/* ========== Section 3.5: 宝箱探索动画 ========== */

.section-transition {
    /* background: linear-gradient(135deg, #F0E1E1 0%, #D9C1D7 100%); */
    position: relative;
    overflow: hidden;
}

/* 宝箱探索容器 */
.treasure-journey-container {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== 阶段1: 宝箱初始状态 ========== */
.treasure-stage1 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.8s ease;
    pointer-events: auto;
}

.treasure-stage1.hidden {
    opacity: 0;
    pointer-events: none;
}

.treasure-title {
    font-size: 3rem;
    color: #51385A;
    text-align: center;
    font-weight: bold;
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

.section-transition.active .treasure-title {
    opacity: 1;
    transform: translateY(0);
}

.treasure-title .word {
    display: inline-block;
    margin-right: 0.5rem;
    opacity: 0;
    transform: translateY(20px);
}

.section-transition.active .treasure-title .word {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.section-transition.active .treasure-title .word:nth-child(1) {
    transition-delay: 0.1s;
}

.section-transition.active .treasure-title .word:nth-child(2) {
    transition-delay: 0.2s;
}

.section-transition.active .treasure-title .word:nth-child(3) {
    transition-delay: 0.3s;
}

.section-transition.active .treasure-title .word:nth-child(4) {
    transition-delay: 0.4s;
}

.treasure-box-container {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.treasure-lid {
    width: 350px;
    height: auto;
    transition: transform 1.2s cubic-bezier(0.25, 0.1, 0.25, 1);
    position: relative;
}

.treasure-body {
    width: 350px;
    height: auto;
    transition: transform 1.2s cubic-bezier(0.25, 0.1, 0.25, 1);
    position: relative;
    margin-top: -50px;
    z-index: 2;
}

.treasure-box-container.opened .treasure-lid {
    transform: translateY(-200px);
}

.treasure-box-container.opened .treasure-body {
    transform: translateY(100px);
}

/* ========== 阶段2: 内容物展示 ========== */
.treasure-stage2 {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s ease;
}

.treasure-stage2.active {
    opacity: 1;
    pointer-events: auto;
}

.treasure-items-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: 3rem 4rem;
    max-width: 1600px;
    padding: 3rem;
    align-items: end;
    justify-items: center;
}

.treasure-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0;
    transform: scale(0);
    text-decoration: none;
}

.treasure-stage2.active .treasure-item {
    animation: treasureItemAppear 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.treasure-stage2.active .treasure-item:nth-child(1) {
    animation-delay: 0.8s;
}

.treasure-stage2.active .treasure-item:nth-child(2) {
    animation-delay: 1s;
}

.treasure-stage2.active .treasure-item:nth-child(3) {
    animation-delay: 1.2s;
}

.treasure-stage2.active .treasure-item:nth-child(4) {
    animation-delay: 1.4s;
}

.treasure-stage2.active .treasure-item:nth-child(5) {
    animation-delay: 1.6s;
}

.treasure-stage2.active .treasure-item:nth-child(6) {
    animation-delay: 1.8s;
}

@keyframes treasureItemAppear {
    from {
        opacity: 0;
        transform: scale(0) translateY(150px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.treasure-item.disappear {
    animation: treasureItemDisappear 1s ease forwards !important;
    animation-delay: 0s !important;
}

@keyframes treasureItemDisappear {
    from {
        opacity: 1;
        transform: scale(1) translateY(0);
    }

    to {
        opacity: 0;
        transform: scale(0.8) translateY(-80px);
    }
}

.treasure-item img {
    width: 180px;
    height: 180px;
    object-fit: contain;
    filter: drop-shadow(0 6px 12px rgba(81, 56, 90, 0.3));
    transition: transform 0.3s ease;
}

.treasure-item:hover img {
    transform: translateY(-15px) scale(1.08);
}

.treasure-item-caption {
    margin-top: 1.5rem;
    font-size: 1.3rem;
    color: #51385A;
    font-weight: 600;
    /* background: rgba(217, 193, 215, 0.6); */
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    max-width: 500px;
    text-align: center;
    line-height: 1.4;
}

/* ========== 阶段3: 文本内容展示 ========== */
.treasure-stage3 {
    position: absolute;
    top: 120px;
    left: 0;
    width: 100%;
    height: calc(100% - 120px);
    min-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.8s ease;
    padding: 2rem;
    box-sizing: border-box;
}

.treasure-stage3.active {
    opacity: 1;
    pointer-events: auto;
}

/* 标题样式 */
.treasure-usage-title {
    font-size: 2.8rem;
    color: #51385A;
    text-align: center;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
}

.treasure-stage3.active .treasure-usage-title {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s ease 0.3s, transform 1s ease 0.3s;
}

.treasure-usage-title .word {
    display: inline-block;
    margin-right: 0.5rem;
    opacity: 0;
    transform: translateY(20px);
}

.treasure-stage3.active .treasure-usage-title .word {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.treasure-stage3.active .treasure-usage-title .word:nth-child(1) {
    transition-delay: 0.5s;
}

.treasure-stage3.active .treasure-usage-title .word:nth-child(2) {
    transition-delay: 0.6s;
}

.treasure-stage3.active .treasure-usage-title .word:nth-child(3) {
    transition-delay: 0.7s;
}

.treasure-stage3.active .treasure-usage-title .word:nth-child(4) {
    transition-delay: 0.8s;
}

/* 田字形网格布局 */
.treasure-content-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 1.5rem;
    width: 100%;
    max-width: 1400px;
    margin-top: 2rem;
    position: relative;
}

.treasure-content-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    /* border-radius: 15px;
    box-shadow: 0 8px 25px rgba(81, 56, 90, 0.3);
    border: 3px solid #B291BE; */
}

.treasure-content-item.active {
    opacity: 1;
    transform: scale(1);
}

/* 左上角:图片在右,文字在左 */
.treasure-content-item[data-index="0"] {
    flex-direction: row;
}

.treasure-content-item[data-index="0"] .treasure-content-text {
    text-align: right;
    padding-right: 1rem;
}

/* 右上角:图片在左,文字在右 */
.treasure-content-item[data-index="1"] {
    flex-direction: row-reverse;
}

.treasure-content-item[data-index="1"] .treasure-content-text {
    text-align: left;
    padding-left: 1rem;
}

/* 左下角:图片在右,文字在左 */
.treasure-content-item[data-index="2"] {
    flex-direction: row;
}

.treasure-content-item[data-index="2"] .treasure-content-text {
    text-align: right;
    padding-right: 1rem;
}

/* 右下角:图片在左,文字在右 */
.treasure-content-item[data-index="3"] {
    flex-direction: row-reverse;
}

.treasure-content-item[data-index="3"] .treasure-content-text {
    text-align: left;
    padding-left: 1rem;
}

.treasure-content-text {
    flex: 1;
    color: #51385A;
    font-family: var(--font-serif);
}

.treasure-content-text p {
    font-size: 1.5rem;
    color: #51385A;
    line-height: 1.4;
}

/* 单词动画样式 */
.treasure-content-words {
    display: block;
    line-height: 1.3;
}

.treasure-content-words .word {
    display: inline-block;
    margin-right: 0.3em;
    opacity: 0;
    transform: translateY(20px);
}

/* 当内容项激活时,单词依次出现 */
.treasure-content-item.active .treasure-content-words .word {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

/* 为每个单词设置不同的延迟 */
.treasure-content-item.active .treasure-content-words .word:nth-child(1) {
    transition-delay: 0.2s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(2) {
    transition-delay: 0.3s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(3) {
    transition-delay: 0.4s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(4) {
    transition-delay: 0.5s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(5) {
    transition-delay: 0.6s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(6) {
    transition-delay: 0.7s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(7) {
    transition-delay: 0.8s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(8) {
    transition-delay: 0.9s;
}

.treasure-content-item.active .treasure-content-words .word:nth-child(9) {
    transition-delay: 1s;
}

.treasure-content-image {
    width: auto;
    height: 200px;
    width: 300px;
    flex-shrink: 0;
}

.treasure-content-image img {
    width: 80%;
    /* height: 100%; */
    object-fit: cover;
    /* border-radius: 15px;
    box-shadow: 0 8px 25px rgba(81, 56, 90, 0.3);
    border: 3px solid #B291BE; */
    padding: 20px;
}


/* 滚动提示 */
.treasure-scroll-hint {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1rem;
    color: #745F8C;
    animation: treasureBounce 2s infinite;
    z-index: 100;
    /* background: rgba(240, 225, 225, 0.9); */
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(81, 56, 90, 0.2);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.treasure-scroll-hint.hidden {
    opacity: 0;
    pointer-events: none;
}

@keyframes treasureBounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .treasure-title {
        font-size: 2rem;
    }

    .treasure-usage-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .treasure-lid,
    .treasure-body {
        width: 250px;
    }

    .treasure-items-container {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, auto);
        gap: 2rem 1.5rem;
        padding: 1.5rem;
    }

    .treasure-item img {
        width: 100px;
        height: 100px;
    }

    .treasure-item-caption {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
        margin-top: 1rem;
    }

    .treasure-content-container {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, auto);
        gap: 2rem;
        height: auto;
    }

    .treasure-content-item {
        flex-direction: column !important;
        gap: 1rem;
    }

    .treasure-content-item .treasure-content-text {
        text-align: center !important;
        padding: 0 !important;
    }

    .treasure-content-image {
        width: auto;
        height: 150px;
        max-width: 200px;
    }

    .treasure-content-text p {
        font-size: 1.2rem;
    }
}