/* style/about.css */

:root {
    --primary-color: #113B7A;
    --secondary-color: #1D5FD1;
    --text-main-color: #F3F8FF;
    --text-secondary-color: #AFC4E8;
    --card-bg-color: #10233F;
    --border-color: #244D84;
    --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
    --deep-navy: #08162B;
    --glow-color: #4FA8FF;
    --gold-color: #F2C14E;
    --divider-color: #1B3357;
}

.page-about {
    font-family: 'Arial', sans-serif;
    color: var(--text-main-color); /* Body background is dark, so text is light */
    background-color: var(--deep-navy); /* Assumed from shared.css */
    line-height: 1.6;
}

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

/* Hero Section */
.page-about__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, assuming body handles header offset */
    padding-bottom: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background-color: var(--primary-color);
}

.page-about__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 600px;
    margin-bottom: 30px;
}

.page-about__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 0 20px;
}

.page-about__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    color: var(--gold-color);
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(79, 168, 255, 0.5);
}

.page-about__hero-description {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--text-secondary-color);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-about__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* General Buttons */
.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__btn-tertiary,
.page-about__btn-link,
.page-about a[class*="button"],
.page-about a[class*="btn"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    cursor: pointer;
}

.page-about__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main-color);
    border: none;
    box-shadow: 0 4px 15px rgba(43, 115, 246, 0.4);
}

.page-about__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(43, 115, 246, 0.6);
}

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

.page-about__btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--text-main-color);
}

.page-about__btn-tertiary {
    background-color: var(--card-bg-color);
    color: var(--text-main-color);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    font-size: 0.95rem;
}

.page-about__btn-tertiary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.page-about__btn-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
}

.page-about__btn-link:hover {
    border-bottom-color: var(--secondary-color);
}

.page-about__cta-center {
    text-align: center;
    margin-top: 40px;
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Section Titles */
.page-about__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 40px;
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.4);
}

.page-about__text-block {
    font-size: 1.05rem;
    color: var(--text-secondary-color);
    text-align: center;
    margin-bottom: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Introduction Section */
.page-about__introduction-section {
    padding: 80px 0;
    background-color: var(--deep-navy);
}

.page-about__content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-about__grid-item {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.page-about__grid-title {
    font-size: 1.5rem;
    color: var(--gold-color);
    margin-bottom: 15px;
    text-align: center;
}

.page-about__grid-text {
    font-size: 1rem;
    color: var(--text-secondary-color);
    line-height: 1.7;
}

.page-about__grid-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    object-fit: cover;
    min-height: 200px;
}

/* Why Choose Section */
.page-about__why-choose-section {
    padding: 80px 0;
    background-color: var(--primary-color);
}

.page-about__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-about__feature-card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-about__feature-title {
    font-size: 1.5rem;
    color: var(--gold-color);
    margin-bottom: 15px;
    text-align: center;
}

.page-about__feature-text {
    font-size: 1rem;
    color: var(--text-secondary-color);
    line-height: 1.7;
    flex-grow: 1;
}

.page-about__feature-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    margin-top: 20px;
    object-fit: cover;
    min-height: 200px;
}

/* Games Section */
.page-about__games-section {
    padding: 80px 0;
    background-color: var(--deep-navy);
}

.page-about__games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.page-about__game-card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-about__game-title {
    font-size: 1.4rem;
    color: var(--gold-color);
    margin-bottom: 15px;
}

.page-about__game-description {
    font-size: 0.95rem;
    color: var(--text-secondary-color);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
}

.page-about__game-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    margin-top: 20px;
    object-fit: cover;
    min-height: 200px;
}

/* Policies Section */
.page-about__policies-section {
    padding: 80px 0;
    background-color: var(--primary-color);
}

.page-about__policies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-about__policy-card {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.page-about__policy-title {
    font-size: 1.4rem;
    color: var(--gold-color);
    margin-bottom: 15px;
}

.page-about__policy-text {
    font-size: 0.95rem;
    color: var(--text-secondary-color);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
}

.page-about__btn-text-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    display: inline-block; /* Ensure padding works */
}

.page-about__btn-text-link:hover {
    border-bottom-color: var(--secondary-color);
}

/* FAQ Section */
.page-about__faq-section {
    padding: 80px 0;
    background-color: var(--deep-navy);
}

.page-about__faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.page-about__faq-item {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-about__faq-item summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main-color);
    cursor: pointer;
    outline: none;
    transition: background-color 0.3s ease;
}

.page-about__faq-item summary::-webkit-details-marker {
    display: none;
}

.page-about__faq-item summary:hover {
    background-color: rgba(29, 95, 209, 0.1);
}

.page-about__faq-qtext {
    flex-grow: 1;
    color: var(--gold-color);
}

.page-about__faq-toggle {
    font-size: 1.5rem;
    line-height: 1;
    margin-left: 15px;
    color: var(--secondary-color);
}

.page-about__faq-item[open] .page-about__faq-toggle {
    content: '−';
}

.page-about__faq-answer {
    padding: 0 25px 20px;
    font-size: 1rem;
    color: var(--text-secondary-color);
    line-height: 1.6;
}

.page-about__faq-answer p {
    margin-bottom: 15px;
    color: var(--text-secondary-color);
    text-align: left;
}

/* Conclusion Section */
.page-about__conclusion-section {
    padding: 80px 0;
    background-color: var(--primary-color);
    text-align: center;
}

/* Image specific styles to ensure min-size and object-fit */
.page-about img {
    min-width: 200px;
    min-height: 200px;
    object-fit: cover;
}

/* --- Responsive Styles --- */

/* Tablet styles */
@media (max-width: 1024px) {
    .page-about__main-title {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }

    .page-about__section-title {
        font-size: clamp(1.6rem, 3.8vw, 2.5rem);
    }

    .page-about__content-grid,
    .page-about__features-grid,
    .page-about__games-grid,
    .page-about__policies-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
    }

    .page-about__hero-content {
        padding: 0 15px;
    }

    .page-about__container {
        padding: 15px;
    }

    .page-about__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .page-about__cta-buttons .page-about__btn-primary,
    .page-about__cta-buttons .page-about__btn-secondary {
        width: 100%;
        max-width: 300px; /* Limit button width on tablet */
        margin: 0 auto;
    }

    .page-about__cta-center {
        flex-direction: column;
        gap: 15px;
    }

    .page-about__cta-center .page-about__btn-primary,
    .page-about__cta-center .page-about__btn-secondary {
        width: 100%;
        max-width: 300px; /* Limit button width on tablet */
        margin: 0 auto;
    }

    .page-about__faq-item summary {
        font-size: 1.05rem;
        padding: 18px 20px;
    }

    .page-about__faq-answer {
        padding: 0 20px 18px;
    }
}

/* Mobile styles (max-width: 768px) - MUST contain all required blocks */
@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-about__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px;
    }

    .page-about__main-title {
        font-size: 2.2rem !important;
        margin-bottom: 15px;
    }

    .page-about__hero-description {
        font-size: 0.95rem !important;
        margin-bottom: 25px;
    }

    .page-about__hero-image {
        max-height: 300px;
        margin-bottom: 20px;
    }

    .page-about__cta-buttons {
        flex-direction: column !important;
        gap: 10px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    /* 通用图片与容器 */
    .page-about img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        min-width: unset !important;
        min-height: unset !important;
    }

    .page-about__container,
    .page-about__section,
    .page-about__card,
    .page-about__grid-item,
    .page-about__feature-card,
    .page-about__game-card,
    .page-about__policy-card,
    .page-about__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    /* 按钮与按钮容器 */
    .page-about__btn-primary,
    .page-about__btn-secondary,
    .page-about__btn-tertiary,
    .page-about__btn-link,
    .page-about a[class*="button"],
    .page-about a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
        margin: 0 auto; /* Center buttons if in a flex column */
    }

    .page-about__cta-center {
        flex-direction: column !important;
        gap: 10px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    /* 其他内容模块 */
    .page-about__section-title {
        font-size: 1.8rem !important;
        margin-bottom: 30px;
    }

    .page-about__text-block {
        font-size: 0.95rem !important;
        margin-bottom: 30px;
    }

    .page-about__grid-title,
    .page-about__feature-title,
    .page-about__game-title,
    .page-about__policy-title {
        font-size: 1.3rem !important;
    }

    .page-about__grid-text,
    .page-about__feature-text,
    .page-about__game-description,
    .page-about__policy-text {
        font-size: 0.9rem !important;
    }

    .page-about__introduction-section,
    .page-about__why-choose-section,
    .page-about__games-section,
    .page-about__policies-section,
    .page-about__faq-section,
    .page-about__conclusion-section {
        padding: 40px 0;
    }

    .page-about__content-grid,
    .page-about__features-grid,
    .page-about__games-grid,
    .page-about__policies-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-about__faq-item summary {
        font-size: 1rem !important;
        padding: 15px 20px;
    }

    .page-about__faq-qtext {
        line-height: 1.4;
    }

    .page-about__faq-answer {
        padding: 0 20px 15px;
    }

    .page-about__faq-list {
        padding-left: 15px;
        padding-right: 15px;
    }
}