/**
 * style.css - 主样式文件
 */

:root {
    --accent-color: #c5a059;
    --text-main: #fff;
    --card-bg: rgba(20, 24, 28, 0.85);
    --bg-color: #f4f1ea;
    --text-color: #2c241b;
    --line-color: #5d4037;
}

body {
    margin: 0;
    overflow: hidden;
    background-color: #050505;
    font-family: 'Noto Serif SC', serif;
    color: var(--text-main);
    transition: background-color 1s ease-in-out, color 1s ease-in-out;
    -webkit-tap-highlight-color: transparent;
}

/* Loading */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent-color);
    transition: opacity 0.5s;
    pointer-events: none;
}

/* 转场遮罩 */
#transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, #fffef5 0%, #f4f1ea 100%);
    z-index: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease-in-out;
}

/* 纸质纹理 */
#paper-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
    display: none;
    background-image: none;
    background-repeat: repeat;
    opacity: 0.08;
    mix-blend-mode: multiply;
}

/* UI 层 */
#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 1s;
    padding: 20px;
    box-sizing: border-box;
}

h1 {
    color: var(--accent-color);
    font-size: 4rem;
    margin: 0 0 20px 0;
    text-shadow: 0 0 20px rgba(197, 160, 89, 0.3);
    letter-spacing: 5px;
    pointer-events: auto;
    text-align: center;
    line-height: 1.1;
}

.subtitle {
    color: #888;
    font-size: 1.2rem;
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-align: center;
}

#enter-btn {
    pointer-events: auto;
    background: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 15px 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Noto Serif SC', serif;
    text-transform: uppercase;
    letter-spacing: 3px;
}

#enter-btn:hover {
    background: var(--accent-color);
    color: #000;
    box-shadow: 0 0 30px rgba(197, 160, 89, 0.5);
}

/* 容器 */
#container-particles {
    z-index: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#container-3d {
    z-index: 1;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#container-viz {
    display: none;
    cursor: grab;
    z-index: 2;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#container-viz:active {
    cursor: grabbing;
}

/* CSS3D 卡片 */
.card-element {
    width: 240px;
    height: 300px;
    background: transparent;
    cursor: pointer;
    backface-visibility: hidden;
}

.card-content {
    width: 100%;
    height: 100%;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px;
    box-sizing: border-box;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), border-color 0.3s, box-shadow 0.3s;
}

#container-3d.interactive .card-element:hover .card-content {
    transform: scale(1.15) translateZ(20px);
    border-color: var(--accent-color);
    box-shadow: 0 0 35px rgba(197, 160, 89, 0.6);
    z-index: 1000;
}

.card-img {
    width: 100%;
    height: 162px;
    object-fit: cover;
    background: #1a1a2e;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-info {
    text-align: center;
    width: 100%;
}

.card-cn {
    font-size: 1.1rem;
    font-weight: bold;
    display: block;
    margin-bottom: 5px;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-en {
    color: #666;
    font-size: 0.8rem;
    font-style: italic;
    font-family: 'Playfair Display', serif;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-element.hero {
    width: 320px;
    height: 400px;
}

.card-element.hero .card-content {
    border: 1px solid var(--accent-color);
}

.card-element.hero .card-img {
    height: 222px;
}

.card-element.hero .card-cn {
    font-size: 1.5rem;
}

/* 顶部控制栏 */
#top-controls {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 300;
    display: none;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* 语言切换按钮 */
#lang-switch {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(93, 64, 55, 0.3);
    color: var(--line-color);
    padding: 10px 15px;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Noto Serif SC', serif;
    font-size: 14px;
    font-weight: bold;
    transition: all 0.2s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
}

#lang-switch:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(197, 160, 89, 0.3);
}

/* 搜索框 */
#search-container {
    position: relative;
}

#search-input {
    width: 240px;
    padding: 10px 15px;
    border: 1px solid rgba(93, 64, 55, 0.3);
    border-radius: 6px;
    font-size: 14px;
    font-family: 'Noto Serif SC', serif;
    background: rgba(255, 255, 255, 0.95);
    outline: none;
    transition: all 0.3s;
}

#search-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 4px 15px rgba(197, 160, 89, 0.2);
}

#search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 8px;
    margin-top: 6px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    display: none;
}

.search-result-item {
    padding: 10px 15px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    transition: background 0.2s;
}

.search-result-item:hover {
    background: #f5f5f5;
}

.result-cn {
    font-weight: bold;
    color: #2c241b;
    display: block;
}

.result-en {
    font-size: 12px;
    color: #888;
    font-style: italic;
}

/* 树控制按钮 */
.tree-btn {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(93, 64, 55, 0.3);
    color: var(--line-color);
    width: 40px;
    height: 40px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    transition: all 0.2s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
}

.tree-btn:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(197, 160, 89, 0.3);
}

.tree-btn:active {
    transform: translateY(0);
}

.tree-btn.info-icon {
    font-family: serif;
    font-style: italic;
    font-size: 22px;
}

/* 时间标尺 */
#time-axis {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, rgba(244, 241, 234, 0.98) 0%, rgba(244, 241, 234, 0.9) 70%, transparent 100%);
    z-index: 200;
    display: none;
    align-items: flex-end;
    padding: 0;
    border-top: 1px solid rgba(93, 64, 55, 0.2);
    pointer-events: none;
    transition: opacity 1s;
}

#axis-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
    pointer-events: none;
}

#time-indicator {
    position: absolute;
    top: 10px;
    background: var(--accent-color);
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    pointer-events: none;
    transform: translateX(-50%);
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    display: none;
    z-index: 201;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
    padding: 20px;
    box-sizing: border-box;
}

.modal-card {
    background: #fff;
    width: 600px;
    max-width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid #dcd6cc;
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: slideUp 0.3s ease-out;
    display: flex;
    flex-direction: column;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    right: 15px;
    top: 10px;
    cursor: pointer;
    font-size: 28px;
    color: #888;
    z-index: 10;
    padding: 5px;
    line-height: 1;
}

.modal-close:hover {
    color: #000;
}

/* 资料卡片内容 */
.specimen-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid #eee;
    background: #e8e4dc;
}

.specimen-info {
    padding: 30px;
}

.specimen-title {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    margin: 0 0 5px 0;
    color: #2c241b;
    line-height: 1.2;
}

.specimen-latin {
    font-style: italic;
    color: #666;
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    margin-bottom: 20px;
    display: block;
    border-bottom: 1px solid #ddd;
    padding-bottom: 10px;
}

.info-tag {
    display: inline-block;
    background: #e8e4dc;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    margin-right: 5px;
    color: #5d4037;
    margin-bottom: 15px;
}

.specimen-desc {
    line-height: 1.8;
    font-size: 1rem;
    color: #444;
    margin-top: 10px;
    text-align: justify;
}

/* 关于/日志 模态框内容 */
.about-content {
    padding: 40px;
}

.about-content h2 {
    color: var(--accent-color);
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}

.about-content h3 {
    margin-top: 25px;
    margin-bottom: 10px;
    color: #2c241b;
}

.about-content ul {
    padding-left: 20px;
    color: #555;
    line-height: 1.6;
}

.about-content li {
    margin-bottom: 8px;
}

.about-footer {
    margin-top: 40px;
    font-size: 0.9rem;
    color: #999;
    text-align: center;
    border-top: 1px solid #eee;
    padding-top: 20px;
}

/* D3 样式 */
.link {
    fill: none;
    stroke: var(--line-color);
    stroke-width: 1.5px;
    stroke-linecap: round;
}

.node circle {
    fill: var(--text-color);
    stroke: #fff;
    stroke-width: 2px;
    transition: all 0.3s;
}

.node circle.collapsed {
    fill: #fff;
    stroke: var(--text-color);
    stroke-width: 3px;
}

.node:hover circle {
    r: 8 !important;
    fill: #c5a059;
}

.node.highlighted circle {
    r: 12 !important;
    fill: #c5a059 !important;
    stroke: #fff;
    stroke-width: 4px;
    filter: drop-shadow(0 0 8px rgba(197, 160, 89, 0.8));
}

.node text {
    font-size: 12px;
    font-family: 'Noto Serif SC', serif;
    fill: var(--text-color);
    cursor: pointer;
    paint-order: stroke fill;
    stroke: #f4f1ea;
    stroke-width: 4px;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 1px 0 rgba(255, 255, 255, 0.5));
    transition: all 0.3s;
}

.node.highlighted text {
    font-weight: bold;
    font-size: 16px !important;
    fill: #c5a059 !important;
    stroke: #f4f1ea !important;
    stroke-width: 5px;
}

.epoch-band {
    fill-opacity: 0.25;
    shape-rendering: crispEdges;
}

.epoch-label {
    font-family: 'Playfair Display', serif;
    fill: rgba(0, 0, 0, 0.08);
    font-weight: 900;
    pointer-events: none;
    user-select: none;
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 15px;
    font-size: 40px;
    text-anchor: middle;
    dominant-baseline: middle;
}

/* 彩蛋相关样式 */
.node.ghost circle {
    fill: #333 !important;
    stroke: #555 !important;
    opacity: 0.6;
}

.node.ghost text {
    fill: #666 !important;
    font-style: italic;
    font-size: 10px !important;
}

.link.ghost {
    stroke: #444 !important;
    stroke-width: 1px !important;
    stroke-dasharray: 4, 4;
    opacity: 0.4;
}

.link.ghost.survivor-line {
    stroke: var(--accent-color) !important;
    stroke-dasharray: none;
    opacity: 0.8;
    stroke-width: 2px !important;
}

#easter-egg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 800;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 2s;
    text-align: center;
    background: radial-gradient(circle, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    padding: 20px;
}

#easter-egg-overlay.interactive {
    pointer-events: auto;
    cursor: pointer;
}

.ee-text-main {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    color: #fff;
    text-shadow: 0 0 20px rgba(197, 160, 89, 0.6);
    margin-bottom: 20px;
    transform: translateY(20px);
    transition: transform 2s ease-out, opacity 1s;
}

/* 左上角按钮组 */
#github-link {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 300;
    height: 32px;
    padding: 0 10px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(93, 64, 55, 0.3);
    border-radius: 4px;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--line-color);
    transition: all 0.3s;
    text-decoration: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
}

#github-link:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(197, 160, 89, 0.3);
}

#github-link svg {
    display: block;
    width: 18px;
    height: 18px;
}

#origin-btn {
    position: fixed;
    top: 20px;
    left: 72px;
    z-index: 300;
    height: 32px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(93, 64, 55, 0.3);
    color: var(--line-color);
    padding: 0 12px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Noto Serif SC', serif;
    font-size: 12px;
    transition: all 0.3s;
    display: none;
    white-space: nowrap;
    line-height: 30px;
    box-sizing: border-box;
}

#origin-btn:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(197, 160, 89, 0.3);
}

/* 退出按钮 */
#exit-egg-btn {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 900;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(197, 160, 89, 0.6);
    color: #c5a059;
    padding: 12px 30px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'Noto Serif SC', serif;
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 3px;
    transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 0 15px rgba(197, 160, 89, 0.1);
    backdrop-filter: blur(5px);
}

#exit-egg-btn:hover {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 0 30px rgba(197, 160, 89, 0.8), 0 0 10px rgba(255, 255, 255, 0.5);
    transform: translateY(-2px) scale(1.05);
}

#exit-egg-btn.visible {
    opacity: 1;
    pointer-events: auto;
}

/* 移动端适配 */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }

    .subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }

    #top-controls {
        top: 10px;
        right: 10px;
        gap: 6px;
        flex-wrap: wrap;
        max-width: calc(100% - 20px);
    }

    #lang-switch {
        padding: 8px 12px;
        font-size: 13px;
        height: 32px;
        line-height: 16px;
    }

    #search-container {
        order: 3;
        width: 100%;
        margin-top: 6px;
    }

    #search-input {
        width: 100%;
        box-sizing: border-box;
        font-size: 13px;
        padding: 8px 12px;
    }

    .tree-btn {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    #github-link {
        height: 32px;
        padding: 0 10px;
        top: 10px;
        left: 10px;
    }

    #github-link svg {
        width: 18px;
        height: 18px;
    }

    #origin-btn {
        height: 32px;
        line-height: 32px;
        top: 10px;
        left: 62px;
        font-size: 11px;
        padding: 0 10px;
        max-width: calc(50vw - 62px);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .modal-card {
        width: 95%;
        max-height: 85vh;
    }

    .specimen-info {
        padding: 20px;
    }

    .specimen-title {
        font-size: 1.5rem;
    }

    .ee-text-main {
        font-size: 1.5rem;
        padding: 0 15px;
    }

    #exit-egg-btn {
        bottom: 30px;
        right: 50%;
        transform: translateX(50%);
        width: 200px;
        text-align: center;
    }

    #exit-egg-btn:hover {
        transform: translateX(50%) scale(1.05);
    }
}