/* list.css */
:root {
    --primary-color: #6c5ce7;
    --primary-dark: #5649c0;
    --secondary-color: #00cec9;
    --text-color: #f5f6fa;
    --text-secondary: #b2bec3;
    --bg-color: #1e272e;
    --bg-secondary: #2d3436;
    --card-bg: #2d3436;
    --border-color: #3d3d3d;
    --success-color: #00b894;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(30, 39, 46, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.nav-logo img {
    height: 40px;
    margin-right: 10px;
    border-radius: 50%;
    object-fit: cover;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-item {
    margin-left: 30px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--secondary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* 图片堆叠展示区样式 */
.image-showcase {
    padding: 120px 0 80px;
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 60px;
    font-size: 1.1rem;
}

.stack-container {
    position: relative;
    height: 500px;
    margin: 0 auto;
    max-width: 900px;
    perspective: 1200px;
}

.stack-card {
    position: absolute;
    width: 80%;
    height: 400px;
    background-color: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.stack-card:nth-child(1) {
    top: 0;
    left: 10%;
    z-index: 3;
    transform: rotate(-5deg) translateY(0);
}

.stack-card:nth-child(2) {
    top: 20px;
    left: 5%;
    z-index: 2;
    transform: rotate(2deg) translateY(0);
}

.stack-card:nth-child(3) {
    top: 40px;
    left: 0;
    z-index: 1;
    transform: rotate(8deg) translateY(0);
}

.stack-card:hover {
    transform: scale(1.05) rotate(0) !important;
    z-index: 10;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.stack-card.active {
    transform: scale(1.1) rotate(0) !important;
    z-index: 20;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.card-image {
    height: 70%;
    background-size: cover;
    background-position: center;
    position: relative;
}

.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 20px;
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.stack-card:hover .card-overlay,
.stack-card.active .card-overlay {
    transform: translateY(0);
}

.card-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.card-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 10px;
}

.feature-tag {
    background-color: var(--primary-color);
    color: white;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
}

.stack-indicators {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.stack-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.stack-indicator.active {
    background-color: var(--secondary-color);
    transform: scale(1.2);
}

/* 功能列表样式 */
.features-list {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.version-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.tab-button {
    padding: 12px 24px;
    background-color: var(--card-bg);
    border: none;
    border-radius: 5px;
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button:hover {
    background-color: rgba(108, 92, 231, 0.2);
}

.tab-button.active {
    background-color: var(--primary-color);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.version-header {
    text-align: center;
    margin-bottom: 40px;
}

.version-header h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.version-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2rem;
    margin-right: 15px;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-color);
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.coming-soon {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.coming-soon-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.coming-soon h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.coming-soon p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-color);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 700;
}

.footer-logo img {
    height: 30px;
    margin-right: 10px;
    border-radius: 50%;
    object-fit: cover;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--secondary-color);
}

.footer-copy {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 回到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
}

#scrollTopBtn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

#scrollTopBtn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-secondary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .section-title {
        font-size: 2rem;
    }

    .stack-container {
        height: auto;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .stack-card {
        position: relative;
        width: 100%;
        height: 350px;
        transform: none !important;
        left: 0 !important;
        top: 0 !important;
    }

    .stack-card:hover,
    .stack-card.active {
        transform: scale(1.02) !important;
    }

    .version-tabs {
        flex-direction: column;
        align-items: center;
    }

    .tab-button {
        width: 100%;
        max-width: 300px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}