@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

/* 主题颜色变量 */
:root {
    --gradient-start: #f97316;
    --gradient-mid: #f97316;
    --gradient-end: #ef4444;
    --font-family: 'Roboto', sans-serif;
}

body.dark-mode {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --highlight-bg-color: #333333;
    --text-color-primary: #e0e0e0;
    --text-color-secondary: #a5a5a5;
    --text-color-tertiary: #888;
    --border-color: #444;
    --input-bg-color: #252525;
    --input-hover-bg-color: #2a2a2a;
    --surface-border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.37);
    --error-color: #ef4444;
}

body.light-mode {
    --bg-color: #f0f2f5;
    --surface-color: #ffffff;
    --highlight-bg-color: #e5e7eb;
    --text-color-primary: #1f2937;
    --text-color-secondary: #4b5563;
    --text-color-tertiary: #6b7280;
    --border-color: #d1d5db;
    --input-bg-color: #f3f4f6;
    --input-hover-bg-color: #e5e7eb;
    --surface-border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --error-color: #dc2626;
}

body {
    font-family: var(--font-family);
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
    color: var(--text-color-primary);
    margin: 0;
    padding: 0;
    height: 100vh; /* 固定高度为视窗高度 */
    max-height: 100vh; /* 防止超出视窗 */
    overflow: hidden; /* 防止body产生滚动条 */
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

/* 顶部导航栏样式 */
.top-nav {
    display: flex;
    align-items: center;
    padding: 0.75rem 2rem;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--surface-border-color);
    box-shadow: 0 2px 8px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s, border-color 0.3s;
    position: relative;
}

.title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, #40ffaa, #4079ff, #40ffaa, #4079ff, #40ffaa);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    animation: gradient-flow 8s linear infinite;
    margin: 0;
    flex: 1;
}

/* 渐变动画关键帧 */
@keyframes gradient-flow {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 模型选择器居中定位 */
.model-selector-container {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    background-color: var(--input-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2px;
    transition: background-color 0.3s, border-color 0.3s;
    height: 40px; /* 调整容器高度：36px内容 + 4px padding */
    box-sizing: border-box;
}

/* 导航控制区域 */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-left: auto;
}

.credits-display {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-color-primary);
    background-color: var(--input-bg-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    height: 36px; /* 统一高度 */
    box-sizing: border-box;
}

.credits-display span {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-color-primary);
}

.credits-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-color-primary);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
    height: 36px; /* 统一高度 */
    box-sizing: border-box;
}

.nav-btn:hover {
    background-color: var(--input-hover-bg-color);
}

.nav-btn svg {
    stroke: var(--text-color-secondary);
}

/* 删除旧的冲突样式 */

.model-selector-container::before {
    content: '';
    position: absolute;
    top: 2px;
    left: var(--highlight-left, 2px);
    width: var(--highlight-width, 0px);
    height: calc(100% - 4px);
    background-color: var(--highlight-bg-color);
    border-radius: 20px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    transition: left 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1;
}

.model-card {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    cursor: pointer;
    font-weight: 500;
    white-space: nowrap;
    position: relative;
    z-index: 2;
    color: var(--text-color-secondary);
    transition: color 0.3s ease;
    border-radius: 20px;
    background: none;
    border: none;
    margin: 0;
    min-width: 80px; /* 确保最小宽度一致 */
    text-align: center; /* 文本居中 */
    height: 36px; /* 统一高度与其他按钮一致 */
    box-sizing: border-box;
    line-height: 1;
}

.model-card.active {
    color: var(--text-color-primary);
}

/* 兑换码弹窗样式 */
.redeem-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.redeem-modal .redeem-modal-content {
    background-color: var(--surface-color);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 32px var(--shadow-color);
    border: 1px solid var(--surface-border-color);
    width: 400px;
    height: 300px;
    max-width: 90vw;
    max-height: 90vh;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
}

.redeem-modal .redeem-modal-content h3 {
    margin: 0;
    color: var(--text-color-primary);
    text-align: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.redeem-modal .redeem-modal-content input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-bg-color);
    color: var(--text-color-primary);
    font-size: 1rem;
    margin: 0;
    box-sizing: border-box;
    flex-shrink: 0;
}

.redeem-modal .redeem-modal-content .button-container {
    display: flex;
    justify-content: center;
    margin: 0;
}

.redeem-modal .redeem-modal-content button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.5rem;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    width: auto;
    min-width: 100px;
    height: 36px;
    flex-shrink: 0;
}

/* 兑换按钮悬停效果 */
.redeem-modal-content button:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

/* 兑换图标样式 */
.exchange-icon {
    width: 16px;
    height: 16px;
    margin-right: 6px;
}

.redeem-modal .close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color-secondary);
}

.main-container {
    display: flex;
    width: 100%;
    height: calc(100vh - 80px); /* 固定高度：视窗高度减去导航栏高度 */
    min-height: 600px; /* 设置最小高度，防止浏览器窗口过小 */
}

.controls-container {
    width: 33.33%; /* [修改] 固定宽度为 1/3 */
    min-width: 400px; /* 设置最小宽度 */
    background: var(--surface-color);
    padding: 1.5rem;
    border-right: 1px solid var(--surface-border-color);
    display: flex;
    flex-direction: column;
    height: 100%; /* 确保填满主容器高度 */
}

/* [修改] 两个控制面板都使用 flex 布局 */
#nanobanana-controls, #veo-controls {
    display: flex;
    flex-direction: column;
    height: 100%; /* 使用100%高度 */
    min-height: 0; /* 允许flex子项收缩 */
}

.result-container {
    width: 66.67%; /* [修改] 固定宽度为 2/3 */
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto; /* 如果右侧内容超长，允许滚动 */
    overflow-x: visible; /* 允许水平方向溢出，用于显示提示框 */
    height: 100%; /* 确保填满主容器高度 */
    max-height: 100%; /* 防止超出容器 */
}

/* [修改] 使用更具体的选择器来确保所有内容都被隐藏 */
.result-container.hidden-content > .result-header {
    display: none;
}

.current-task-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.current-task-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 600;
}

.task-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.task-status.processing {
    background: #e3f2fd;
    color: #1976d2;
}

.task-status.completed {
    background: #e8f5e8;
    color: #2e7d32;
}

.task-status.failed {
    background: #ffebee;
    color: #c62828;
}

.current-task-prompt {
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* 历史记录区域样式 */
#history-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: visible; /* 允许水平方向溢出，用于显示提示框 */
    padding-right: 0.5rem;
}

/* 历史记录项样式 */
.history-item {
    background: var(--surface-color);
    border: 1px solid var(--surface-border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    padding: 1rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform 0.2s, box-shadow 0.2s;
}



.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.history-item-title {
    font-weight: 500;
    color: var(--text-color-primary);
    font-size: 1rem;
    flex: 1;
}

.history-item-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.history-item-time {
    font-size: 0.8rem;
    color: var(--text-color-tertiary);
    white-space: nowrap;
    margin-left: 0.5rem;
}

/* 按钮基础样式 */
.delete-task-btn, .edit-task-btn, .regenerate-task-btn {
    background: transparent;
    border: 1px solid #ccc;
    color: var(--text-color-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: visible;
}

.delete-task-btn svg, .edit-task-btn svg, .regenerate-task-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

/* 悬浮效果 */
.delete-task-btn:hover, .edit-task-btn:hover, .regenerate-task-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.delete-task-btn:hover svg, .edit-task-btn:hover svg, .regenerate-task-btn:hover svg {
    transform: scale(1.1);
}

/* 删除按钮样式 */
.delete-task-btn:hover {
    background: #ffebee;
    border-color: #c62828;
    color: #c62828;
}

/* 编辑按钮样式 */
.edit-task-btn:hover {
    background: #e3f2fd;
    border-color: #1976d2;
    color: #1976d2;
}

/* 重新生成按钮样式 */
.regenerate-task-btn:hover {
    background: #e8f5e8;
    border-color: #4caf50;
    color: #4caf50;
}

/* 工具提示样式 */
.delete-task-btn::after, .edit-task-btn::after, .regenerate-task-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
    margin-bottom: 5px;
}

.delete-task-btn::before, .edit-task-btn::before, .regenerate-task-btn::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.delete-task-btn:hover::after, .edit-task-btn:hover::after, .regenerate-task-btn:hover::after,
.delete-task-btn:hover::before, .edit-task-btn:hover::before, .regenerate-task-btn:hover::before {
    opacity: 1;
    visibility: visible;
}

.history-item-prompt {
    position: relative; /* 添加相对定位，用于放置复制按钮 */
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 1rem;
    padding: 0.5rem;
    background: var(--input-bg-color);
    border-radius: 4px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* 提示词复制按钮样式 */
.prompt-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 0.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.prompt-copy-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: #007bff;
    color: #007bff;
}

.history-item-prompt:hover .prompt-copy-btn {
    opacity: 1;
    visibility: visible;
}

/* 深色模式下的复制按钮样式 */
[data-theme="dark"] .prompt-copy-btn {
    background: rgba(45, 45, 45, 0.9);
    border-color: #555;
    color: #ccc;
}

[data-theme="dark"] .prompt-copy-btn:hover {
    background: rgba(45, 45, 45, 1);
    border-color: #007bff;
    color: #007bff;
}

.history-item-results {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center; /* 居中对齐 */
    align-items: center; /* 垂直居中 */
}

.history-result-item {
    position: relative;
    width: auto; /* 宽度自适应 */
    max-width: 400px; /* 最大宽度限制 */
    min-width: 200px; /* 最小宽度限制 */
    height: 400px; /* 固定高度 */
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s;
    flex-shrink: 0; /* 防止收缩 */
}



.history-result-item img,
.history-result-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-item-status {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-left: 0.5rem;
}

.status-completed {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

.status-processing {
    background: rgba(251, 191, 36, 0.1);
    color: #fbbf24;
}

.status-failed {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

h2 {
    color: var(--text-color-primary);
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.api-key-section, .upload-section, .prompt-section {
    margin-bottom: 0.75rem; /* 进一步减少底部间距 */
}

.prompt-section {
    display: flex;
    flex-direction: column;
    flex: 1; /* 占据剩余空间 */
}

.prompt-section textarea {
    flex: 1; /* 占据提示词区域的剩余空间 */
    min-height: 100px; /* 设置最小高度 */
    resize: vertical; /* 允许垂直调整大小 */
}

.settings-section {
    margin-bottom: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
}

.setting-item label {
    margin-bottom: 0.5rem;
    color: var(--text-color-secondary);
}

.param-note {
    font-size: 0.8rem;
    color: var(--text-color-tertiary);
    margin-left: 0.5rem;
}

.prompt-remark {
    font-size: 0.85rem;
    color: var(--text-color-secondary);
    font-weight: normal;
    margin-left: 0.75rem;
    min-height: 1.2em;
}


.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--input-bg-color);
    cursor: pointer;
    position: relative;
    min-height: 120px; /* 设置最小高度与缩略图一致 */
}

.upload-area label {
    display: block;
    width: 100%;
    height: 100%;
    cursor: pointer;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    box-sizing: border-box;
}

.upload-area:hover, .upload-area.drag-over {
    border-color: var(--gradient-mid);
    background: var(--input-hover-bg-color);
}

.upload-area p { margin: 0 0 0.5rem 0; font-size: 0.9rem; }
.upload-area span { color: var(--text-color-tertiary); font-size: 0.75rem; }
input[type="file"] { display: none; }
#thumbnails-container { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 1rem; margin-top: 1rem; }

/* nanobanana上传区域和缩略图同行显示 */
.upload-and-thumbnails {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.upload-and-thumbnails .upload-area {
    flex: 0 0 calc((100% - 2rem) / 4); /* 占据4分之1的宽度(减去gap) */
    aspect-ratio: 1; /* 确保是正方形 */
    padding: 0; /* 移除padding */
    box-sizing: border-box;
}

.upload-and-thumbnails .upload-area label {
    padding: 1rem; /* 保持内部间距 */
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.upload-and-thumbnails #thumbnails-container {
    flex: 0 0 calc((100% - 2rem) * 3 / 4); /* 占据4分之3的宽度 */
    margin-top: 0;
    align-content: start;
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3列等分 */
    gap: 1rem;
    justify-content: stretch;
    min-width: 0;
}

/* Veo3 缩略图容器 - 限制大小避免影响下方输入框 */
#thumbnails-container-veo { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); 
    gap: 1rem; 
    margin-top: 0.5rem; /* 减少上边距 */
    max-height: 120px; /* 设置固定高度 */
    overflow: hidden;
}

/* Veo3 上传区域 - 确保与缩略图高度一致 */
#veo-controls .upload-area {
    min-height: 120px;
    height: 120px; /* 固定高度与缩略图一致 */
    padding: 0.5rem; /* 进一步减少padding确保高度一致 */
}

#veo-controls .upload-area label {
    padding: 0.5rem; /* 确保label的padding与容器一致 */
}

.thumbnail-wrapper { 
    position: relative; 
    border-radius: 8px; 
    overflow: hidden; 
    background: var(--input-bg-color); 
    aspect-ratio: 1; /* 确保缩略图是正方形 */
    width: 100%; /* 改为100%以适应grid列宽 */
    height: auto; /* 高度自动，由aspect-ratio控制 */
}
.thumbnail-wrapper img { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    object-fit: contain; /* 改为contain确保完整显示图片 */
    object-position: center; /* 居中显示 */
}
.thumbnail-wrapper .remove-btn { position: absolute; top: 5px; right: 5px; background: rgba(0, 0, 0, 0.5); border: none; color: white; width: 20px; height: 20px; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 14px; padding: 0; line-height: 1; }

textarea, input[type="password"], input[type="number"], select {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--input-bg-color);
    color: var(--text-color-primary);
    box-sizing: border-box;
    font-family: inherit;
    font-size: 1rem;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
}

textarea { min-height: 100px; resize: vertical; }

select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23888' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    background-size: 1.2em;
    padding-right: 2.5rem;
}

.light-mode select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}


.error-message { color: var(--error-color); font-size: 0.85rem; margin-top: 0.5rem; min-height: 1.2em; }
.input-error { border-color: var(--error-color) !important; }

/* 按钮组样式 */
.button-group {
    display: flex;
    gap: 0.8rem;
    margin-top: 1rem;
    margin-bottom: 2rem;
    flex-shrink: 0;
}

/* [修改] 移除 margin-top: auto */
.generate-btn {
    background: linear-gradient(90deg, var(--gradient-mid), var(--gradient-end));
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    flex: 1; /* 在按钮组中平分宽度 */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0; /* 移除按钮级别的gap，让内部元素自己控制间距 */
    transition: transform 0.2s ease, opacity 0.2s ease;
    margin: 0; /* 移除单独的margin，由button-group控制 */
    flex-shrink: 0; /* 防止按钮被压缩 */
}

/* 提示词优化按钮样式 */
.optimize-prompt-btn {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-mid));
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    flex: 1; /* 在按钮组中平分宽度 */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
    margin: 0;
    flex-shrink: 0;
}

.btn-text {
    display: flex;
    align-items: center;
    gap: 0; /* 完全消除"生成"和积分之间的距离 */
}

.icon-text-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.generate-btn:not(:disabled):hover { transform: translateY(-2px); }
.generate-btn:disabled { opacity: 0.7; cursor: not-allowed; }

.optimize-prompt-btn:not(:disabled):hover { transform: translateY(-2px); }
.optimize-prompt-btn:disabled { opacity: 0.7; cursor: not-allowed; }

.spinner { width: 20px; height: 20px; border: 2px solid transparent; border-top-color: #ffffff; border-radius: 50%; animation: spin 1s linear infinite; }
.hidden { display: none !important; }

/* [修改] 单个缩略图样式 - 增加相对定位 */
.result-thumbnail {
    height: 100%;
    aspect-ratio: 1 / 1;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    position: relative; /* <--- [修改] 必须是相对定位，才能容纳绝对定位的子元素 */
    cursor: pointer;
    transition: transform 0.2s ease;
}

/* [新增] 悬浮按钮容器的样式 */
.thumbnail-actions {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    gap: 0.5rem;
    opacity: 0; /* 默认完全透明 */
    visibility: hidden; /* 默认隐藏，不参与交互 */
    transition: opacity 0.2s ease, visibility 0.2s ease;
    background-color: rgba(0, 0, 0, 0.5); /* 半透明背景，以防按钮看不清 */
    padding: 0.3rem;
    border-radius: 6px;
}

/* [新增] 鼠标悬浮在缩略图上时，显示按钮 */
.result-thumbnail:hover .thumbnail-actions,
.history-result-item:hover .thumbnail-actions {
    opacity: 1;
    visibility: visible;
}

/* [新增] 悬浮按钮本身的样式 */
.thumbnail-actions button {
    background: none;
    border: none;
    padding: 0;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumbnail-actions button svg {
    width: 16px;
    height: 16px;
}

.thumbnail-actions button:hover {
    color: var(--primary-color);
}

.result-thumbnail:hover {
    transform: scale(1.05); /* 鼠标悬浮时轻微放大 */
}

.result-thumbnail img,
.result-thumbnail video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f5f5f5;
}

.result-thumbnail.active {
    border: 2px solid var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color);
}

.result-thumbnail.failed {
    background-color: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
}
.loading-spinner { width: 50px; height: 50px; border: 5px solid var(--border-color); border-top-color: var(--gradient-mid); border-radius: 50%; animation: spin 1s linear infinite; margin-bottom: 1rem; }

/* 处理中容器样式 */
.processing-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: auto; /* 宽度自适应 */
    max-width: 400px; /* 最大宽度限制 */
    min-width: 200px; /* 最小宽度限制 */
    height: 400px; /* 与history-result-item保持一致 */
    text-align: center;
    border-radius: 6px; /* 与history-result-item保持一致 */
}

.processing-text {
    color: var(--text-color-secondary);
    font-size: 14px;
    margin-top: 0.5rem;
}

.spinner-circle {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--gradient-mid);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* 重新生成按钮动画效果 */
.animate-spin {
    animation: spin 1s linear infinite;
}

.regenerate-task-btn {
    transition: all 0.2s ease;
}

.regenerate-task-btn:hover {
    transform: scale(1.05);
}

.regenerate-task-btn.processing {
    pointer-events: none;
}

.regenerate-tooltip {
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* 滚动提示动画 */
@keyframes slideInScale {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) translateY(0);
    }
}

@keyframes slideOutScale {
    0% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9) translateY(-20px);
    }
}

.scroll-indicator {
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 全屏 Modal 样式 */
#fullscreen-modal { 
    position: fixed; 
    z-index: 9999; 
    left: 0; 
    top: 0; 
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgba(0, 0, 0, 0.95); 
    display: flex; 
    justify-content: center; 
    align-items: center; 
}

.modal-image-container {
    position: relative;
    display: inline-block;
}

#modal-image { 
    max-width: 90vw; 
    max-height: 90vh; 
    width: auto;
    height: auto;
    display: block; 
    object-fit: contain; 
}

.close-btn { 
    position: absolute; 
    top: 20px; 
    right: 35px; 
    color: #fff; 
    font-size: 40px; 
    font-weight: bold; 
    transition: 0.3s; 
    cursor: pointer; 
}

/* 模态框操作按钮样式 */
.modal-actions {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 0.5rem;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

#fullscreen-modal:hover .modal-actions,
.modal-image-container:hover .modal-actions {
    opacity: 1;
    visibility: visible;
}

.modal-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.modal-action-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.modal-action-btn:active {
    transform: scale(0.95);
}

.modal-action-btn svg {
    width: 20px;
    height: 20px;
}

/* Veo3 比例选择器样式 */
.ratio-section {
    margin-top: 1rem; /* 减少上边距 */
}

.ratio-selector {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.ratio-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-bg-color);
    color: var(--text-color-primary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
    min-height: 44px;
}

.ratio-btn:hover {
    border-color: var(--gradient-mid);
    background-color: var(--input-hover-bg-color);
}

.ratio-btn.active {
    background: linear-gradient(90deg, var(--gradient-mid), var(--gradient-end));
    color: white;
    border-color: var(--gradient-mid);
}

/* 比例选择器样式 */
.ratio-section {
    margin-bottom: 1rem; /* 减少底部间距 */
}

.ratio-selector {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.ratio-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-bg-color);
    color: var(--text-color-primary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
}

.ratio-btn:hover {
    border-color: var(--gradient-mid);
    background-color: var(--input-hover-bg-color);
}

.ratio-btn.active {
    background: linear-gradient(90deg, var(--gradient-mid), var(--gradient-end));
    color: white;
    border-color: var(--gradient-mid);
}

/* 结果区域样式 */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0; /* [修改] 移除下外边距 */
}

.result-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--input-bg-color);
    color: var(--text-color-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}



/* 自定义弹窗样式 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
}

.modal-content {
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.7);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.5rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.modal-title {
    margin: 0;
    color: var(--text-color-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color-secondary);
    background: none;
    border: none;
    padding: 0;
    width: auto;
    height: auto;
    display: block;
    border-radius: 0;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--text-color-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-message {
    margin: 0;
    color: var(--text-color-primary);
    line-height: 1.5;
    font-size: 1rem;
}

.modal-footer {
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    justify-content: flex-end;
}

.modal-confirm-btn {
    background: linear-gradient(90deg, var(--gradient-mid), var(--gradient-end));
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.modal-confirm-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

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

.theme-toggle-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle-btn:hover {
    background: var(--hover-bg);
    transform: scale(1.05);
}

.theme-toggle-btn img {
    width: 20px;
    height: 20px;
    transition: all 0.3s ease;
    object-fit: contain;
}

/* 统一的图标主题切换显示逻辑 */
/* JavaScript使用dark-mode和light-mode类，CSS需要匹配 */

/* 积分图标主题切换显示逻辑 */
body.dark-mode .credits-display .icon-coin-black {
    display: inline-block;
}

body.dark-mode .credits-display .icon-coin-white {
    display: none;
}

body.light-mode .credits-display .icon-coin-black {
    display: none;
}

body.light-mode .credits-display .icon-coin-white {
    display: inline-block;
}

/* 礼品图标主题切换显示逻辑 */
body.dark-mode .nav-btn .icon-gift-black {
    display: inline-block;
}

body.dark-mode .nav-btn .icon-gift-white {
    display: none;
}

body.light-mode .nav-btn .icon-gift-black {
    display: none;
}

body.light-mode .nav-btn .icon-gift-white {
    display: inline-block;
}

/* 礼品图标样式 */
.gift-icon {
    width: 16px;
    height: 16px;
    margin-right: 6px;
    object-fit: contain;
    vertical-align: middle;
}

/* 发送图标样式 */
.send-icon {
    width: 16px;
    height: 16px;
    object-fit: contain;
}

/* 主题切换按钮显示逻辑 - 显示当前可切换到的主题图标 */
body.dark-mode .theme-toggle-btn .icon-moon {
    display: none;
}

body.dark-mode .theme-toggle-btn .icon-sun {
    display: block;
}

body.light-mode .theme-toggle-btn .icon-moon {
    display: block;
}

body.light-mode .theme-toggle-btn .icon-sun {
    display: none;
}

@media (max-width: 1024px) {
    .main-container { flex-direction: column; }
    .controls-container { max-width: none; }
    body { padding: 1rem; }
    .model-selector-container { 
        flex-direction: column; 
        border-radius: 12px; 
        box-shadow: none; 
        border: 1px solid var(--border-color);
        height: auto; /* 在小屏幕上允许自动高度 */
    }
    .model-card { border-radius: 0; }
    #theme-toggle-btn { top: 1rem; right: 1rem; }
}