/* ========================================
   NCDA - 指南针导航（简洁版�?
   ======================================== */

/* --- 导航区容�?--- */
.compass-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: var(--color-black);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.compass-section.active {
    opacity: 1;
    visibility: visible;
}

/* --- 背景图层 --- */
.compass-bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.compass-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    filter: brightness(0.75) saturate(1.15);
}

.compass-bg-img.active {
    opacity: 1;
}

/* --- 背景暗角叠加 --- */
.compass-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.65) 100%);
    z-index: 1;
    pointer-events: none;
}

/* ======== 石碑文字标签 ======== */
.monument-label {
    position: absolute;
    z-index: 15;  /* 在触发区域之上，确保可点�?*/
    cursor: pointer;
    text-align: center;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.9);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;  /* 默认不可点击，激活时才可点击 */
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    backdrop-filter: blur(4px);
}

/* 四个方位的石碑标签位�?- �?JS 动态计算（object-fit:cover 坐标映射），此处仅作回退 */
/* �?- 治沙现状 */
.monument-label[data-for="north"] {
    left: 10%;
    top: 60%;
}

/* �?- 治沙故事 */
.monument-label[data-for="east"] {
    left: 8%;
    top: 60%;
}

/* �?- 造林知识 */
.monument-label[data-for="south"] {
    left: 10%;
    top: 60%;
}

/* �?- 参与通道 */
.monument-label[data-for="west"] {
    left: 10%;
    top: 62%;
}

/* 显示状�?- 当对应背景激活时 */
.monument-label.visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    pointer-events: auto;  /* 激活时可点�?*/
    background: rgba(212, 168, 83, 0.25);  /* 金色高亮背景 */
    border-color: rgba(212, 168, 83, 0.5);
    box-shadow: 0 0 30px rgba(212, 168, 83, 0.3);
}

/* east 旧的特殊 transform 已统一，不再需要单独规�?*/

/* 非激活状�?- 完全隐藏 */
.monument-label:not(.visible) {
    opacity: 0;
    pointer-events: none;
}

/* 文字样式 */
.monument-text {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: #fff;
    letter-spacing: 0.1em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    margin-bottom: 4px;
}

.monument-sub {
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.15em;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

/* 激活标签的悬停效果 - 可点击状�?*/
.monument-label.visible:hover {
    background: rgba(212, 168, 83, 0.35);
    border-color: rgba(212, 168, 83, 0.7);
    box-shadow: 0 0 30px rgba(212, 168, 83, 0.4);
    transform: translate(-50%, -50%) scale(1.08);
}

.monument-label.visible:hover .monument-text {
    color: var(--color-sand-light);
    text-shadow: 0 0 16px rgba(212, 168, 83, 0.8);
}

/* 激活标签的点击动画 */
.monument-label.visible:active {
    transform: translate(-50%, -50%) scale(0.95);
}

/* 响应式调�?*/
@media (max-width: 768px) {
    .monument-label {
        padding: 8px 14px;
    }
    
    .monument-text {
        font-size: 1rem;
    }
    
    .monument-sub {
        font-size: 0.65rem;
    }
    /* 移动端位置由 JS 动态计算，无需静态覆�?*/
}

/* ======== 左侧石碑触发区域（小范围�?======== */
.monument-trigger-area {
    position: absolute;
    left: 0;
    top: 0;
    width: 30%;  /* 只覆盖左�?0%区域，减小触发范�?*/
    height: 100%;
    z-index: 8;
    pointer-events: auto;
}

/* 垂直分区：在左侧区域内根据Y坐标判断方位 */
.monument-trigger-zone {
    position: absolute;
    left: 0;
    width: 100%;
    height: 25%;  /* 每个区域�?/4高度 */
    pointer-events: auto;
    cursor: default;
}

.monument-trigger-zone[data-index="0"] { top: 0; }      /* �?- 左上 */
.monument-trigger-zone[data-index="1"] { top: 25%; }    /* �?- 左中�?*/
.monument-trigger-zone[data-index="2"] { top: 50%; }    /* �?- 左中�?*/
.monument-trigger-zone[data-index="3"] { top: 75%; }    /* �?- 左下 */

/* ======== 罗盘主体 ======== */
.compass-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 20;  /* 罗盘在触发区域之上，作为"安全�? */
    width: 420px;
    height: 420px;
    pointer-events: auto;  /* 确保罗盘可以接收鼠标事件，但不触发背景切�?*/
}

/* --- 中心圆环 --- */
.compass-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.25);
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
    transition: all 0.5s ease;
    pointer-events: none;
    z-index: 1;
}

.compass-center::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transition: all 0.5s ease;
}

/* hover 时中心圆高亮 */
.compass-wrapper.has-active .compass-center {
    border-color: rgba(212, 168, 83, 0.6);
    box-shadow: 0 0 40px rgba(212, 168, 83, 0.15);
}

.compass-wrapper.has-active .compass-center::after {
    background: var(--color-sand);
    box-shadow: 0 0 12px rgba(212, 168, 83, 0.5);
}

/* --- 十字连接�?--- */
.compass-line {
    position: absolute;
    background: rgba(255, 255, 255, 0.12);
    transition: background 0.4s ease;
    pointer-events: none;
}

.compass-line.vertical {
    left: 50%;
    top: 0;
    width: 1px;
    height: 100%;
    transform: translateX(-50%);
}

.compass-line.horizontal {
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
    transform: translateY(-50%);
}

/* --- 四个方位区域 --- */
/* 关键改动：每个方位占据一个象限，范围从中心圆边缘�?wrapper 边缘 */
.compass-point {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    user-select: none;
    z-index: 2;
}

/* 方位文字 */
.compass-dir {
    font-family: var(--font-display);
    font-size: 1.6rem;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.05em;
    transition: all 0.4s ease;
    line-height: 1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    font-weight: 600;
}

/* 沙地名称小标�?*/
.compass-sub {
    font-family: var(--font-secondary);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.15em;
    transition: all 0.4s ease;
    white-space: nowrap;
    margin-top: 6px;
    font-weight: 500;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

/* hover 高亮 */
.compass-point:hover .compass-dir,
.compass-point.active .compass-dir {
    color: var(--color-sand-light);
    text-shadow: 0 0 20px rgba(0, 0, 0, 0.5), 0 0 8px var(--color-sand);
    transform: scale(1.15);
}

.compass-point:hover .compass-sub,
.compass-point.active .compass-sub {
    color: rgba(255, 255, 255, 0.95);
}

/* --- 各方位定位：覆盖整个象限区域 --- */

/* 北：上方区域，水平居�?*/
.compass-point[data-dir="north"] {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: calc(50% - 50px);
    justify-content: flex-start;
    padding-top: 20px;
}

/* 南：下方区域，水平居�?*/
.compass-point[data-dir="south"] {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: calc(50% - 50px);
    justify-content: flex-end;
    padding-bottom: 20px;
}

/* 东：右侧区域，垂直居�?*/
.compass-point[data-dir="east"] {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: calc(50% - 50px);
    height: 200px;
    justify-content: center;
}

/* 西：左侧区域，垂直居�?*/
.compass-point[data-dir="west"] {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: calc(50% - 50px);
    height: 200px;
    justify-content: center;
}

/* ======== 页面标题浮层 ======== */
.compass-page-title {
    position: absolute;
    z-index: 10;
    text-align: center;
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: none;
}

.compass-page-title.visible {
    opacity: 1;
}

.compass-page-title h2 {
    font-family: var(--font-display);
    font-size: 2.4rem;
    color: rgba(255, 255, 255, 0.95);
    letter-spacing: 0.12em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    margin-bottom: 10px;
}

.compass-page-title p {
    font-family: var(--font-secondary);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.2em;
    font-weight: 500;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.5);
}

/* 标题位置：放置在指南针方位对应侧 */
.compass-page-title[data-for="north"] {
    bottom: 12%;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
}

.compass-page-title[data-for="north"].visible {
    transform: translateX(-50%) translateY(0);
}

.compass-page-title[data-for="south"] {
    top: 10%;
    left: 50%;
    transform: translateX(-50%) translateY(-12px);
}

.compass-page-title[data-for="south"].visible {
    transform: translateX(-50%) translateY(0);
}

.compass-page-title[data-for="east"] {
    top: 50%;
    left: 8%;
    transform: translateY(-50%) translateX(-12px);
    text-align: left;
}

.compass-page-title[data-for="east"].visible {
    transform: translateY(-50%) translateX(0);
}

.compass-page-title[data-for="west"] {
    top: 50%;
    right: 8%;
    transform: translateY(-50%) translateX(12px);
    text-align: right;
}

.compass-page-title[data-for="west"].visible {
    transform: translateY(-50%) translateX(0);
}

/* ======== 底部操作提示 ======== */
.compass-hint {
    position: absolute;
    bottom: 4%;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    font-family: var(--font-secondary);
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.45);
    letter-spacing: 0.25em;
    animation: hintPulse 2.5s ease-in-out infinite;
    font-weight: 500;
}

@keyframes hintPulse {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

/* ======== 响应�?======== */
@media (max-width: 768px) {
    .compass-wrapper {
        width: 300px;
        height: 300px;
    }

    .compass-center {
        width: 60px;
        height: 60px;
    }

    .compass-dir {
        font-size: 1.2rem;
    }

    .compass-sub {
        font-size: 0.6rem;
    }

    .compass-page-title h2 {
        font-size: 1.5rem;
    }

    .compass-page-title[data-for="east"],
    .compass-page-title[data-for="west"] {
        top: auto;
        bottom: 15%;
        left: 50%;
        right: auto;
        text-align: center;
        transform: translateX(-50%);
    }

    .compass-page-title[data-for="east"].visible,
    .compass-page-title[data-for="west"].visible {
        transform: translateX(-50%);
    }

    .compass-point[data-dir="north"],
    .compass-point[data-dir="south"] {
        width: 150px;
    }
}

@media (max-width: 480px) {
    .compass-wrapper {
        width: 260px;
        height: 260px;
    }

    .compass-center {
        width: 50px;
        height: 50px;
    }
}