/**
 * 专业PPT样式库 v2.0 - 整合版
 * 功能：提供真实PPT的视觉效果，与主系统无缝集成
 * 特点：16:9宽高比例，专业配色，现代化布局
 */

/* PPT制作状态指示 */
.ppt-creation-status {
    position: sticky;
    top: 0;
    background: #ffffff;
    border-radius: 8px;
    padding: 15px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    z-index: 100;
    border: 1px solid #e9ecef;
}

.creation-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
}

.creating-icon {
    font-size: 24px;
    color: #007bff;
    animation: pulse 2s infinite;
}

.creating-text {
    font-size: 16px;
    font-weight: 500;
    color: #495057;
}

.creation-complete {
    display: flex;
    align-items: center;
    gap: 12px;
}

.complete-icon {
    font-size: 24px;
    color: #28a745;
}

.complete-text {
    font-size: 16px;
    font-weight: 500;
    color: #28a745;
}

/* 专业PPT样式增强 - 适配主系统 */
.slide.cover-slide {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    justify-content: center;
    align-items: center;
}

.slide.cover-slide .slide-title {
    font-size: 48px;
    font-weight: 700;
    margin: 0 0 20px 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: slideInFromTop 1s ease-out;
    color: white;
}

.slide.cover-slide .slide-subtitle {
    font-size: 24px;
    font-weight: 300;
    margin: 0 0 40px 0;
    opacity: 0.9;
    animation: slideInFromBottom 1s ease-out 0.3s both;
    color: white;
}

.slide.cover-slide .slide-footer {
    position: absolute;
    bottom: 20px;
    right: 40px;
    font-size: 14px;
    opacity: 0.8;
    animation: fadeIn 1s ease-out 0.6s both;
    color: white;
}

/* 内容幻灯片增强 */
.slide.content-slide .slide-header {
    margin-bottom: 30px;
}

.slide .slide-title {
    font-size: 36px;
    font-weight: 600;
    margin: 0 0 20px 0;
    padding-bottom: 15px;
    
    animation: slideInFromLeft 0.8s ease-out;
}

.slide .slide-body {
    flex: 1;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.slide .main-content {
    font-size: 18px;
    line-height: 1.6;
    color: #495057;
    margin-bottom: 25px;
}

.slide .bullet-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.slide .bullet-list li {
    font-size: 16px;
    line-height: 1.8;
    color: #495057;
    padding: 8px 0;
    padding-left: 30px;
    position: relative;
    animation: slideInFromLeft 0.6s ease-out;
    animation-delay: calc(var(--i, 0) * 0.1s);
}

.slide .bullet-list li:before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #007bff;
    font-size: 12px;
    top: 8px;
}

/* 目录幻灯片增强 */
.slide.toc-slide .slide-title {
    text-align: center;
    border-bottom: none;
    margin-bottom: 40px;
}

.slide.toc-slide .toc-content {
    font-size: 18px;
    line-height: 2;
    color: #495057;
}

/* 专业动画效果 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

@keyframes slideInFromTop {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromBottom {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(15px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 专业PPT元素样式 */
.slide .highlight-text {
    background: linear-gradient(120deg, #a8edea 0%, #fed6e3 100%);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.slide .emphasis-box {
    background: rgba(0, 123, 255, 0.1);
    border-left: 4px solid #007bff;
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 0 6px 6px 0;
}

.slide .quote-block {
    font-style: italic;
    font-size: 20px;
    color: #6c757d;
    border-left: 4px solid #007bff;
    padding-left: 20px;
    margin: 25px 0;
    position: relative;
}

.slide .quote-block:before {
    content: """;
    font-size: 60px;
    color: #007bff;
    position: absolute;
    left: -15px;
    top: -20px;
    line-height: 1;
    opacity: 0.3;
}

/* 数据展示元素 */
.slide .stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(0, 123, 255, 0.05);
    border-radius: 8px;
    margin: 10px;
    flex: 1;
}

.slide .stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #007bff;
    margin-bottom: 8px;
}

.slide .stat-label {
    font-size: 14px;
    color: #6c757d;
    font-weight: 500;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .slide .slide-title {
        font-size: 32px;
    }
    
    .slide.cover-slide .slide-title {
        font-size: 40px;
    }
    
    .slide .main-content {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .slide .slide-title {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .slide.cover-slide .slide-title {
        font-size: 32px;
    }
    
    .slide.cover-slide .slide-subtitle {
        font-size: 20px;
    }
    
    .slide .main-content {
        font-size: 15px;
    }
    
    .slide .bullet-list li {
        font-size: 15px;
    }
    
    .ppt-creation-status {
        padding: 12px 15px;
        margin-bottom: 15px;
    }
}

@media (max-width: 480px) {
    .slide .slide-title {
        font-size: 24px;
        margin-bottom: 12px;
    }
    
    .slide.cover-slide .slide-title {
        font-size: 28px;
    }
    
    .slide.cover-slide .slide-subtitle {
        font-size: 18px;
    }
    
    .slide .main-content,
    .slide .bullet-list li {
        font-size: 14px;
    }
}

/* 减少动画偏好支持 */
@media (prefers-reduced-motion: reduce) {
    .slide .slide-title,
    .slide .slide-body,
    .slide .bullet-list li,
    .slide.cover-slide .slide-title,
    .slide.cover-slide .slide-subtitle,
    .slide.cover-slide .slide-footer {
        animation: none;
    }
    
    .creating-icon {
        animation: none;
    }
}

/* 翻书倒计时样式 */
.ai-countdown {
    margin-top: 15px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.countdown-text {
    font-size: 14px;
    color: #999;
}

.countdown-number {
    background: #000;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
    padding: 8px 16px;
    border-radius: 6px;
    display: inline-block;
    min-width: 50px;
    text-align: center;
    animation: flip-number 1s ease-in-out;
    transform-style: preserve-3d;
}

/* 翻书动画 */
@keyframes flip-number {
    0% {
        transform: rotateX(0deg);
    }
    50% {
        transform: rotateX(90deg);
    }
    100% {
        transform: rotateX(0deg);
    }
}