/*
 * 项目名称: GCURobot 网站
 * 文件: style.css
 * 作者: 卓一帆
 * 创建日期: 2025年9月5日
 * 版权: © 2025 GCURobot. All rights reserved.
 * 描述: 定义网站整体样式，包括导航、英雄区、荣誉卡片和响应式设计
 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0a0a0a; /* 深色背景，仿RoboMaster */
    scroll-behavior: smooth;
    color: #fff;
    padding-top: 90px; /* 导航栏高度，按实际调整 */
}

.top-nav {
    background: rgba(0,0,0,1);
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 13px 20px;
    z-index: 100;
}

.logo {
    font-size: 1.5em;
    font-weight: bold;
    color: #fff;
}

.nav-links a {
    color: #eff2f3;
    margin: 0 15px;
    text-decoration: none;
    transition: color 0.3s, text-shadow 0.3s;
}

.nav-links a:hover {
    color: #eff2f3;
    text-shadow: 0 0 10px rgba(244, 247, 248, 0.8); /* 霓虹发光 */
}

#hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.4);
}

.hero-content {
    background: linear-gradient(120deg, rgba(255,255,255,0.85) 60%, rgba(0,196,255,0.18) 100%);
    color: #222;
    padding: 48px 32px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,196,255,0.12);
    backdrop-filter: blur(3px);
    animation: fadeIn 2s ease-in-out;
    max-width: 600px;
    margin: 0 auto;
    border: 1.5px solid rgba(0,196,255,0.18);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

section:not(#hero) {
    max-width: 1200px;
    margin: 40px auto;
    padding: 30px;
    background: linear-gradient(135deg, #1e1e1e, #333);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(240, 242, 243, 0.3);
    opacity: 1;
    transition: opacity 1s, transform 0.5s;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

.honor-grid {
    display: grid;
    gap: 50px; /* 卡片之间间隔 */
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); /* 稍微增大卡片宽度 */
}

.honor-card {
    perspective: 1000px;
    background: #222;
    border-radius: 12px;
    height: 450px; /* 增加高度以容纳更多内容 */
    overflow: hidden;
    position: relative;
 /*   box-shadow: 0 4px 16px rgba(0,196,255,0.2); */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.honor-card:hover {
    transform: translateY(-10px); /* 悬浮效果 */
/*    box-shadow: 0 8px 24px rgba(0,196,255,0.4); */
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transition: transform 0.9s cubic-bezier(0.68, -0.55, 0.265, 1.55); /* 平滑翻转动画 */
    border-radius: 12px;
    padding: 24px;
    box-sizing: border-box;
}

.card-front {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(135deg, #2a2a2a, #1e1e1e); /* 更柔和的背景渐变 */
}

.card-front h3 {
    margin: 0 0 16px 0;
    font-size: 1.5em; /* 标题稍大 */
    color: #fff;
    font-weight: bold;
    text-align: center;
    text-shadow: 0 0 8px rgba(0,196,255,0.5); /* 标题发光效果 */
}

.card-front p {
    margin: 0;
    font-size: 1em;
    color: #e0e0e0;
    line-height: 1.7;
    text-align: left;
    flex-grow: 1;
}

.card-back {
    background: linear-gradient(135deg, #333, #1e1e1e);
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #e0e0e0;
    font-size: 1em;
    line-height: 1.6;
    padding: 20px;
}

.card-back ul {
    margin: 0;
    padding: 0;
    list-style-type: none;
    text-align: left;
}

.card-back ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.card-back ul li:before {
    content: "\2714";
    position: absolute;
    left: 0;
    font-size: 1em;
}

/* 每个卡片不同背景图片 */
.robocon-bg {
    background-image: url(./material/picture/rc1.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: rgba(0,0,0,0.5);
    background-blend-mode: darken;
}

.robomaster-bg {
    background-image: url(./material/picture/rm1.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: rgba(0,0,0,0.5);
    background-blend-mode: darken;
}

.rmua-bg {
    background-image: url(./material/picture/rmua1.jpg);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: rgba(0,0,0,0.5);
    background-blend-mode: darken;
}

.honor-card:hover .card-front {
    transform: rotateY(-180deg);
}

.honor-card:hover .card-back {
    transform: rotateY(0);
}

.gallery-slider {
    display: flex;
    overflow: hidden;
    position: relative;
}

.slide {
    min-width: 100%;
    transition: transform 0.5s ease;
}

footer {
    text-align: center;
    padding: 50px;
    background-color: #343a40;
    color: white;
    position: relative;
    z-index: 10;
    margin-top: 10px;
    width: 100%;
}

.avatar-grid {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.avatar-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.avatar {
    border-radius: 50%;
    width: 50px;
    height: 50px;
}

.avatar-name {
    margin-top: 8px;
    color: #fff;
    font-size: 0.95em;
    text-align: center;
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(-10px); }
}

@media (max-width: 768px) {
    .honor-grid { grid-template-columns: 1fr; }
    .hero-content { padding: 20px; }
    .nav-links { flex-direction: column; }
    .nav-links a { margin: 10px 0; }
}

#media {
    margin-bottom: 120px;
}

.advide-inline {
    width: 100%;
    text-align: center;
    color: #fff;
    font-size: 1.35rem;
    font-family: 'Segoe UI', 'Arial', '微软雅黑', sans-serif;
    font-weight: 700;
    margin: 48px 0 24px 0;
    letter-spacing: 3px;
    opacity: 0.9;
    background: none;
    line-height: 1.8;
    text-shadow: 0 2px 16px #fff, 0 0 2px #fff;
    filter: drop-shadow(0 2px 8px #222222);
    animation: fadeIn 1.2s;
    z-index: 2;
    position: relative;
}

.intro-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto 60px auto;
}

.intro-text {
    flex: 1;
    min-width: 0;
}

.intro-img {
    flex-shrink: 0;
    text-align: center;
}

.team-image {
    max-width: 350px;
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(0,196,255,0.12);
}

@media (max-width: 768px) {
    .intro-flex {
        flex-direction: column;
        gap: 24px;
        max-width: 98vw;
        margin: 0 auto 40px auto;
    }
    .intro-img {
        width: 100%;
        text-align: center;
    }
    .team-image {
        max-width: 90vw;
        margin: 0 auto;
    }
}

.goals-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto 60px auto;
}

.goals-text {
    flex: 1;
    min-width: 0;
}

.goals-img {
    flex-shrink: 0;
    text-align: center;
}

.team-image {
    max-width: 350px;
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 4px 24px rgba(0,196,255,0.12);
}

@media (max-width: 768px) {
    .goals-flex {
        flex-direction: column;
        gap: 24px;
        max-width: 98vw;
        margin: 0 auto 40px auto;
    }
    .goals-img {
        width: 100%;
        text-align: center;
    }
    .team-image {
        max-width: 90vw;
        margin: 0 auto;
    }
}