d1e;
  
  /* --- Base Message File Chip (fallback) --- */
  --color-msg-file-chip-base-bg:  rgba(7, 17, 43, 0.35);
  --color-msg-file-chip-base-border: rgba(201, 145, 58, 0.28);
  
  /* --- Message File Chips (User) --- */
  --color-msg-file-chip-user-bg:  rgba(7, 17, 43, 0.25);
  --color-msg-file-chip-user-border: rgba(7, 17, 43, 0.35);
  --color-msg-file-chip-user-border-accent: rgba(201, 145, 58, 0.35);
  --color-msg-file-chip-user-hover-bg: rgba(6, 14, 32, 0.95);
  --color-msg-file-chip-user-text: rgba(7, 17, 43, 0.75);
  --color-msg-file-chip-user-size: rgba(255, 255, 255, 0.55);
  --color-msg-file-chip-user-hint: rgba(255, 255, 255, 0.4);
  
  /* --- Message File Chips (Bot) --- */
  --color-msg-file-chip-bot-bg:   rgba(7, 17, 43, 1);
  --color-msg-file-chip-bot-border: rgba(201, 145, 58, 0.6);
  --color-msg-file-chip-bot-hover-bg: rgba(0, 0, 0, 0.95);
  --color-msg-file-chip-bot-hover-border: rgba(201, 145, 58, 0.55);
  --color-msg-file-chip-bot-size: rgba(240, 234, 216, 0.5);
  --color-msg-file-chip-bot-hint: rgba(240, 234, 216, 0.35);
  --color-msg-file-chip-bot-name: rgba(240, 234, 216, 0.92);
  
  /* --- Message File Chips Common --- */
  --color-msg-chip-thumb-bg:      rgba(255, 255, 255, 0.1);
  --color-msg-chip-name-user:     rgba(255, 255, 255, 0.95);
  --color-msg-file-thumb-overlay: rgba(0, 0, 0, 0.6);
  --color-msg-chip-icon-user:     rgba(7, 17, 43, 0.5);
  --color-msg-chip-icon-bot:      rgba(201, 145, 58, 0.2);
  
  /* --- Failed Message --- */
  --color-failed-message-start:   rgba(224, 82, 82, 0.3);
  --color-failed-message-end:     rgba(224, 82, 82, 0.2);
  --color-failed-badge-bg:        rgba(224, 82, 82, 0.15);
  
  /* --- Recording --- */
  --color-rec-dot:                var(--color-error);
  --color-rec-wave-start:         var(--color-accent-dark);
  --color-rec-wave-end:           var(--color-accent-light);
  --color-rec-shadow:             rgba(245, 101, 101, 0.55);
  --color-rec-spinner-border:     rgba(201, 145, 58, 0.20);
  --color-rec-cancel-hover-bg:    rgba(224, 82, 82, 0.20);
  
  /* --- Lightbox --- */
  --color-lightbox-overlay:       rgba(0, 0, 0, 0.92);
  --color-lightbox-close-bg:      rgba(255, 255, 255, 0.10);
  --color-lightbox-close-border:  rgba(255, 255, 255, 0.22);
  --color-lightbox-close-color:   rgba(255, 255, 255, 0.80);
  --color-lightbox-caption:       rgba(255, 255, 255, 0.55);
  --color-lightbox-shadow:        rgba(0, 0, 0, 0.55);
  
  /* --- Delete Modal --- */
  --color-delete-modal-overlay:   rgba(7, 17, 43, 0.94);
  --color-delete-modal-icon-bg:   rgba(224, 82, 82, 0.12);
  --color-delete-modal-icon-shadow: rgba(245, 101, 101, 0.3);
  --color-delete-modal-conv-bg:   rgba(201, 145, 58, 0.1);
  --color-delete-modal-warning-bg: rgba(245, 101, 101, 0.08);
  --color-delete-modal-btn-cancel-bg: rgba(240, 234, 216, 0.06);
  --color-delete-modal-btn-cancel-hover: rgba(240, 234, 216, 0.12);
  --color-delete-modal-shadow:    rgba(0, 0, 0, 0.6);
  --color-delete-modal-border:    rgba(201, 145, 58, 0.2);
  
  /* --- Welcome Screen Colors --- */
  --color-welcome-accent-line:    linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  --color-welcome-avatar-gradient: linear-gradient(145deg, rgba(201, 145, 58, 0.18) 0%, rgba(201, 145, 58, 0.06) 100%);
  --color-welcome-avatar-border:  rgba(201, 145, 58, 0.30);
  --color-welcome-avatar-shadow:  0 0 0 8px rgba(201, 145, 58, 0.05);
  --color-welcome-avatar-box-shadow: var(--color-welcome-avatar-shadow), var(--shadow-avatar);
  --color-welcome-avatar-drop-shadow: rgba(201, 145, 58, 0.5);
  --color-welcome-pulse-border:   rgba(201, 145, 58, 0.18);
  --color-welcome-status-shadow:  rgba(61, 184, 122, 0.6);
  --color-welcome-divider-text:   rgba(240, 234, 216, 0.25);
  --color-welcome-chip-bg:        rgba(240, 234, 216, 0.03);
  --color-welcome-chip-border:    rgba(201, 145, 58, 0.18);
  --color-welcome-chip-hover-border: rgba(201, 145, 58, 0.45);
  --color-welcome-chip-overlay:   rgba(201, 145, 58, 0.10);
  --color-welcome-chip-overlay-gradient: linear-gradient(135deg, rgba(201, 145, 58, 0.10), transparent);
  --color-welcome-chip-icon-bg:   rgba(201, 145, 58, 0.12);
  --color-welcome-chip-shadow:    rgba(0, 0, 0, 0.2);
  
  /* --- Inline Edit --- */
  --color-inline-edit-bg:         rgba(0, 0, 0, 0.4);
  --color-inline-edit-border:     rgba(201, 145, 58, 0.25);
  --color-inline-edit-files-chip-bg: rgba(0, 0, 0, 0.5);
  
  /* --- File Attachments Bar --- */
  --color-attachments-bar-bg:     rgba(7, 17, 43, 0.40);
  --color-attachments-fade-start: rgba(7, 17, 43, 0.7);
  --color-attachments-fade-end:   transparent;
  
  /* --- Scrollbar Expanded --- */
  --color-scrollbar-expanded-track: rgba(240, 234, 216, 0.05);
  --color-scrollbar-expanded-thumb: rgba(201, 145, 58, 0.25);
  --color-scrollbar-expanded-thumb-hover: rgba(201, 145, 58, 0.45);
  
  /* --- Highlight Flash --- */
  --color-highlight-flash:        rgba(201, 145, 58, 0.15);
  
  /* --- File Type Icons --- */
  --color-pdf-icon:               #ff6b6b;
  --color-word-icon:              #6b9fff;
  --color-excel-icon:             #4caf50;
  --color-image-icon:             #ffa726;
  --color-white:                  #ffffff;
  
  /* --- Typography --- */
  --font-primary:                 'Montserrat', sans-serif;
  --font-serif:                   'Cormorant Garant', 'Georgia', serif;

  /* --- Spacing --- */
  --sp-xs:                        0.4rem;
  --sp-sm:                        0.75rem;
  --sp-md:                        1.25rem;
  --sp-lg:                        2rem;
  --sp-xl:                        3rem;

  /* --- Radius --- */
  --radius-sm:                    6px;
  --radius-md:                    12px;
  --radius-lg:                    16px;
  --radius-xl:                    18px;
  --radius-2xl:                   20px;
  --radius-3xl:                   24px;
  --radius-pill:                  50px;
  --radius-round:                 50%;

  /* --- Shadows --- */
  --shadow-sm:                    0 1px 3px var(--color-chatbot-shadow-light);
  --shadow-md:                    0 6px 22px var(--color-chatbot-shadow);
  --shadow-lg:                    0 10px 30px var(--color-chatbot-shadow-light);
  --shadow-xl:                    0 20px 50px var(--color-chatbot-shadow);
  --shadow-gold:                  0 3px 12px var(--color-send-btn-shadow);
  --shadow-gold-lg:               0 6px 20px var(--color-send-btn-shadow-hover);
  --shadow-card:                  0 24px 60px rgba(0, 0, 0, 0.50);
  --shadow-input:                 0 0 0 3px rgba(201, 145, 58, 0.28);
  --shadow-btn:                   0 6px 24px rgba(201, 145, 58, 0.35);
  --shadow-dropdown:              0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-delete-modal:          0 25px 50px -12px var(--color-delete-modal-shadow);
  --shadow-chip-hover:            0 4px 14px rgba(0, 0, 0, 0.2);
  --shadow-chip:                  0 3px 10px rgba(0, 0, 0, 0.3);
  --shadow-glow-gold:             0 0 0 8px rgba(201, 145, 58, 0.05);
  --shadow-avatar:                0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-tooltip:               0 6px 18px rgba(0, 0, 0, 0.45);
  --shadow-sidebar:               4px 0 20px var(--color-sidebar-shadow);
  --shadow-delete-btn:            0 2px 8px var(--color-delete-btn-shadow);
  --shadow-delete-btn-hover:      0 6px 16px var(--color-delete-btn-shadow-hover);
  
  /* --- Notification --- */
  --shadow-notification:          0 12px 28px rgba(0, 0, 0, 0.25);
  --color-notification-bg:        linear-gradient(135deg, rgba(7, 17, 43, 0.95) 0%, rgba(10, 31, 78, 0.95) 100%);
  --notification-gold-shadow:     rgba(201, 145, 58, 0.4);
  --notification-error-shadow:    rgba(224, 82, 82, 0.4);
  --notification-info-shadow:     rgba(69, 202, 255, 0.4);

  /* --- Motion --- */
  --ease-cinematic:               cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring:                  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:                     cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast:                0.15s;
  --duration-base:                0.2s;
  --duration-medium:              0.25s;
  --duration-slow:                0.3s;
  --duration-bounce:              0.32s;
  --duration-epic:                1.2s;
  
  /* --- Z-Index Layers --- */
  --z-chatbot:                    1000;
  --z-chatbot-toggle:             999;
  --z-sidebar-overlay:            1005;
  --z-mobile-sidebar:             1010;
  --z-lightbox:                   100000;
  --z-delete-modal:               10000;
  --z-notification:               10000;
  --z-tooltip:                    10000;
  
  /* --- Animations --- */
  --animation-msg-in:             msgIn 0.28s ease-out both;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
* { box-sizing: border-box; }

/* ============================================================
   CHATBOT PANEL — WIDGET (non-expanded)
   ============================================================ */
.chatbot {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 360px;
  height: 580px;
  border-radius: var(--radius-3xl);
  border: 1px solid var(--color-chatbot-border);
  background: var(--color-chatbot-bg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-chatbot);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.96);
  transition: opacity var(--duration-slow) var(--ease-cinematic),
              transform var(--duration-slow) var(--ease-cinematic),
              visibility var(--duration-slow) ease;
  pointer-events: none;
}

.chatbot.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

/* ============================================================
   EXPANDED MODE
   ============================================================ */
.chatbot.expanded {
  position: fixed;
  top: 0 !important; left: 0 !important;
  right: 0 !important; bottom: 0 !important;
  width: 100vw !important;
  height: 100dvh !important;
  max-width: none !important;
  max-height: none !important;
  border-radius: 0 !important;
  margin: 0 !important;
  z-index: calc(var(--z-chatbot) + 1);
}

@supports not (height: 100dvh) {
  .chatbot.expanded { height: 100% !important; }
}

.chatbot.expanded.keyboard-open { height: 100% !important; position: fixed !important; }

.typing-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
  animation: typingBounce var(--duration-medium) var(--ease-cinematic) infinite;
}

@keyframes typingBounce {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50%       { transform: translateY(-5px); opacity: 1; }
}

/* ============================================================
   HEADER
   ============================================================ */
.chatbot-header {
  padding: var(--sp-md) 18px;
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  background: linear-gradient(135deg, var(--color-chatbot-header-start) 0%, var(--color-chatbot-header-end) 100%);
  border-bottom: 1px solid var(--color-separator-light);
  flex-shrink: 0;
}

.chatbot:not(.expanded) .chatbot-header {
  border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
}

.chatbot-avatar {
  width: 42px; height: 42px;
  border-radius: var(--radius-round);
  background: var(--color-avatar-bot-bg);
  border: 1px solid var(--color-avatar-bot-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--color-avatar-bot-icon);
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px var(--color-accent-glow));
}

.chatbot-info h3 {
  font-size: 0.9rem; font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-primary); margin: 0;
}

.status { font-size: 0.72rem; color: var(--color-status-offline); }

.status.online::before {
  content: "●"; margin-right: 5px;
  color: var(--color-status-online); font-size: 0.65rem;
}

.header-actions {
  display: flex; gap: 8px;
  margin-left: auto; align-items: center;
}

.chatbot-mobile-menu {
  display: none;
  background: var(--color-close-btn-bg);
  border: 1px solid var(--color-close-btn-border);
  color: var(--color-close-btn-text);
  width: 32px; height: 32px;
  border-radius: var(--radius-round);
  cursor: pointer;
  align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: all var(--duration-base);
}

.chatbot-mobile-menu:hover {
  background: var(--color-quick-action-hover-bg);
  border-color: var(--color-accent); color: var(--color-accent);
}

.chatbot-close,
.chatbot-expand {
  background: var(--color-close-btn-bg);
  border: 1px solid var(--color-close-btn-border);
  color: var(--color-close-btn-text);
  width: 32px; height: 32px;
  border-radius: var(--radius-round);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
  transition: all var(--duration-base);
}

.chatbot-close:hover {
  background: var(--color-close-btn-hover-bg);
  color: var(--color-close-btn-hover-text);
  transform: rotate(90deg);
}

.chatbot-expand:hover {
  background: var(--color-quick-action-hover-bg);
  border-color: var(--color-accent); color: var(--color-accent);
  transform: scale(1.05);
}

/* ============================================================
   MESSAGES AREA
   ============================================================ */
.chatbot-messages {
  flex: 1;
  padding: 18px var(--sp-md);
  overflow-y: auto;
  background: linear-gradient(180deg, var(--color-bg-gradient-start) 0%, var(--color-bg-gradient-end) 100%);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
  min-height: 0;
}

@media (min-width: 769px) {
  .chatbot.expanded .chatbot-messages {
    padding: 28px clamp(32px, 10%, 120px);
  }
}

.chatbot.expanded .chatbot-messages {
  flex: 1; overflow-y: auto; min-height: 0;
  padding-bottom: max(16px, env(safe-area-inset-bottom));
}

.chatbot-messages::-webkit-scrollbar { width: 3px; }
.chatbot-messages::-webkit-scrollbar-track { background: var(--color-scrollbar-track); }
.chatbot-messages::-webkit-scrollbar-thumb { background: var(--color-scrollbar-thumb); border-radius: 2px; }

.message {
  display: flex; gap: 10px;
  animation: var(--animation-msg-in);
}

@keyframes msgIn {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.message-avatar {
  width: 30px; height: 30px;
  border-radius: var(--radius-round);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; flex-shrink: 0; margin-top: 2px;
}

.bot-message .message-avatar {
  background: var(--color-avatar-bot-bg);
  border: 1px solid var(--color-avatar-bot-border);
  color: var(--color-avatar-bot-icon);
}

.user-message { flex-direction: row-reverse; }

.user-message .message-avatar {
  background: var(--color-avatar-user-bg);
  border: 1px solid var(--color-avatar-user-border);
  color: var(--color-avatar-user-icon);
}

.message-content {
  max-width: min(72%, 520px);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

@media (min-width: 769px) {
  .chatbot.expanded .message-content {
    max-width: min(60%, 580px);
  }
}

.user-message .message-content { align-items: flex-end; }

.message-content p {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.85rem;
  line-height: 1.55;
  margin: 0;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: normal;
}

.bot-message .message-content p {
  background: var(--color-bot-bubble-bg);
  border: 1px solid var(--color-bot-bubble-border);
  color: var(--color-bot-bubble-text);
  border-radius: 4px 14px 14px 14px;
}

.user-message .message-content p {
  background: linear-gradient(135deg, var(--color-user-bubble-start), var(--color-user-bubble-end));
  color: var(--color-user-bubble-text);
  font-weight: 600;
  border-radius: 14px 4px 14px 14px;
}

.message-time {
  font-size: 0.68rem;
  color: var(--color-text-light);
  padding: 0 4px;
}

.message-actions {
  display: flex; gap: 8px;
  margin-top: 4px;
  opacity: 1;
  transition: opacity var(--duration-base);
}

.msg-action-btn {
  background: none; border: none;
  color: var(--color-text-light);
  cursor: pointer;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all var(--duration-base);
}

.msg-action-btn:hover { color: var(--color-accent); background: var(--color-accent-soft); }

/* ============================================================
   INPUT AREA — textarea with auto-resize
   ============================================================ */
.chatbot-input {
  padding: 12px 14px max(14px, env(safe-area-inset-bottom));
  background: var(--color-chatbot-bg);
  border-top: 1px solid var(--color-separator-input);
  flex-shrink: 0;
}

@media (min-width: 769px) {
  .chatbot.expanded .chatbot-input {
    padding: 14px clamp(32px, 10%, 120px) max(16px, env(safe-area-inset-bottom));
  }
}

@media (max-width: 768px) {
  .chatbot.expanded .chatbot-input {
    padding: 12px 12px max(12px, env(safe-area-inset-bottom));
  }
}

.chatbot.expanded.keyboard-open .chatbot-input { padding-bottom: 8px; }

.input-toolbar { display: none; }

.chatbot-input .input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-xl);
  padding: 4px 4px 4px 10px;
  transition: border-color var(--duration-base), box-shadow var(--duration-base);
}

.chatbot-input .input-wrapper:focus-within {
  border-color: var(--color-input-border-focus);
  box-shadow: 0 0 0 3px var(--color-input-focus-shadow);
}

.chatbot-input .input-wrapper textarea {
  flex: 1;
  min-width: 0;
  padding: 7px 6px;
  background: transparent;
  border: none;
  border-radius: 0;
  font-family: var(--font-primary);
  font-size: 0.85rem;
  color: var(--color-input-text);
  outline: none;
  resize: none;
  overflow-y: auto;  
  min-height: 36px;
  max-height: 120px;
  line-height: 1.5;
  display: block;
  word-break: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.chatbot-input .input-wrapper textarea::-webkit-scrollbar {
  display: none;
  width: 0;
  background: transparent;
}

.chatbot-input .input-wrapper textarea::placeholder { color: var(--color-input-placeholder); }

.chatbot-input .input-wrapper textarea:focus {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.input-tool-btn {
  width: 30px; height: 30px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem;
  background: transparent; border: none;
  border-radius: var(--radius-round);
  color: var(--color-quick-action-text);
  cursor: pointer;
  transition: background var(--duration-base), color var(--duration-base);
}

.input-tool-btn:hover { background: var(--color-quick-action-hover-bg); color: var(--color-accent); }

.input-tool-btn.recording { color: var(--color-error); animation: pulse 1s infinite; }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }

@media (max-width: 768px) { .input-tool-btn { width: 34px; height: 34px; font-size: 0.85rem; } }

.send-btn {
  width: 34px; height: 34px;
  flex-shrink: 0;
  border: none;
  border-radius: var(--radius-round);
  background: linear-gradient(135deg, var(--color-send-btn-start), var(--color-send-btn-end));
  color: var(--color-send-btn-text);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.82rem;
  transition: transform var(--duration-base), box-shadow var(--duration-base);
  box-shadow: var(--shadow-gold);
  position: relative;
}

.send-btn i { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.send-btn:hover { transform: scale(1.08); box-shadow: var(--shadow-gold-lg); }

@media (max-width: 768px) { .send-btn { width: 38px; height: 38px; } }

.cancel-edit-btn {
  width: 38px; height: 38px;
  border: 1px solid var(--color-error-border);
  border-radius: var(--radius-round);
  background: var(--color-error-bg);
  color: var(--color-error);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: all var(--duration-base);
  margin-left: 8px; flex-shrink: 0;
}

.cancel-edit-btn:hover { background: var(--color-error-bg-light); border-color: var(--color-error); transform: scale(1.05); }
.cancel-edit-btn:active { transform: scale(0.95); }

.input-hint {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  text-align: right;
  margin-top: 4px;
  opacity: 0;
  transition: opacity var(--duration-base);
  user-select: none;
}

.chatbot-input .input-wrapper:focus-within + .input-hint { opacity: 1; }

/* ============================================================
   TOGGLE BUTTON (FAB)
   ============================================================ */
.chatbot-toggle { position: fixed; bottom: 22px; right: 22px; z-index: var(--z-chatbot-toggle); }

.chatbot-toggle button {
  width: 56px; height: 56px;
  border: 1px solid var(--color-toggle-border);
  border-radius: var(--radius-round);
  background: linear-gradient(135deg, var(--color-toggle-bg-start), var(--color-toggle-bg-end));
  color: var(--color-accent);
  font-size: 1.3rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md), 0 0 0 0 var(--color-toggle-glow);
  transition: all var(--duration-slow);
  position: relative;
}

.chatbot-toggle button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), 0 0 0 6px var(--color-toggle-glow);
  border-color: var(--color-toggle-border-hover);
}

.chat-notification { display: none !important; }

/* ============================================================
   EXPANDED LAYOUT — Sidebar + Main
   ============================================================ */
.chatbot-sidebar { display: none; }

.chatbot.expanded .chatbot-expanded-layout {
  display: flex; width: 100%; height: 100%;
  background: var(--color-chatbot-bg);
}

.chatbot:not(.expanded) .chatbot-expanded-layout {
  display: flex; flex-direction: column; height: 100%;
}

.chatbot.expanded .chatbot-sidebar {
  display: flex;
  width: 280px;
  background: linear-gradient(180deg, var(--color-sidebar-bg-start) 0%, var(--color-sidebar-bg-end) 100%);
  border-right: 1px solid var(--color-sidebar-border);
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--color-sidebar-border);
  display: flex; justify-content: space-between; align-items: center;
}

.sidebar-header h3 {
  color: var(--color-text-primary); font-size: 0.9rem; margin: 0;
  display: flex; align-items: center; gap: 8px;
}

.new-chat-btn {
  background: var(--color-accent); border: none;
  width: 32px; height: 32px;
  border-radius: 8px;
  color: var(--color-bg-deep);
  cursor: pointer;
  transition: all var(--duration-base);
}

.new-chat-btn:hover { transform: scale(1.05); box-shadow: var(--shadow-gold); }

.conversations-list {
  flex: 1; overflow-y: auto; padding: 12px;
  min-height: 0; scrollbar-width: none; -ms-overflow-style: none;
}

.conversations-list::-webkit-scrollbar { display: none; width: 0; background: transparent; }

/* ============================================================
   SIDEBAR EMPTY STATE
   ============================================================ */
.sidebar-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
  height: 100%;
  gap: 10px;
  animation: sidebarEmptyFade var(--duration-base) ease;
}

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

.sidebar-empty-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-round);
  background: var(--color-accent-ultra-soft);
  border: 1px dashed var(--color-accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}

.sidebar-empty-icon i {
  font-size: 1.4rem;
  color: var(--color-accent-dim);
}

.sidebar-empty-title {
  color: var(--color-text-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0;
}

.sidebar-empty-hint {
  color: var(--color-sidebar-empty-hint);
  font-size: 0.75rem;
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.sidebar-empty-hint i {
  color: var(--color-accent-semi);
  font-size: 0.7rem;
}

/* ============================================================
   CONVERSATION ITEMS
   ============================================================ */
.conversation-item {
  padding: 12px; margin-bottom: 8px;
  border-radius: 8px;
  background: var(--color-sidebar-item-bg);
  border: 1px solid var(--color-separator-soft);
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px;
  transition: all var(--duration-base);
}

.conversation-item:hover { background: var(--color-sidebar-item-hover); border-color: var(--color-accent-border); }
.conversation-item.active { background: var(--color-sidebar-item-active); border-color: var(--color-accent); }

.conv-select-zone {
  flex: 1; min-width: 0;
  display: flex; align-items: center; gap: 10px;
  cursor: pointer;
}

.conv-select-zone i { color: var(--color-accent); font-size: 0.8rem; flex-shrink: 0; }

.conv-actions {
  display: flex; gap: 6px;
  flex-shrink: 0; margin-left: auto;
  opacity: 0; visibility: hidden;
  transition: opacity var(--duration-fast) ease, visibility var(--duration-fast) ease;
}

.conversation-item:hover .conv-actions { opacity: 1; visibility: visible; }

@media (max-width: 768px) { .conv-actions { opacity: 1 !important; visibility: visible !important; } }

.conversation-item.renaming .conv-actions { display: none !important; opacity: 0 !important; visibility: hidden !important; }

.conv-name {
  flex: 1; color: var(--color-text-primary); font-size: 0.85rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.conv-action-btn {
  background: none; border: none;
  color: var(--color-text-light);
  cursor: pointer; padding: 4px 6px;
  border-radius: 4px;
  transition: all var(--duration-base);
  min-width: 28px; min-height: 28px;
  display: flex; align-items: center; justify-content: center;
}

.conv-action-btn:hover { color: var(--color-accent); background: var(--color-accent-soft); }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--color-sidebar-border);
  display: flex; gap: 10px;
}

.sidebar-action-btn {
  flex: 1; padding: 8px;
  background: var(--color-sidebar-action-bg);
  border: 1px solid var(--color-separator-soft);
  border-radius: 6px;
  color: var(--color-text-light);
  cursor: pointer; font-size: 0.8rem;
  transition: all var(--duration-base);
}

.sidebar-action-btn:hover { background: var(--color-accent-soft); border-color: var(--color-accent); color: var(--color-accent); }

/* Export button hidden */
.sidebar-action-btn.export-btn { display: none !important; }

.chatbot-main {
  flex: 1; display: flex; flex-direction: column;
  background: linear-gradient(180deg, var(--color-bg-gradient-start) 0%, var(--color-bg-gradient-end) 100%);
  min-height: 0;
}

/* ============================================================
   MOBILE SIDEBAR OVERLAY
   ============================================================ */
.mobile-sidebar-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-sidebar-overlay);
  z-index: var(--z-sidebar-overlay);
  display: none; opacity: 0;
  transition: opacity var(--duration-slow) ease;
  pointer-events: none;
}

.mobile-sidebar-overlay.active { display: block; opacity: 1; pointer-events: auto; }
.mobile-sidebar-overlay        { display: none !important; }

body.sidebar-open { overflow: hidden; position: fixed; width: 100%; height: 100%; }

/* ============================================================
   MOBILE OPTIMISATIONS
   ============================================================ */
@media (max-width: 768px) {
  .chatbot.expanded .chatbot-mobile-menu { display: flex; }

  .chatbot.expanded .chatbot-sidebar {
    position: fixed; left: -280px; top: 0; bottom: 0; width: 280px;
    z-index: var(--z-mobile-sidebar);
    transition: left var(--duration-slow) var(--ease-out);
    box-shadow: none; border-radius: 0; pointer-events: none;
  }

  .chatbot.expanded .chatbot-sidebar.mobile-open {
    left: 0; box-shadow: var(--shadow-sidebar); pointer-events: auto;
  }

  .chatbot-sidebar.mobile-open * { pointer-events: auto; }
  .chatbot.expanded .chatbot-main { width: 100%; }
  .chatbot.expanded .chatbot-header { padding: var(--sp-sm) 16px; }
  .chatbot.expanded .chatbot-info h3 { font-size: 0.85rem; }
  .chatbot.expanded .message-content { max-width: 85%; }
  .chatbot.expanded .message-content p { padding: 8px 12px; font-size: 0.85rem; }
  .chatbot.expanded .header-actions { gap: 6px; }
  .chatbot.expanded .conversation-item { padding: 14px 12px; }
  .chatbot.expanded .conv-name { font-size: 0.9rem; }
  .chatbot.expanded .sidebar-action-btn { padding: 10px; font-size: 0.85rem; }
  .chatbot.expanded .new-chat-btn { width: 36px; height: 36px; }  
  .chatbot.expanded .conversation-item.renaming .conv-actions { display: none !important; }
}

@media (max-width: 480px) {
  .chatbot.expanded .message-content  { max-width: 90%; }
  .chatbot.expanded .chatbot-messages { padding: 12px 10px; }
}

@media (max-width: 896px) and (orientation: landscape) {
  .chatbot.expanded .chatbot-messages   { max-height: calc(100vh - 120px); }
  .chatbot.expanded .conversations-list { max-height: calc(100vh - 140px); }
}

/* ============================================================
   FILE PREVIEW
   ============================================================ */
.file-preview { margin-bottom: 8px; }
.file-preview img { max-width: 200px; border-radius: 8px; border: 1px solid var(--color-separator-light); }

/* ============================================================
   INLINE EDIT — bubble width lock + no scrollbar
   ============================================================ */
.message-content.editing-active {
  flex-shrink: 0;
  flex-grow: 0;
  animation: editFadeIn var(--duration-fast) ease;
}

.inline-edit-container {
  width: 100%;
  box-sizing: border-box;
}

.inline-edit-textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  background: var(--color-input-bg);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--color-input-text);
  resize: vertical; 
  overflow-y: auto; 
  min-height: 80px;
  max-height: 300px; 
  outline: none;
  display: block;
  transition: border-color var(--duration-base), box-shadow var(--duration-base);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.inline-edit-textarea::-webkit-scrollbar {
  display: none;
  width: 0;
  background: transparent;
}

.inline-edit-textarea {
  -webkit-overflow-scrolling: touch;
}

.inline-edit-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-input-focus-shadow);
}

.inline-edit-actions {
  display: flex; gap: 10px;
  margin-top: 10px;
  justify-content: flex-end;
}

.inline-edit-cancel {
  padding: 6px 16px;
  background: var(--color-quick-action-bg);
  border: 1px solid var(--color-quick-action-border);
  border-radius: var(--radius-pill);
  color: var(--color-quick-action-text);
  font-size: 0.8rem; font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-base);
}

.inline-edit-cancel:hover { background: var(--color-error-bg); border-color: var(--color-error); color: var(--color-error); }

.inline-edit-send {
  padding: 6px 20px;
  background: linear-gradient(135deg, var(--color-send-btn-start), var(--color-send-btn-end));
  border: none;
  border-radius: var(--radius-pill);
  color: var(--color-send-btn-text);
  font-size: 0.8rem; font-weight: 600;
  cursor: pointer;
  transition: all var(--duration-base);
  box-shadow: var(--shadow-gold);
}

.inline-edit-send:hover { transform: translateY(-1px); box-shadow: var(--shadow-gold-lg); }

.bot-message .inline-edit-textarea { background: var(--color-bot-bubble-bg); border-color: var(--color-bot-bubble-border); }
.bot-message .inline-edit-send { background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent)); }

.message.editing-highlight { animation: highlightFlash var(--duration-medium) ease-in-out; }

@keyframes highlightFlash {
  0%, 100% { background: transparent; }
  50%       { background: var(--color-highlight-flash); border-radius: 8px; }
}

@keyframes editFadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
  .inline-edit-actions { gap: 8px; }
  .inline-edit-cancel,
  .inline-edit-send    { padding: 5px 12px; font-size: 0.75rem; }
}

/* ============================================================
   NOTIFICATION TOAST
   ============================================================ */
.chat-notification-toast {
  position: fixed; bottom: 100px; right: 30px;
  background: var(--color-accent); color: var(--color-bg-deep);
  padding: 10px 20px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 600;
  z-index: var(--z-notification); opacity: 0;
  transform: translateY(20px);
  transition: all var(--duration-slow) ease;
  box-shadow: var(--shadow-md);
}

.chat-notification-toast.show { opacity: 1; transform: translateY(0); }

/* ============================================================
   SAFE AREA + SMALL SCREEN OVERRIDES
   ============================================================ */
@supports (padding: max(0px)) {
  .chatbot { padding-left: max(0px, env(safe-area-inset-left)); padding-right: max(0px, env(safe-area-inset-right)); }
}

@media (max-width: 480px) {
  .chatbot:not(.expanded) {
    width: calc(100vw - 20px); height: calc(100dvh - 20px);
    bottom: max(10px, env(safe-area-inset-bottom, 10px));
    top: max(10px, env(safe-area-inset-top, 10px));
    right: max(10px, env(safe-area-inset-right, 10px));
    left: max(10px, env(safe-area-inset-left, 10px));
    border-radius: var(--radius-3xl);
  }

  .chatbot:not(.expanded) .chatbot-header {
    padding-top: max(var(--sp-md), env(safe-area-inset-top, var(--sp-md)));
    padding-left: max(18px, env(safe-area-inset-left, 18px));
    padding-right: max(18px, env(safe-area-inset-right, 18px));
    border-radius: calc(var(--radius-3xl) + 2px) calc(var(--radius-3xl) + 2px) 0 0;
  }

  .chatbot:not(.expanded) .chatbot-messages { padding-bottom: max(18px, env(safe-area-inset-bottom, 18px)); }
  .chatbot:not(.expanded) .chatbot-input    { padding-bottom: max(var(--sp-md), env(safe-area-inset-bottom, var(--sp-md))); }
  .chatbot-toggle { bottom: max(22px, env(safe-area-inset-bottom, 22px)); right: max(22px, env(safe-area-inset-right, 22px)); }
}

@media (min-height: 900px) and (max-width: 480px) {
  .chatbot:not(.expanded) { max-height: 800px; top: 50%; transform: translateY(-50%); bottom: auto; }
}

/* ============================================================
   DELETE / CLEAR CONFIRMATION MODAL
   ============================================================ */
.chatbot-delete-modal-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-delete-modal-overlay);
  backdrop-filter: blur(8px);
  z-index: var(--z-delete-modal);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity var(--duration-medium) ease, visibility var(--duration-medium) ease;
}

.chatbot-delete-modal-overlay.active { opacity: 1; visibility: visible; }

.chatbot-delete-modal {
  background: linear-gradient(145deg, var(--color-bg-soft) 0%, var(--color-bg-deep) 100%);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-2xl);
  width: 90%; max-width: 400px;
  box-shadow: var(--shadow-delete-modal), 0 0 0 1px var(--color-delete-modal-border);
  animation: modalSlideIn var(--duration-bounce) var(--ease-out);
  overflow: hidden;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: scale(0.96) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.chatbot-delete-modal-header {
  padding: 22px 24px 12px 24px;
  border-bottom: 1px solid var(--color-separator-light);
  display: flex; align-items: center; gap: 14px;
}

.chatbot-delete-modal-icon {
  width: 44px; height: 44px;
  background: var(--color-delete-modal-icon-bg);
  border-radius: var(--radius-round);
  display: flex; align-items: center; justify-content: center;
}

.chatbot-delete-modal-icon i { font-size: 1.5rem; color: var(--color-error); filter: drop-shadow(0 0 4px var(--color-delete-modal-icon-shadow)); }

.chatbot-delete-modal-header h3 { color: var(--color-text-primary); font-size: 1.25rem; font-weight: 700; margin: 0; letter-spacing: -0.3px; }

.chatbot-delete-modal-body { padding: 20px 24px; color: var(--color-text-soft); font-size: 0.95rem; line-height: 1.55; }
.chatbot-delete-modal-body p { margin: 0 0 8px 0; }

.chatbot-delete-modal-conv-name {
  background: var(--color-delete-modal-conv-bg);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-md);
  padding: 10px 14px; margin: 14px 0;
  display: flex; align-items: center; gap: 10px;
  color: var(--color-accent); font-weight: 600; font-size: 0.9rem;
  word-break: break-word;
}

.chatbot-delete-modal-conv-name i { color: var(--color-accent); font-size: 0.9rem; flex-shrink: 0; }

.chatbot-delete-modal-warning {
  color: var(--color-error) !important; font-size: 0.8rem !important; margin-top: 12px !important;
  display: flex; align-items: center; gap: 6px;
  background: var(--color-delete-modal-warning-bg); padding: 8px 12px;
  border-radius: var(--radius-sm); border-left: 3px solid var(--color-error);
}

.chatbot-delete-modal-footer { padding: 12px 24px 22px 24px; display: flex; gap: 14px; justify-content: flex-end; }

.chatbot-delete-modal-btn {
  padding: 10px 22px; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 0.85rem; cursor: pointer;
  transition: all var(--duration-base);
  font-family: var(--font-primary);
  display: inline-flex; align-items: center; gap: 8px; border: none;
}

.chatbot-delete-modal-btn i { font-size: 0.85rem; }

.chatbot-delete-modal-btn.cancel-btn {
  background: var(--color-delete-modal-btn-cancel-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
}

.chatbot-delete-modal-btn.cancel-btn:hover {
  background: var(--color-delete-modal-btn-cancel-hover); border-color: var(--color-text-primary);
  color: var(--color-text-primary); transform: translateY(-1px);
}

.chatbot-delete-modal-btn.cancel-btn:active { transform: translateY(1px); }

.chatbot-delete-modal-btn.delete-confirm-btn {
  background: linear-gradient(135deg, var(--color-delete-btn-start), var(--color-delete-btn-end));
  color: white;
  box-shadow: var(--shadow-delete-btn);
}

.chatbot-delete-modal-btn.delete-confirm-btn:hover {
  background: linear-gradient(135deg, var(--color-delete-btn-hover-start), var(--color-delete-btn-hover-end));
  transform: translateY(-1px);
  box-shadow: var(--shadow-delete-btn-hover);
}

.chatbot-delete-modal-btn.delete-confirm-btn:active { transform: translateY(1px); }

@media (max-width: 480px) {
  .chatbot-delete-modal           { width: 92%; max-width: 340px; }
  .chatbot-delete-modal-header    { padding: 18px 18px 10px; gap: 10px; }
  .chatbot-delete-modal-icon      { width: 38px; height: 38px; }
  .chatbot-delete-modal-icon i    { font-size: 1.2rem; }
  .chatbot-delete-modal-header h3 { font-size: 1.1rem; }
  .chatbot-delete-modal-body      { padding: 16px 18px; font-size: 0.85rem; }
  .chatbot-delete-modal-conv-name { padding: 8px 12px; margin: 10px 0; font-size: 0.85rem; }
  .chatbot-delete-modal-footer    { padding: 10px 18px 18px; gap: 10px; }
  .chatbot-delete-modal-btn       { padding: 8px 18px; font-size: 0.8rem; }
}

@media (max-width: 896px) and (orientation: landscape) {
  .chatbot-delete-modal { max-height: 85vh; overflow-y: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .chatbot-delete-modal         { animation: none; }
  .chatbot-delete-modal-overlay { transition: none; }
}

/* ============================================================
   WELCOME SCREEN — Professional redesign
   ============================================================ */
.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 24px 20px 16px;
  animation: welcomeEnter var(--duration-bounce) var(--ease-out);
  gap: 0;
}

@keyframes welcomeEnter {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.welcome-screen::before {
  content: '';
  display: block;
  width: 36px;
  height: 2px;
  background: var(--color-welcome-accent-line);
  border-radius: 2px;
  margin-bottom: 28px;
  opacity: 0.7;
}

.welcome-avatar-wrap {
  position: relative;
  width: 72px;
  height: 72px;
  margin-bottom: 22px;
  flex-shrink: 0;
}

.welcome-avatar-bg {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  background: var(--color-welcome-avatar-gradient);
  border: 1px solid var(--color-welcome-avatar-border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: var(--color-welcome-avatar-box-shadow);
}

.welcome-avatar-bg i {
  font-size: 1.8rem;
  color: var(--color-accent);
  filter: drop-shadow(0 0 10px var(--color-welcome-avatar-drop-shadow));
}

.welcome-avatar-bg::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 26px;
  border: 1px solid var(--color-welcome-pulse-border);
  animation: welcomePulse var(--duration-epic) ease-in-out infinite;
}

@keyframes welcomePulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 0.2; transform: scale(1.06); }
}

.welcome-status-dot {
  position: absolute;
  bottom: 3px;
  right: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-success-dark);
  border: 2px solid var(--color-bg-deep);
  box-shadow: 0 0 6px var(--color-welcome-status-shadow);
}

.welcome-text {
  text-align: center;
  margin-bottom: 26px;
}

.welcome-text h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.welcome-text p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 260px;
}

.welcome-divider {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.welcome-divider::before,
.welcome-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-separator-soft);
}

.welcome-divider span {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-welcome-divider-text);
  white-space: nowrap;
}

.welcome-chips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 100%;
}

.welcome-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--color-welcome-chip-bg);
  border: 1px solid var(--color-welcome-chip-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  transition: all var(--duration-base);
  font-family: var(--font-primary);
  position: relative;
  overflow: hidden;
}

.welcome-chip::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-welcome-chip-overlay-gradient);
  opacity: 0;
  transition: opacity var(--duration-base);
}

.welcome-chip:hover {
  border-color: var(--color-welcome-chip-hover-border);
  transform: translateY(-1px);
  box-shadow: var(--shadow-chip-hover);
}

.welcome-chip:hover::before { opacity: 1; }

.welcome-chip:active { transform: translateY(0); }

.welcome-chip-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--color-welcome-chip-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.welcome-chip-icon i {
  font-size: 0.75rem;
  color: var(--color-accent);
}

.welcome-chip-text {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-light);
  line-height: 1.3;
}

@media (max-width: 768px) {
  .welcome-screen::before { margin-bottom: 20px; }
  .welcome-avatar-wrap { width: 60px; height: 60px; margin-bottom: 16px; }
  .welcome-avatar-bg { width: 60px; height: 60px; border-radius: 18px; }
  .welcome-avatar-bg i { font-size: 1.5rem; }
  .welcome-text h2 { font-size: 1.1rem; }
  .welcome-text p { font-size: 0.78rem; }
  .welcome-chip { padding: 8px 10px; }
  .welcome-chip-text { font-size: 0.72rem; }
}

@media (max-width: 360px) {
  .welcome-chips { grid-template-columns: 1fr; }
  .welcome-screen { padding: 16px 16px 12px; }
}

@media (min-width: 769px) {
  .chatbot.expanded .welcome-screen {
    max-width: 480px;
    margin: 0 auto;
    padding: 32px 24px 24px;
  }

  .chatbot.expanded .welcome-avatar-wrap { width: 88px; height: 88px; }
  .chatbot.expanded .welcome-avatar-bg { width: 88px; height: 88px; border-radius: 26px; }
  .chatbot.expanded .welcome-avatar-bg i { font-size: 2.2rem; }
  .chatbot.expanded .welcome-text h2 { font-size: 1.5rem; }
  .chatbot.expanded .welcome-text p { font-size: 0.88rem; max-width: 340px; }
  .chatbot.expanded .welcome-chips { gap: 10px; }
  .chatbot.expanded .welcome-chip { padding: 12px 14px; }
  .chatbot.expanded .welcome-chip-text { font-size: 0.8rem; }
}

.chatbot-messages .welcome-screen:only-child {
  margin-top: auto;
  margin-bottom: auto;
}

/* Failed message styling */
.user-message.failed-message .message-content p {
    background: linear-gradient(135deg, var(--color-failed-message-start), var(--color-failed-message-end));
    border: 1px solid var(--color-error-border);
    color: var(--color-text-primary);
}

.failed-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: 8px;
    font-size: 0.65rem;
    color: var(--color-error);
    background: var(--color-failed-badge-bg);
    padding: 2px 6px;
    border-radius: 12px;
}

.msg-action-btn.retry-btn {
    color: var(--color-accent);
}

.msg-action-btn.retry-btn:hover {
    background: var(--color-accent-soft);
    color: var(--color-accent-light);
}

@keyframes retrySpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.msg-action-btn.retry-btn:active i {
    animation: retrySpin var(--duration-medium) ease;
}

.typing-dot.offline {
    background: var(--color-error);
    animation: none;
}

/* ==========================================================================
   FILE ATTACHMENT CHIPS
   ========================================================================== */

.file-upload-alert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: var(--color-error-bg-alert);
  border-bottom: 1px solid var(--color-error-border-alert);
  font-size: 0.73rem;
  font-family: var(--font-primary);
  color: var(--color-error);
  flex-shrink: 0;
  animation: alertBannerIn var(--duration-fast) ease;
}

@keyframes alertBannerIn {
  from { opacity: 0; max-height: 0; padding-top: 0; padding-bottom: 0; }
  to   { opacity: 1; max-height: 40px; }
}

.file-upload-alert i { flex-shrink: 0; font-size: 0.78rem; }

.file-attachments-bar {
  display: flex;
  position: relative;
  z-index: 10;
  gap: 6px;
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--color-separator-input);
  flex-shrink: 0;
  animation: chipsBarIn var(--duration-fast) ease;
  background: var(--color-attachments-bar-bg);
  -webkit-overflow-scrolling: touch;
}

@keyframes chipsBarIn {
  from { opacity: 0; max-height: 0; padding-top: 0; padding-bottom: 0; }
  to   { opacity: 1; max-height: 190px; }
}

.chatbot:not(.expanded) .file-attachments-bar {
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  gap: 8px;
  max-height: 80px;
  align-items: center;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.chatbot:not(.expanded) .file-attachments-bar::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
  background: transparent;
}

.chatbot:not(.expanded) .file-chip {
  flex-shrink: 0;
  min-width: 140px;
  max-width: 170px;
  width: auto;
  margin: 0;
  animation: chipSlideIn var(--duration-fast) ease;
}

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

.chatbot:not(.expanded) .file-chip-thumb {
  width: 28px;
  height: 28px;
}

.chatbot:not(.expanded) .file-chip-name {
  max-width: 85px;
  font-size: 0.68rem;
}

.chatbot:not(.expanded) .file-chip-status {
  font-size: 0.6rem;
  white-space: nowrap;
}

.chatbot:not(.expanded) .file-chip-actions {
  gap: 1px;
}

.chatbot:not(.expanded) .file-chip-btn {
  width: 24px;
  height: 24px;
  font-size: 0.7rem;
}

.chatbot:not(.expanded) .file-chip::before,
.chatbot:not(.expanded) .file-chip::after {
  display: none;
}

.file-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 8px 6px 7px;
  background: var(--color-file-chip-bg);
  border: 1px solid var(--color-file-chip-border);
  border-radius: 10px;
  max-width: 185px;
  min-width: 130px;
  position: relative;
  z-index: 20;
  transition: border-color var(--duration-fast) ease, background var(--duration-fast) ease, transform var(--duration-fast) ease;
  animation: chipIn var(--duration-fast) var(--ease-out);
  cursor: default;
}

@keyframes chipIn {
  from { opacity: 0; transform: scale(0.88) translateY(4px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.file-chip:hover { border-color: var(--color-file-chip-hover-border); background: var(--color-file-chip-hover-bg); }

.file-chip.status-uploading { opacity: 0.80; border-color: var(--color-accent-border); }
.file-chip.status-parsing   { border-color: var(--color-accent-border); }
.file-chip.status-ready     { border-color: var(--color-file-chip-ready); background: var(--color-success-chip-bg); }
.file-chip.status-error     { border-color: var(--color-file-chip-error); background: var(--color-file-chip-error-bg); }

.file-chip-thumb {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-accent-soft);
  position: relative;
}

.file-chip-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
  display: block;
}

.file-chip-thumb i { font-size: 0.88rem; color: var(--color-accent); }
.file-chip.status-error .file-chip-thumb i { color: var(--color-error); opacity: 0.7; }

.file-chip-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.file-chip-name {
  font-size: 0.71rem;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 96px;
  font-family: var(--font-primary);
}

.file-chip-status {
  font-size: 0.64rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  font-family: var(--font-primary);
}

.file-chip.status-ready   .file-chip-status { color: var(--color-success); }
.file-chip.status-error   .file-chip-status { color: var(--color-error); }
.file-chip.status-uploading .file-chip-status { color: var(--color-accent); }
.file-chip.status-parsing   .file-chip-status { color: var(--color-accent-light); }

.chip-spinner {
  width: 9px;
  height: 9px;
  border: 1.5px solid var(--color-file-chip-spinner);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: chipSpin 0.75s linear infinite;
  flex-shrink: 0;
}

.file-chip.status-parsing .chip-spinner {
  border-color: var(--color-file-chip-spinner-light);
  border-top-color: var(--color-accent-light);
}

@keyframes chipSpin { to { transform: rotate(360deg); } }

.file-chip-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
  margin-left: auto;
}

.file-chip-btn {
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.62rem;
  color: var(--color-text-light);
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease, transform var(--duration-fast) ease;
  padding: 0;
  flex-shrink: 0;
}

.file-chip-btn:hover               { background: var(--color-file-chip-hover-bg-light); color: var(--color-text-primary); }
.file-chip-btn.remove-btn:hover    { background: var(--color-file-chip-remove-hover-bg); color: var(--color-error); }
.file-chip-btn.retry-file-btn:hover { background: var(--color-file-chip-retry-hover-bg); color: var(--color-success); }
.file-chip-btn:active              { transform: scale(0.88); }

.file-chip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 9px);
  left: 50%;
  top: auto; 
  margin-bottom: 0; 
  transform: translateX(-50%);
  background: var(--color-tooltip-bg);
  border: 1px solid var(--color-accent-border);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.67rem;
  font-family: var(--font-primary);
  color: var(--color-text-soft);
  white-space: pre-line;
  max-width: 210px;
  word-break: break-word;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) ease, visibility var(--duration-fast) ease;
  z-index: var(--z-tooltip) !important; 
  box-shadow: var(--shadow-tooltip);
  text-align: center;
  line-height: 1.45;
}

.file-chip::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 3px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-accent-border);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) ease, visibility var(--duration-fast) ease;
  z-index: var(--z-tooltip) !important; 
}

@media (hover: hover) {
  .file-chip:hover::before,
  .file-chip:hover::after {
    opacity: 1;
    visibility: visible;
  }
}

#attachFileBtn { position: relative; }

.attach-count-badge {
  position: absolute;
  top: -3px;
  right: -3px;
  width: 15px;
  height: 15px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-bg-deep);
  border-radius: 50%;
  font-size: 0.58rem;
  font-weight: 700;
  font-family: var(--font-primary);
  display: none;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 1px 4px var(--color-chatbot-shadow-light);
  pointer-events: none;
}

.attach-count-badge.visible {
  display: flex;
  animation: badgePop var(--duration-fast) var(--ease-out);
}

@keyframes badgePop {
  from { transform: scale(0); }
  to   { transform: scale(1); }
}

.msg-file-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 6px;
}

.msg-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  background: var(--color-msg-file-chip-base-bg);
  border: 1px solid var(--color-msg-file-chip-base-border);
  border-radius: 7px;
  font-size: 0.68rem;
  font-family: var(--font-primary);
  color: var(--color-text-light);
  max-width: 160px;
}

.user-message .msg-file-chip {
  background: var(--color-msg-file-chip-user-bg);
  border: 1px solid var(--color-msg-file-chip-user-border);
  border-color: var(--color-msg-file-chip-user-border-accent);
  color: var(--color-msg-file-chip-user-text);
}

.user-message .msg-file-chip:hover {
  background: var(--color-msg-file-chip-user-hover-bg);
  border-color: var(--color-msg-file-chip-user-border-accent);
}

.bot-message .msg-file-chip {
  background: var(--color-msg-file-chip-bot-bg);
  border-color: var(--color-msg-file-chip-bot-border);
  color: var(--color-text-light);
}

.bot-message .msg-file-chip:hover {
  background: var(--color-msg-file-chip-bot-hover-bg);
  border-color: var(--color-msg-file-chip-bot-hover-border);
}

.msg-file-chip i { font-size: 0.72rem; flex-shrink: 0; }

.msg-file-chip .msg-file-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 115px;
}

.msg-file-thumb {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  object-fit: cover;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .file-attachments-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 8px;
    max-height: 80px;
    align-items: center;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .file-attachments-bar::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
    background: transparent;
  }

  .file-chip {
    flex-shrink: 0;
    min-width: 140px;
    max-width: 170px;
    width: auto;
    margin: 0;
    animation: chipSlideIn var(--duration-fast) ease;
  }

  .file-chip-thumb {
    width: 28px;
    height: 28px;
  }

  .file-chip-name {
    max-width: 85px;
    font-size: 0.68rem;
  }

  .file-chip-status {
    font-size: 0.6rem;
    white-space: nowrap;
  }

  .file-chip-actions {
    gap: 1px;
  }

  .file-chip-btn {
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
  }

  .file-chip::before,
  .file-chip::after {
    display: none;
  }
}

@media (min-width: 769px) {
  .chatbot.expanded .file-attachments-bar {
    flex-wrap: wrap;
    overflow-x: visible;
    overflow-y: auto;
    max-height: 190px;
  }

  .chatbot.expanded .file-attachments-bar::-webkit-scrollbar {
    width: 3px;
    height: 3px;
  }

  .chatbot.expanded .file-attachments-bar::-webkit-scrollbar-track {
    background: var(--color-scrollbar-expanded-track);
    border-radius: 3px;
  }

  .chatbot.expanded .file-attachments-bar::-webkit-scrollbar-thumb {
    background: var(--color-scrollbar-expanded-thumb);
    border-radius: 3px;
  }

  .chatbot.expanded .file-attachments-bar::-webkit-scrollbar-thumb:hover {
    background: var(--color-scrollbar-expanded-thumb-hover);
  }

  .chatbot.expanded .file-chip {
    flex-shrink: 1;
    min-width: 130px;
    max-width: 185px;
  }

  .chatbot.expanded .file-chip-thumb {
    width: 32px;
    height: 32px;
  }

  .chatbot.expanded .file-chip-name {
    max-width: 96px;
    font-size: 0.71rem;
  }

  .chatbot.expanded .file-chip-status {
    font-size: 0.64rem;
  }

  .chatbot.expanded .file-chip::before,
  .chatbot.expanded .file-chip::after {
    display: block;
  }
}

@media (max-width: 480px) {
  .chatbot:not(.expanded) .file-attachments-bar,
  .file-attachments-bar {
    padding: 6px 10px;
    gap: 6px;
    max-height: 70px;
  }

  .chatbot:not(.expanded) .file-chip,
  .file-chip {
    min-width: 120px;
    max-width: 150px;
    padding: 4px 6px;
  }

  .chatbot:not(.expanded) .file-chip-thumb,
  .file-chip-thumb {
    width: 24px;
    height: 24px;
  }

  .chatbot:not(.expanded) .file-chip-name,
  .file-chip-name {
    max-width: 70px;
    font-size: 0.65rem;
  }

  .chatbot:not(.expanded) .file-chip-status,
  .file-chip-status {
    font-size: 0.55rem;
  }

  .chip-spinner {
    width: 7px;
    height: 7px;
    border-width: 1.2px;
  }
}

@media (max-width: 896px) and (orientation: landscape) {
  .chatbot:not(.expanded) .file-attachments-bar,
  .file-attachments-bar {
    max-height: 65px;
    padding: 5px 10px;
  }

  .chatbot:not(.expanded) .file-chip,
  .file-chip {
    min-width: 130px;
    padding: 4px 6px;
  }

  .chatbot:not(.expanded) .file-chip-thumb,
  .file-chip-thumb {
    width: 24px;
    height: 24px;
  }

  .chatbot:not(.expanded) .file-chip-name,
  .file-chip-name {
    max-width: 80px;
  }
}

.chatbot:not(.expanded) .file-attachments-bar {
  position: relative;
}

.chatbot:not(.expanded) .file-attachments-bar::before,
.chatbot:not(.expanded) .file-attachments-bar::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 24px;
  pointer-events: none;
  z-index: 5;
  opacity: 0;
  transition: opacity var(--duration-fast) ease;
}

.chatbot:not(.expanded) .file-attachments-bar::before {
  left: 0;
  background: linear-gradient(90deg, var(--color-attachments-fade-start), var(--color-attachments-fade-end));
}

.chatbot:not(.expanded) .file-attachments-bar::after {
  right: 0;
  background: linear-gradient(270deg, var(--color-attachments-fade-start), var(--color-attachments-fade-end));
}

.chatbot:not(.expanded) .file-attachments-bar:hover::before,
.chatbot:not(.expanded) .file-attachments-bar:hover::after {
  opacity: 1;
}

@media (max-width: 768px) {
  .chatbot:not(.expanded) .file-attachments-bar::before,
  .chatbot:not(.expanded) .file-attachments-bar::after {
    opacity: 0.6;
  }
}

/* ============================================================
   RECORDING — INLINE (lives inside the input pill)
   ============================================================ */

#chatInput.rec-hidden { display: none !important; }

.recording-inline-view,
.recording-processing-view {
  flex: 1;
  min-width: 0;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 6px 4px;
  min-height: 36px;
  align-self: stretch;
}

.recording-inline-view.active,
.recording-processing-view.active { display: flex; }

.rec-indicator { display: flex; align-items: center; gap: 5px; flex-shrink: 0; }

.rec-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-rec-dot);
  box-shadow: 0 0 6px var(--color-rec-shadow);
  animation: recBlink 1s ease-in-out infinite;
}

@keyframes recBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.2; }
}

.rec-label {
  font-size: 0.64rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--color-error);
  font-family: var(--font-primary);
}

.rec-waves {
  display: flex; align-items: center;
  gap: 2.5px; flex: 1;
  height: 22px; overflow: hidden;
}

.rec-waves span {
  display: inline-block; width: 3px;
  border-radius: 3px;
  background: linear-gradient(to top, var(--color-rec-wave-start), var(--color-rec-wave-end));
  transform-origin: center;
  animation: recWaveBar 1.15s ease-in-out infinite;
}

.rec-waves span:nth-child(1)  { height: 4px;  animation-delay: 0s;    }
.rec-waves span:nth-child(2)  { height: 12px; animation-delay: 0.08s; }
.rec-waves span:nth-child(3)  { height: 20px; animation-delay: 0.16s; }
.rec-waves span:nth-child(4)  { height: 14px; animation-delay: 0.24s; }
.rec-waves span:nth-child(5)  { height: 6px;  animation-delay: 0.32s; }
.rec-waves span:nth-child(6)  { height: 18px; animation-delay: 0.40s; }
.rec-waves span:nth-child(7)  { height: 22px; animation-delay: 0.48s; }
.rec-waves span:nth-child(8)  { height: 9px;  animation-delay: 0.56s; }
.rec-waves span:nth-child(9)  { height: 16px; animation-delay: 0.64s; }
.rec-waves span:nth-child(10) { height: 5px;  animation-delay: 0.72s; }
.rec-waves span:nth-child(11) { height: 13px; animation-delay: 0.80s; }
.rec-waves span:nth-child(12) { height: 19px; animation-delay: 0.88s; }

@keyframes recWaveBar {
  0%, 100% { transform: scaleY(0.15); opacity: 0.25; }
  50%       { transform: scaleY(1);   opacity: 1; }
}

.rec-timer {
  font-size: 0.76rem; font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
  font-family: var(--font-primary);
  flex-shrink: 0; min-width: 30px; text-align: right;
}

.rec-spinner {
  width: 15px; height: 15px;
  border: 2px solid var(--color-rec-spinner-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: recSpinAnim 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes recSpinAnim { to { transform: rotate(360deg); } }

.rec-processing-text {
  font-size: 0.82rem; font-style: italic;
  color: var(--color-text-muted);
  font-family: var(--font-primary);
}

#voiceRecordBtn.state-cancel {
  color: var(--color-error);
  background: var(--color-error-soft);
  border-radius: var(--radius-round);
}

#voiceRecordBtn.state-cancel:hover { background: var(--color-rec-cancel-hover-bg); }
#voiceRecordBtn.state-processing   { opacity: 0.35; pointer-events: none; }

.send-btn.state-confirm { animation: confirmGlow var(--duration-slow) ease-in-out infinite; }

@keyframes confirmGlow {
  0%, 100% { box-shadow: var(--shadow-gold); }
  50%       { box-shadow: 0 0 0 5px var(--color-send-btn-confirm-glow), var(--shadow-gold); }
}

.send-btn.state-processing { opacity: 0.35; pointer-events: none; }

@media (max-width: 768px) {
  .rec-waves span  { width: 2.5px; }
  .rec-timer       { font-size: 0.7rem; }
  .rec-label       { font-size: 0.6rem; }
}

/* ============================================================
   MESSAGE FILE CHIPS - IMPROVED VISIBILITY & LAYOUT
   ============================================================ */

.msg-file-chips {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
    margin-top: 4px;
    width: 100%;
}

.msg-file-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px 8px 10px;
    border-radius: 12px;
    max-width: 280px;
    min-width: 0;
    width: fit-content;
    cursor: pointer;
    transition: background var(--duration-fast) ease, border-color var(--duration-fast) ease, transform var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
    text-decoration: none;
    color: inherit;
    font-family: var(--font-primary);
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    box-sizing: border-box;
}

.msg-file-chip:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-chip-hover);
}

.msg-file-chip:active {
    transform: translateY(0);
}

.msg-file-chip.no-action {
    cursor: default;
    pointer-events: none;
    opacity: 0.72;
}

.user-message .msg-file-chip {
    background: var(--color-msg-file-chip-user-bg);
    border: 1px solid var(--color-msg-file-chip-user-border);
    border-color: var(--color-msg-file-chip-user-border-accent);
    color: var(--color-msg-file-chip-user-text);
}

.user-message .msg-file-chip:hover {
    background: var(--color-msg-file-chip-user-hover-bg);
    border-color: var(--color-msg-file-chip-user-border-accent);
}

.bot-message .msg-file-chip {
    background: var(--color-msg-file-chip-bot-bg);
    border-color: var(--color-msg-file-chip-bot-border);
    color: var(--color-text-light);
}

.bot-message .msg-file-chip:hover {
    background: var(--color-msg-file-chip-bot-hover-bg);
    border-color: var(--color-msg-file-chip-bot-hover-border);
}

.msg-chip-thumb-wrap {
    position: relative;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    background: var(--color-msg-chip-thumb-bg);
}

.msg-chip-thumb {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.msg-chip-thumb-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-msg-file-thumb-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    opacity: 0;
    transition: opacity var(--duration-fast) ease;
    font-size: 0.8rem;
    color: var(--color-white);
}

.msg-file-chip:hover .msg-chip-thumb-overlay {
    opacity: 1;
}

.msg-chip-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-message .msg-chip-icon {
    background: var(--color-msg-chip-icon-user);
}

.bot-message .msg-chip-icon {
    background: var(--color-msg-chip-icon-bot);
}

.msg-chip-icon i {
    font-size: 1.1rem;
}

.msg-chip-icon .fa-file-pdf { color: var(--color-pdf-icon); }
.msg-chip-icon .fa-file-word { color: var(--color-word-icon); }
.msg-chip-icon .fa-file-excel { color: var(--color-excel-icon); }
.msg-chip-icon .fa-file-image { color: var(--color-image-icon); }
.msg-chip-icon .fa-file-alt,
.msg-chip-icon .fa-file-text { color: var(--color-accent); }

.msg-chip-meta {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.msg-chip-name {
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.user-message .msg-chip-name {
    color: var(--color-msg-chip-name-user);
}

.bot-message .msg-chip-name {
    color: var(--color-msg-file-chip-bot-name);
}

.msg-chip-size {
    font-size: 0.68rem;
}

.user-message .msg-chip-size {
    color: var(--color-msg-file-chip-user-size);
}

.bot-message .msg-chip-size {
    color: var(--color-msg-file-chip-bot-size);
}

.msg-chip-action-hint {
    font-size: 0.7rem;
    flex-shrink: 0;
    opacity: 0;
    transform: translateX(-3px);
    transition: opacity var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.user-message .msg-chip-action-hint {
    color: var(--color-msg-file-chip-user-hint);
}

.bot-message .msg-chip-action-hint {
    color: var(--color-msg-file-chip-bot-hint);
}

.msg-file-chip:hover .msg-chip-action-hint {
    opacity: 1;
    transform: translateX(0);
}

@media (min-width: 769px) {
  .chatbot.expanded .message-content .msg-file-chips {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
  }

  .chatbot.expanded .message-content .msg-file-chip {
    max-width: 320px;
    width: fit-content;
    box-sizing: border-box;
  }

  .chatbot.expanded .msg-chip-name {
    max-width: 200px;
  }
}

@media (max-width: 768px) {
    .msg-file-chip {
        max-width: 240px;
        padding: 6px 10px;
        gap: 8px;
    }

    .msg-chip-thumb-wrap,
    .msg-chip-icon {
        width: 34px;
        height: 34px;
    }

    .msg-chip-name {
        font-size: 0.75rem;
        max-width: 130px;
    }
}

@media (max-width: 480px) {
    .msg-file-chip {
        max-width: 200px;
        padding: 5px 8px;
        gap: 6px;
    }

    .msg-chip-thumb-wrap,
    .msg-chip-icon {
        width: 30px;
        height: 30px;
    }

    .msg-chip-name {
        font-size: 0.7rem;
        max-width: 110px;
    }
}

/* ============================================================
   IMAGE LIGHTBOX OVERLAY
   ============================================================ */
.chat-lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-lightbox);
    background: var(--color-lightbox-overlay);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-medium) ease, visibility var(--duration-medium) ease;
    cursor: pointer;
}

.chat-lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.chat-lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 42px;
    height: 42px;
    border: 1px solid var(--color-lightbox-close-border);
    border-radius: 50%;
    background: var(--color-lightbox-close-bg);
    color: var(--color-lightbox-close-color);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-base);
    z-index: 1;
}

.chat-lightbox-close:hover {
    background: var(--color-close-btn-hover-bg);
    color: var(--color-close-btn-hover-text);
    transform: rotate(90deg);
}

.chat-lightbox-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    cursor: default;
    animation: lightboxBodyIn var(--duration-bounce) var(--ease-out);
    max-width: min(90vw, 960px);
    max-height: 90vh;
}

@keyframes lightboxBodyIn {
    from { opacity: 0; transform: scale(0.90) translateY(16px); }
    to   { opacity: 1; transform: scale(1)   translateY(0);    }
}

.chat-lightbox-img {
    display: block;
    max-width: 100%;
    max-height: 78vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 24px 64px var(--color-lightbox-shadow);
    user-select: none;
}

.chat-lightbox-caption {
    font-size: 0.82rem;
    color: var(--color-lightbox-caption);
    text-align: center;
    max-width: 420px;
    line-height: 1.45;
    font-family: var(--font-primary);
}

@media (prefers-reduced-motion: reduce) {
    .chat-lightbox-overlay { transition: none; }
    .chat-lightbox-body    { animation: none; }
}

/* ============================================================
   INLINE-EDIT FILE PREVIEW STRIP
   ============================================================ */
.inline-edit-files {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
    background: var(--color-inline-edit-bg);
    border: 1px solid var(--color-inline-edit-border);
    border-radius: 12px;
    margin-bottom: 12px;
    width: 100%;
    box-sizing: border-box;
}

.inline-edit-files-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-light);
    font-family: var(--font-primary);
}

.inline-edit-files-label i {
    color: var(--color-accent);
    font-size: 0.75rem;
}

.inline-edit-files-chips {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.inline-edit-files .msg-file-chip {
    padding: 6px 10px;
    max-width: 240px;
}

.inline-edit-files .msg-chip-thumb-wrap,
.inline-edit-files .msg-chip-icon {
    width: 32px;
    height: 32px;
}

.inline-edit-files .msg-chip-name {
    font-size: 0.75rem;
    max-width: 140px;
}

.inline-edit-files .msg-file-chip {
    background: var(--color-inline-edit-files-chip-bg);
    border-color: var(--color-accent-border);
}