/* 组件样式 */

/* 头部样式 */
.header {
    background: 
        var(--bg-primary),
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3), transparent 70%),
        radial-gradient(circle at 80% 20%, rgba(120, 119, 198, 0.3), transparent 70%),
        radial-gradient(circle at 40% 80%, rgba(120, 119, 198, 0.3), transparent 70%);
    color: white;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 
        0 8px 32px var(--shadow-color),
        inset 0 1px 0 rgba(255,255,255,0.2);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: headerPulse 3s ease-in-out infinite alternate;
}

@keyframes headerPulse {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

.header h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* 主题切换按钮 */
.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    cursor: pointer;
    padding: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    font-size: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: scale(1.1) rotate(180deg);
}

/* 帮助按钮 */
.help-button {
    color: white;
    text-decoration: none;
    padding: 12px 18px;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.help-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.help-text {
    flex-shrink: 1;
    min-width: 0;
}

.help-button:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    text-decoration: none;
    color: white;
}

/* 上传区域 */
.upload-section {
    padding: 60px 20px;
    text-align: center;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area {
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    padding: 60px 40px;
    margin: 0;
    width: 100%;
    cursor: pointer;
    transition: all 0.3s;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.upload-area:hover, .upload-area.dragover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

.upload-area input[type="file"] {
    display: none;
}

.upload-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.upload-text {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.9);
}

.upload-hint {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.5;
}

/* 亮色主题下的上传区域样式 */
.light-theme .upload-area {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.light-theme .upload-area:hover, 
.light-theme .upload-area.dragover {
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(0, 0, 0, 0.4);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
}

.light-theme .upload-text {
    color: rgba(0, 0, 0, 0.9);
}

.light-theme .upload-hint {
    color: rgba(0, 0, 0, 0.6);
}

/* 统计信息 */
.stats {
    background: var(--bg-secondary);
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: none;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 16px var(--shadow-color);
}

.stats.show {
    display: flex !important;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: var(--bg-card);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

/* 控制按钮 */
.controls {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: none;
    flex-direction: column;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 24px var(--shadow-color);
    backdrop-filter: blur(12px);
}

.controls.show {
    display: flex !important;
}

/* 控制面板切换按钮 */
.controls-toggle {
    background: var(--bg-card);
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
    user-select: none;
}

.toggle-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.controls-toggle:hover {
    background: var(--bg-tertiary);
}

.toggle-icon {
    font-size: 16px;
}

.toggle-text {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

/* 快速回到顶部按钮 */
.scroll-top-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
    padding: 6px 12px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    opacity: 0;
    transform: translateX(15px);
    pointer-events: none;
    backdrop-filter: blur(10px);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    white-space: nowrap;
}

/* 只在收起状态时显示按钮 */
.scroll-top-btn.show {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.scroll-top-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    color: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
}

.scroll-text {
    font-size: 12px;
    font-weight: 500;
}

/* CSS箭头样式 */
.arrow-up {
    width: 0;
    height: 0;
    border-left: 3px solid transparent;
    border-right: 3px solid transparent;
    border-bottom: 5px solid currentColor;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.arrow-up::after {
    content: '';
    position: absolute;
    bottom: -7px;
    left: -2px;
    width: 4px;
    height: 1px;
    background: currentColor;
    transition: all 0.3s ease;
}

.scroll-top-btn:hover .arrow-up {
    transform: translateY(-1px);
}

/* 亮色主题下的按钮样式 */
.light-theme .scroll-top-btn {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
    color: rgba(0, 0, 0, 0.7);
}

.light-theme .scroll-top-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.2);
    color: rgba(0, 0, 0, 1);
}

/* 控制面板内容 */
.controls-content {
    padding: 18px 24px;
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
    transition: all 0.3s ease;
    overflow: hidden;
}

.controls-content.collapsed {
    max-height: 0;
    padding: 0 24px;
    opacity: 0;
}

.btn {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow-color);
}

.btn:hover::before {
    left: 100%;
}

.search-box {
    flex: 1;
    max-width: 400px;
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.search-box:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
    transform: scale(1.02);
}

/* 对话样式 */
.conversation {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 30px;
    overflow: hidden;
    box-shadow: 0 4px 20px var(--shadow-color);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.conversation:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--shadow-color);
}

.conversation-header {
    background: var(--bg-secondary);
    padding: 15px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--border-color);
    user-select: none;
    transition: all 0.3s ease;
    gap: 15px;
}

.conversation-header:hover {
    background: var(--bg-card);
}

.conversation-title-area {
    flex: 1;
    min-width: 0;
}

.conversation-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.conversation-preview {
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.4;
    opacity: 0.8;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-word;
}

.conversation-meta {
    color: var(--text-secondary);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.conversation-arrow {
    color: var(--text-accent);
    font-size: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all 0.3s ease;
}

.conversation-arrow:hover {
    color: var(--accent-color);
    transform: scale(1.05);
}

.conversation-content {
    display: block;
}

.conversation-content.collapsed {
    display: none;
}

/* 用户消息样式 */
.user-msg {
    background: linear-gradient(135deg, #1f6feb, #0969da);
    color: white;
    padding: 20px;
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.user-msg .avatar {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

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

.user-msg .label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    opacity: 0.9;
}

.user-msg .content {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 助手消息样式 */
.assistant-msg {
    background: var(--bg-tertiary);
    padding: 20px;
    position: relative;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.assistant-msg .avatar {
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

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

.assistant-msg .label {
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.assistant-msg .content {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Claude回复文本内容样式 */
.assistant-text-content {
    margin-top: 10px;
}

/* 大内容块样式 */
.large-content-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 15px 0;
    overflow: hidden;
}

.content-header {
    background: var(--bg-card);
    padding: 12px 15px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    user-select: none;
}

.content-header:hover {
    background: var(--bg-tertiary);
}

.content-type {
    color: var(--text-accent);
    font-weight: 600;
}

.content-info {
    color: var(--text-secondary);
    font-size: 12px;
}

.toggle-icon {
    color: var(--text-accent);
    font-size: 12px;
}

.content-preview, .content-full {
    padding: 15px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.content-preview {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 代码块样式 */
.code-block {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 8px;
    margin: 15px 0;
    overflow: hidden;
}

.code-lang {
    background: var(--bg-card);
    padding: 8px 15px;
    font-size: 12px;
    color: var(--code-lang);
    font-weight: 600;
    text-transform: uppercase;
    border-bottom: 1px solid var(--code-border);
}

.code-content {
    padding: 15px;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 13px;
    line-height: 1.5;
    color: var(--code-text);
    background: var(--code-bg);
    overflow-x: auto;
}

code {
    background: var(--bg-card);
    padding: 3px 6px;
    border-radius: 3px;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 13px;
    color: var(--text-accent);
}

/* 工具相关样式 */
.tools-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.tool-call {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin: 15px 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.tool-call:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.tool-header {
    background: var(--bg-card);
    padding: 15px 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    user-select: none;
    transition: all 0.3s ease;
}

.tool-header:hover {
    background: var(--bg-secondary);
}

.tool-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.tool-name {
    color: var(--text-accent);
    font-weight: 600;
    font-size: 14px;
}

.tool-toggle {
    margin-left: auto;
    color: var(--text-accent);
    font-size: 12px;
}

.tool-details {
    padding: 18px;
    background: var(--bg-tertiary);
}

.param {
    margin-bottom: 8px;
    font-size: 13px;
}

.param-key {
    color: var(--text-accent);
    font-weight: 600;
}

.param-value {
    color: var(--text-primary);
    margin-left: 8px;
    font-family: monospace;
    word-break: break-all;
    white-space: pre-wrap;
    display: block;
    background: var(--bg-tertiary);
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    margin-top: 4px;
}

.param-expand-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 2px 6px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px;
    margin-left: 8px;
    transition: all 0.2s ease;
}

.param-expand-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

/* 工具结果样式 */
.tool-result {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin: 12px 0;
    overflow: hidden;
}

.result-content {
    padding: 15px;
    font-size: 12px;
    color: var(--text-secondary);
    font-family: monospace;
    line-height: 1.4;
    white-space: pre-wrap;
    position: relative;
    background: var(--bg-tertiary);
}

.result-content.collapsed {
    max-height: 4em;
    overflow: hidden;
    position: relative;
}

.result-content.collapsed::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1em;
    background: linear-gradient(transparent, var(--bg-tertiary));
    pointer-events: none;
}

.result-content.collapsed pre {
    max-height: 4em;
    overflow: hidden;
}

.result-content.expanded {
    max-height: none;
}

.result-expand-btn {
    background: var(--bg-card);
    color: var(--text-accent);
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px;
    margin: 5px 0;
}

.result-expand-btn:hover {
    background: var(--border-color);
}

/* 新的工具结果样式 */
.tool-result-new {
    margin-top: 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
}

.result-title {
    background: var(--bg-card);
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-accent);
    font-weight: 600;
}

.result-display {
    padding: 12px;
}

.result-display .result-text {
    white-space: pre-wrap;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    line-height: 1.6;
    font-size: 0.9em;
    word-wrap: break-word;
    tab-size: 4;
    border: 1px solid var(--border-color);
    display: block;
    margin: 8px 0;
}

.result-display.collapsible .tool-result-content {
    max-height: 150px;
    overflow: hidden;
    position: relative;
}

.result-display.collapsible .tool-result-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(to bottom, transparent, var(--bg-tertiary) 80%);
    pointer-events: none;
}

.result-text {
    position: relative;
}

.tool-result-content {
    white-space: pre-wrap;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 12px 32px 12px 12px;
    border-radius: 6px;
    overflow-x: auto;
    line-height: 1.6;
    font-size: 0.9em;
    word-wrap: break-word;
    tab-size: 4;
    border: 1px solid var(--border-color);
    display: block;
    margin: 8px 0;
}

.result-indicator {
    background: var(--accent-color);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    margin-left: 8px;
}

/* 复制按钮样式 */
.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10;
}

.code-content:hover .copy-btn,
.result-content:hover .copy-btn,
.result-text:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    background: var(--accent-hover);
}

.copy-btn.copied {
    background: var(--accent-color);
}

/* 快捷键提示样式 */
.shortcut-hint {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-card);
    color: var(--text-accent);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    z-index: 1000;
    box-shadow: 0 2px 12px var(--shadow-color);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    pointer-events: none;
    border: 1px solid var(--border-color);
}

.shortcut-hint.show {
    opacity: 1;
    transform: translateY(0);
}

/* 主要内容区域样式 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 底部信息样式 */
.bottom-info {
    margin-top: auto;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 16px 20px;
    text-align: center;
}

/* 亮色主题下的底部信息样式 */
.light-theme .bottom-info {
    background: rgba(255, 255, 255, 0.95);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.info-line {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.light-theme .info-line {
    color: rgba(0, 0, 0, 0.8);
}

.separator {
    color: rgba(255, 255, 255, 0.4);
    margin: 0 4px;
}

.light-theme .separator {
    color: rgba(0, 0, 0, 0.4);
}

.qr-trigger {
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    transition: color 0.2s ease;
}

.qr-trigger:hover {
    color: #ffffff;
}

.light-theme .qr-trigger {
    color: rgba(0, 0, 0, 0.9);
}

.light-theme .qr-trigger:hover {
    color: #000000;
}

/* 二维码弹窗样式 */
.qr-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    cursor: pointer;
}

.qr-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    cursor: default;
    border: 1px solid var(--border-color);
    max-width: 320px;
    width: 90%;
}

.qr-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.qr-header h3 {
    color: var(--text-accent);
    margin: 0;
    font-size: 18px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.qr-modal-image {
    width: 200px;
    height: 200px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    object-fit: cover;
    margin-bottom: 16px;
}

.qr-modal-text {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
    line-height: 1.4;
}

/* 文件提示样式 */
.file-hint {
    max-width: 600px;
    margin: 0 auto 40px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
}

.hint-title {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.hint-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
}

.hint-text code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
}

/* 亮色主题下的文件提示样式 */
.light-theme .file-hint {
    background: rgba(0, 0, 0, 0.03);
    border-color: rgba(0, 0, 0, 0.1);
}

.light-theme .hint-title {
    color: rgba(0, 0, 0, 0.9);
}

.light-theme .hint-text {
    color: rgba(0, 0, 0, 0.7);
}

.light-theme .hint-text code {
    background: rgba(0, 0, 0, 0.1);
    color: rgba(0, 0, 0, 0.9);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .upload-section {
        padding: 40px 15px;
        min-height: 40vh;
    }
    
    .upload-area {
        padding: 40px 30px;
        max-width: 400px;
    }
    
    .upload-icon {
        font-size: 48px;
        margin-bottom: 15px;
    }
    
    .upload-text {
        font-size: 18px;
    }
    
    .info-line {
        flex-direction: column;
        gap: 4px;
    }
    
    .separator {
        display: none;
    }
    
    .qr-modal-content {
        max-width: 280px;
        padding: 20px;
    }
    
    .qr-modal-image {
        width: 180px;
        height: 180px;
    }
    
    .file-hint {
        max-width: 500px;
        margin: 0 auto 30px;
        padding: 15px;
    }
    
    .hint-title {
        font-size: 15px;
        margin-bottom: 10px;
    }
    
    .hint-text {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .upload-section {
        padding: 30px 10px;
        min-height: 35vh;
    }
    
    .upload-area {
        padding: 30px 20px;
        max-width: 300px;
    }
    
    .upload-icon {
        font-size: 40px;
        margin-bottom: 12px;
    }
    
    .upload-text {
        font-size: 16px;
    }
    
    .upload-hint {
        font-size: 13px;
    }
    
    .file-hint {
        max-width: 350px;
        margin: 0 auto 20px;
        padding: 12px;
    }
    
    .hint-title {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .hint-text {
        font-size: 12px;
    }
}