/* ################################### raum-hero ################################### */

.scroll_arrow {
    width: var(--space-14);
    margin: var(--space-15) 0;
}

.scroll_line {
    height: var(--space-130);
}

.scroll_mouse {
    position: absolute;
    width: var(--space-18);
    bottom: var(--space-42);
    animation: mouse var(--anim-mouse-bounce);
}

@keyframes mouse {
	 0%  {bottom: var(--space-42); opacity: var(--opacity-100);}
	 100% {bottom: var(--space-10); opacity: var(--opacity-40);}
}

.raum-hero {
    height: var(--svh-100);
    background-color: var(--base-color-black);
    position: sticky;
    top: 0;
    z-index: var(--z-base);
    overflow: hidden;
}

.raum-main-intro,
.raum-main-works,
.raum-main-news,
footer {
    position: relative;
    z-index: var(--z-default);
    background: var(--background-color);
}

.raum-hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 단일 이미지 폴백 */
.raum-hero-slider > img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Vertical Strip Cascade */
.raum-hero-slider.strip-active > img {
    display: none;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.strip-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
}

.strip {
    flex: 1;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.strip-inner {
    position: absolute;
    top: 0;
    height: 100%;
}

.strip-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.raum-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(var(--color-black-rgb), var(--alpha-3));
    z-index: var(--z-default);
}

.raum-hero-text {
    position: absolute;
    top: 65%;
    left: var(--m-pos-1);
    transform: translateY(-50%);
    z-index: var(--z-raised);
    opacity: var(--opacity-0);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--gap-md);
}

.raum-hero-text.loaded {
    opacity: var(--opacity-100);
    transition: opacity var(--transition-slower);
}

.raum-hero-text > h1 {
    font-size: var(--m-font-hero);
    line-height: var(--lh-0-95);
    color: var(--base-color-white);
    font-weight: var(--fw-bold);
    letter-spacing: calc(-1 * var(--em-0-03));
    text-transform: uppercase;
}

.raum-hero-text > p {
    font-size: var(--m-font-1);
    line-height: var(--lh-1-4);
    color: var(--base-color-white);
    font-weight: var(--fw-medium);
    letter-spacing: var(--em-0-05);
}

/* Scroll Down */
.raum-hero-scroll {
    position: absolute;
    right: var(--m-gap-2);
    bottom: var(--m-gap-2);
    z-index: var(--z-raised);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-12);
    opacity: var(--opacity-0);
    transition: opacity var(--transition-slower);
}

.raum-hero-text.loaded ~ .raum-hero-scroll {
    opacity: var(--opacity-100);
}

.raum-hero-scroll span {
    font-size: var(--font-sm);
    color: rgba(var(--color-white-rgb), var(--alpha-7));
    letter-spacing: var(--em-0-15);
    font-weight: var(--fw-medium);
    writing-mode: vertical-lr;
}

.raum-hero-scroll-line {
    width: var(--space-1);
    height: var(--cv-lg-2);
    background: rgba(var(--color-white-rgb), var(--alpha-4));
    position: relative;
    overflow: hidden;
}

.raum-hero-scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(var(--color-white-rgb), var(--alpha-9));
    animation: scrollLine var(--anim-scroll-line) infinite;
}

@keyframes scrollLine {
    0% { top: -100%; }
    50% { top: 100%; }
    50.01% { top: -100%; }
    100% { top: 100%; }
}


/* ################################### raum-main-intro ################################### */

.raum-main-intro {
    padding: var(--m-section-pad) 0;
    padding-left: var(--padding-pc);
    padding-right: var(--padding-pc);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.raum-main-intro-title {
    font-size: var(--m-font-large);
    font-weight: var(--fw-black);
    -webkit-text-stroke: var(--space-2) var(--base-color-black);
    line-height: var(--lh-1-1);
    color: var(--base-color-black);
    margin-bottom: var(--gap-medium-3);
}

.raum-main-intro-desc {
    font-size: var(--font-base-3);
    line-height: var(--lh-1-8);
    color: var(--base-color-black);
    font-weight: var(--fw-normal);
    letter-spacing: var(--em-0-01);
}

.raum-main-intro-tag {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--m-gap-1);
    margin-top: var(--section-pad-sm);
}

.raum-main-intro-line {
    display: block;
    width: var(--m-pad-2);
    height: var(--space-1);
    background: var(--signature-color);
}

.raum-main-intro-keyword {
    font-family: var(--font-KR-base);
    font-size: var(--font-md);
    font-weight: var(--fw-bold);
    color: var(--signature-color);
    letter-spacing: var(--em-0-15);
    text-transform: uppercase;
    white-space: nowrap;
}

@media all and (max-width: 600px) {
    .raum-main-intro {
        padding-top: var(--m-pad-3);
        padding-bottom: var(--m-pad-3);
        padding-left: var(--m-pad-1);
        padding-right: var(--m-pad-1);
    }

    .raum-main-intro-desc br {
        display: none;
    }
}


/* ################################### raum-main-works ################################### */

.raum-main-works {
    padding-top: var(--section-gap);
}

.raum-main-works-title {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    margin-bottom: var(--gap-section-2-5);
}

.raum-main-works-title h2 {
    font-size: var(--sub-title-font-size);
    line-height: var(--sub-title-font-size-line);
    color: var(--base-color-black);
    font-weight: var(--fw-bold);
}

.raum-main-works-desc {
    margin-top: var(--spacing-md);
    margin-left: auto;
    font-size: var(--text-font-size);
    line-height: var(--lh-1-7);
    color: var(--base-color-black);
    font-weight: var(--fw-normal);
    text-align: right;
}


/* ################################### raum-main-news ################################### */

.raum-main-news {
    padding-top: var(--section-gap);
}

.raum-main-news-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--gap-section-2-5);
}

.raum-main-news-plus {
    font-size: var(--m-font-2);
    line-height: var(--lh-1);
    color: var(--base-color-black);
    font-weight: var(--fw-light);
    transition: color var(--transition-fast);
}

.raum-main-news-plus:hover {
    color: var(--signature-color);
}

.raum-main-news-title h2 {
    font-size: var(--sub-title-font-size);
    line-height: var(--sub-title-font-size-line);
    color: var(--base-color-black);
    font-weight: var(--fw-bold);
}


/* ################################### 반응형 - 메인 ################################### */

@media all and (max-width: 1024px) {

    /* raum-hero */
    .raum-hero-scroll {
        display: none;
    }
}