/**
 * Light Theme for AI Chat Application
 * Default light color scheme with professional appearance
 */

[data-theme="light"], :root {
  /* Primary Colors */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: rgba(37, 99, 235, 0.1);
  --color-primary-dark: #1e40af;
  
  /* Secondary Colors */
  --color-secondary: #6b7280;
  --color-secondary-hover: #4b5563;
  --color-secondary-light: rgba(107, 114, 128, 0.1);
  
  /* Background Colors */
  --color-background: #ffffff;
  --color-background-secondary: #f9fafb;
  --color-background-tertiary: #f3f4f6;
  --color-background-overlay: rgba(255, 255, 255, 0.95);
  
  /* Surface Colors */
  --color-surface: #ffffff;
  --color-surface-hover: #f9fafb;
  --color-surface-secondary: #f3f4f6;
  --color-surface-elevated: #ffffff;
  
  /* Text Colors */
  --color-text-primary: #111827;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-text-inverse: #ffffff;
  --color-text-muted: #d1d5db;
  
  /* Border Colors */
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-border-focus: #2563eb;
  --color-border-hover: #d1d5db;
  
  /* Status Colors */
  --color-error: #ef4444;
  --color-error-light: rgba(239, 68, 68, 0.1);
  --color-error-dark: #dc2626;
  
  --color-warning: #f59e0b;
  --color-warning-light: rgba(245, 158, 11, 0.1);
  --color-warning-dark: #d97706;
  
  --color-success: #10b981;
  --color-success-light: rgba(16, 185, 129, 0.1);
  --color-success-dark: #059669;
  
  --color-info: #3b82f6;
  --color-info-light: rgba(59, 130, 246, 0.1);
  --color-info-dark: #2563eb;
  
  /* Code and Syntax Highlighting */
  --code-background: #f6f8fa;
  --code-border: #e1e4e8;
  --code-text: #24292e;
  --code-keyword: #d73a49;
  --code-string: #032f62;
  --code-comment: #6a737d;
  --code-number: #005cc5;
  --code-function: #6f42c1;
  --code-variable: #e36209;
  
  /* Message Specific Colors */
  --message-user-bg: rgba(37, 99, 235, 0.05);
  --message-user-border: rgba(37, 99, 235, 0.2);
  --message-ai-bg: #ffffff;
  --message-ai-border: #e5e7eb;
  
  /* Input Colors */
  --input-background: #ffffff;
  --input-border: #e5e7eb;
  --input-border-focus: #2563eb;
  --input-placeholder: #9ca3af;
  
  /* Scrollbar Colors */
  --scrollbar-track: transparent;
  --scrollbar-thumb: #e5e7eb;
  --scrollbar-thumb-hover: #d1d5db;
  
  /* Shadow Colors */
  --shadow-color: rgba(0, 0, 0, 0.1);
  --shadow-color-light: rgba(0, 0, 0, 0.05);
  --shadow-color-heavy: rgba(0, 0, 0, 0.15);
  
  /* Highlight Colors */
  --highlight-background: #fef3c7;
  --highlight-border: #f59e0b;
  --selection-background: rgba(37, 99, 235, 0.2);
  
  /* Loading Animation Colors */
  --loading-primary: #2563eb;
  --loading-secondary: #e5e7eb;
  
  /* Toast Colors */
  --toast-background: #ffffff;
  --toast-border: #e5e7eb;
  --toast-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Modal Colors */
  --modal-background: #ffffff;
  --modal-overlay: rgba(0, 0, 0, 0.5);
  --modal-border: #e5e7eb;
  
  /* Button Variants */
  --button-primary-bg: #2563eb;
  --button-primary-hover: #1d4ed8;
  --button-primary-text: #ffffff;
  
  --button-secondary-bg: transparent;
  --button-secondary-hover: #f9fafb;
  --button-secondary-text: #6b7280;
  --button-secondary-border: #e5e7eb;
  
  --button-danger-bg: #ef4444;
  --button-danger-hover: #dc2626;
  --button-danger-text: #ffffff;
  
  /* File Upload Colors */
  --upload-border: #e5e7eb;
  --upload-border-active: #2563eb;
  --upload-background: #f9fafb;
  --upload-background-hover: #f3f4f6;
  --upload-text: #6b7280;
  
  /* Progress Bar Colors */
  --progress-background: #e5e7eb;
  --progress-fill: #2563eb;
  --progress-text: #6b7280;
  
  /* Conversation List Colors */
  --conversation-hover: #f9fafb;
  --conversation-active: rgba(37, 99, 235, 0.1);
  --conversation-border-active: #2563eb;
  
  /* Search Colors */
  --search-background: #ffffff;
  --search-border: #e5e7eb;
  --search-border-focus: #2563eb;
  --search-placeholder: #9ca3af;
  
  /* Welcome Message Colors */
  --welcome-icon-bg: rgba(16, 163, 127, 0.1);
  --welcome-icon-color: #2563eb;
  --welcome-text: #111827;
  
  /* Suggested Prompt Colors */
  --prompt-background: #ffffff;
  --prompt-border: #e5e7eb;
  --prompt-hover-bg: #f9fafb;
  --prompt-hover-border: #2563eb;
  --prompt-text: #111827;
  
  /* Message Action Colors */
  --action-button-hover: #f9fafb;
  --action-button-text: #6b7280;
  --action-button-text-hover: #111827;
  
  /* Markdown Colors */
  --markdown-heading: #111827;
  --markdown-text: #374151;
  --markdown-link: #2563eb;
  --markdown-link-hover: #1d4ed8;
  --markdown-blockquote: #6b7280;
  --markdown-blockquote-border: #e5e7eb;
  --markdown-table-border: #e5e7eb;
  --markdown-table-header: #f9fafb;
}

/* Light theme specific overrides */
[data-theme="light"] .highlight-js {
  background: #f6f8fa !important;
  color: #24292e !important;
}

[data-theme="light"] .hljs-keyword {
  color: #d73a49 !important;
}

[data-theme="light"] .hljs-string {
  color: #032f62 !important;
}

[data-theme="light"] .hljs-comment {
  color: #6a737d !important;
}

[data-theme="light"] .hljs-number {
  color: #005cc5 !important;
}

[data-theme="light"] .hljs-function {
  color: #6f42c1 !important;
}

[data-theme="light"] .hljs-variable {
  color: #e36209 !important;
}

/* Light theme message styling */
[data-theme="light"] .message.user .message-body {
  background-color: transparent;
  border: none;
}

[data-theme="light"] .message.ai .message-body {
  background-color: var(--message-ai-bg);
  border-color: var(--message-ai-border);
}

/* Light theme code block styling */
[data-theme="light"] .code-block {
  background-color: var(--code-background);
  border-color: var(--code-border);
  color: var(--code-text);
}

/* Light theme input styling */
[data-theme="light"] .input-wrapper {
  background-color: var(--input-background);
  border-color: var(--input-border);
}

/* [data-theme="light"] .input-wrapper:focus-within - 已移除焦点状态下的边框高亮效果 */

[data-theme="light"] .message-input::placeholder {
  color: var(--input-placeholder);
}

/* Light theme toast styling */
[data-theme="light"] .toast {
  background-color: var(--toast-background);
  border-color: var(--toast-border);
  box-shadow: var(--toast-shadow);
}

/* Light theme modal styling */
[data-theme="light"] .modal-content {
  background-color: var(--modal-background);
  border-color: var(--modal-border);
}

[data-theme="light"] .modal::before {
  background-color: var(--modal-overlay);
}

/* Light theme button styling */
[data-theme="light"] .btn-primary {
  background-color: var(--button-primary-bg);
  color: var(--button-primary-text);
}

[data-theme="light"] .btn-primary:hover {
  background-color: var(--button-primary-hover);
}

[data-theme="light"] .btn-secondary {
  background-color: var(--button-secondary-bg);
  color: var(--button-secondary-text);
  border-color: var(--button-secondary-border);
}

[data-theme="light"] .btn-secondary:hover {
  background-color: var(--button-secondary-hover);
}

[data-theme="light"] .btn-danger {
  background-color: var(--button-danger-bg);
  color: var(--button-danger-text);
}

[data-theme="light"] .btn-danger:hover {
  background-color: var(--button-danger-hover);
}

/* Light theme file upload styling */
[data-theme="light"] .file-upload-area {
  border-color: var(--upload-border);
  background-color: var(--upload-background);
}

[data-theme="light"] .file-upload-area.drag-over {
  border-color: var(--upload-border-active);
  background-color: var(--upload-background-hover);
}

/* Light theme progress bar styling */
[data-theme="light"] .progress-bar {
  background-color: var(--progress-background);
}

[data-theme="light"] .progress-fill {
  background-color: var(--progress-fill);
}

[data-theme="light"] .progress-text {
  color: var(--progress-text);
}

/* Light theme conversation styling */
[data-theme="light"] .conversation-item:hover {
  background-color: var(--conversation-hover);
}

[data-theme="light"] .conversation-item.active {
  background-color: var(--conversation-active);
  border-left-color: var(--conversation-border-active);
}

/* Light theme search styling */
[data-theme="light"] .search-input {
  background-color: var(--search-background);
  border-color: var(--search-border);
}

[data-theme="light"] .search-input:focus {
  border-color: var(--search-border-focus);
}

[data-theme="light"] .search-input::placeholder {
  color: var(--search-placeholder);
}

/* Light theme welcome message styling */
[data-theme="light"] .welcome-icon {
  background-color: var(--welcome-icon-bg);
  color: var(--welcome-icon-color);
}

[data-theme="light"] .welcome-message h2 {
  color: var(--welcome-text);
}

/* Light theme suggested prompt styling */
[data-theme="light"] .suggested-prompt {
  background-color: var(--prompt-background);
  border-color: var(--prompt-border);
}

[data-theme="light"] .suggested-prompt:hover {
  background-color: var(--prompt-hover-bg);
  border-color: var(--prompt-hover-border);
}

[data-theme="light"] .suggested-prompt-text {
  color: var(--prompt-text);
}

/* Light theme message action styling */
[data-theme="light"] .message-action-btn:hover {
  background-color: var(--action-button-hover);
  color: var(--action-button-text-hover);
}

[data-theme="light"] .message-action-btn {
  color: var(--action-button-text);
}