/* Custom styles */
:root {
    --primary-color: #8B5CF6; /* 紫色 */
    --secondary-color: #6D28D9; /* 深紫色 */
    --background-color: #1F2937; /* 深灰色背景 */
    --text-color: #F9FAFB; /* 浅色文本 */
    --accent-color: #C4B5FD; /* 浅紫色强调色 */
    --card-bg: rgba(31, 41, 55, 0.8); /* 半透明深灰色 */
    --card-border: #8B5CF6; /* 紫色边框 */
    --transition-speed: 0.3s;
    --header-height: 4rem;
}

/* Base styles */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Game section */
.game-section {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    background: #000000; /* 修改为黑色背景 */
    overflow: hidden;
    border: none; /* 删除紫色边框 */
    border-radius: 0; /* 删除圆角 */
    margin: 0; /* 删除外边距 */
}

.game-iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 0; /* 删除圆角 */
    box-shadow: none; /* 删除阴影 */
    transition: transform var(--transition-speed);
}

.game-iframe:hover {
    transform: scale(1.02);
}

/* Responsive design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .mobile-menu {
        display: block;
    }

    .language-selector {
        top: auto;
        bottom: 1rem;
        right: 1rem;
    }

    .game-controls {
        bottom: 4rem;
    }

    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .game-section {
        height: 50vh;
        min-height: 400px;
    }

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

    .screenshot-gallery {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Section animations */
section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    margin: 2rem 0;
    padding: 2rem;
    border-radius: 12px;
    background-color: rgba(31, 41, 55, 0.5);
    border: none; /* 删除首页横线 */
}

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

/* Language selector */
.language-selector {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 50;
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 8px;
    backdrop-filter: blur(8px);
    transition: transform var(--transition-speed);
    border: 1px solid var(--card-border);
}

.language-selector:hover {
    transform: translateY(-2px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: 1px solid var(--card-border);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Footer */
footer {
    background: var(--card-bg);
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--card-border); /* 保留页脚横线 */
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 1rem;
}

/* Feature cards */
.feature-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    transition: transform var(--transition-speed);
    backdrop-filter: blur(8px);
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 6px rgba(139, 92, 246, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(139, 92, 246, 0.2);
}

/* Loading animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Game controls */
.game-controls {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.fullscreen-btn {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.fullscreen-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Screenshot gallery */
.screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 2rem 0;
}

.screenshot-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-speed);
    border: 1px solid var(--card-border);
}

.screenshot-item:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 12px rgba(139, 92, 246, 0.2);
}

.screenshot-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Player reviews */
.review-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1rem 0;
    transition: transform var(--transition-speed);
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 6px rgba(139, 92, 246, 0.1);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(139, 92, 246, 0.2);
}

/* Development team */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.team-member {
    text-align: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 12px;
    transition: transform var(--transition-speed);
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 6px rgba(139, 92, 246, 0.1);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(139, 92, 246, 0.2);
}

.team-member img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin-bottom: 1rem;
    object-fit: cover;
    border: 2px solid var(--card-border);
}

/* Call to action section */
.cta-section {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    margin: 4rem 0;
    border-radius: 12px;
    border: 1px solid var(--card-border);
}

.cta-button {
    font-size: 1.25rem;
    padding: 1rem 2rem;
    margin-top: 2rem;
    animation: pulse 2s infinite;
    border: 1px solid var(--card-border);
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.blur-bg {
    backdrop-filter: blur(8px);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

/* Print styles */
@media print {
    .game-section,
    .language-selector,
    .game-controls {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 100;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--background-color);
    z-index: 99;
    padding: 5rem 2rem 2rem;
    transform: translateX(-100%);
    transition: transform var(--transition-speed);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu a {
    display: block;
    color: var(--text-color);
    text-decoration: none;
    padding: 1rem 0;
    font-size: 1.25rem;
    border-bottom: 1px solid var(--card-border);
}

.mobile-menu a:hover {
    color: var(--primary-color);
}

/* Header */
header {
    background: var(--background-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 40;
    border-bottom: 1px solid var(--card-border); /* 保留页眉横线 */
}