/* Veo3 AI Video Generator - 现代美观CSS样式 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow-light: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --shadow-heavy: 0 20px 60px rgba(102, 126, 234, 0.25);
    --border-radius: 20px;
    --border-radius-small: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

.gradio-container {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradio-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
    z-index: 0;
}

.header-container {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e2e8f0;
    padding: 3rem 2.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-light);
    position: relative;
    z-index: 1;
    text-align: center;
    overflow: hidden;
}

.header-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.logo-text {
    font-size: 3.5rem;
    font-weight: 900;
    color: #2d3436;
    text-align: center;
    margin: 0;
    letter-spacing: -2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    filter: none;
}

@keyframes textGlow {
    from { filter: brightness(1); }
    to { filter: brightness(1.2); }
}

.subtitle {
    color: #4a5568;
    text-align: center;
    font-size: 1.1rem;
    margin-top: 1rem;
    font-weight: 500;
    text-shadow: none;
}

.main-content {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-light);
    position: relative;
    z-index: 1;
    margin-bottom: 2rem;
}

.mode-indicator {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    border-radius: 12px;
    padding: 0.8rem 1.2rem;
    margin-top: 1rem;
    text-align: center;
    font-weight: 600;
    color: #2d3436;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.gr-button-primary {
    background: var(--primary-gradient) !important;
    border: none !important;
    color: white !important;
    font-weight: 700 !important;
    font-size: 1.1rem !important;
    padding: 1.2rem 2rem !important;
    border-radius: var(--border-radius-small) !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 100%;
    margin-top: 1rem !important;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.gr-button-primary::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;
}

.gr-button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.gr-button-primary:hover::before {
    left: 100%;
}

.gr-button-primary:active {
    transform: translateY(0);
}

.gr-input, .gr-textarea {
    background: #ffffff !important;
    backdrop-filter: none !important;
    border: 2px solid #e2e8f0 !important;
    border-radius: var(--border-radius-small) !important;
    color: #1a1a1a !important;
    font-size: 1rem !important;
    padding: 1rem 1.2rem !important;
    transition: var(--transition) !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1) !important;
}

.gr-input:focus, .gr-textarea:focus {
    border-color: rgba(102, 126, 234, 0.6) !important;
    outline: none !important;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2) !important;
    transform: translateY(-1px) !important;
}

.gr-input:hover, .gr-textarea:hover {
    border-color: rgba(102, 126, 234, 0.4) !important;
    transform: translateY(-1px) !important;
}

.gr-form {
    background: transparent !important;
    border: none !important;
}

.gr-panel {
    background: #ffffff !important;
    backdrop-filter: none !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: var(--border-radius) !important;
    padding: 2rem !important;
    box-shadow: var(--shadow-light) !important;
    transition: var(--transition) !important;
}

.gr-panel:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}

.gr-box {
    border-radius: var(--border-radius-small) !important;
    border-color: rgba(255, 255, 255, 0.2) !important;
    background: rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(10px) !important;
}

label {
    color: #2d3436 !important;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.8rem !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.status-text {
    font-family: 'SF Mono', 'Monaco', monospace;
    font-size: 0.95rem;
}

.image-container {
    border-radius: 14px !important;
    overflow: hidden;
    border: 2px solid #e1e8ed !important;
    background: #fafbfc !important;
}

footer {
    display: none !important;
}

.info-box {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius-small);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #667eea;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    color: #2d3436;
    position: relative;
    overflow: hidden;
    font-weight: 500;
    line-height: 1.6;
}

.info-box strong {
    color: #1a202c;
    font-weight: 700;
    font-size: 1.1rem;
    text-shadow: none;
    filter: none;
}

.info-box a {
    color: #3182ce;
    text-decoration: underline;
    font-weight: 600;
    text-shadow: none;
    filter: none;
}

.info-box a:hover {
    color: #2c5282;
    text-decoration: underline;
}

.info-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-gradient);
}

.warning-box {
    background: #fff3cd;
    border-radius: 12px;
    padding: 1rem;
    margin-top: 1rem;
    border-left: 4px solid #ffc107;
    color: #856404;
}

/* 简化的图片展示区域 */
.image-upload-container {
    background: #ffffff !important;
    backdrop-filter: none !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: var(--border-radius) !important;
    padding: 2rem !important;
    box-shadow: var(--shadow-light) !important;
    transition: var(--transition) !important;
}

.image-upload-container:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}

/* 自定义图片展示区 - 无边框设计 */
#image-display-area {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 12px !important;
    padding: 15px 5px !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    min-height: 120px !important;
    max-height: 120px !important;
    align-items: center !important;
    background: transparent !important;
}

/* 无图片时的提示 */
.no-images {
    color: #6b7280 !important;
    font-size: 14px !important;
    text-align: center !important;
    width: 100% !important;
    padding: 20px !important;
    font-weight: 500 !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

/* 图片项容器 */
.image-item {
    position: relative !important;
    flex-shrink: 0 !important;
    width: 100px !important;
    height: 100px !important;
    border-radius: var(--border-radius-small) !important;
    overflow: hidden !important;
    cursor: pointer !important;
    transition: var(--transition) !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
    border: 2px solid rgba(255, 255, 255, 0.2) !important;
}

.image-item:hover {
    transform: scale(1.05) translateY(-2px) !important;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2) !important;
    border-color: rgba(102, 126, 234, 0.6) !important;
}

/* 图片样式 */
.image-item img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    border-radius: 8px !important;
    display: block !important;
}

/* 删除按钮 */
.image-item .delete-btn {
    position: absolute !important;
    top: -8px !important;
    right: -8px !important;
    width: 28px !important;
    height: 28px !important;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%) !important;
    color: white !important;
    border: 2px solid rgba(255, 255, 255, 0.9) !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 14px !important;
    font-weight: bold !important;
    cursor: pointer !important;
    opacity: 0 !important;
    transition: var(--transition) !important;
    z-index: 10 !important;
    line-height: 1 !important;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3) !important;
}

.image-item:hover .delete-btn {
    opacity: 1 !important;
}

.image-item .delete-btn:hover {
    background: linear-gradient(135deg, #ff5252 0%, #e53935 100%) !important;
    transform: scale(1.15) !important;
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4) !important;
}

/* 隐藏独立的删除按钮组 */
#delete-buttons-row {
    display: none !important;
}

/* 滚动条样式 */
#image-display-area::-webkit-scrollbar {
    height: 6px !important;
}

#image-display-area::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05) !important;
    border-radius: 3px !important;
}

#image-display-area::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2) !important;
    border-radius: 3px !important;
}

#image-display-area::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3) !important;
}

/* 美化的上传文件框 */
.gr-file {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%) !important;
    backdrop-filter: blur(10px) !important;
    border: 2px dashed #cbd5e0 !important;
    border-radius: var(--border-radius) !important;
    padding: 2rem !important;
    font-size: 1rem !important;
    min-height: 120px !important;
    height: auto !important;
    max-width: 100% !important;
    transition: var(--transition) !important;
    color: #4a5568 !important;
    position: relative !important;
    overflow: hidden !important;
    cursor: pointer !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
}

.gr-file::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.gr-file:hover {
    border-color: #667eea !important;
    background: linear-gradient(135deg, #ffffff 0%, #f7fafc 100%) !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.2) !important;
}

.gr-file:hover::before {
    opacity: 1;
}

.gr-file .wrap {
    min-height: 80px !important;
    padding: 0 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
    z-index: 1 !important;
    text-align: center !important;
}

.gr-file .wrap > div {
    font-size: 0.9rem !important;
    color: #4a5568 !important;
    line-height: 1.5 !important;
    font-weight: 500 !important;
    margin: 0.5rem 0 !important;
}

/* 上传图标样式 */
.gr-file .wrap::before {
    content: '📁';
    font-size: 2.5rem !important;
    margin-bottom: 0.5rem !important;
    opacity: 0.7 !important;
    transition: var(--transition) !important;
}

.gr-file:hover .wrap::before {
    content: '📤';
    opacity: 1 !important;
    transform: scale(1.1) !important;
}

/* 上传区域文字样式 */
.gr-file .wrap > div:first-of-type {
    font-size: 1.1rem !important;
    font-weight: 600 !important;
    color: #2d3748 !important;
    margin-bottom: 0.3rem !important;
}

.gr-file .wrap > div:last-of-type {
    font-size: 0.85rem !important;
    color: #718096 !important;
    font-weight: 400 !important;
}

/* 强制隐藏中文文本并显示英文文本 */
.gr-file .wrap > div {
    position: relative !important;
}

.gr-file .wrap > div::before {
    content: "Drag and drop files here" !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: transparent !important;
    color: #4a5568 !important;
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 10 !important;
}

.gr-file .wrap > div:nth-child(2)::before {
    content: "- or -" !important;
    color: #718096 !important;
    font-size: 0.8rem !important;
    font-weight: 400 !important;
}

.gr-file .wrap > div:nth-child(3)::before {
    content: "or click to upload" !important;
    color: #718096 !important;
    font-size: 0.8rem !important;
    font-weight: 400 !important;
}

/* 隐藏原始中文文本 */
.gr-file .wrap > div {
    color: transparent !important;
    font-size: 0 !important;
    line-height: 0 !important;
    height: 0 !important;
    overflow: hidden !important;
    margin: 0.5rem 0 !important;
}

.gr-file .wrap > div:nth-child(2),
.gr-file .wrap > div:nth-child(3) {
    height: auto !important;
    min-height: 20px !important;
}

/* 拖拽状态 */
.gr-file.dragover {
    border-color: #667eea !important;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%) !important;
    transform: scale(1.02) !important;
}

/* 文件已选择状态 */
.gr-file.has-file {
    border-color: #48bb78 !important;
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.1) 0%, rgba(56, 178, 172, 0.1) 100%) !important;
}

.gr-file.has-file .wrap::before {
    content: '✅';
    color: #48bb78 !important;
}

/* 输出标题样式 */
.output-title {
    margin-bottom: 1rem !important;
    margin-top: 0 !important;
}

.output-title h3 {
    margin: 0 !important;
    padding: 0 !important;
    font-size: 1.3rem !important;
    color: #2d3436 !important;
    font-weight: 700 !important;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1) !important;
}

/* 输出视频容器 */
#output-video {
    border: 2px solid #e2e8f0 !important;
    border-radius: var(--border-radius) !important;
    padding: 1.5rem !important;
    background: #ffffff !important;
    backdrop-filter: none !important;
    height: 400px !important;
    overflow: hidden !important;
    position: relative !important;
    box-shadow: var(--shadow-light) !important;
    transition: var(--transition) !important;
}

#output-video:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15) !important;
}

#output-video::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.gr-group {
    background: #ffffff !important;
    backdrop-filter: none !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: var(--border-radius) !important;
    padding: 1.5rem !important;
    margin-bottom: 1.5rem !important;
    box-shadow: var(--shadow-light) !important;
    transition: var(--transition) !important;
}

.gr-group:hover {
    transform: translateY(-1px) !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .gradio-container {
        padding: 10px;
    }
    
    .header-container {
        padding: 2rem 1.5rem;
    }
    
    .logo-text {
        font-size: 2.5rem;
    }
    
    .main-content {
        padding: 1.5rem;
    }
    
    .gr-panel {
        padding: 1.5rem;
    }
    
    .gr-group {
        padding: 1rem;
    }
}

/* 加载动画 */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.loading {
    animation: pulse 2s infinite;
}

/* 成功状态 */
.success {
    background: var(--success-gradient) !important;
    color: white !important;
}

/* 错误状态 */
.error {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%) !important;
    color: white !important;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
}

/* 随机种子按钮样式 - 在Row中显示 */
#random-seed-btn {
    background: var(--primary-gradient) !important;
    border: none !important;
    color: white !important;
    font-weight: 600 !important;
    font-size: 1.2rem !important;
    padding: 0.5rem !important;
    border-radius: var(--border-radius-small) !important;
    transition: var(--transition) !important;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3) !important;
    min-width: 50px !important;
    height: 40px !important;
    margin-top: 20px !important; /* 与输入框对齐 */
}

#random-seed-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4) !important;
}

#random-seed-btn:active {
    transform: translateY(0) !important;
}