/**
 * KnowPress 聊天界面样式
 * 提供现代化的视觉设计
 */

/* CSS变量定义 */
:root {
    /* 主色调 */
    --knowpress-primary: #2563eb;
    --knowpress-primary-hover: #1d4ed8;
    --knowpress-primary-light: #dbeafe;
    --knowpress-primary-dark: #1e40af;
    
    /* 流式效果颜色 */
    --knowpress-streaming-cursor: #2563eb;
    --knowpress-typing-bg: #f8fafc;
    
    /* 辅助色 */
    --knowpress-secondary: #64748b;
    --knowpress-success: #059669;
    --knowpress-warning: #d97706;
    --knowpress-error: #dc2626;
    --knowpress-info: #0891b2;
    
    /* 中性色 */
    --knowpress-gray-50: #f8fafc;
    --knowpress-gray-100: #f1f5f9;
    --knowpress-gray-200: #e2e8f0;
    --knowpress-gray-300: #cbd5e1;
    --knowpress-gray-400: #94a3b8;
    --knowpress-gray-500: #64748b;
    --knowpress-gray-600: #475569;
    --knowpress-gray-700: #334155;
    --knowpress-gray-800: #1e293b;
    --knowpress-gray-900: #0f172a;
    
    /* 字体 */
    --knowpress-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --knowpress-font-size-xs: 0.75rem;
    --knowpress-font-size-sm: 0.875rem;
    --knowpress-font-size-base: 1rem;
    --knowpress-font-size-lg: 1.125rem;
    --knowpress-font-size-xl: 1.25rem;
    
    /* 间距 */
    --knowpress-spacing-xs: 0.25rem;
    --knowpress-spacing-sm: 0.5rem;
    --knowpress-spacing-md: 1rem;
    --knowpress-spacing-lg: 1.5rem;
    --knowpress-spacing-xl: 2rem;
    
    /* 圆角 */
    --knowpress-radius-sm: 0.375rem;
    --knowpress-radius-md: 0.5rem;
    --knowpress-radius-lg: 0.75rem;
    --knowpress-radius-xl: 1rem;
    
    /* 阴影 */
    --knowpress-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --knowpress-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --knowpress-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --knowpress-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 动画 */
    --knowpress-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --knowpress-transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 主容器 */
.knowpress-widget,
.knowpress-chat-widget {
    position: fixed;
    z-index: 999999;
    font-family: var(--knowpress-font-family);
    font-size: var(--knowpress-font-size-base);
    line-height: 1.5;
}

/* 位置样式 */
.knowpress-position-bottom-right {
    bottom: 20px;
    right: 20px;
}

.knowpress-position-bottom-left {
    bottom: 20px;
    left: 20px;
}

.knowpress-position-top-right {
    top: 20px;
    right: 20px;
}

.knowpress-position-top-left {
    top: 20px;
    left: 20px;
}

/* 聊天触发按钮 */
.knowpress-chat-trigger,
.knowpress-chat-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: var(--knowpress-primary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--knowpress-shadow-lg);
    transition: var(--knowpress-transition);
    border: none;
    outline: none;
    color: white;
    z-index: 999999;
}

.knowpress-chat-trigger:hover,
.knowpress-chat-button:hover {
    background: var(--knowpress-primary-hover);
    transform: scale(1.05);
    box-shadow: var(--knowpress-shadow-xl);
}

.knowpress-chat-trigger:active,
.knowpress-chat-button:active {
    transform: scale(0.95);
}

.knowpress-icon {
    width: 24px;
    height: 24px;
    fill: white;
    transition: var(--knowpress-transition);
}

.knowpress-chat-trigger:hover .knowpress-icon,
.knowpress-chat-button:hover .knowpress-icon {
    transform: rotate(5deg);
}

/* 聊天窗口 */
.knowpress-chat-window {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 380px;
    height: 600px;
    background: white;
    border-radius: var(--knowpress-radius-md);
    box-shadow: var(--knowpress-shadow-xl);
    border: 1px solid var(--knowpress-gray-200);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.knowpress-chat-window.show {
    display: flex;
}

/* 聊天头部 */
.knowpress-chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--knowpress-spacing-md);
    background: var(--knowpress-gray-50);
    border-bottom: 1px solid var(--knowpress-gray-200);
}

.knowpress-chat-title {
    display: flex;
    align-items: center;
    gap: var(--knowpress-spacing-sm);
    font-weight: 600;
    color: var(--knowpress-gray-900);
}

.knowpress-chat-avatar {
    font-size: 20px;
}

.knowpress-chat-name {
    font-size: var(--knowpress-font-size-base);
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.knowpress-chat-controls {
    display: flex;
    gap: var(--knowpress-spacing-xs);
}

.knowpress-control-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--knowpress-gray-600);
    font-size: 16px;
    line-height: 1;
}

.knowpress-control-btn:hover {
    background: var(--knowpress-gray-200);
    color: var(--knowpress-gray-900);
}

/* 聊天消息区域 */
.knowpress-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--knowpress-spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--knowpress-spacing-md);
}

/* 聊天输入区域 */
.knowpress-chat-input-area {
    padding: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    background: white;
    border-radius: 0 0 16px 16px;
    position: relative;
}

.knowpress-chat-input-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

.knowpress-chat-input-container {
    display: flex;
    gap: var(--knowpress-spacing-sm);
    align-items: flex-end;
}

.knowpress-chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    font-size: 14px;
    resize: none;
    outline: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--knowpress-font-family);
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(10px);
}

.knowpress-chat-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    background: white;
}

.knowpress-send-button {
    width: 40px;
    height: 40px;
    border: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.knowpress-send-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.knowpress-send-button:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.knowpress-send-button:disabled {
    background: var(--knowpress-gray-300);
    cursor: not-allowed;
    transform: none;
}

/* 消息样式 - 超紧凑版 */
.knowpress-message {
    display: flex;
    gap: 6px;
    width: 100%;
    max-width: none;
    margin: 2px 0;
}

.knowpress-message-bot {
    align-self: flex-start;
}

.knowpress-message-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.knowpress-message-content {
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.4;
    word-wrap: break-word;
    width: 100%;
    max-width: none;
    box-sizing: border-box;
}

.knowpress-message-bot .knowpress-message-content {
    background: var(--knowpress-gray-100);
    color: var(--knowpress-gray-900);
}

.knowpress-message-user .knowpress-message-content {
    background: var(--knowpress-primary);
    color: white;
}

/* 未读消息徽章 */
.knowpress-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--knowpress-error);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--knowpress-font-size-xs);
    font-weight: 600;
    animation: knowpress-badge-pulse 2s infinite;
}

@keyframes knowpress-badge-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* 聊天容器 */
.knowpress-chat-container,
.knowpress-chat-window {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 360px;
    height: 500px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15), 0 8px 25px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: knowpress-slide-up 0.3s ease-out;
    border: 1px solid rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    /* 窗口控制相关样式 */
    resize: both;
    min-width: 280px;
    min-height: 180px;
    max-width: 85vw;
    max-height: 85vh;
    /* 现代化设计 */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes knowpress-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.knowpress-chat-container.knowpress-opening {
    animation: knowpress-slide-up 0.3s ease-out;
}

.knowpress-chat-container.knowpress-minimized {
    height: 60px;
    overflow: hidden;
}

/* 聊天头部 */
.knowpress-chat-header {
    background: linear-gradient(90deg, #4c1d95 0%, #7c3aed 50%, #a855f7 100%);
    color: white;
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    min-height: 32px;
    border-radius: 16px 16px 0 0;
    /* 窗口拖拽相关样式 */
    cursor: move;
    user-select: none;
    /* 现代化效果 */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.knowpress-chat-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.knowpress-header-info h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: white;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.knowpress-status {
    font-size: var(--knowpress-font-size-sm);
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: var(--knowpress-spacing-xs);
}

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

.knowpress-current-model {
    font-size: var(--knowpress-font-size-xs);
    color: var(--knowpress-gray-400);
    margin-top: var(--knowpress-spacing-xs);
    font-style: italic;
}

@keyframes knowpress-status-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* 这个样式定义已被下面的更具体样式覆盖 */

.knowpress-header-actions button svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* 消息容器 */
.knowpress-chat-messages {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
}

.knowpress-chat-messages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

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

.knowpress-chat-messages::-webkit-scrollbar-track {
    background: var(--knowpress-gray-100);
    border-radius: var(--knowpress-radius-sm);
}

.knowpress-chat-messages::-webkit-scrollbar-thumb {
    background: var(--knowpress-gray-300);
    border-radius: var(--knowpress-radius-sm);
}

.knowpress-chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--knowpress-gray-400);
}

/* 消息样式 - 超紧凑版 */
.knowpress-message {
    display: flex;
    gap: 6px;
    width: 100%;
    max-width: none;
    margin: 2px 0;
    animation: knowpress-message-fade-in 0.3s ease-out;
}

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

.knowpress-message-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.knowpress-message-assistant {
    align-self: flex-start;
}

.knowpress-message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--knowpress-font-size-sm);
    flex-shrink: 0;
}

.knowpress-message-user .knowpress-message-avatar {
    background: var(--knowpress-primary);
    color: white;
}

.knowpress-message-assistant .knowpress-message-avatar {
    background: var(--knowpress-gray-200);
    color: var(--knowpress-gray-700);
}

.knowpress-message-content {
    padding: var(--knowpress-spacing-sm) var(--knowpress-spacing-md);
    border-radius: var(--knowpress-radius-lg);
    word-wrap: break-word;
    line-height: 1.5;
    position: relative;
}

.knowpress-message-user .knowpress-message-content {
    background: var(--knowpress-primary);
    color: white;
    border-bottom-right-radius: var(--knowpress-radius-sm);
}

.knowpress-message-assistant .knowpress-message-content {
    background: white;
    color: var(--knowpress-gray-900);
    border: 1px solid rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    font-size: 13px;
    line-height: 1.4;
    width: 100%;
    margin: 0;
}

.knowpress-message-error .knowpress-message-content {
    background: var(--knowpress-error);
    color: white;
}

.knowpress-message-time {
    font-size: var(--knowpress-font-size-xs);
    color: var(--knowpress-gray-500);
    margin-top: var(--knowpress-spacing-xs);
    padding: 0 var(--knowpress-spacing-sm);
    text-align: right;
}

.knowpress-message-user .knowpress-message-time {
    text-align: left;
}

/* 模型信息显示 */
.knowpress-message-model {
    font-size: var(--knowpress-font-size-xs);
    color: var(--knowpress-gray-400);
    margin-top: var(--knowpress-spacing-xs);
    padding: 0 var(--knowpress-spacing-sm);
    text-align: right;
    font-style: italic;
    border-top: 1px solid var(--knowpress-gray-200);
    padding-top: var(--knowpress-spacing-xs);
}

.knowpress-message-user .knowpress-message-model {
    text-align: left;
}

/* 流式消息光标 */
.knowpress-streaming-cursor {
    animation: knowpress-cursor-blink 1s infinite;
    color: var(--knowpress-primary);
    font-weight: bold;
}

@keyframes knowpress-cursor-blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* 输入状态指示器 */
.knowpress-typing-indicator {
    padding: var(--knowpress-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--knowpress-spacing-sm);
    animation: knowpress-typing-fade-in 0.3s ease-out;
}

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

.knowpress-typing-dots {
    display: flex;
    gap: 4px;
    padding: var(--knowpress-spacing-sm) var(--knowpress-spacing-md);
    background: white;
    border: 1px solid var(--knowpress-gray-200);
    border-radius: var(--knowpress-radius-lg);
}

.knowpress-typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--knowpress-gray-400);
    border-radius: 50%;
    animation: knowpress-typing-bounce 1.5s infinite;
}

.knowpress-typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.knowpress-typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes knowpress-typing-bounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

.knowpress-typing-text {
    font-size: var(--knowpress-font-size-sm);
    color: var(--knowpress-gray-600);
}

/* 输入区域 */
.knowpress-chat-input {
    padding: var(--knowpress-spacing-md);
    border-top: 1px solid var(--knowpress-gray-200);
    background: white;
    flex-shrink: 0;
}

.knowpress-input-wrapper {
    display: flex;
    gap: var(--knowpress-spacing-sm);
    align-items: flex-end;
}

.knowpress-chat-input textarea {
    flex: 1;
    border: 1px solid var(--knowpress-gray-300);
    border-radius: var(--knowpress-radius-lg);
    padding: var(--knowpress-spacing-sm) var(--knowpress-spacing-md);
    font-family: inherit;
    font-size: var(--knowpress-font-size-base);
    line-height: 1.5;
    resize: none;
    max-height: 120px;
    min-height: 40px;
    transition: var(--knowpress-transition);
    outline: none;
}

.knowpress-chat-input textarea:focus {
    border-color: var(--knowpress-primary);
    box-shadow: 0 0 0 3px var(--knowpress-primary-light);
}

.knowpress-chat-input textarea::placeholder {
    color: var(--knowpress-gray-400);
}

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

.knowpress-input-actions button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--knowpress-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--knowpress-transition);
    outline: none;
}

.knowpress-send {
    background: var(--knowpress-primary);
    color: white;
}

.knowpress-send:hover:not(:disabled) {
    background: var(--knowpress-primary-hover);
    transform: scale(1.05);
}

.knowpress-send:disabled {
    background: var(--knowpress-gray-300);
    cursor: not-allowed;
    transform: none;
}

.knowpress-voice,
.knowpress-attach {
    background: var(--knowpress-gray-100);
    color: var(--knowpress-gray-600);
}

.knowpress-voice:hover,
.knowpress-attach:hover {
    background: var(--knowpress-gray-200);
    color: var(--knowpress-gray-700);
}

.knowpress-input-actions button svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.knowpress-input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--knowpress-spacing-xs);
    font-size: var(--knowpress-font-size-xs);
    color: var(--knowpress-gray-500);
}

.knowpress-char-count {
    font-weight: 500;
}

.knowpress-shortcuts {
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 640px) {
    .knowpress-chat-container {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
        animation: knowpress-mobile-slide-up 0.3s ease-out;
    }
    
    @keyframes knowpress-mobile-slide-up {
        from {
            opacity: 0;
            transform: translateY(100%);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .knowpress-chat-trigger,
    .knowpress-chat-button {
        bottom: 20px;
        right: 20px;
        position: fixed;
    }

    .knowpress-message {
        max-width: 90%;
    }

    /* 移动端聊天窗口位置调整，避免与聊天图标重叠 */
    .knowpress-chat-window {
        top: 10px;
        right: 10px;
        left: 10px;
        width: calc(100vw - 20px);
        height: calc(100vh - 40px);
        max-width: none;
        max-height: none;
    }

    /* 移动端聊天图标与窗口重叠时隐藏图标 */
    .knowpress-chat-window.show ~ .knowpress-chat-trigger,
    .knowpress-chat-window.show ~ .knowpress-chat-button {
        opacity: 0;
        pointer-events: none;
    }
}

/* 深色主题 */
@media (prefers-color-scheme: dark) {
    :root {
        --knowpress-gray-50: #0f172a;
        --knowpress-gray-100: #1e293b;
        --knowpress-gray-200: #334155;
        --knowpress-gray-300: #475569;
        --knowpress-gray-400: #64748b;
        --knowpress-gray-500: #94a3b8;
        --knowpress-gray-600: #cbd5e1;
        --knowpress-gray-700: #e2e8f0;
        --knowpress-gray-800: #f1f5f9;
        --knowpress-gray-900: #f8fafc;
    }
    
    .knowpress-chat-container {
        background: var(--knowpress-gray-100);
        border-color: var(--knowpress-gray-200);
    }
    
    .knowpress-chat-messages {
        background: var(--knowpress-gray-50);
    }
    
    .knowpress-message-assistant .knowpress-message-content {
        background: var(--knowpress-gray-200);
        color: var(--knowpress-gray-800);
        border-color: var(--knowpress-gray-300);
    }
    
    .knowpress-chat-input {
        background: var(--knowpress-gray-100);
        border-color: var(--knowpress-gray-200);
    }
    
    .knowpress-chat-input textarea {
        background: var(--knowpress-gray-200);
        border-color: var(--knowpress-gray-300);
        color: var(--knowpress-gray-800);
    }
    
    .knowpress-chat-input textarea::placeholder {
        color: var(--knowpress-gray-500);
    }
    
    .knowpress-typing-dots {
        background: var(--knowpress-gray-200);
        border-color: var(--knowpress-gray-300);
    }
    
    .knowpress-voice,
    .knowpress-attach {
        background: var(--knowpress-gray-200);
        color: var(--knowpress-gray-600);
    }
    
    .knowpress-voice:hover,
    .knowpress-attach:hover {
        background: var(--knowpress-gray-300);
        color: var(--knowpress-gray-700);
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .knowpress-message-content {
        border: 2px solid currentColor;
    }
    
    .knowpress-chat-input textarea {
        border: 2px solid var(--knowpress-gray-900);
    }
    
    .knowpress-chat-trigger,
    .knowpress-chat-button {
        border: 2px solid white;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    .knowpress-chat-container,
    .knowpress-message,
    .knowpress-chat-trigger,
    .knowpress-chat-button,
    .knowpress-input-actions button,
    .knowpress-typing-dots span,
    .knowpress-streaming-cursor {
        animation: none;
        transition: none;
    }
    
    .knowpress-chat-trigger:hover,
    .knowpress-chat-button:hover {
        transform: none;
    }
    
    .knowpress-send:hover:not(:disabled) {
        transform: none;
    }
}

/* 打印样式 */
@media print {
    .knowpress-widget {
        display: none;
    }
}

/* 无障碍访问 */
.knowpress-widget:focus-within {
    outline: 2px solid var(--knowpress-primary);
    outline-offset: 2px;
}

.knowpress-chat-input textarea:focus,
.knowpress-input-actions button:focus {
    outline: 2px solid var(--knowpress-primary);
    outline-offset: 2px;
}

/* 加载状态 */
.knowpress-loading {
    position: relative;
    overflow: hidden;
}

.knowpress-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: knowpress-loading-shimmer 1.5s infinite;
}

@keyframes knowpress-loading-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ========================================
   消息内容美化样式
   ======================================== */

/* 消息内容基础样式 */
.knowpress-message-content {
    line-height: 1.6;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 段落样式 */
.knowpress-message-content p {
    margin: 0.5em 0;
    line-height: 1.6;
}

.knowpress-message-content p:first-child {
    margin-top: 0;
}

.knowpress-message-content p:last-child {
    margin-bottom: 0;
}

/* 标题样式 */
.knowpress-title {
    font-size: 1.2em;
    font-weight: 600;
    color: var(--knowpress-primary);
    margin: 1em 0 0.5em 0;
    padding-bottom: 0.3em;
    border-bottom: 2px solid var(--knowpress-primary-light);
}

.knowpress-subtitle {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--knowpress-primary-dark);
    margin: 0.8em 0 0.4em 0;
}

/* 列表样式 */
.knowpress-list {
    margin: 0.5em 0;
    padding-left: 1.2em;
}

.knowpress-list-item {
    margin: 0.3em 0;
    line-height: 1.5;
}

/* 符号样式 */
.knowpress-bullet {
    color: var(--knowpress-primary);
    font-weight: bold;
    margin-right: 0.3em;
}

.knowpress-arrow {
    color: var(--knowpress-primary);
    font-weight: bold;
    margin-right: 0.3em;
}

.knowpress-icon {
    margin-right: 0.3em;
}

/* 价格样式 */
.knowpress-price {
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: white;
    padding: 0.2em 0.5em;
    border-radius: 4px;
    font-weight: bold;
    font-size: 1.1em;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    box-shadow: 0 2px 4px rgba(255, 107, 107, 0.3);
}

/* 链接样式 */
.knowpress-link {
    color: var(--knowpress-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--knowpress-primary-light);
    transition: all 0.2s ease;
    word-break: break-all;
}

.knowpress-link:hover {
    background-color: var(--knowpress-primary-light);
    padding: 0.1em 0.3em;
    border-radius: 3px;
    border-bottom: 1px solid var(--knowpress-primary);
}

/* 邮箱样式 */
.knowpress-email {
    color: var(--knowpress-info);
    text-decoration: none;
    border-bottom: 1px solid var(--knowpress-primary-light);
    transition: all 0.2s ease;
}

.knowpress-email:hover {
    background-color: var(--knowpress-primary-light);
    padding: 0.1em 0.3em;
    border-radius: 3px;
    border-bottom: 1px solid var(--knowpress-info);
}

/* 分隔线样式 */
.knowpress-divider {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--knowpress-primary-light), transparent);
    margin: 1em 0;
}

/* 强调文本样式 */
.knowpress-message-content strong {
    color: var(--knowpress-primary-dark);
    font-weight: 600;
}

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

/* 用户状态样式 */
.knowpress-user-status {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
    padding: 8px 12px;
    background: var(--knowpress-gray-50);
    border-radius: 8px;
    border: 1px solid var(--knowpress-gray-200);
}

.knowpress-membership-level {
    font-size: var(--knowpress-font-size-sm);
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    display: inline-block;
    width: fit-content;
}

.knowpress-membership-level.free {
    background: var(--knowpress-gray-200);
    color: var(--knowpress-gray-700);
}

.knowpress-membership-level.basic {
    background: #dbeafe;
    color: var(--knowpress-primary);
}

.knowpress-membership-level.premium {
    background: #fef3c7;
    color: #d97706;
}

.knowpress-membership-level.enterprise {
    background: #fce7f3;
    color: #be185d;
}

.knowpress-usage-info {
    font-size: var(--knowpress-font-size-xs);
    color: var(--knowpress-gray-600);
}

.knowpress-usage-info.normal {
    color: var(--knowpress-success);
}

.knowpress-usage-info.warning {
    color: var(--knowpress-warning);
}

.knowpress-usage-info.error {
    color: var(--knowpress-error);
}

.knowpress-usage-warning {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 12px;
}

.knowpress-warning-content {
    display: flex;
    align-items: center;
    gap: 8px;
}

.knowpress-warning-icon {
    font-size: 16px;
}

.knowpress-warning-text {
    flex: 1;
    font-size: var(--knowpress-font-size-sm);
    color: var(--knowpress-error);
}

.knowpress-upgrade-btn {
    background: var(--knowpress-primary);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: var(--knowpress-font-size-xs);
    cursor: pointer;
    transition: background-color 0.2s;
}

.knowpress-upgrade-btn:hover {
    background: var(--knowpress-primary-hover);
}

/* 登录提示样式 */
.knowpress-login-prompt {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    color: white;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.knowpress-login-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.knowpress-login-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.knowpress-login-text {
    flex: 1;
}

.knowpress-login-text h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
    font-weight: 600;
}

.knowpress-login-text p {
    margin: 0;
    font-size: 14px;
    opacity: 0.9;
}

.knowpress-login-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.knowpress-login-btn,
.knowpress-register-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.knowpress-login-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.knowpress-login-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.knowpress-register-btn {
    background: white;
    color: #667eea;
    border: 1px solid white;
}

.knowpress-register-btn:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .knowpress-message-content {
        font-size: 0.9em;
    }
    
    .knowpress-title {
        font-size: 1.1em;
    }
    
    .knowpress-subtitle {
        font-size: 1em;
    }
    
    .knowpress-price {
        font-size: 1em;
        padding: 0.15em 0.4em;
    }
    
    .knowpress-link {
        word-break: break-all;
        font-size: 0.85em;
    }
}

/* ========================================
   窗口控制样式
   ======================================== */

/* 调整大小按钮 */
.knowpress-resize {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--knowpress-radius);
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.knowpress-resize:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.knowpress-resize svg {
    width: 16px;
    height: 16px;
}

/* 调整大小手柄 */
.knowpress-resize-handle {
    position: absolute;
    z-index: 10;
    background: transparent;
    transition: background-color 0.2s ease;
}

.knowpress-resize-handle:hover {
    background: rgba(var(--knowpress-primary-rgb), 0.3);
}

/* 角部手柄 */
.knowpress-resize-nw {
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    cursor: nw-resize;
}

.knowpress-resize-ne {
    top: 0;
    right: 0;
    width: 12px;
    height: 12px;
    cursor: ne-resize;
}

.knowpress-resize-sw {
    bottom: 0;
    left: 0;
    width: 12px;
    height: 12px;
    cursor: sw-resize;
}

.knowpress-resize-se {
    bottom: 0;
    right: 0;
    width: 12px;
    height: 12px;
    cursor: se-resize;
}

/* 边缘手柄 */
.knowpress-resize-n {
    top: 0;
    left: 12px;
    right: 12px;
    height: 6px;
    cursor: n-resize;
}

.knowpress-resize-s {
    bottom: 0;
    left: 12px;
    right: 12px;
    height: 6px;
    cursor: s-resize;
}

.knowpress-resize-w {
    top: 12px;
    bottom: 12px;
    left: 0;
    width: 6px;
    cursor: w-resize;
}

.knowpress-resize-e {
    top: 12px;
    bottom: 12px;
    right: 0;
    width: 6px;
    cursor: e-resize;
}

/* 最大化状态 */
.knowpress-chat-container.knowpress-maximized,
.knowpress-chat-window.knowpress-maximized {
    width: 100vw !important;
    height: 100vh !important;
    top: 0 !important;
    left: 0 !important;
    bottom: auto !important;
    right: auto !important;
    border-radius: 0;
    max-width: none;
    max-height: none;
}

/* 拖拽状态 */
.knowpress-chat-container.knowpress-dragging,
.knowpress-chat-window.knowpress-dragging {
    cursor: grabbing;
    user-select: none;
}

/* 调整大小状态 */
.knowpress-chat-container.knowpress-resizing,
.knowpress-chat-window.knowpress-resizing {
    cursor: se-resize;
    user-select: none;
}

/* 头部按钮组 */
.knowpress-header-actions {
    display: flex;
    gap: 4px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.knowpress-header-actions button {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 1);
    color: #333;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 8px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    min-width: 30px;
    height: 30px;
    backdrop-filter: blur(8px);
    text-shadow: none;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

.knowpress-header-actions button:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
    color: #000;
}

.knowpress-header-actions button:active {
    transform: translateY(0);
}

.knowpress-header-actions button svg {
    width: 20px;
    height: 20px;
    fill: #333;
    stroke: #333;
    filter: none;
}

.knowpress-header-actions button:hover svg {
    fill: #000;
    stroke: #000;
}


/* 淡入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   等待动画效果
   ======================================== */

.knowpress-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    color: #666;
}

.knowpress-loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: knowpress-spin 1s linear infinite;
}

@keyframes knowpress-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.knowpress-loading-text {
    font-size: 14px;
    color: #666;
}

/* 消息发送时的加载状态 */
.knowpress-message-sending {
    opacity: 0.7;
    position: relative;
}

.knowpress-message-sending::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: knowpress-spin 1s linear infinite;
}

/* 输入框禁用状态 */
.knowpress-input-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: #f5f5f5 !important;
}

.knowpress-send-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   窗口固定状态样式
   ======================================== */

.knowpress-chat-window.knowpress-fixed {
    /* 禁用拖拽和调整大小 */
    resize: none !important;
    cursor: default !important;
}

.knowpress-chat-window.knowpress-fixed .knowpress-chat-header {
    cursor: default !important;
}

.knowpress-chat-window.knowpress-fixed .knowpress-resize-handle {
    display: none !important;
}

.knowpress-chat-window.knowpress-fixed .knowpress-resize {
    display: none !important;
}

/* 固定窗口时的提示 */
.knowpress-fixed-notice {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(0, 0, 0, 0.1);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    opacity: 0.7;
    pointer-events: none;
}

/* ===== 流式响应效果样式 ===== */

/* 流式光标动画 */
.knowpress-streaming-cursor {
    color: var(--knowpress-streaming-cursor);
    font-weight: bold;
    animation: knowpress-cursor-blink 1s infinite;
    margin-left: 2px;
}

@keyframes knowpress-cursor-blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* 打字动画效果 */
.knowpress-typing-animation {
    background: linear-gradient(90deg, 
        var(--knowpress-typing-bg) 0%, 
        rgba(37, 99, 235, 0.05) 50%, 
        var(--knowpress-typing-bg) 100%);
    background-size: 200% 100%;
    animation: knowpress-typing-sweep 2s ease-in-out infinite;
    border-radius: var(--knowpress-radius-sm);
    padding: 2px 4px;
    margin: 1px 0;
}

@keyframes knowpress-typing-sweep {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* 流式消息容器 */
.knowpress-message-streaming {
    position: relative;
    overflow: hidden;
}

.knowpress-message-streaming::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(37, 99, 235, 0.1) 50%, 
        transparent 100%);
    animation: knowpress-message-sweep 3s ease-in-out infinite;
}

@keyframes knowpress-message-sweep {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 流式消息内容 - 精致优化 */
.knowpress-message-streaming .knowpress-message-content {
    position: relative;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: knowpress-message-appear 0.5s ease-out;
}

@keyframes knowpress-message-appear {
    0% {
        opacity: 0;
        transform: translateY(10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 完成流式消息后的效果 */
.knowpress-message-normal {
    animation: knowpress-message-complete 0.5s ease-out;
}

@keyframes knowpress-message-complete {
    0% { 
        transform: scale(1.02);
        box-shadow: 0 0 10px rgba(37, 99, 235, 0.3);
    }
    100% { 
        transform: scale(1);
        box-shadow: none;
    }
}

/* 代码块样式优化 */
.knowpress-message-content pre {
    background: var(--knowpress-gray-100);
    border: 1px solid var(--knowpress-gray-200);
    border-radius: var(--knowpress-radius-sm);
    padding: var(--knowpress-spacing-sm);
    margin: var(--knowpress-spacing-sm) 0;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.4;
}

.knowpress-message-content code {
    background: var(--knowpress-gray-100);
    color: var(--knowpress-primary);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .knowpress-streaming-cursor {
        font-size: 0.9em;
    }
    
    .knowpress-typing-animation {
        padding: 1px 2px;
    }
}

/* AI响应HTML样式 - 极简紧凑版 */
.ai-response {
    background: #ffffff;
    border: 1px solid rgba(37, 99, 235, 0.08);
    border-radius: 6px;
    padding: 8px 12px;
    margin: 2px 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
    font-family: var(--knowpress-font-family);
    line-height: 1.3;
    position: relative;
    overflow: hidden;
    font-size: 12px;
    width: 100%;
    max-width: none;
}

/* 移除悬停效果，保持极简 */

.ai-response h2 {
    color: var(--knowpress-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0 0 6px 0;
    display: block;
    position: relative;
    padding-bottom: 2px;
    line-height: 1.3;
}

.ai-response h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 20px;
    height: 1px;
    background: var(--knowpress-primary);
    border-radius: 1px;
}

.ai-response h3 {
    color: var(--knowpress-gray-700);
    font-size: 0.8rem;
    font-weight: 600;
    margin: 4px 0 3px 0;
    padding: 2px 4px;
    background: rgba(37, 99, 235, 0.05);
    border-radius: 2px;
    border-left: 1px solid var(--knowpress-primary);
}

.ai-response .summary {
    background: rgba(37, 99, 235, 0.03);
    color: var(--knowpress-gray-600);
    padding: 4px 6px;
    border-radius: 2px;
    font-style: italic;
    margin-bottom: 4px;
    border: 1px solid rgba(37, 99, 235, 0.06);
    position: relative;
    font-size: 11px;
    line-height: 1.3;
}

.ai-response .summary::before {
    content: '💡';
    margin-right: 3px;
    font-size: 0.7em;
}

.ai-response .content {
    color: var(--knowpress-gray-700);
    padding: 0;
    font-size: 12px;
    line-height: 1.3;
}

.ai-response ul {
    margin: 3px 0;
    padding-left: 8px;
    list-style: none;
}

.ai-response li {
    margin: 2px 0;
    position: relative;
    padding-left: 8px;
    line-height: 1.3;
    font-size: 12px;
}

.ai-response li::before {
    content: '•';
    color: var(--knowpress-primary);
    font-size: 0.5em;
    position: absolute;
    left: 0;
    top: 0;
}

.ai-response p {
    margin: 2px 0;
    line-height: 1.3;
    color: var(--knowpress-gray-600);
    font-size: 12px;
}

.ai-response .pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin: 18px 0;
}

.ai-response .pricing-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: 12px;
    padding: 18px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.ai-response .pricing-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--knowpress-primary), var(--knowpress-primary-light));
}

.ai-response .pricing-item:hover {
    border-color: var(--knowpress-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.15);
}

.ai-response .pricing-item h3 {
    color: var(--knowpress-primary);
    margin: 0 0 10px 0;
    font-size: 1rem;
    font-weight: 600;
    background: none;
    border: none;
    padding: 0;
    border-radius: 0;
}

.ai-response .pricing-item p {
    color: var(--knowpress-gray-600);
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 移动端响应式 - 极简紧凑版 */
@media (max-width: 768px) {
    .ai-response {
        padding: 6px 10px;
        margin: 1px 0;
        font-size: 11px;
    }
    
    .ai-response h2 {
        font-size: 0.8rem;
        margin-bottom: 4px;
    }
    
    .ai-response .summary {
        padding: 3px 5px;
        font-size: 10px;
    }
    
    .ai-response .content {
        font-size: 11px;
    }
    
    .ai-response p {
        font-size: 11px;
        margin: 1px 0;
    }
    
    .ai-response .pricing-grid {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    
    .knowpress-message-content {
        padding: 4px 8px;
        font-size: 11px;
    }
    
    .knowpress-message {
        margin: 0;
        gap: 3px;
    }
}

/* 用户状态样式 */
.knowpress-user-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 13px;
    border-radius: 8px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.knowpress-membership-level {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-size: 12px;
}

.knowpress-membership-level.free {
    color: #ffd700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.knowpress-membership-level.basic {
    color: #4CAF50;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.knowpress-membership-level.premium {
    color: #2196F3;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.knowpress-membership-level.enterprise {
    color: #9C27B0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.knowpress-usage-info {
    font-size: 12px;
    opacity: 0.95;
    font-weight: 500;
}

.knowpress-usage-info.normal {
    color: #e8f5e8;
}

.knowpress-usage-info.warning {
    color: #ffeb3b;
    font-weight: 600;
}

.knowpress-usage-info.error {
    color: #f44336;
    font-weight: 600;
}

.knowpress-usage-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.15) 0%, rgba(255, 193, 7, 0.05) 100%);
    border: 1px solid #ffc107;
    color: #ffc107;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 12px;
    font-size: 13px;
    text-align: center;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(255, 193, 7, 0.2);
}

/* 登录提示样式 */
.knowpress-login-prompt {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.knowpress-login-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.knowpress-login-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.knowpress-login-text h3 {
    margin: 0 0 10px 0;
    font-size: 1.4rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.knowpress-login-text p {
    margin: 0;
    font-size: 1rem;
    opacity: 0.95;
    line-height: 1.5;
    font-weight: 400;
}

.knowpress-login-actions {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.knowpress-login-btn,
.knowpress-register-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    min-width: 120px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.knowpress-login-btn {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
}

.knowpress-login-btn:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.knowpress-register-btn {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    border: 2px solid #4CAF50;
}

.knowpress-register-btn:hover {
    background: linear-gradient(135deg, #45a049 0%, #3d8b40 100%);
    border-color: #45a049;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.4);
}

/* 访客禁用样式 */
.knowpress-guest-disabled {
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    border: 2px solid #ddd;
    border-radius: 12px;
    margin: 15px 0;
}

.knowpress-guest-notice {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    text-align: left;
}

.knowpress-guest-icon {
    font-size: 2.5rem;
    opacity: 0.7;
}

.knowpress-guest-text h4 {
    margin: 0 0 8px 0;
    color: #666;
    font-size: 1.1rem;
    font-weight: 600;
}

.knowpress-guest-text p {
    margin: 0;
    color: #888;
    font-size: 0.95rem;
    line-height: 1.4;
}

/* 禁用状态样式 */
.knowpress-input:disabled {
    background: #f5f5f5 !important;
    color: #999 !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
}

.knowpress-send:disabled {
    background: #ccc !important;
    color: #999 !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
}