/* ========================================
   FLOWINGLAB - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    --black: #0a0a0a;
    --white: #f5f5f5;
    --accent: #ff3d00;
    --gray: #888;
    --light-gray: #1a1a1a;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow: hidden;
    height: 100%;
    width: 100%;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: var(--black);
    color: var(--white);
    font-weight: 300;
    line-height: 1.7;
    cursor: none;
}

/* ========================================
   Custom Cursor
   ======================================== */

.cursor {
    width: 20px;
    height: 20px;
    border: 1px solid var(--white);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10001;
    transition: transform 0.15s ease, width 0.2s, height 0.2s, background 0.2s;
    transform: translate(-50%, -50%);
}

.cursor-dot {
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 10002;
    transform: translate(-50%, -50%);
}

.cursor.hover {
    width: 60px;
    height: 60px;
    background: rgba(255, 61, 0, 0.1);
    border-color: var(--accent);
}

/* ========================================
   Intro Curtain Animation
   ======================================== */

.intro-curtain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
}

.curtain-top, .curtain-bottom {
    position: absolute;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--black);
    transition: transform 1.2s cubic-bezier(0.76, 0, 0.24, 1);
}

.curtain-top {
    top: 0;
}

.curtain-bottom {
    bottom: 0;
}

.intro-curtain.open .curtain-top {
    transform: translateY(-100%);
}

.intro-curtain.open .curtain-bottom {
    transform: translateY(100%);
}

.intro-logo {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10000;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    letter-spacing: 8px;
    opacity: 1;
    transition: opacity 0.5s ease 0.8s;
}

.intro-curtain.open .intro-logo {
    opacity: 0;
}

/* ========================================
   Noise Overlay
   ======================================== */

.noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}

/* ========================================
   Header
   ======================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 24px 48px;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    mix-blend-mode: difference;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.8s ease 1.5s;
}

header.show {
    opacity: 1;
    transform: translateY(0);
}

.logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 4px;
    color: var(--white);
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--white);
    text-decoration: none;
    position: relative;
    padding-bottom: 4px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ========================================
   Horizontal Container
   ======================================== */

.horizontal-wrapper {
    height: 100vh;
    overflow: hidden;
}

.horizontal-container {
    display: flex;
    height: 100vh;
    transition: transform 1s cubic-bezier(0.76, 0, 0.24, 1);
}

.section {
    min-width: 100vw;
    height: 100vh;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

/* ========================================
   Hero Section
   ======================================== */

.hero-section {
    display: grid;
    grid-template-columns: 50% 50%;
    position: relative;
    width: 100vw;
}

/* Hero Left - Content */
.hero-left {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 60px;
    background: var(--black);
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(60px, 10vw, 120px);
    letter-spacing: 8px;
    line-height: 0.9;
    overflow: hidden;
}

.hero-title span {
    display: block;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-title.show span {
    opacity: 1;
    transform: translateY(0);
}

.hero-title span:nth-child(2) {
    transition-delay: 0.1s;
}

.hero-tagline {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(20px, 3vw, 36px);
    letter-spacing: 8px;
    margin-top: 24px;
    color: var(--accent);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease 0.4s;
}

.hero-tagline.show {
    opacity: 1;
    transform: translateY(0);
}

.hero-sub {
    font-size: 13px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--gray);
    margin-top: 40px;
    opacity: 0;
    transition: opacity 0.8s ease 0.6s;
}

.hero-sub.show {
    opacity: 1;
}

/* Hero Right - Video */
.hero-right {
    position: relative;
    overflow: hidden;
    background: var(--light-gray);
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 48px;
    left: 25%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transition: opacity 0.8s ease 1s;
    z-index: 3;
}

.hero-scroll.show {
    opacity: 1;
}

.hero-scroll-text {
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gray);
}

.hero-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--gray), transparent);
    animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ========================================
   About Section
   ======================================== */

.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.about-left {
    padding: 120px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: sticky;
    top: 0;
    height: 100vh;
    background: var(--black);
    z-index: 2;
}

.about-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}

.about-label.show {
    opacity: 1;
    transform: translateX(0);
}

.about-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(36px, 5vw, 56px);
    letter-spacing: 2px;
    line-height: 1.1;
    margin-bottom: 32px;
}

.about-title .line {
    display: block;
    overflow: hidden;
}

.about-title .line span {
    display: inline-block;
    transform: translateY(100%);
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-title.show .line span {
    transform: translateY(0);
}

.about-title .line:nth-child(2) span {
    transition-delay: 0.1s;
}

.about-title .line:nth-child(3) span {
    transition-delay: 0.2s;
}

.about-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.9;
    margin-bottom: 16px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease 0.3s;
}

.about-desc.show {
    opacity: 1;
    transform: translateY(0);
}

.about-right {
    background: var(--light-gray);
    position: relative;
    overflow: hidden;
}

.about-images {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.about-image {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s;
}

.about-image:hover::before {
    opacity: 0.2;
}

.image-placeholder {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gray);
}

/* ========================================
   Business Section
   ======================================== */

.business-section {
    display: flex;
    align-items: center;
    padding: 0 80px;
    background: #f5f5f5;
    color: var(--black);
}

.business-wrapper {
    width: 100%;
}

.business-header {
    margin-bottom: 80px;
}

.business-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
}

.business-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(48px, 8vw, 100px);
    letter-spacing: 4px;
    line-height: 1;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.business-card {
    padding: 48px 36px;
    background: var(--black);
    color: var(--white);
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease;
}

.business-card:hover {
    transform: translateY(-12px);
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-card-number {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 64px;
    color: var(--light-gray);
    line-height: 1;
    margin-bottom: 24px;
    transition: color 0.3s;
}

.business-card:hover .business-card-number {
    color: var(--accent);
}

.business-card-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 28px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.business-card-desc {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

.business-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 24px;
}

.business-card-tag {
    padding: 6px 12px;
    font-size: 10px;
    letter-spacing: 1px;
    border: 1px solid #333;
    color: var(--gray);
}

/* ========================================
   Branding Section
   ======================================== */

.branding-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.branding-left {
    background: var(--accent);
    padding: 120px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.branding-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(0,0,0,0.5);
    margin-bottom: 24px;
}

.branding-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(48px, 6vw, 80px);
    letter-spacing: 4px;
    color: var(--black);
    line-height: 1;
    margin-bottom: 32px;
}

.branding-desc {
    font-size: 15px;
    color: rgba(0,0,0,0.7);
    line-height: 1.9;
    margin-bottom: 40px;
}

.branding-services {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.branding-service {
    padding: 12px 24px;
    background: var(--black);
    color: var(--white);
    font-size: 13px;
    font-weight: 500;
}

.branding-right {
    background: var(--black);
    display: flex;
    flex-direction: column;
}

.branding-image {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--light-gray);
    position: relative;
    overflow: hidden;
}

.branding-image:last-child {
    border-bottom: none;
}

.branding-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent);
    transform: translateX(-100%);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.branding-image:hover::before {
    transform: translateX(100%);
}

/* ========================================
   Commerce Section
   ======================================== */

.commerce-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.commerce-left {
    background: var(--light-gray);
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.commerce-image {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--black);
    position: relative;
    overflow: hidden;
    transition: background 0.3s;
}

.commerce-image:hover {
    background: #222;
}

.commerce-right {
    background: var(--black);
    padding: 120px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.commerce-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
}

.commerce-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(48px, 6vw, 80px);
    letter-spacing: 4px;
    line-height: 1;
    margin-bottom: 32px;
}

.commerce-desc {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.9;
    margin-bottom: 40px;
}

.commerce-list {
    list-style: none;
}

.commerce-list li {
    padding: 16px 0;
    border-bottom: 1px solid var(--light-gray);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: color 0.3s, padding-left 0.3s;
}

.commerce-list li:hover {
    color: var(--accent);
    padding-left: 8px;
}

.commerce-list li::before {
    content: '→';
    color: var(--accent);
}

/* ========================================
   MCN/Partnership Section
   ======================================== */

.mcn-section {
    display: flex;
    flex-direction: column;
}

.mcn-header {
    padding: 120px 80px 60px;
    background: var(--black);
}

.mcn-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
}

.mcn-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(48px, 8vw, 80px);
    letter-spacing: 4px;
}

.mcn-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--light-gray);
}

.mcn-card {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--black);
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.mcn-card:hover {
    background: #222;
}

.mcn-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 50%, rgba(0,0,0,0.8));
    opacity: 0;
    transition: opacity 0.4s;
}

.mcn-card:hover .mcn-card-overlay {
    opacity: 1;
}

.mcn-card-info {
    position: absolute;
    bottom: 24px;
    left: 24px;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s;
}

.mcn-card:hover .mcn-card-info {
    transform: translateY(0);
    opacity: 1;
}

.mcn-card-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 2px;
}

.mcn-card-role {
    font-size: 11px;
    color: var(--gray);
}

/* ========================================
   Portfolio Section
   ======================================== */

.portfolio-section {
    display: grid;
    grid-template-columns: 400px 1fr;
}

.portfolio-left {
    background: var(--black);
    padding: 120px 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1px solid var(--light-gray);
}

.portfolio-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
}

.portfolio-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 56px;
    letter-spacing: 4px;
    margin-bottom: 24px;
}

.portfolio-desc {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 40px;
}

.portfolio-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 28px;
    border: 1px solid var(--white);
    color: var(--white);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s;
}

.portfolio-btn:hover {
    background: var(--white);
    color: var(--black);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
}

.portfolio-item {
    background: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--black);
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.portfolio-item:hover {
    background: #222;
}

.portfolio-item-overlay {
    position: absolute;
    inset: 0;
    background: var(--accent);
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-item:hover .portfolio-item-overlay {
    transform: translateY(0);
}

.portfolio-item-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    letter-spacing: 4px;
    color: var(--black);
}

/* ========================================
   Contact Section
   ======================================== */

.contact-section {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(200px, 40vw, 600px);
    color: var(--light-gray);
    opacity: 0.3;
    white-space: nowrap;
}

.contact-wrapper {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 0 40px;
}

.contact-label {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
}

.contact-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(56px, 12vw, 140px);
    letter-spacing: 4px;
    line-height: 1;
    margin-bottom: 24px;
}

.contact-title .outline {
    -webkit-text-stroke: 1px var(--white);
    color: transparent;
}

.contact-desc {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 48px;
}

.contact-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-btn.primary {
    background: var(--accent);
    color: var(--white);
}

.contact-btn.primary:hover {
    transform: translateX(8px);
}

.contact-btn.secondary {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--white);
}

.contact-btn.secondary:hover {
    background: var(--white);
    color: var(--black);
}

.contact-info {
    display: flex;
    gap: 60px;
    justify-content: center;
    padding-top: 40px;
    border-top: 1px solid var(--light-gray);
}

.contact-info-item {
    text-align: center;
}

.contact-info-label {
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 8px;
}

.contact-info-value {
    font-size: 14px;
}

/* ========================================
   Progress Indicator
   ======================================== */

.progress {
    position: fixed;
    bottom: 40px;
    left: 48px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.8s ease 1.5s;
}

.progress.show {
    opacity: 1;
}

.progress-current {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
}

.progress-bar {
    width: 100px;
    height: 2px;
    background: var(--light-gray);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 12.5%;
    transition: width 0.8s cubic-bezier(0.76, 0, 0.24, 1);
}

.progress-total {
    font-size: 12px;
    color: var(--gray);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    position: fixed;
    bottom: 40px;
    right: 48px;
    display: flex;
    align-items: center;
    gap: 24px;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.8s ease 1.5s;
}

.footer.show {
    opacity: 1;
}

.footer-text {
    font-size: 11px;
    color: var(--gray);
}

.footer-socials {
    display: flex;
    gap: 8px;
}

.social-link {
    width: 32px;
    height: 32px;
    border: 1px solid var(--gray);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--gray);
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    border-color: var(--white);
    color: var(--white);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1200px) {
    .business-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .portfolio-section {
        grid-template-columns: 1fr;
    }

    .portfolio-left {
        padding: 100px 40px 40px;
        border-right: none;
    }

    .portfolio-grid {
        display: none;
    }
}

@media (max-width: 900px) {
    header {
        padding: 20px 24px;
    }

    .nav-menu {
        display: none;
    }

    /* Hero responsive */
    .hero-section {
        grid-template-columns: 1fr;
    }

    .hero-left {
        padding: 120px 24px 60px;
    }

    .hero-content {
        text-align: center;
    }

    .hero-right {
        min-height: 50vh;
    }

    .hero-scroll {
        left: 50%;
    }

    .about-section,
    .branding-section,
    .commerce-section {
        grid-template-columns: 1fr;
    }

    .about-right,
    .branding-right,
    .commerce-left {
        display: none;
    }

    .about-left,
    .branding-left,
    .commerce-right {
        padding: 100px 24px;
    }

    .business-section {
        padding: 100px 24px;
    }

    .mcn-header {
        padding: 100px 24px 40px;
    }

    .mcn-grid {
        grid-template-columns: 1fr;
    }

    .contact-buttons {
        flex-direction: column;
    }

    .contact-info {
        flex-direction: column;
        gap: 24px;
    }

    .progress {
        left: 24px;
    }

    .footer {
        display: none;
    }

    .cursor, .cursor-dot {
        display: none;
    }
}