/* General Reset & Base Styles */
:root {
    --primary-green: #388e3c; /* Darker green for UUU88 */
    --secondary-gold: #ffd700; /* Gold for UUU88 */
    --text-dark: #333;
    --text-light: #f0f0f0;
    --bg-dark: #222;
    --bg-light: #f9f9f9;
    --border-color: #eee;
    --font-family-primary: 'Arial', sans-serif;
    --font-family-headings: 'Georgia', serif;
    --container-width: 1200px;
}

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

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.no-scroll {
    overflow: hidden;
}

a {
    text-decoration: none;
    color: var(--primary-green);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-gold);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-headings);
    color: var(--text-dark);
    margin-bottom: 0.5em;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 15px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    border: 2px solid transparent;
}

.btn-login {
    background-color: transparent;
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.btn-login:hover {
    background-color: var(--primary-green);
    color: var(--text-light);
}

.btn-register {
    background-color: var(--secondary-gold);
    color: var(--text-dark);
    border-color: var(--secondary-gold);
    margin-left: 10px;
}

.btn-register:hover {
    background-color: #e6c200; /* Slightly darker gold */
    border-color: #e6c200;
}

/* Marquee Styles */
.marquee-section {
    background-color: var(--primary-green);
    color: var(--text-light);
    padding: 10px 0;
    overflow: hidden; /* Hide content outside the marquee */
    font-size: 0.95em;
}

.marquee-container {
    display: flex;
    align-items: center;
    gap: 15px;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
    height: 30px; /* Fixed height for marquee */
}

.marquee-icon {
    flex-shrink: 0;
    font-size: 1.5em;
    line-height: 1;
    color: var(--secondary-gold);
}

.marquee-wrap {
    flex-grow: 1;
    overflow: hidden;
    position: relative;
    height: 100%;
}

.marquee-content {
    display: inline-block;
    animation: marquee-scroll 30s linear infinite; /* Adjust speed as needed */
    padding-left: 100%; /* Start off-screen */
}

.marquee-content span {
    display: inline-block;
    margin-right: 50px; /* Space between messages */
    font-weight: bold;
}

@keyframes marquee-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100%); } /* Scroll 100% of its own width */
}

/* Pause marquee on hover */
.marquee-wrap:hover .marquee-content {
    animation-play-state: paused;
}

/* Header Styles */
.main-header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top-bar {
    background-color: var(--bg-dark);
    padding: 10px 0;
    color: var(--text-light);
    font-size: 0.9em;
}

.header-top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-selector {
    position: relative;
    display: inline-block;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9em;
    padding: 5px 10px;
    border-radius: 3px;
    transition: background-color 0.3s ease;
}

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

.lang-btn img {
    border-radius: 2px;
}

.arrow-down {
    border: solid var(--text-light);
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
    margin-left: 5px;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-dark);
    min-width: 120px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1;
    border-radius: 5px;
    overflow: hidden;
    display: none; /* Hidden by default, controlled by JS */
}

.lang-dropdown li a {
    color: var(--text-light);
    padding: 10px 15px;
    display: block;
    font-size: 0.9em;
}

.lang-dropdown li a:hover {
    background-color: var(--primary-green);
    color: var(--text-light);
}

/* .language-selector:hover .lang-dropdown { display: block; } */ /* Removed for JS control */

.auth-buttons {
    display: flex;
    gap: 10px;
}

.auth-buttons .btn {
    font-size: 0.9em;
    padding: 8px 15px;
}

.auth-buttons .btn-login {
    color: var(--secondary-gold);
    border-color: var(--secondary-gold);
}
.auth-buttons .btn-login:hover {
    background-color: var(--secondary-gold);
    color: var(--bg-dark);
}
.auth-buttons .btn-register {
    background-color: var(--primary-green);
    color: var(--text-light);
    border-color: var(--primary-green);
}
.auth-buttons .btn-register:hover {
    background-color: #2e7d32; /* Darker green */
    border-color: #2e7d32;
}


.header-main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.navbar-brand .site-logo {
    height: 50px;
    width: auto;
}

.main-navigation .nav-list {
    display: flex;
    gap: 25px;
}

.main-navigation .nav-item {
    position: relative;
}

.main-navigation .nav-link {
    color: var(--text-dark);
    font-weight: bold;
    padding: 10px 0;
    display: block;
    position: relative;
}

.main-navigation .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 3px;
    background-color: var(--primary-green);
    transition: width 0.3s ease;
}

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

.nav-item.has-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    min-width: 180px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 10;
    border-radius: 5px;
    overflow: hidden;
    display: none;
    padding: 10px 0;
}

.dropdown-menu li a {
    color: var(--text-dark);
    padding: 10px 15px;
    display: block;
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background-color: var(--bg-light);
    color: var(--primary-green);
}

.mobile-menu-toggle {
    display: none; /* Hidden on desktop */
}

.hamburger-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 20px;
    justify-content: space-between;
}

.hamburger-btn .bar {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--primary-green);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Footer Styles */
.main-footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    padding-top: 40px;
    font-size: 0.95em;
}

.footer-top {
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.footer-col h3 {
    color: var(--secondary-gold);
    margin-bottom: 15px;
    font-size: 1.2em;
}

.footer-col p {
    margin-bottom: 15px;
    color: rgba(255,255,255,0.7);
}

.footer-col ul {
    margin-bottom: 15px;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--secondary-gold);
}

.footer-logo {
    margin-bottom: 15px;
}

.social-media {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-media a {
    color: var(--text-light);
    font-size: 1.5em;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.social-media a:hover {
    background-color: var(--secondary-gold);
    color: var(--bg-dark);
}

.payment-icons, .licensing-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.payment-icons img, .licensing-icons img {
    height: 25px;
    width: auto;
    filter: grayscale(100%) brightness(150%); /* Make icons visible on dark background */
    opacity: 0.7;
    transition: opacity 0.3s ease;
}
.payment-icons img:hover, .licensing-icons img:hover {
    opacity: 1;
    filter: grayscale(0%) brightness(100%);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

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

.copyright {
    color: rgba(255,255,255,0.6);
    font-size: 0.85em;
}

.age-restriction {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 0.85em;
}

.age-restriction img {
    height: 25px;
    width: auto;
}

/* Responsive Design */
@media (max-width: 992px) {
    .main-navigation {
        display: none; /* Hide main nav on smaller screens */
    }

    .mobile-menu-toggle {
        display: block; /* Show hamburger button */
    }

    .header-main-nav .container {
        justify-content: space-between;
    }

    /* Mobile menu overlay */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.95);
        z-index: 1001;
        display: none; /* Hidden by default */
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 20px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .mobile-menu-overlay.active {
        display: flex;
    }

    .mobile-menu-overlay .close-btn {
        position: absolute;
        top: 20px;
        right: 20px;
        background: none;
        border: none;
        font-size: 2.5em;
        color: var(--text-light);
        cursor: pointer;
    }

    .mobile-menu-overlay .mobile-navigation {
        width: 100%;
        max-width: 300px;
    }

    .mobile-menu-overlay .nav-list {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

    .mobile-menu-overlay .nav-item {
        width: 100%;
    }

    .mobile-menu-overlay .nav-link {
        color: var(--text-light);
        font-size: 1.5em;
        padding: 15px 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .mobile-menu-overlay .nav-link.active {
        color: var(--secondary-gold);
    }

    .mobile-menu-overlay .nav-link::after {
        display: none; /* Remove underline animation for mobile */
    }

    .mobile-menu-overlay .nav-item:last-child .nav-link {
        border-bottom: none;
    }

    .mobile-menu-overlay .nav-item.has-dropdown .dropdown-arrow {
        margin-left: 10px;
        display: inline-block;
        border: solid var(--text-light);
        border-width: 0 2px 2px 0;
        padding: 4px;
        transform: rotate(45deg);
        transition: transform 0.3s ease;
    }

    .mobile-menu-overlay .nav-item.has-dropdown .nav-link.open .dropdown-arrow {
        transform: rotate(-135deg);
    }

    .mobile-menu-overlay .dropdown-menu {
        position: static;
        display: none; /* Controlled by JS */
        background: rgba(255,255,255,0.05);
        box-shadow: none;
        padding: 10px 0;
        margin-top: 5px;
        min-width: unset;
        border-radius: 5px;
    }

    .mobile-menu-overlay .dropdown-menu li a {
        color: rgba(255,255,255,0.7);
        font-size: 1.1em;
        padding: 8px 0;
        background: none;
        border-bottom: 1px dashed rgba(255,255,255,0.05);
    }

    .mobile-menu-overlay .dropdown-menu li:last-child a {
        border-bottom: none;
    }

    .mobile-menu-overlay .dropdown-menu li a:hover {
        background: none;
        color: var(--secondary-gold);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-col {
        margin-bottom: 20px;
    }

    .footer-col h3 {
        margin-top: 20px;
    }

    .social-media {
        justify-content: center;
    }

    .payment-icons, .licensing-icons {
        justify-content: center;
    }

    .footer-bottom .container {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .header-top-bar .container {
        flex-direction: column;
        gap: 10px;
    }
    .top-bar-content {
        width: 100%;
        justify-content: space-between;
    }
    .auth-buttons {
        width: 100%;
        justify-content: center;
    }
    .auth-buttons .btn {
        flex-grow: 1;
    }
    .marquee-content span {
        margin-right: 30px;
    }
    .marquee-icon {
        font-size: 1.2em;
    }
}

@media (max-width: 480px) {
    .header-main-nav .container {
        padding: 10px;
    }
    .navbar-brand .site-logo {
        height: 40px;
    }
    .auth-buttons .btn {
        padding: 6px 12px;
        font-size: 0.8em;
    }
    .language-selector .lang-btn {
        font-size: 0.8em;
        padding: 3px 8px;
    }
    .marquee-container {
        height: 25px;
    }
    .marquee-icon {
        font-size: 1em;
    }
    .marquee-section {
        font-size: 0.8em;
    }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}