/* 日记预览模块 - 暗黑简洁九宫格 */

/* 日记区域 - 透明背景 */
.diary-section {
    background: transparent;
    margin: 30px 0;
    padding: 0;
}

/* 标题区域 - 暗黑玻璃效果 */
.diary-section .section-header {
    background: rgba(26, 26, 46, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 15px;
    padding: 20px 24px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.diary-section .section-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #ff6b9d 0%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.diary-section .section-header h2 i {
    font-size: 1.3rem;
    color: #a855f7;
    -webkit-text-fill-color: #a855f7;
}

/* ✅ 九宫格容器 - 无背景 */
.diary-grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
}

/* ✅ 单个日记卡片 - 悬浮暗黑玻璃 */
.diary-grid-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(26, 26, 46, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(168, 85, 247, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.diary-grid-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 10px 30px rgba(168, 85, 247, 0.4);
    border-color: #a855f7;
}

.diary-grid-item:active {
    transform: translateY(-5px) scale(0.98);
}

/* 背景图片 */
.diary-grid-background {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

/* 图片背景 - 使用 div */
.diary-image-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* 视频背景 */
.diary-video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

/* 空背景渐变 */
.diary-empty-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #a855f7 0%, #ff6b9d 100%);
}

/* ✅ 遮罩层 - 暗黑渐变 */
.diary-grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 15px;
    background: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.85) 100%);
    transition: all 0.3s ease;
}

.diary-grid-item:hover .diary-grid-overlay {
    background: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.95) 100%);
}

/* 无图片时的遮罩 */
.diary-grid-overlay.no-image {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.9) 0%, rgba(255, 107, 157, 0.9) 100%);
    justify-content: center;
    align-items: center;
}

/* 内容区域 */
.diary-grid-content {
    z-index: 2;
    color: #e5e7eb;
}

.diary-grid-overlay.no-image .diary-grid-content {
    text-align: center;
}

/* 标题 */
.diary-grid-title {
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 6px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: white;
}

/* 日期 */
.diary-grid-date {
    font-size: 0.75rem;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 4px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    color: rgba(255, 255, 255, 0.8);
}

.diary-grid-date i {
    font-size: 0.7rem;
}

/* 无图片时的图标 */
.diary-grid-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    opacity: 0.3;
}

.diary-grid-icon i {
    font-size: 3rem;
    color: white;
}

/* 视频播放覆盖层 */
.video-play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.video-play-overlay i {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.5));
    transition: all 0.3s ease;
}

.diary-grid-item:hover .video-play-overlay i {
    transform: scale(1.2);
    color: #a855f7;
}

/* 有视频时的遮罩 */
.diary-grid-overlay.has-video {
    background: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.8) 100%);
}

.diary-grid-item:hover .diary-grid-overlay.has-video {
    background: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.9) 100%);
}

/* 视频图标样式 */
.diary-grid-icon.video-icon {
    background: rgba(168, 85, 247, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    border-radius: 50%;
    padding: 15px;
}

.diary-grid-icon.video-icon i {
    font-size: 2rem;
}

/* 加载状态 */
.diary-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    color: #9ca3af;
    font-size: 1rem;
    gap: 10px;
}

.diary-loading i {
    font-size: 1.5rem;
    color: #a855f7;
    animation: spin 1s linear infinite;
}

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

/* 空状态 */
.diary-empty {
    text-align: center;
    padding: 80px 20px;
    color: #9ca3af;
}

.diary-empty i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: #4b5563;
}

.diary-empty p {
    margin: 0 0 20px 0;
    font-size: 1rem;
}

.retry-btn {
    padding: 10px 20px;
    border: 1px solid #a855f7;
    background: transparent;
    color: #a855f7;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    font-weight: 600;
}

.retry-btn:hover {
    background: #a855f7;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
}

/* 查看更多按钮 */
.view-more-diary {
    text-align: center;
    padding: 20px 0;
    margin-top: 20px;
}

.view-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #a855f7 0%, #ff6b9d 100%);
    color: white;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 25px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.view-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.5);
}

.view-more-btn i {
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.view-more-btn:hover i {
    transform: translateX(3px);
}

/* 分页控件 */
.diary-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    padding: 25px 0;
    margin-top: 20px;
}

.diary-page-btn {
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid rgba(168, 85, 247, 0.3);
    background: rgba(26, 26, 46, 0.8);
    backdrop-filter: blur(10px);
    color: #e5e7eb;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.diary-page-btn:hover:not(:disabled) {
    border-color: #a855f7;
    background: rgba(168, 85, 247, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.diary-page-btn.active {
    background: linear-gradient(135deg, #a855f7 0%, #ff6b9d 100%);
    color: white;
    border-color: transparent;
}

.diary-page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.diary-page-btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* ========================================
   响应式设计 - 平板
   ======================================== */
@media (max-width: 1024px) {
    .diary-grid-container {
        max-width: 100%;
        gap: 10px;
    }

    .diary-section .section-header h2 {
        font-size: 1.3rem;
    }
}

/* ========================================
   响应式设计 - 手机横屏/小平板
   ======================================== */
@media (max-width: 768px) {
    .diary-section .section-header {
        padding: 16px 20px;
        border-radius: 12px;
    }

    .diary-section .section-header h2 {
        font-size: 1.2rem;
    }

    .diary-grid-container {
        gap: 8px;
    }

    .diary-grid-item {
        border-radius: 10px;
    }

    .diary-grid-overlay {
        padding: 12px;
    }

    .diary-grid-title {
        font-size: 0.85rem;
        margin-bottom: 4px;
    }

    .diary-grid-date {
        font-size: 0.7rem;
    }

    .diary-grid-icon i {
        font-size: 2.5rem;
    }

    .video-play-overlay i {
        font-size: 2.5rem;
    }

    .diary-page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .view-more-btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }
}

/* ========================================
   响应式设计 - 手机竖屏
   ======================================== */
@media (max-width: 480px) {
    .diary-section {
        margin: 20px 0;
    }

    .diary-section .section-header {
        padding: 14px 16px;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .diary-section .section-header h2 {
        font-size: 1.1rem;
        gap: 8px;
    }

    .diary-section .section-header h2 i {
        font-size: 1rem;
    }

    .diary-grid-container {
        gap: 6px;
        grid-template-columns: repeat(3, 1fr);
    }

    .diary-grid-item {
        border-radius: 8px;
    }

    .diary-grid-overlay {
        padding: 10px;
    }

    .diary-grid-title {
        font-size: 0.75rem;
        -webkit-line-clamp: 1;
        margin-bottom: 3px;
    }

    .diary-grid-date {
        font-size: 0.65rem;
        gap: 3px;
    }

    .diary-grid-icon i {
        font-size: 2rem;
    }

    .video-play-overlay i {
        font-size: 2rem;
    }

    .diary-grid-icon.video-icon {
        padding: 10px;
    }

    .diary-grid-icon.video-icon i {
        font-size: 1.5rem;
    }

    .diary-loading {
        padding: 60px 15px;
    }

    .diary-empty {
        padding: 60px 15px;
    }

    .diary-empty i {
        font-size: 3rem;
        margin-bottom: 15px;
    }

    .diary-pagination {
        gap: 6px;
        padding: 20px 0;
    }

    .diary-page-btn {
        min-width: 32px;
        height: 32px;
        padding: 0 8px;
        font-size: 0.8rem;
    }

    .view-more-btn {
        padding: 10px 20px;
        font-size: 0.85rem;
        gap: 6px;
    }
}

/* ========================================
   特小屏幕优化 (iPhone SE 等)
   ======================================== */
@media (max-width: 375px) {
    .diary-grid-container {
        gap: 4px;
    }

    .diary-grid-title {
        font-size: 0.7rem;
    }

    .diary-grid-date {
        font-size: 0.6rem;
    }
}

/* ========================================
   点击反馈动画
   ======================================== */
.diary-grid-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(168, 85, 247, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    z-index: 10;
    pointer-events: none;
    opacity: 0;
}

.diary-grid-item:active::before {
    width: 100%;
    height: 100%;
    opacity: 1;
}

/* 确保点击区域覆盖整个卡片 */
.diary-grid-background {
    cursor: pointer;
}