/* shared.css */

/* --- Base Styles & Variables --- */
:root {
    --primary-gold: #FFD700; /* Gold */
    --secondary-green: #28A745; /* Green for accents/success */
    --dark-bg: #1A1A1A; /* Dark background for luxury feel */
    --light-bg: #FFFFFF;
    --text-color-light: #F0F0F0;
    --text-color-dark: #333333;
    --border-color: #333333;
    --hover-gold: #E0B800;
    --gradient-gold: linear-gradient(90deg, #FFD700 0%, #FFA500 100%);
    --font-family-primary: 'Roboto', sans-serif;
    --font-family-secondary: 'Montserrat', sans-serif;
    --header-height: 80px;
    --footer-height: auto;
    --spacing-unit: 1rem;
    --transition-speed: 0.3s ease;
}

/* Dark mode variables */
body.dark-mode {
    --dark-bg: #FFFFFF; /* Invert for dark mode */
    --light-bg: #1A1A1A;
    --text-color-light: #333333;
    --text-color-dark: #F0F0F0;
    --border-color: #CCCCCC;
}


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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--text-color-light);
    background-color: var(--dark-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden; /* Prevent horizontal scroll */
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

a {
    color: var(--primary-gold);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--hover-gold);
    text-decoration: underline;
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-secondary);
    color: var(--text-color-light);
    margin-bottom: var(--spacing-unit);
}

p {
    margin-bottom: var(--spacing-unit);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    background: var(--gradient-gold);
    color: var(--dark-bg); /* Text on gold buttons */
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    font-weight: bold;
    text-transform: uppercase;
    transition: background var(--transition-speed), transform var(--transition-speed);
    border: none;
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.btn:hover {
    background: var(--hover-gold);
    color: var(--dark-bg);
    transform: translateY(-2px);
    text-decoration: none;
}

.btn-secondary {
    background: var(--secondary-green);
    color: var(--light-bg);
    border: 1px solid var(--secondary-green);
}

.btn-secondary:hover {
    background: #218838;
    border-color: #218838;
}

.btn-outline-gold {
    background: transparent;
    color: var(--primary-gold);
    border: 1px solid var(--primary-gold);
    padding: 0.7rem 1.4rem;
}

.btn-outline-gold:hover {
    background: var(--primary-gold);
    color: var(--dark-bg);
}


/* --- Header Styles --- */
.header {
    background-color: var(--dark-bg);
    color: var(--text-color-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo img {
    height: 40px;
    margin-right: 10px;
    border-radius: 5px;
}

.main-nav ul {
    display: flex;
    gap: 1.5rem;
}

.main-nav li a {
    color: var(--text-color-light);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-speed);
}

.main-nav li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-gold);
    transition: width var(--transition-speed);
}

.main-nav li a:hover::after,
.main-nav li a.active::after {
    width: 100%;
}

.main-nav li a:hover {
    color: var(--primary-gold);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-actions .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

.user-profile, .language-select {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
    color: var(--text-color-light);
}

.user-profile img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-right: 5px;
    border: 1px solid var(--primary-gold);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    min-width: 150px;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-speed), visibility var(--transition-speed), transform var(--transition-speed);
    padding: 0.5rem 0;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-color-light);
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background-color: rgba(255, 215, 0, 0.1); /* Light gold hover */
    color: var(--primary-gold);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--primary-gold);
    cursor: pointer;
}

/* --- Marquee Section --- */
.marquee-section {
    background-color: rgba(255, 215, 0, 0.1); /* Very light gold tint */
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 215, 0, 0.2);
    overflow: hidden;
    position: relative;
    color: var(--text-color-light);
}

.marquee-container {
    display: flex;
    align-items: center;
    white-space: nowrap;
    animation: marquee-scroll 20s linear infinite;
}

.marquee-icon {
    margin-right: 1rem;
    font-size: 1.2rem;
    color: var(--primary-gold);
}

.marquee-content {
    font-size: 0.95rem;
    color: var(--text-color-light);
}

@keyframes marquee-scroll {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

/* --- Main Content Area (Conceptual) --- */
.main-content {
    flex-grow: 1;
    padding: 2rem 0;
}

/* --- Footer Styles --- */
.footer {
    background-color: var(--dark-bg);
    color: var(--text-color-light);
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    color: var(--primary-gold);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    position: relative;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 40px;
    height: 2px;
    background-color: var(--primary-gold);
}

.footer-col ul li {
    margin-bottom: 0.7rem;
}

.footer-col ul li a {
    color: var(--text-color-light);
    font-size: 0.95rem;
    transition: color var(--transition-speed);
}

.footer-col ul li a:hover {
    color: var(--primary-gold);
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--text-color-light);
    font-size: 1.5rem;
    transition: color var(--transition-speed);
}

.social-links a:hover {
    color: var(--primary-gold);
}

.payment-methods {
    margin-top: 1rem;
}

.payment-methods img {
    height: 30px;
    margin-right: 10px;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: filter var(--transition-speed), opacity var(--transition-speed);
}

.payment-methods img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    margin-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: #999;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.footer-bottom .legal-links a {
    color: #999;
    margin: 0 0.5rem;
}

.footer-bottom .legal-links a:hover {
    color: var(--primary-gold);
}

/* --- Scroll-to-top button --- */
.scroll-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--primary-gold);
    color: var(--dark-bg);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-speed), visibility var(--transition-speed), transform var(--transition-speed);
    z-index: 999;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* --- Modal Styles --- */
.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background-color: var(--dark-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed), transform var(--transition-speed);
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--primary-gold);
}

.modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header .title {
    font-size: 1.8rem;
    color: var(--primary-gold);
}

.modal-header .close-button {
    cursor: pointer;
    border: none;
    background: none;
    font-size: 2rem;
    color: var(--text-color-light);
    transition: color var(--transition-speed);
}

.modal-header .close-button:hover {
    color: var(--primary-gold);
}

.modal-body {
    font-size: 1rem;
    color: var(--text-color-light);
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

#overlay.active {
    opacity: 1;
    visibility: visible;
}

/* --- Form Styles (for modals, login, etc.) --- */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color-light);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: #2A2A2A; /* Slightly lighter than dark-bg */
    color: var(--text-color-light);
    font-size: 1rem;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus {
    border-color: var(--primary-gold);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.3);
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
}

.form-actions .btn {
    width: 100%;
}

/* --- Theme Toggle --- */
.theme-toggle {
    background: none;
    border: none;
    color: var(--primary-gold);
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: 1rem;
    transition: transform var(--transition-speed);
}

.theme-toggle:hover {
    transform: rotate(15deg);
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .main-nav ul {
        gap: 1rem;
    }
    .header-actions {
        gap: 0.5rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .logo {
        margin-bottom: 0.5rem;
    }

    .nav-toggle {
        display: block;
        position: absolute;
        right: var(--spacing-unit);
        top: 1.5rem;
    }

    .main-nav {
        width: 100%;
        order: 3; /* Push nav below logo and actions */
    }

    .main-nav ul {
        flex-direction: column;
        width: 100%;
        background-color: var(--dark-bg);
        border-top: 1px solid var(--border-color);
        padding: 1rem 0;
        display: none; /* Hidden by default for mobile */
    }

    .main-nav ul.nav-open {
        display: flex;
    }

    .main-nav li {
        width: 100%;
        text-align: center;
    }

    .main-nav li a {
        padding: 1rem 0;
        display: block;
        border-bottom: 1px solid rgba(255, 215, 0, 0.1);
    }

    .main-nav li:last-child a {
        border-bottom: none;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
        margin-top: -10px; /* Adjust spacing */
    }

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

    .footer-col h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

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

    .scroll-top-btn {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .header-actions .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    .header-actions .dropdown {
        width: 100%;
        text-align: center;
    }
    .dropdown-menu {
        right: auto;
        left: 50%;
        transform: translateX(-50%) translateY(10px);
    }
    .marquee-container {
        animation-duration: 15s; /* Faster scroll for smaller screens */
    }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.py-3 { padding-top: 3rem; padding-bottom: 3rem; }

/* --- Animations (for .animate-on-scroll) --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}
/* 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;
  }
}