/**
 * 홈 랜딩 전용 스타일 (home_landing.php)
 * .home-landing 스코프 — 네비게이션/전역 body는 assets/css/style.css 사용
 */

.home-landing {
    /* 홈 랜딩 로컬 변수 (사이트 전역과 분리) */
    --color-primary: #000000;
    --color-secondary: #666666;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-dark: #0a0e27;
    --color-bg-alt: #f8f9fa;
    --color-border: #e0e0e0;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4rem;
    --transition: 0.3s ease;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.home-landing .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Buttons */
.home-landing .btn{
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
}

.home-landing .btn-primary{
    background-color: var(--color-primary);
    color: white;
    border: 1px solid var(--color-primary);
}

.home-landing .btn-primary:hover{
    background-color: #1a1a1a;
    border-color: #1a1a1a;
}

.home-landing .btn-outline{
    background-color: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.home-landing .btn-outline:hover{
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.home-landing .section .btn-outline{
    color: var(--color-text);
    border-color: var(--color-border);
}

.home-landing .section .btn-outline:hover{
    background-color: var(--color-bg-alt);
    border-color: var(--color-text);
}

.home-landing .btn-sm{
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.home-landing .btn-lg{
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

/* Hero Section */
.home-landing .hero{
    padding-top: calc(var(--spacing-3xl) + var(--spacing-lg)); /* 네비게이션 바 높이를 고려한 패딩 */
    padding-bottom: var(--spacing-3xl);
    background: #ffffff;
    margin-top: calc(-1 * var(--navbar-height)); /* body의 padding-top을 상쇄 */
}

.home-landing .hero-wrapper{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.home-landing .hero-content{
    max-width: 100%;
}

.home-landing .hero-title{
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.home-landing .hero-title.hero-title-size-xs{
    font-size: clamp(1.8rem, 3vw, 2.6rem) !important;
}

.home-landing .hero-title.hero-title-size-sm{
    font-size: clamp(2.1rem, 4vw, 3.2rem) !important;
}

.home-landing .hero-title.hero-title-size-md{
    font-size: clamp(2.4rem, 6vw, 4.2rem) !important;
}

.home-landing .hero-title.hero-title-size-lg{
    font-size: clamp(2.8rem, 7vw, 4.8rem) !important;
}

.home-landing .hero-title.hero-title-size-xl{
    font-size: clamp(3.2rem, 8vw, 5.5rem) !important;
}

/* Generic text size helpers (for subtitle, descriptions, SDS, breath text 등) */
.home-landing .text-size-xs{
    font-size: 0.8em !important;
}

.home-landing .text-size-sm{
    font-size: 0.9em !important;
}

.home-landing .text-size-md{
    font-size: 1em !important;
}

.home-landing .text-size-lg{
    font-size: 1.1em !important;
}

.home-landing .text-size-xl{
    font-size: 1.25em !important;
}

/* 풀화면 이미지 섹션 제목에 대한 절대 크기 (히어로 섹션과 동일한 스케일) */
.home-landing .section-scroll .scroll-item-content .scroll-item-title.text-size-xs{
    font-size: clamp(1.8rem, 3vw, 2.6rem) !important;
}

.home-landing .section-scroll .scroll-item-content .scroll-item-title.text-size-sm{
    font-size: clamp(2.1rem, 4vw, 3.2rem) !important;
}

.home-landing .section-scroll .scroll-item-content .scroll-item-title.text-size-md{
    font-size: clamp(2rem, 5vw, 3.5rem) !important; /* 기본값과 동일 */
}

.home-landing .section-scroll .scroll-item-content .scroll-item-title.text-size-lg{
    font-size: clamp(2.8rem, 7vw, 4.8rem) !important; /* 히어로 섹션의 lg와 동일 */
}

.home-landing .section-scroll .scroll-item-content .scroll-item-title.text-size-xl{
    font-size: clamp(3.2rem, 8vw, 5.5rem) !important; /* 히어로 섹션의 xl과 동일 */
}

.home-landing .hero-title-main{
    display: block;
    line-height: 1.1;
}

.home-landing .hero-title-sub{
    display: block;
    color: var(--color-text-light);
    font-size: 0.9em;
}

.home-landing .hero-description{
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    max-width: 600px;
}

.home-landing .hero-actions{
    display: flex;
    gap: var(--spacing-md);
}

.home-landing .hero-video{
    width: 100%;
}

.home-landing .video-placeholder{
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Sections */
.home-landing .section{
    padding: calc(var(--spacing-3xl) * 1.5) 0;
}

.home-landing .section-breath{
    background-color: #ffffff;
}

.home-landing .section-dark{
    background-color: var(--color-bg-dark);
    color: white;
}

.home-landing .section-alt{
    background-color: var(--color-bg-alt);
}

/* Scroll Animation Section */
.home-landing .section-scroll{
    position: relative;
    padding: 0;
    min-height: 200vh; /* 이미지 + 텍스트 스크롤 공간 */
}

/* 오버레이 텍스트 없을 때: 스크롤 연출·여백 축소 */
.home-landing .section-scroll--media-only {
    min-height: auto;
}

.home-landing .section-scroll--media-only .scroll-image-container {
    position: relative;
    top: auto;
    height: 85vh;
    min-height: 320px;
}

/* Full Screen Sticky Image Container - 이미지가 고정되는 부분 */
.home-landing .scroll-image-container{
    position: sticky;
    top: 0;
    width: 100%;
    height: 100vh;
    z-index: 1;
    overflow: hidden;
}

.home-landing .scroll-image-wrapper{
    position: relative;
    width: 100%;
    height: 100%;
}

.home-landing .scroll-image{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
    transform: translateY(0) scale(1);
}

.home-landing .scroll-image-img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

/* Scrollable Text Content Overlay - 텍스트가 이미지 위로 스크롤 */
.home-landing .scroll-content-wrapper{
    position: relative;
    z-index: 2;
    pointer-events: none;
    margin-top: -100vh; /* sticky 이미지 위로 올라와서 겹치도록 */
    padding-top: 90vh;  /* 텍스트 등장 시점을 늦춰 이미지만 먼저 더 오래 보이게 (모바일은 아래 @media에서 따로 조정) */
}

.home-landing .scroll-content{
    position: relative;
    width: 100%;
}

.home-landing .scroll-item{
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
    pointer-events: auto;
    position: relative;
}

/* Image Exit Spacer - 텍스트가 다 지나간 후 이미지가 스크롤되도록 */
.home-landing .scroll-image-exit{
    height: 100vh;
    width: 100%;
    position: relative;
    z-index: 0;
    background-color: var(--color-bg-dark);
}

.home-landing .scroll-item-content{
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 3;
    padding: var(--spacing-xl);
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    margin: 0 auto;
}

.home-landing .scroll-item-title{
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.15;
    color: white;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.home-landing .scroll-item h2.scroll-item-title{
    font-size: clamp(2.5rem, 6vw, 4.5rem);
}

.home-landing .scroll-item-subtitle{
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
    margin-top: var(--spacing-sm);
}

.home-landing .scroll-item-description{
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
    max-width: 800px;
    margin: 0 auto;
}

.home-landing .section-header{
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
}

.home-landing .section-title{
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.15;
    letter-spacing: -0.01em;
}

.home-landing .section-description{
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: 1.6;
}

.home-landing .section-dark .section-description{
    color: rgba(255, 255, 255, 0.8);
}

.home-landing .video-container{
    margin: var(--spacing-2xl) 0;
}

/* Features Grid */
.home-landing .features-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.home-landing .feature-card{
    padding: var(--spacing-lg);
}

.home-landing .feature-title{
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    letter-spacing: -0.005em;
}

.home-landing .feature-subtitle{
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

.home-landing .section-dark .feature-subtitle{
    color: rgba(255, 255, 255, 0.7);
}

.home-landing .feature-description{
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.6;
}

.home-landing .section-dark .feature-description{
    color: rgba(255, 255, 255, 0.8);
}

.home-landing .section-actions{
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

/* Customers Section */
.home-landing .testimonials{
    margin: var(--spacing-2xl) 0;
}

.home-landing .testimonial-card{
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    position: relative;
}

.home-landing .testimonial-text{
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.home-landing .testimonial-author{
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.home-landing .testimonial-author strong{
    font-weight: 600;
}

.home-landing .testimonial-author span{
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

.home-landing .testimonial-link{
    display: inline-block;
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.home-landing .testimonial-link:hover{
    color: white;
    text-decoration: underline;
}

.home-landing .customers-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.home-landing .customer-logo{
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    transition: var(--transition);
    color: rgba(255, 255, 255, 0.8);
}

.home-landing .customer-logo:hover{
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Blog Section */
.home-landing .blog-grid{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.home-landing .blog-card{
    background-color: var(--color-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.home-landing .blog-card:hover{
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: rgba(0, 0, 0, 0.2);
}

.home-landing .blog-image{
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.home-landing .image-placeholder{
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.home-landing .blog-content{
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.home-landing .blog-title{
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.home-landing .blog-excerpt{
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    flex: 1;
}

.home-landing .blog-meta{
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.home-landing .blog-date{
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

/* News Section */
.home-landing .news-list{
    max-width: 900px;
    margin: 0 auto;
}

.home-landing .news-item{
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
    display: grid;
    grid-template-columns: 150px 1fr auto;
    gap: var(--spacing-lg);
    align-items: start;
}

.home-landing .news-item:last-child{
    border-bottom: none;
}

.home-landing .news-date{
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    white-space: nowrap;
}

.home-landing .news-title{
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.home-landing .news-link{
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    text-decoration: none;
    white-space: nowrap;
}

.home-landing .news-link:hover{
    text-decoration: underline;
}

/* CTA Section */
.home-landing .section-cta{
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.home-landing .cta-content{
    max-width: 600px;
    margin: 0 auto;
}

.home-landing .cta-title{
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.home-landing .cta-description{
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.home-landing .section-cta .btn-primary{
    background-color: white;
    color: var(--color-primary);
}

.home-landing .section-cta .btn-primary:hover{
    background-color: rgba(255, 255, 255, 0.9);
}

/* Responsive */
@media (max-width: 768px) {






.home-landing .hero{
        padding-top: calc(var(--navbar-height) + var(--spacing-xl)); /* 네비게이션 바 높이 + 추가 여백 */
        padding-bottom: var(--spacing-2xl);
        margin-top: 0; /* 모바일에서는 마진 제거하여 네비게이션에 가려지지 않도록 */
    }

.home-landing .hero-wrapper{
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

.home-landing .hero-content{
        text-align: center;
        order: -1; /* 모바일에서 타이틀이 먼저 표시되도록 */
    }

.home-landing .hero-title{
        font-size: var(--font-size-4xl);
    }

    /* 모바일에서 줄바꿈 유지를 위한 텍스트 크기 조정 허용 */
    .hero-title-main,
    .hero-title-sub,
    .hero-description,
    .scroll-item-title,
    .scroll-item-description,
.home-landing .section-description{
        -webkit-text-size-adjust: 100%;
        -moz-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
        text-size-adjust: 100%;
        /* JavaScript로 동적 조정이 가능하도록 transition 추가 */
        transition: font-size 0.3s ease;
    }

.home-landing .hero-video{
        order: 1; /* 모바일에서 비디오/이미지가 타이틀 다음에 표시되도록 */
    }

    /* 모바일에서 드롭다운 메뉴를 아코디언 방식으로 변경 */


.home-landing .dropdown-menu{
        position: static;
        top: auto;
        left: auto;
        background-color: transparent;
        border: none;
        border-radius: 0;
        box-shadow: none;
        min-width: auto;
        padding: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        -webkit-transition: max-height 0.3s ease, padding 0.3s ease;
    }

.home-landing .dropdown.active .dropdown-menu{
        max-height: 500px; /* 충분히 큰 값으로 설정 */
        padding: var(--spacing-xs) 0;
    }

.home-landing .dropdown-menu li{
        padding: 0;
    }

.home-landing .dropdown-menu a{
        display: block;
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-2xl);
        color: var(--color-text-light);
        text-decoration: none;
        font-size: var(--font-size-sm);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .dropdown-menu a:hover,
.home-landing .dropdown-menu a:active{
        background-color: var(--color-bg-alt);
        color: var(--color-primary);
    }

.home-landing .dropdown-arrow{
        transition: transform 0.3s ease;
        -webkit-transition: -webkit-transform 0.3s ease;
    }

.home-landing .dropdown.active .dropdown-arrow{
        transform: rotate(180deg);
        -webkit-transform: rotate(180deg);
    }

.home-landing .dropdown:hover .dropdown-menu{
        opacity: 1;
        visibility: visible;
        transform: none;
    }

.home-landing .section-title{
        font-size: var(--font-size-3xl);
    }

.home-landing .features-grid{
        grid-template-columns: 1fr;
    }

.home-landing .blog-grid{
        grid-template-columns: 1fr;
    }

.home-landing .customers-grid{
        grid-template-columns: repeat(2, 1fr);
    }

.home-landing .news-item{
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }

    /* Scroll animation responsive */
.home-landing .section-scroll{
        min-height: 200vh;
    }

.home-landing .section-scroll--media-only {
        min-height: auto;
    }

.home-landing .section-scroll--media-only .scroll-image-container {
        height: 70vh;
        min-height: 280px;
    }

.home-landing .scroll-image-container{
        height: 100vh;
    }

.home-landing .scroll-content-wrapper{
        margin-top: -100vh;
        padding-top: 60vh; /* 모바일에서는 텍스트를 조금 더 빨리 등장시켜서 보기 좋게 조정 */
    }

.home-landing .scroll-item{
        min-height: 80vh;
        padding: var(--spacing-xl) 0;
    }

.home-landing .scroll-item-content{
        max-width: 100%;
        padding: 0 var(--spacing-lg);
    }

.home-landing .scroll-image-exit{
        height: 50vh;
    }
}