/* style/mobile-app.css */

:root {
    --primary-color: #FFD700; /* Gold */
    --secondary-color: #8B0000; /* Dark Red */
    --text-light: #ffffff;
    --text-dark: #333333;
    --bg-dark-1: #0d0d0d; /* Assuming shared.css defines a dark background */
    --bg-dark-2: #1a1a1a;
    --card-bg: rgba(255, 255, 255, 0.1);
    --border-color: rgba(255, 255, 255, 0.2);
}

.page-mobile-app {
    color: var(--text-light); /* Dark background, so light text */
    background-color: var(--bg-dark-1); /* Inherit from body if not explicitly set */
    padding-top: 100px; /* Adjust for fixed header on desktop */
}

.page-mobile-app__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Hero Section */
.page-mobile-app__hero-section {
    text-align: center;
    padding: 60px 20px;
    padding-top: 10px; /* Desktop adjustment for fixed header */
    background: linear-gradient(135deg, var(--bg-dark-2) 0%, #000000 100%);
    border-bottom: 2px solid var(--primary-color);
}

.page-mobile-app__hero-title {
    font-size: 3.2em;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.page-mobile-app__hero-description {
    font-size: 1.2em;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 40px auto;
    line-height: 1.6;
}

.page-mobile-app__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.page-mobile-app__cta-button {
    display: inline-block;
    padding: 15px 35px;
    background: var(--primary-color);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
    border: none;
    cursor: pointer;
    white-space: normal;
    word-wrap: break-word;
    max-width: 100%;
    box-sizing: border-box;
}

.page-mobile-app__cta-button:hover {
    background: #e6c200;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.6);
}

.page-mobile-app__cta-button--register {
    background: var(--secondary-color);
    color: var(--text-light);
    box-shadow: 0 5px 15px rgba(139, 0, 0, 0.4);
}

.page-mobile-app__cta-button--register:hover {
    background: #a30000;
    box-shadow: 0 8px 20px rgba(139, 0, 0, 0.6);
}

.page-mobile-app__hero-image {
    max-width: 800px;
    width: 100%;
    height: auto;
    margin-top: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* General Section Styles */
.page-mobile-app__section-title {
    font-size: 2.5em;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    padding-top: 40px;
    text-shadow: 0 0 8px rgba(255, 215, 0, 0.3);
}

.page-mobile-app__section-description {
    font-size: 1.1em;
    color: var(--text-light);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 50px auto;
    line-height: 1.6;
    opacity: 0.9;
}

/* Benefits Section */
.page-mobile-app__benefits-section {
    padding: 80px 20px;
    background-color: var(--bg-dark-1);
}

.page-mobile-app__benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-mobile-app__benefit-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-mobile-app__benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-mobile-app__benefit-icon {
    width: 120px; /* Increased size for content image, not icon */
    height: 120px;
    margin-bottom: 20px;
    object-fit: contain;
}

.page-mobile-app__benefit-title {
    font-size: 1.6em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-mobile-app__benefit-text {
    font-size: 1em;
    color: var(--text-light);
    line-height: 1.6;
}

/* Download Guide Section */
.page-mobile-app__download-guide-section {
    padding: 80px 20px;
    background-color: var(--bg-dark-2);
}

.page-mobile-app__guide-platform {
    margin-bottom: 60px;
}

.page-mobile-app__guide-subtitle {
    font-size: 2em;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    padding-top: 20px;
}

.page-mobile-app__guide-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.page-mobile-app__guide-steps {
    flex: 1;
    min-width: 300px;
    max-width: 600px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-mobile-app__guide-steps ol {
    list-style: decimal;
    padding-left: 25px;
    margin-bottom: 20px;
}

.page-mobile-app__guide-steps li {
    font-size: 1.05em;
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.6;
}

.page-mobile-app__guide-steps strong {
    color: var(--primary-color);
}

.page-mobile-app__qr-code-wrapper {
    text-align: center;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-mobile-app__qr-code {
    width: 250px;
    height: 250px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 8px;
}

.page-mobile-app__qr-label {
    font-size: 1em;
    color: var(--text-light);
    font-weight: bold;
}

.page-mobile-app__cta-button--small {
    padding: 10px 25px;
    font-size: 0.9em;
    margin-top: 20px;
}

/* Features Section */
.page-mobile-app__features-section {
    padding: 80px 20px;
    background-color: var(--bg-dark-1);
}

.page-mobile-app__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-mobile-app__feature-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-mobile-app__feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-mobile-app__feature-icon {
    width: 120px; /* Increased size for content image, not icon */
    height: 120px;
    margin-bottom: 20px;
    object-fit: contain;
}

.page-mobile-app__feature-title {
    font-size: 1.6em;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-mobile-app__feature-text {
    font-size: 1em;
    color: var(--text-light);
    line-height: 1.6;
}

/* FAQ Section */
.page-mobile-app__faq-section {
    padding: 80px 20px;
    background-color: var(--bg-dark-2);
}

.page-mobile-app__faq-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
}

/* FAQ容器样式 */
.page-mobile-app__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
}

/* FAQ默认状态 - 答案隐藏 */
.page-mobile-app__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 15px;
  opacity: 0;
  color: var(--text-light);
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-mobile-app__faq-item.active .page-mobile-app__faq-answer {
  max-height: 2000px !important; /* 🚨 使用!important确保优先级，值足够大以容纳任何内容 */
  padding: 20px 15px !important;
  opacity: 1;
  background: rgba(255, 255, 255, 0.05); /* Slightly lighter background for answer */
  border-radius: 0 0 5px 5px;
}

/* 问题样式 */
.page-mobile-app__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
  color: var(--text-light);
}

.page-mobile-app__faq-question:hover {
  background: rgba(255, 255, 255, 0.12);
}

.page-mobile-app__faq-question:active {
  background: rgba(255, 255, 255, 0.15);
}

/* 问题标题样式 */
.page-mobile-app__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--primary-color);
}

/* 切换图标 */
.page-mobile-app__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-mobile-app__faq-item.active .page-mobile-app__faq-toggle {
  color: var(--text-light);
  transform: rotate(45deg); /* Optional: Rotate for 'x' effect */
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-mobile-app__hero-title {
        font-size: 2.8em;
    }
    .page-mobile-app__section-title {
        font-size: 2em;
    }
}

@media (max-width: 768px) {
    .page-mobile-app {
        padding-top: 80px; /* Mobile adjustment for fixed header */
    }
    .page-mobile-app__hero-section {
        padding: 40px 15px;
        padding-top: 10px !important; /* Mobile adjustment for fixed header */
    }
    .page-mobile-app__hero-title {
        font-size: 2.2em;
    }
    .page-mobile-app__hero-description {
        font-size: 1em;
    }
    .page-mobile-app__cta-buttons {
        flex-direction: column;
        gap: 15px;
        padding: 0 15px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    .page-mobile-app__cta-button {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 25px;
        font-size: 1em;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-mobile-app__hero-image {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-mobile-app__benefits-section, 
    .page-mobile-app__download-guide-section, 
    .page-mobile-app__features-section, 
    .page-mobile-app__faq-section {
        padding: 50px 15px;
    }

    .page-mobile-app__section-title {
        font-size: 1.8em;
        padding-top: 20px;
    }
    .page-mobile-app__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-mobile-app__benefits-grid, .page-mobile-app__features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-mobile-app__benefit-card, .page-mobile-app__feature-item {
        padding: 25px;
    }

    .page-mobile-app__benefit-icon, .page-mobile-app__feature-icon {
        width: 90px;
        height: 90px;
    }

    .page-mobile-app__benefit-title, .page-mobile-app__feature-title {
        font-size: 1.4em;
    }
    
    .page-mobile-app__guide-platform {
        margin-bottom: 40px;
    }

    .page-mobile-app__guide-subtitle {
        font-size: 1.6em;
        margin-bottom: 20px;
    }

    .page-mobile-app__guide-content {
        flex-direction: column;
        gap: 30px;
    }

    .page-mobile-app__guide-steps {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 25px;
    }

    .page-mobile-app__guide-steps ol {
        padding-left: 20px;
    }

    .page-mobile-app__guide-steps li {
        font-size: 0.95em;
        margin-bottom: 10px;
    }

    .page-mobile-app__qr-code-wrapper {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 15px;
    }

    .page-mobile-app__qr-code {
        width: 200px;
        height: 200px;
    }

    .page-mobile-app__qr-label {
        font-size: 0.9em;
    }
    
    .page-mobile-app__faq-question {
        padding: 15px;
        flex-wrap: wrap;
    }
    
    .page-mobile-app__faq-question h3 {
        font-size: 1em;
        margin-bottom: 0;
        width: calc(100% - 40px);
    }
    
    .page-mobile-app__faq-toggle {
        margin-left: 10px;
        width: 24px;
        height: 24px;
        font-size: 20px;
    }
    
    .page-mobile-app__faq-answer {
        padding: 0 15px;
    }
    
    .page-mobile-app__faq-item.active .page-mobile-app__faq-answer {
        padding: 15px !important;
    }
    .page-mobile-app img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-mobile-app__section, .page-mobile-app__card, .page-mobile-app__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-mobile-app__video-section {
        padding-top: 10px !important;
    }
}

@media (max-width: 480px) {
    .page-mobile-app__hero-title {
        font-size: 1.8em;
    }
    .page-mobile-app__section-title {
        font-size: 1.6em;
    }
    .page-mobile-app__cta-button {
        font-size: 0.95em;
        padding: 10px 20px;
    }
    .page-mobile-app__benefit-title, .page-mobile-app__feature-title {
        font-size: 1.2em;
    }
    .page-mobile-app__benefit-icon, .page-mobile-app__feature-icon {
        width: 70px;
        height: 70px;
    }
    .page-mobile-app__guide-subtitle {
        font-size: 1.4em;
    }
    .page-mobile-app__qr-code {
        width: 180px;
        height: 180px;
    }
}