/* ==========================================================================
   Index Page Styles - 首頁專用樣式
   ========================================================================== */

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Hero圖片結構 - 使用picture/img取代CSS背景 */
.hero-picture {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    /* 性能優化 */
    will-change: auto;
    transform: translate3d(0, 0, 0);
    aspect-ratio: 16/9;
}

/* 多格式圖片支援現在由HTML picture元素處理 */

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 方案一：純色遮罩 - 最佳性能 */
    background: rgba(0, 0, 0, 0.5);
    z-index: 2;
    /* 移除複雜漸變以提升LCP性能 */
    /* background: linear-gradient(...); */
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    padding: var(--space-xl) var(--space-md) calc(var(--space-xl) * 2);
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: 30px;
    /* 性能優化 - 使用更簡單的背景效果 */
    /* backdrop-filter: blur(10px); */
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* 立即顯示優化 - 簡潔0.3s淡入 */
.hero-content-immediate {
    animation: heroFadeIn 0.3s ease-out;
}

.hero-scroll-immediate {
    animation: heroScrollFade 0.3s ease-out 0.2s both;
}

/* 簡潔動畫 - 只有淡入效果 */
@keyframes heroFadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes heroScrollFade {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

.hero-subtitle-small {
    font-size: clamp(0.875rem, 2vw, 1rem);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
    margin-bottom: var(--space-sm);
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-sm);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 400;
    color: var(--white);
    margin-bottom: var(--space-lg);
    font-style: italic;
    letter-spacing: 1px;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.8);
}

.hero-poem {
    margin-bottom: var(--space-lg);
}

.hero-poem p {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.8;
    font-weight: 300;
    margin-bottom: var(--space-xs);
    font-style: italic;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.hero-call-to-action {
    margin-bottom: var(--space-xl);
}

.hero-call-to-action p {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--white);
    line-height: 1.7;
    margin-bottom: var(--space-xs);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.hero-call-to-action strong {
    color: rgba(255, 255, 255, 1);
    font-weight: 600;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.9);
}

.hero-final-line {
    font-size: clamp(0.95rem, 2vw, 1.125rem);
    color: rgba(255, 255, 255, 0.9);
    font-style: italic;
    margin-top: var(--space-sm);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xxl);
}

.hero-buttons .btn {
    padding: 16px 32px;
    font-size: 1.125rem;
    font-weight: 500;
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
    /* 性能優化 - 移除backdrop-filter */
    /* backdrop-filter: blur(10px); */
    background: rgba(255, 255, 255, 0.1);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: var(--white);
    animation: bounce 1s ease-in-out infinite;
    cursor: pointer;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
}

.hero-scroll-indicator i {
    font-size: 1.5rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Quick Intro Section */
.quick-intro-section {
    background: var(--bg-secondary);
    position: relative;
}

.quick-intro-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.intro-content {
    margin-bottom: var(--space-xxl);
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.intro-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: 16px;
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: all var(--transition-normal) ease;
    position: relative;
    overflow: hidden;
}

.intro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(160, 146, 125, 0.05), transparent);
    transition: left var(--transition-slow) ease;
}

.intro-card:hover::before {
    left: 100%;
}

.intro-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.card-icon i {
    font-size: 2rem;
    color: var(--white);
}

.card-title {
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.card-description {
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.card-link {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: all var(--transition-fast) ease;
}

.card-link:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

.card-link i {
    font-size: 0.875rem;
    transition: transform var(--transition-fast) ease;
}

.card-link:hover i {
    transform: translateX(4px);
}

/* Social Media Section - 優化版DOM結構 */
.social-media-section {
    background: var(--bg-secondary);
    position: relative;
}

.social-media-content {
    text-align: center;
}

.social-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

/* 簡化的社交媒體卡片 - 減少DOM深度 */
.social-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: 20px;
    text-decoration: none;
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal) ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.social-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow) ease;
}

.social-card:hover::before {
    left: 100%;
}

.social-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

/* 簡化的圖標樣式 - 直接應用於i元素 */
.social-card i {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    font-size: 2rem;
    color: var(--white);
}

.social-card.instagram i {
    background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
}

.social-card.facebook i {
    background: #1877f2;
}

.social-card.line i {
    background: #00c300;
}

.social-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: 1.25rem;
}

.social-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    font-size: 1rem;
}

.hashtag {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: var(--space-xs) var(--space-md);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* CTA Section */
.cta-section {
    position: relative;
    padding: var(--space-xxl) 0;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        var(--secondary-color) 0%, 
        var(--primary-color) 50%, 
        var(--accent-color) 100%
    );
    background-size: 200% 200%;
    animation: gradientShift 6s ease-in-out infinite;
    z-index: 1;
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(74, 69, 63, 0.7);
    z-index: 2;
}

.cta-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
}

.cta-title {
    color: var(--white);
    margin-bottom: var(--space-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.cta-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    font-weight: 300;
}

.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: 16px 32px;
    font-size: 1.125rem;
    border-radius: 10px;
    /* 性能優化 - 移除backdrop-filter */
    /* backdrop-filter: blur(10px); */
}

.cta-buttons .btn-primary {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
}

.cta-buttons .btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    color: var(--white);
    transform: translateY(-2px);
}

.cta-buttons .btn-secondary {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--white);
}

.cta-buttons .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

/* Hero 圖片響應式優化 */
@media (max-width: 768px) {
    .hero-image {
        aspect-ratio: 4/3;
    }
}

/* 針對高密度螢幕優化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-image {
        /* 高DPI螢幕優化 */
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Responsive Design */

@media (max-width: 768px) {
    .hero-section {
        min-height: 100vh;
        height: auto;
        padding-bottom: var(--space-xl);
    }
    
    .hero-content {
        padding: var(--space-lg) var(--space-sm) calc(var(--space-lg) * 2);
        margin: 0 var(--space-sm) 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        margin-bottom: calc(var(--space-xxl) + var(--space-lg));
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .hero-scroll-indicator {
        bottom: 15px;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .intro-card {
        padding: var(--space-lg);
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
    }
    
    .card-icon i {
        font-size: 1.5rem;
    }
    

    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .social-media-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .social-card {
        padding: var(--space-lg);
    }
    
    .social-card i {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-section {
        min-height: 100vh;
        height: auto;
        padding-bottom: calc(var(--space-xl) * 1.5);
    }
    
    .hero-content {
        padding: var(--space-md) var(--space-sm) calc(var(--space-md) * 2.5);
        margin-top: 0;
    }
    
    .hero-buttons {
        margin-bottom: calc(var(--space-xxl) * 1.5);
    }
    
    .hero-scroll-indicator {
        bottom: 10px;
    }
    
    .intro-card {
        padding: var(--space-md);
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        margin-bottom: var(--space-md);
    }
    
    .card-icon i {
        font-size: 1.25rem;
    }
}

/* Scroll Animations - 僅桌面版 */
@media (min-width: 769px) and (prefers-reduced-motion: no-preference) {
    .intro-card {
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease;
    }
    
    .intro-card.aos-animate {
        opacity: 1;
        transform: translateY(0);
    }
    
    .feature-item {
        opacity: 0;
        transform: translateX(-20px);
        transition: all 0.4s ease;
    }
    
    .feature-item.aos-animate {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Print Styles */
@media print {
    .hero-section {
        height: auto;
        min-height: auto;
        padding: var(--space-xl) 0;
    }
    
    .hero-background,
    .hero-overlay,
    .cta-background,
    .cta-overlay {
        display: none;
    }
    
    .hero-content,
    .cta-content {
        color: var(--text-primary);
    }
    
    .cta-title {
        color: var(--text-primary);
    }
}

/* 手機版性能優化 - 禁用複雜動畫和效果 */
@media (max-width: 768px) {
    /* 禁用複雜的偽元素動畫以提升性能 */
    .intro-card::before,
    .social-card::before {
        display: none;
    }
    
    /* 簡化hover效果，只保留基本的transform */
    .intro-card:hover,
    .social-card:hover {
        transform: translateY(-4px);
        transition: transform 0.2s ease;
    }
    
    /* 減少box-shadow複雜度 */
    .intro-card,
    .social-card {
        box-shadow: 0 2px 8px rgba(74, 69, 63, 0.08);
    }
    
    .intro-card:hover,
    .social-card:hover {
        box-shadow: 0 4px 12px rgba(74, 69, 63, 0.12);
    }
    
    /* Hero區塊優化 - 減少層疊和複雜背景 */
    .hero-content {
        background: rgba(0, 0, 0, 0.4); /* 簡化背景 */
        border: none; /* 移除邊框 */
    }
    
    /* 禁用不必要的will-change */
    .hero-image {
        will-change: auto;
        transform: none;
    }
    
    /* 簡化按鈕樣式 */
    .hero-buttons .btn,
    .cta-buttons .btn {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        transition: transform 0.15s ease;
    }
    
    .hero-buttons .btn:hover,
    .cta-buttons .btn:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
    
    /* 關鍵渲染路徑優化 - 立即顯示重要內容 */
    .hero-content-immediate,
    .hero-scroll-immediate {
        animation: none; /* 手機版禁用動畫 */
        opacity: 1;
    }
}

/* 極小螢幕優化 - 進一步減少DOM複雜度 */
@media (max-width: 480px) {
    /* 移除所有陰影效果以提升渲染性能 */
    .intro-card,
    .social-card,
    .hero-buttons .btn,
    .cta-buttons .btn {
        box-shadow: none;
        border: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    /* 簡化圖標樣式 */
    .social-card i {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    /* 減少內間距 */
    .social-card {
        padding: var(--space-md);
    }
    
    /* Hero區塊極簡化 */
    .hero-content {
        background: rgba(0, 0, 0, 0.5);
        border-radius: 12px;
    }
}

/* 低性能設備優化 */
@media (max-width: 768px) and (prefers-reduced-motion: reduce) {
    /* 完全禁用所有動畫和過渡 */
    *,
    *::before,
    *::after {
        animation: none;
        transition: none;
    }
    
    /* 移除hover效果 */
    .intro-card:hover,
    .social-card:hover,
    .hero-buttons .btn:hover,
    .cta-buttons .btn:hover {
        transform: none;
        box-shadow: inherit;
    }
}

/* 慢速連線優化 - 通過JavaScript動態添加此類 */
.slow-connection {
    /* 禁用所有非關鍵動畫 */
    .hero-content-immediate,
    .hero-scroll-immediate {
        animation: none;
    }
    
    /* 簡化背景 */
    .cta-background {
        background: var(--primary-color);
        animation: none;
    }
    
    /* 移除複雜渐变 */
    .card-icon,
    .social-card i {
        background: var(--primary-color);
    }
}