/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

/* 防止滚动闪烁的优化 - 仅应用于需要的元素 */
.navbar, .hero {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    /* 优化动画性能 */
    will-change: transform;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3b82f6;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}



/* Auth Buttons */
.auth-buttons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.github-link {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.github-link:hover {
    color: #ffffff;
}

.login-btn, .register-btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

.login-btn {
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.login-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.register-btn {
    background: #3b82f6;
    color: #ffffff;
}

.register-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
}



/* Hero Section */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    /* 优化视差效果性能 */
    will-change: transform;
    transform: translateZ(0);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-download-btn {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.hero-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.hero-trailer-btn {
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-trailer-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-video-section {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.hero-video {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16/9;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.hero-video:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(59, 130, 246, 0.3);
}

.hero-video iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
}

/* 视频高亮效果 */
.hero-video.video-highlight {
    animation: videoHighlight 3s ease-in-out;
    border-color: #3b82f6;
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

@keyframes videoHighlight {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    }
    50% { 
        transform: scale(1.02);
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
    }
}

/* Section Styles */
section {
    padding: 5rem 0;
    /* 优化渲染性能 */
    contain: layout style paint;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.section-header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
}



/* Download Section */
.download {
    background: #0a0a0a;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.download-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.download-info p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

.download-requirements ul {
    list-style: none;
    color: rgba(255, 255, 255, 0.7);
}

.download-requirements li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}

.download-requirements li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
}

.download-actions {
    text-align: center;
}

.download-btn {
    padding: 1rem 3rem;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.download-platforms {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.platform-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.platform-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* Scoreboard Section */
.scoreboard {
    background: #111111;
}





.scoreboard-table {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.scoreboard-table table {
    width: 100%;
    border-collapse: collapse;
}

.scoreboard-table th,
.scoreboard-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.scoreboard-table th {
    background: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    color: #ffffff;
}

.scoreboard-table td {
    color: rgba(255, 255, 255, 0.8);
}

.scoreboard-table tr:hover {
    background: rgba(255, 255, 255, 0.05);
}



/* Footer */
.footer {
    background: #000000;
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section.main-info h3 {
    color: #ffffff;
    margin-bottom: 1rem;
    font-size: 1.8rem;
    font-weight: 700;
}

.footer-section.main-info p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.social-link.github:hover {
    border-color: #333;
    background: rgba(51, 51, 51, 0.2);
}

.social-link.qq:hover {
    border-color: #12b7f5;
    background: rgba(18, 183, 245, 0.1);
}

.social-link svg {
    flex-shrink: 0;
}

.footer-section.sponsors h4 {
    color: #ffffff;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.sponsor-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sponsor-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}



.sponsor-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.sponsor-logo {
    font-size: 2rem;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.sponsor-item:hover .sponsor-logo {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

.sponsor-info h5 {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.sponsor-info p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-section.main-info {
        text-align: center;
    }
    
    .social-link {
        justify-content: center;
    }
    
    .sponsor-item {
        flex-direction: column;
        text-align: center;
    }
    
    .sponsor-logo {
        margin-bottom: 0.5rem;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #1a1a1a;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #ffffff;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.checkbox-group {
    margin-bottom: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.auth-submit-btn {
    width: 100%;
    padding: 0.75rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border: none;
    border-radius: 6px;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
}

.auth-submit-btn:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-1px);
}

.auth-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.auth-links {
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.auth-links a {
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.2s ease;
}

.auth-links a:hover {
    color: #60a5fa;
}

.forgot-password {
    display: block;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.switch-auth {
    margin: 0;
    font-size: 0.9rem;
}

/* User Menu Styles */
.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.profile-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.profile-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.user-info {
    font-weight: 600;
    font-size: 0.9rem;
    color: #ffffff;
}

.user-score {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.1rem;
}

.logout-btn {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* Scoreboard Enhanced Styles */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 2rem;
}

.scoreboard-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.8);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    min-width: 40px;
    font-size: 1.1rem;
}

.pagination-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-color: rgba(59, 130, 246, 0.3);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    min-width: 120px;
    text-align: center;
}



.user-position {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    text-align: center;
}



.scoreboard-table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.scoreboard-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255, 255, 255, 0.02);
}

.scoreboard-table th,
.scoreboard-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.scoreboard-table th {
    background: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    color: #ffffff;
    position: sticky;
    top: 0;
}

.scoreboard-table tr:hover {
    background: rgba(255, 255, 255, 0.05);
}



/* Loading and Error States */
.loading-state, .error-state, .empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.loading-message, .error-message, .empty-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-message p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin: 0;
}

.empty-icon, .error-icon {
    font-size: 3rem;
    opacity: 0.7;
}

.empty-message p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin: 0;
}

.error-message p {
    color: #ef4444;
    font-size: 1rem;
    margin: 0;
}

.retry-btn {
    padding: 0.75rem 1.5rem;
    background: #ef4444;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background: #dc2626;
    transform: translateY(-2px);
}













/* Download Section Enhanced Styles */
.download-hero {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.download-icon {
    color: #3b82f6;
    flex-shrink: 0;
}

.download-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.download-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.download-meta {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.download-features {
    margin-bottom: 2rem;
}

.download-features h4 {
    color: #ffffff;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.feature-text h5 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.4;
}

.system-requirements {
    margin-bottom: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.system-requirements h4 {
    color: #ffffff;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    text-align: center;
}

.requirements-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.requirement-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.requirement-label {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.requirement-value {
    color: #ffffff;
    font-weight: 600;
}

.download-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.download-btn.primary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #10b981, #059669);
    border: none;
    border-radius: 8px;
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.download-btn.primary:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
}

.download-btn.primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.download-info-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    font-weight: 500;
}

.download-info-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.download-note {
    text-align: center;
    padding: 1.5rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    max-width: 600px;
    margin: 0 auto;
}

.download-note p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

/* Animation Classes */
.animate-in {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}