/* ============================
   VozAI Desktop - Premium Styles
   ============================ */

:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-glass: rgba(18, 18, 26, 0.85);
  --bg-glass-light: rgba(255, 255, 255, 0.03);
  
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-secondary: #22d3ee;
  --color-accent: #f472b6;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --font-primary: 'Outfit', sans-serif;
  --font-secondary: 'Plus Jakarta Sans', sans-serif;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
  position: relative;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* ============================
   CHAT COLUMN
   ============================ */
.chat-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: relative;
  background: var(--bg-primary);
  border-right: 1px solid var(--border-color);
}

/* Chat Header */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  min-height: 64px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.8; }
}

.logo-wrapper h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 20px;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-indicator-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color);
  border-radius: 20px;
}

.status-pulse {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: status-glow 2s infinite;
}

@keyframes status-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

.status-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-preview-panel-btn,
.settings-toggle-btn,
.history-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.toggle-preview-panel-btn {
  width: auto;
  padding: 0 14px;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font-primary);
}

.toggle-preview-panel-btn:hover,
.settings-toggle-btn:hover,
.history-toggle-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.model-badge {
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(34, 211, 238, 0.2));
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-light);
  letter-spacing: 0.3px;
}

/* Settings & History Popovers */
.settings-popover,
.history-popover {
  position: absolute;
  top: 80px;
  right: 20px;
  width: 320px;
  max-height: 400px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  overflow-y: auto;
  animation: popover-in 0.25s ease;
}

@keyframes popover-in {
  from {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.settings-popover-header,
.history-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.settings-popover-header h3,
.history-popover-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.new-chat-btn {
  padding: 8px 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.new-chat-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.voice-controls {
  padding: 16px 20px;
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.control-row:last-child {
  margin-bottom: 0;
}

.control-row label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.control-row select {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.control-row select:hover,
.control-row select:focus {
  border-color: var(--color-primary);
  outline: none;
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch .slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 26px;
  transition: all var(--transition-normal);
}

.toggle-switch .slider::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: all var(--transition-normal);
}

.toggle-switch input:checked + .slider {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.toggle-switch input:checked + .slider::before {
  transform: translateX(22px);
  background: white;
}

.history-list {
  padding: 12px;
  max-height: 300px;
  overflow-y: auto;
}

/* ============================
   CHAT MESSAGES
   ============================ */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.message {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  animation: message-in 0.3s ease;
}

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

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

.avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.message.user .avatar {
  background: linear-gradient(135deg, var(--color-accent), var(--color-warning));
}

.message-content {
  max-width: 70%;
  padding: 14px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  border-top-left-radius: 4px;
}

.message.user .message-content {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-lg);
  border-top-right-radius: 4px;
}

.message-content p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.message-content strong {
  color: var(--color-secondary);
  font-weight: 600;
}

.message.user .message-content strong {
  color: white;
}

/* ============================
   FILES PREVIEW CONTAINER (NEW!)
   ============================ */
.files-preview-container {
  padding: 12px 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  animation: slide-up 0.3s ease;
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.files-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.files-count {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.15);
  padding: 4px 12px;
  border-radius: 20px;
}

.clear-all-files-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-error);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.clear-all-files-btn:hover {
  background: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.files-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-height: 120px;
  overflow-y: auto;
  padding-right: 4px;
}

.files-list::-webkit-scrollbar {
  width: 4px;
}

.files-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  min-width: 160px;
  max-width: 220px;
  animation: file-in 0.2s ease;
}

@keyframes file-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.file-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.file-icon svg {
  width: 18px;
  height: 18px;
  color: white;
}

.file-icon.image {
  background: linear-gradient(135deg, #f472b6, #fb923c);
}

.file-icon.video {
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
}

.file-icon.audio {
  background: linear-gradient(135deg, #10b981, #22d3ee);
}

.file-icon.document {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
}

.file-icon.code {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.file-info {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.file-remove-btn {
  width: 24px;
  height: 24px;
  background: rgba(239, 68, 68, 0.2);
  border: none;
  border-radius: 50%;
  color: var(--color-error);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.file-remove-btn:hover {
  background: var(--color-error);
  color: white;
  transform: scale(1.1);
}

/* ============================
   INPUT FORM
   ============================ */
.input-form {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
}

.upload-file-btn,
.mic-btn-input {
  width: 48px;
  height: 48px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  position: relative;
  flex-shrink: 0;
}

.upload-file-btn:hover,
.mic-btn-input:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.mic-btn-input.recording {
  background: var(--color-error);
  border-color: var(--color-error);
  color: white;
  animation: recording-pulse 1s infinite;
}

@keyframes recording-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.upload-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--color-primary);
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

#text-input {
  flex: 1;
  height: 48px;
  padding: 0 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-primary);
  transition: all var(--transition-normal);
}

#text-input::placeholder {
  color: var(--text-muted);
}

#text-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.send-btn {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-md);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  flex-shrink: 0;
}

.send-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.send-btn:active {
  transform: translateY(0);
}

/* ============================
   PREVIEW COLUMN
   ============================ */
.preview-column {
  width: 50%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  animation: preview-in 0.3s ease;
}

@keyframes preview-in {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.preview-title-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-dot {
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--color-success), var(--color-secondary));
  border-radius: 50%;
}

.preview-title-wrapper h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.close-preview-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-glass-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.close-preview-btn:hover {
  background: var(--color-error);
  border-color: var(--color-error);
  color: white;
}

.preview-tabs {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.preview-tab-buttons-group {
  display: flex;
  gap: 8px;
}

.preview-tab-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.preview-tab-btn:hover {
  background: var(--bg-glass-light);
  color: var(--text-primary);
}

.preview-tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.download-zip-btn {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--color-success), #059669);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.download-zip-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.preview-content-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.preview-tab-content {
  display: none;
  height: 100%;
  flex-direction: column;
}

.preview-tab-content.active {
  display: flex;
}

.iframe-controls {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

.iframe-control-btn {
  display: flex;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.iframe-control-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

#preview-iframe {
  flex: 1;
  width: 100%;
  border: none;
  background: white;
}

.code-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

.code-view-header span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

.copy-code-btn {
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-primary);
}

.copy-code-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.code-editor-container {
  flex: 1;
  display: flex;
  overflow: auto;
  background: var(--bg-primary);
}

.line-numbers {
  padding: 16px 12px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: 'Monaco', 'Menlo', monospace;
  text-align: right;
  user-select: none;
  min-width: 50px;
}

.code-editor-container pre {
  flex: 1;
  margin: 0;
  padding: 16px;
  overflow-x: auto;
}

.code-editor-container code {
  font-size: 0.8rem;
  font-family: 'Monaco', 'Menlo', monospace;
  color: var(--text-primary);
  white-space: pre;
}

/* ============================
   DRAG AND DROP OVERLAY
   ============================ */
.drag-drop-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: overlay-in 0.2s ease;
}

@keyframes overlay-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.drag-drop-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 80px;
  background: var(--bg-glass);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-xl);
  text-align: center;
  animation: box-in 0.3s ease;
}

@keyframes box-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.drag-drop-box h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.drag-drop-box p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.drag-drop-box p strong {
  color: var(--color-primary-light);
}

.drag-drop-limit {
  padding: 8px 20px;
  background: rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

/* ============================
   RESPONSIVE / MOBILE
   ============================ */
@media (max-width: 768px) {
  .chat-header {
    padding: 12px 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  
  .status-indicator-header {
    order: 3;
    width: 100%;
    justify-content: center;
  }
  
  .header-actions {
    gap: 6px;
  }
  
  .toggle-preview-panel-btn span {
    display: none;
  }
  
  .toggle-preview-panel-btn {
    width: 40px;
    padding: 0;
  }
  
  .model-badge {
    display: none;
  }
  
  .chat-messages {
    padding: 16px;
  }
  
  .message-content {
    max-width: 85%;
  }
  
  .input-form {
    padding: 12px 16px;
    gap: 8px;
  }
  
  .upload-file-btn,
  .mic-btn-input,
  .send-btn {
    width: 44px;
    height: 44px;
  }
  
  #text-input {
    height: 44px;
    font-size: 1rem;
  }
  
  .preview-column {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    height: 100vh;
    z-index: 1000;
  }
  
  .settings-popover,
  .history-popover {
    width: calc(100% - 40px);
    right: 20px;
  }
  
  .file-item {
    min-width: 140px;
    max-width: 180px;
  }
}

/* Scrollbar global */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}