:root {
    --primary-color: #0A0A0A;
    --accent-color: #FFD700;
    --text-on-dark: #FFFFFF;
    --text-on-accent: #0A0A0A;
    --header-offset: 110px; /* Desktop: header-top (60px) + main-nav (50px) */
}

@media (max-width: 768px) {
    :root {
        --header-offset: 110px; /* Mobile: header-top (60px) + mobile-nav-buttons (50px) */
    }
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-on-dark);
    background-color: #1a1a1a; /* Slightly lighter dark for body */
}

a {
    text-decoration: none;
    color: var(--accent-color);
}

a:hover {
    color: #ffd700;
    opacity: 0.8;
}

.header-container, .nav-container, .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px; /* Default desktop padding */
}

/* 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;
    white-space: nowrap;
    text-decoration: none; /* Remove underline */
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--text-on-accent);
    border: 2px solid var(--accent-color);
}

.btn-primary:hover {
    background-color: #e6c200;
    border-color: #e6c200;
}

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

.btn-secondary:hover {
    background-color: var(--accent-color);
    color: var(--text-on-accent);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    background-color: var(--primary-color);
    overflow-x: hidden; /* Prevent horizontal scroll from header itself */
}

.header-top {
    background-color: var(--primary-color); /* Darker top bar */
    padding: 10px 0;
    min-height: 60px; /* Ensure minimum height */
    display: flex;
    align-items: center;
}

.header-top .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px; /* Desktop container padding */
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block; /* Ensure logo is visible */
}

.desktop-nav-buttons {
    display: flex;
    gap: 15px;
}

.hamburger-menu {
    display: none; /* Hidden by default on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: relative;
    z-index: 1001;
}

.hamburger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--accent-color);
    margin-bottom: 5px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-menu span:last-child {
    margin-bottom: 0;
}

.main-nav {
    background-color: #1A1A1A; /* Slightly lighter dark for main nav, contrasting with header-top */
    padding: 10px 0;
    min-height: 50px; /* Ensure minimum height */
    display: flex; /* Desktop: visible and flex */
    align-items: center;
}

.main-nav .nav-container {
    display: flex;
    justify-content: center; /* Center nav links on desktop */
    align-items: center;
    gap: 25px;
}

.nav-link {
    color: var(--text-on-dark);
    font-weight: bold;
    font-size: 16px;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent-color);
}

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

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

.mobile-nav-buttons {
    display: none; /* Hidden by default on desktop */
}

.mobile-menu-overlay {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    transition: opacity 0.3s ease;
    opacity: 0;
}

.mobile-menu-overlay.active {
    opacity: 1;
    display: block;
}

/* Footer */
.site-footer {
    background-color: var(--primary-color);
    color: var(--text-on-dark);
    padding: 40px 0 20px;
    font-size: 14px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    padding: 0 20px;
}

.footer-column {
    flex: 1;
    min-width: 250px;
}

.footer-column h3 {
    color: var(--accent-color);
    margin-bottom: 15px;
    font-size: 18px;
}

.footer-nav ul {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 10px;
}

.footer-nav a {
    color: var(--text-on-dark);
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: var(--accent-color);
}

.copyright-section {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid #333;
    color: #888;
}

/* Mobile styles */
@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;
    }

    .header-top .header-container {
        padding: 0 15px; /* Mobile container padding */
        justify-content: flex-start; /* Adjust for hamburger menu */
        position: relative; /* For logo centering with absolute positioning */
        min-height: 50px;
        width: 100%;
        max-width: none; /* Ensure container fills width */
    }

    .hamburger-menu {
        display: block;
        order: 1;
        margin-right: auto; /* Push logo to center */
    }

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

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

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

    .logo {
        order: 2;
        font-size: 24px;
        position: absolute !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        max-width: calc(100% - 100px); /* Account for hamburger menu and potential right-side element */
    }

    .desktop-nav-buttons {
        display: none;
    }

    .mobile-nav-buttons {
        display: flex !important; /* Always show mobile buttons */
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        padding: 10px 15px; /* Adjust padding for mobile */
        overflow: hidden;
        gap: 10px;
        flex-wrap: nowrap;
        background-color: var(--primary-color); /* Same as header-top for continuity */
        border-top: 1px solid #333;
    }

    .mobile-nav-buttons .btn {
        flex: 1;
        min-width: 0;
        max-width: calc(50% - 5px);
        box-sizing: border-box;
        padding: 8px 12px;
        font-size: 13px;
        white-space: normal;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .main-nav {
        display: none; /* Hidden by default, activated by JS */
        flex-direction: column;
        position: fixed;
        top: var(--header-offset); /* Start below the header and mobile buttons */
        left: 0;
        width: 70%; /* Adjust width for mobile menu */
        height: calc(100vh - var(--header-offset));
        background-color: #1A1A1A; /* Same as desktop nav, or adjust */
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
        transform: translateX(-100%); /* Slide out from left */
        transition: transform 0.3s ease;
        overflow-y: auto;
        padding-bottom: 20px; /* Ensure content doesn't stick to bottom */
    }

    .main-nav.active {
        display: flex; /* Show the menu */
        transform: translateX(0); /* Slide in */
    }

    .main-nav .nav-container {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 15px;
        gap: 15px;
        width: 100%;
        max-width: none; /* Ensure container fills width */
    }

    .nav-link {
        width: 100%;
        padding: 10px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .nav-link::after {
        display: none; /* Hide underline animation on mobile */
    }

    .footer-container {
        flex-direction: column;
        gap: 20px;
        padding: 0 15px; /* Mobile container padding */
    }

    .footer-column {
        min-width: unset;
        width: 100%;
    }
}

/* Utility for no-scroll on body when menu is open */
body.no-scroll {
    overflow: hidden;
}

/* Payment Methods 图标容器样式 */
.payment-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}

.payment-icons img,
.payment-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Game Providers 图标容器样式 */
.game-providers-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.game-providers-icons img,
.game-provider-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Social Media 图标容器样式 */
.social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.social-media-icons img,
.social-media-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}
/* 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;
  }
}