/* style/faq.css */
/* 页面完整样式代码 - 注意：所有选择器必须使用BEM命名规则（双下划线__连接） */

/* Root variables for consistent styling */
:root {
    --primary-color: #017439; /* Main brand green */
    --secondary-color: #FFFFFF; /* Auxiliary white */
    --register-color: #C30808; /* Red for register/login buttons */
    --login-color: #C30808; /* Red for register/login buttons */
    --button-text-color: #FFFF00; /* Yellow for register/login button text */
    --dark-bg-color: #1a1a2e; /* Body background color from shared.css */
    --light-text-color: #ffffff; /* Text color for dark backgrounds */
    --dark-text-color: #333333; /* Text color for light backgrounds */
    --card-bg-dark: rgba(255, 255, 255, 0.08); /* Slightly lighter background for cards on dark body */
    --border-color-dark: rgba(255, 255, 255, 0.15); /* Border color for elements on dark body */
}

/* Base styles for the page content */
.page-faq {
    font-family: 'Arial', sans-serif;
    color: var(--light-text-color); /* Default text color for the page, adapting to dark body background */
    line-height: 1.6;
    padding-top: var(--header-offset, 120px); /* Fixed header offset */
    background-color: var(--dark-bg-color); /* Ensure consistent background */
}

.page-faq__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Headings */
.page-faq h1,
.page-faq h2,
.page-faq h3,
.page-faq h4,
.page-faq h5,
.page-faq h6 {
    color: var(--secondary-color); /* White for headings on dark background */
    margin-bottom: 0.8em;
    line-height: 1.2;
}

.page-faq h1 {
    font-size: 2.8em;
    text-align: center;
}

.page-faq h2 {
    font-size: 2.2em;
    text-align: center;
    color: var(--primary-color); /* Brand color for section titles */
}

.page-faq h3 {
    font-size: 1.8em;
    color: var(--secondary-color);
}

.page-faq p {
    margin-bottom: 1em;
    color: var(--light-text-color);
}

/* Links */
.page-faq a {
    color: var(--primary-color); /* Brand color for links */
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-faq a:hover {
    color: var(--secondary-color); /* White on hover */
    text-decoration: underline;
}

/* Buttons */
.page-faq__btn-primary,
.page-faq__btn-secondary {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 1.1em;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent; /* Default transparent border */
    box-sizing: border-box; /* Crucial for responsive buttons */
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Allow text wrapping */
}

.page-faq__btn-primary {
    background-color: var(--register-color); /* Red for primary action */
    color: var(--button-text-color); /* Yellow text */
    border-color: var(--register-color);
}

.page-faq__btn-primary:hover {
    background-color: #A50707; /* Darker red on hover */
    border-color: #A50707;
    color: var(--secondary-color); /* White text on hover */
}

.page-faq__btn-secondary {
    background-color: transparent;
    color: var(--primary-color); /* Green text */
    border-color: var(--primary-color); /* Green border */
}

.page-faq__btn-secondary:hover {
    background-color: var(--primary-color); /* Green background on hover */
    color: var(--secondary-color); /* White text on hover */
}

/* Hero Section */
.page-faq__hero-section {
    position: relative;
    width: 100%;
    height: 600px; /* Adjust height as needed */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    margin-bottom: 40px;
}

.page-faq__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.page-faq__hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6); /* Dark overlay for text readability */
    z-index: 2;
}

.page-faq__hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 20px;
}

.page-faq__hero-title {
    font-size: 3.5em;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-faq__hero-description {
    font-size: 1.3em;
    color: var(--secondary-color);
    margin-bottom: 30px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.page-faq__hero-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Allow wrapping on small screens */
}

/* Intro Section */
.page-faq__intro-section {
    padding: 60px 0;
    background-color: var(--dark-bg-color); /* Ensure consistency */
}

.page-faq__section-title {
    margin-bottom: 30px;
}

.page-faq__section-description {
    max-width: 900px;
    margin: 0 auto 30px auto;
    text-align: center;
    font-size: 1.1em;
}

/* Accordion Section */
.page-faq__accordion-section {
    padding: 60px 0;
    background-color: var(--dark-bg-color);
}

.page-faq__faq-category {
    margin-bottom: 40px;
}

.page-faq__category-title {
    font-size: 2em;
    color: var(--primary-color); /* Brand color for category titles */
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    display: inline-block;
    width: auto;
    max-width: 100%;
}

.page-faq__faq-item {
    background-color: var(--card-bg-dark); /* Slightly lighter background for FAQ items */
    border: 1px solid var(--border-color-dark);
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
}

.page-faq__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--secondary-color);
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.05); /* Even lighter hover effect */
    transition: background-color 0.3s ease;
}

.page-faq__faq-question:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.page-faq__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    transition: transform 0.3s ease;
    color: var(--primary-color);
}

.page-faq__faq-item.active .page-faq__faq-toggle {
    transform: rotate(45deg); /* Plus to X (or rotate to minus) */
}

.page-faq__faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 25px;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--light-text-color);
}

.page-faq__faq-item.active .page-faq__faq-answer {
    max-height: 1000px !important; /* Sufficiently large to show content */
    padding: 15px 25px;
}

/* Images within content */
.page-faq__content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-faq__image-small-margin {
    margin-top: 15px;
    margin-bottom: 15px;
}

/* CTA Section */
.page-faq__cta-section {
    padding: 80px 0;
    text-align: center;
}

.page-faq__dark-section {
    background-color: var(--primary-color); /* Brand green for CTA background */
    color: var(--secondary-color); /* White text */
}

.page-faq__dark-section .page-faq__section-title {
    color: var(--secondary-color); /* White title on dark section */
}

.page-faq__dark-section .page-faq__btn-secondary {
    background-color: var(--secondary-color); /* White background for secondary button */
    color: var(--primary-color); /* Green text */
    border-color: var(--secondary-color);
}

.page-faq__dark-section .page-faq__btn-secondary:hover {
    background-color: #018843; /* Lighter green on hover */
    color: var(--secondary-color);
    border-color: #018843;
}

.page-faq__dark-section .page-faq__btn-primary {
    background-color: var(--register-color); /* Red for primary button */
    color: var(--button-text-color); /* Yellow text */
    border-color: var(--register-color);
}

.page-faq__dark-section .page-faq__btn-primary:hover {
    background-color: #A50707;
    border-color: #A50707;
    color: var(--secondary-color);
}

.page-faq__cta-buttons {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-faq__hero-title {
        font-size: 2.8em;
    }
    .page-faq__hero-description {
        font-size: 1.1em;
    }
    .page-faq h2 {
        font-size: 2em;
    }
    .page-faq h3 {
        font-size: 1.6em;
    }
}

@media (max-width: 768px) {
    .page-faq {
        font-size: 16px;
        line-height: 1.6;
        padding-top: var(--header-offset, 120px) !important; /* Ensure mobile header offset */
    }
    .page-faq__container {
        padding: 0 15px;
    }
    .page-faq__hero-section {
        height: 450px;
    }
    .page-faq__hero-title {
        font-size: 2.2em;
    }
    .page-faq__hero-description {
        font-size: 1em;
    }
    .page-faq__hero-cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .page-faq__btn-primary,
    .page-faq__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 15px;
        font-size: 1em;
    }
    .page-faq h1 {
        font-size: 2.5em;
    }
    .page-faq h2 {
        font-size: 1.8em;
    }
    .page-faq h3 {
        font-size: 1.4em;
    }
    .page-faq__faq-question {
        font-size: 1.1em;
        padding: 15px 20px;
    }
    .page-faq__faq-answer {
        padding: 0 20px;
    }
    .page-faq__faq-item.active .page-faq__faq-answer {
        padding: 10px 20px;
    }

    /* Mobile image responsiveness */
    .page-faq img {
        max-width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-faq__section,
    .page-faq__card,
    .page-faq__container,
    .page-faq__image-block {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow-x: hidden !important; /* Prevent horizontal scroll */
    }
    .page-faq__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .page-faq__hero-section {
        height: 400px;
    }
    .page-faq__hero-title {
        font-size: 1.8em;
    }
    .page-faq__hero-description {
        font-size: 0.9em;
    }
    .page-faq__btn-primary,
    .page-faq__btn-secondary {
        padding: 10px 15px;
        font-size: 0.9em;
    }
}

/* Ensure no filter on images */
.page-faq img {
    filter: none;
}