/* --- 全局基础样式 --- */
html {
    scroll-behavior: smooth;
}

:root {
    --bg-color: #050505;
    --card-bg: #111111;
    --text-main: #f0f0f0;
    --text-muted: #888888;
    --accent: #ffffff;
    --glow: 0 0 15px rgba(255, 255, 255, 0.4);
    --font-mono: 'Fira Code', 'Courier New', monospace;
    --dal-gold: #ffd700;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
}

/* --- 导航栏 --- */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    z-index: 100;
    border-bottom: 1px solid #222;
}
.nav-content {
    display: flex;
    justify-content: center;
    gap: 40px;
}
.nav-content a {
    color: var(--text-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    transition: 0.3s;
}
.nav-content a:hover {
    color: var(--accent);
    text-shadow: var(--glow);
}

/* --- 英雄区 --- */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.hero h1 {
    font-size: 4.5rem;
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 15px;
    animation: fadeIn 1.5s ease-out;
}
.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 650px;
    animation: fadeIn 2s ease-out;
    margin-top: 20px;
}

/* --- 通用章节 --- */
section {
    padding: 100px 0;
    border-top: 1px solid #222;
    scroll-margin-top: 80px; 
}
h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 15px;
}
h2::before {
    content: '';
    display: block;
    width: 10px;
    height: 10px;
    background: var(--accent);
    box-shadow: var(--glow);
}

/* --- 教育板块 --- */
.edu-header {
    font-size: 1.5rem;
    margin-bottom: 40px;
    color: var(--text-muted);
}
.dal-text {
    color: var(--dal-gold);
    font-weight: bold;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}
.course-card {
    background: var(--card-bg);
    border: 1px solid #222;
    border-radius: 8px;
    max-width: 700px;
    height: 150px;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}
.course-card:hover {
    height: 480px;
    border-color: var(--accent);
    box-shadow: var(--glow);
    transform: scale(1.02);
    align-items: flex-start;
    padding: 40px;
}
.course-front {
    position: absolute;
    text-align: center;
    transition: all 0.3s ease;
}
.course-front .icon { font-size: 3rem; margin-bottom: 10px; }
.course-front .title { font-size: 1.2rem; text-transform: uppercase; letter-spacing: 2px; color: var(--accent); }
.course-front .hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 10px; opacity: 0.6; }
.course-card:hover .course-front { opacity: 0; transform: scale(0.8); pointer-events: none; }
.course-timeline {
    width: 100%;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.4s ease 0.1s;
    pointer-events: none;
}
.course-card:hover .course-timeline { opacity: 1; transform: translateY(0); pointer-events: auto; }
.timeline-item { border-left: 2px solid #333; padding-left: 25px; position: relative; margin-bottom: 25px; }
.timeline-item::before { content: ''; position: absolute; left: -6px; top: 5px; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: var(--glow); }
.term { color: var(--accent); font-size: 1.1rem; font-weight: bold; margin-bottom: 5px; letter-spacing: 1px; }
.term-progress { color: var(--dal-gold); font-size: 0.8rem; text-transform: uppercase; margin-left: 10px; letter-spacing: 1px; }
.courses { color: var(--text-muted); font-family: var(--font-mono); font-size: 0.95rem; line-height: 1.8; }

/* --- 技能板块 --- */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}
.skill-group h3 {
    margin-bottom: 20px;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 1rem;
}
.skill-item {
    margin-bottom: 15px;
    padding: 15px;
    background: var(--card-bg);
    border: 1px solid #222;
    transition: 0.3s;
}
.skill-item:hover {
    border-color: var(--accent);
    box-shadow: var(--glow);
    transform: translateX(10px);
}
.pc-builder-item {
    border: 1.5px solid var(--dal-gold) !important;
    cursor: pointer;
    position: relative;
}
.pc-builder-item::after {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.6rem;
    color: var(--dal-gold);
    letter-spacing: 1px;
    opacity: 0.5;
    transition: 0.3s;
}

/* --- 兴趣板块卡片修正 --- */
.hobby-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    perspective: 1000px;
}
.hobby-card {
    background: var(--card-bg);
    border: 1px solid #222;
    height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: transform 0.1s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    transform-style: preserve-3d;
    cursor: pointer;
}
.hobby-card:hover { border-color: var(--accent); box-shadow: var(--glow); }
.hobby-icon { font-size: 3rem; margin-bottom: 15px; transform: translateZ(30px); }
.hobby-title { font-size: 1.2rem; transform: translateZ(20px); text-transform: uppercase; letter-spacing: 1px; }
.click-hint { font-size: 0.7rem; color: var(--text-muted); margin-top: 15px; transform: translateZ(15px); opacity: 0.5; }

/* --- 互动猫板块 --- */
.kiri-container {
    text-align: center;
    background: var(--card-bg);
    padding: 60px 20px;
    border: 1px solid #222;
    border-radius: 10px;
    transition: 0.3s;
}
.kiri-wrapper { position: relative; display: inline-block; margin-bottom: 20px; transition: 0.2s; will-change: transform; }
.cat-image { width: 300px; height: 300px; border-radius: 50%; border: 2px solid var(--accent); box-shadow: var(--glow); display: block; }
#anger-emoji { position: absolute; top: -10px; left: 10px; font-size: 3.5rem; display: none; pointer-events: none; filter: drop-shadow(0 0 10px rgba(255, 0, 0, 0.6)); z-index: 10; }
#pet-btn { background: transparent; color: var(--accent); border: 1px solid var(--accent); padding: 10px 30px; font-size: 1.2rem; text-transform: uppercase; letter-spacing: 2px; margin-top: 20px; cursor: pointer; transition: 0.3s; }
#pet-btn:hover { background: var(--accent); color: var(--bg-color); box-shadow: var(--glow); }
#pet-status { margin-top: 15px; color: var(--text-muted); font-family: monospace; height: 20px; }

/* --- 重点修改：丝滑 Modal 动效 --- */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
    /* 背景层透明度动画 */
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal.show {
    opacity: 1;
}
.modal-content {
    background-color: var(--card-bg);
    border: 1px solid var(--accent);
    box-shadow: var(--glow);
    padding: 40px;
    width: 90%;
    max-width: 600px;
    border-radius: 4px;
    position: relative;
    /* 缩放动画初始状态 */
    transform: scale(0.7);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}
.modal.show .modal-content {
    transform: scale(1);
    opacity: 1;
}
.close-btn { color: var(--text-muted); position: absolute; top: 15px; right: 20px; font-size: 28px; font-weight: bold; cursor: pointer; transition: 0.3s; }
.close-btn:hover { color: var(--accent); }

/* --- 幻灯片 --- */
.slideshow-container {
    position: relative;
    width: 100%;
    margin-top: 20px;
    overflow: hidden;
    border-radius: 4px;
    padding-top: 66.66%; 
}
.mySlides {
    display: none;
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}
.mySlides img {
    max-width: 100%; max-height: 100%;
    width: auto; height: auto;
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 6px; 
}
.prev, .next {
    z-index: 11;
    cursor: pointer;
    position: absolute;
    top: 50%;
    padding: 16px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.6s ease;
    user-select: none;
    background-color: rgba(0,0,0,0.5);
    transform: translateY(-50%);
}
.next { right: 0; }
.prev { left: 0; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(40px); transition: 0.8s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }
footer { text-align: center; padding: 40px 0; color: var(--text-muted); font-size: 0.8rem; letter-spacing: 2px; text-transform: uppercase; }