/**
 * FitMate - AI Chat Page Styles
 * 与 Landing Page 保持一致的 Design Language
 */

/* 提供资料按钮 */
.profile-btn {
  background: linear-gradient(135deg, #3B82F6, #2563EB) !important;
  color: white !important;
  padding: 4px 12px !important;
  border-radius: 20px !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  transition: all 0.2s ease !important;
  border: none !important;
  white-space: nowrap !important;
}
.profile-btn:hover {
  transform: scale(1.05) !important;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4) !important;
}
.profile-btn:active {
  transform: scale(0.95) !important;
}

/* ========================================
   Page Layout
   ======================================== */
.chat-page {
    height: 100vh;
    overflow: hidden;
    background: var(--background);
}

.chat-page .app-container {
    display: flex;
    height: 100vh;
}

/* ========================================
   Sidebar - 280px
   ======================================== */
.chat-sidebar {
    width: 280px;
    flex-shrink: 0;
    flex-basis: 280px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    position: relative;
}

.chat-sidebar .sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

/* New Chat Button */
.sidebar-new-chat {
    padding: var(--spacing-md) var(--spacing-lg);
}

.btn-new-chat {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-new-chat:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* Search */
.sidebar-search {
    padding: 0 var(--spacing-lg) var(--spacing-md);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper i {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    font-size: 14px;
}

.search-input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* History */
.sidebar-history {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md) var(--spacing-lg);
}

.history-group {
    margin-bottom: var(--spacing-lg);
}

.history-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.history-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.history-item i {
    font-size: 14px;
    flex-shrink: 0;
}

.history-item span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item:hover {
    background: var(--background);
    color: var(--text-primary);
}

.history-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

/* Sidebar Footer */
.chat-sidebar .sidebar-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.chat-sidebar .user-info {
    padding: var(--spacing-sm);
}

/* ========================================
   Main Chat Area
   ======================================== */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    margin-left: 0;
    min-height: 0;
    height: 100%;
}

/* ========================================
   Chat Header
   ======================================== */
.chat-header {
    position: static;
    height: 64px;
    padding: 0 var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface);
    flex-shrink: 0;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.chat-title h1 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--success);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
}

.header-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.header-btn:hover {
    background: var(--background);
    color: var(--text-primary);
}

/* ========================================
   Chat Content
   ======================================== */
.chat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

/* ========================================
   Welcome Area
   ======================================== */
.chat-welcome {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    animation: fadeIn 0.3s ease;
}

.chat-welcome.hidden {
    display: none;
}
}

.welcome-icon {
    margin-bottom: var(--spacing-xl);
}

.welcome-user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    font-size: 20px;
    margin: 0 auto 16px;
}

.welcome-user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-avatar-large {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: white;
}

.welcome-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.welcome-title .user-name {
    color: var(--primary);
    font-size: inherit;
}

.welcome-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

/* Quick Suggestions */
.quick-suggestions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 600px;
    width: 100%;
}

.suggestion-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    animation: fadeInUp 0.4s ease backwards;
}

.suggestion-card:nth-child(1) { animation-delay: 0.1s; }
.suggestion-card:nth-child(2) { animation-delay: 0.15s; }
.suggestion-card:nth-child(3) { animation-delay: 0.2s; }
.suggestion-card:nth-child(4) { animation-delay: 0.25s; }

.suggestion-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-level2);
    border-color: var(--primary-light);
}

.suggestion-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.suggestion-card span {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: left;
}

/* ========================================
   Messages Container
   ======================================== */
.messages-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    min-height: 0;
}

/* ========================================
   Message Bubble - User
   ======================================== */
.message-user {
    display: flex;
    justify-content: flex-end;
    align-items: flex-end;
    gap: 8px;
    animation: slideInRight 0.35s ease;
}

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

.message-user .message-bubble {
    max-width: 70%;
    background: var(--gradient-primary);
    color: white;
    padding: 8px 14px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
}

/* ========================================
   Message Bubble - AI
   ======================================== */
.message-ai {
    display: flex;
    gap: var(--spacing-md);
    animation: fadeInLeft 0.35s ease;
}

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

.message-ai .ai-avatar {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    flex-shrink: 0;
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message-bubble {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 18px 18px 18px 4px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
    word-break: break-word;
    max-width: 70%;
}

/* Markdown Content in AI Message */
.message-bubble h1,
.message-bubble h2,
.message-bubble h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.message-bubble h1 { font-size: 20px; }
.message-bubble h2 { font-size: 18px; }
.message-bubble h3 { font-size: 16px; }

.message-bubble p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.message-bubble ul,
.message-bubble ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-bubble li {
    margin-bottom: var(--spacing-xs);
}

.message-bubble strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-bubble em {
    font-style: italic;
    color: var(--text-secondary);
}

.message-bubble blockquote {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border-left: 3px solid var(--primary);
    background: var(--background);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
}

.message-bubble code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
    background: #1E293B;
    color: #E2E8F0;
    padding: 2px 6px;
    border-radius: 4px;
}

.message-bubble pre {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-md);
    background: #1E293B;
    border-radius: var(--radius-md);
    overflow-x: auto;
}

.message-bubble pre code {
    background: none;
    padding: 0;
    color: #E2E8F0;
}

.message-bubble a {
    color: var(--primary);
    text-decoration: none;
}

.message-bubble a:hover {
    text-decoration: underline;
}

.message-bubble table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-sm) 0;
    font-size: 13px;
}

.message-bubble th,
.message-bubble td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border);
    text-align: left;
}

.message-bubble th {
    background: var(--background);
    font-weight: 600;
}

/* ========================================
   Thinking Indicator
   ======================================== */
.message-thinking {
    display: flex;
    gap: var(--spacing-md);
}

.thinking-dots {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px 18px 18px 4px;
}

.thinking-dots span {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: thinkingBounce 1.4s ease-in-out infinite;
}

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

@keyframes thinkingBounce {
    0%, 80%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    40% {
        transform: translateY(-6px);
        opacity: 1;
    }
}

/* ========================================
   Message Actions
   ======================================== */
.message-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message-ai:hover .message-actions,
.message-user:hover .message-actions {
    opacity: 1;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

/* ========================================
   Suggestion Card (after AI response)
   ======================================== */
.suggestion-result-card {
    margin-top: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--primary-light);
    border-radius: var(--radius-lg);
    animation: fadeInUp 0.3s ease;
}

.suggestion-result-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.suggestion-result-card .result-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.suggestion-result-card .meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.suggestion-result-card .meta-label {
    font-size: 12px;
    color: var(--text-muted);
}

.suggestion-result-card .meta-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.suggestion-result-card .btn-generate {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.suggestion-result-card .btn-generate:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* ========================================
   Chat Input Area
   ======================================== */
.chat-input-area {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
    background: var(--surface);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    max-width: 800px;
    margin: 0 auto;
}

.input-container {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition-fast);
}

.input-container:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.chat-input {
    flex: 1;
    border: none;
    background: none;
    resize: none;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    max-height: 120px;
    outline: none;
}

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

.input-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.input-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.input-btn:hover {
    background: var(--border-light);
    color: var(--text-secondary);
}

.send-btn {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.send-btn:active {
    transform: scale(0.98);
}

.input-hint {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 992px) {
    .chat-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

    .chat-sidebar.mobile-open {
        transform: translateX(0);
    }

    .quick-suggestions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .messages-container {
        padding: var(--spacing-md);
    }

    .message-user .message-bubble,
    .message-ai .message-bubble {
        max-width: 85%;
    }

    .welcome-title {
        font-size: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}