:root {
    --bg-color: #f4f4f4;
    --text-color: #111;
    --accent-color: #3b82f6;
    /* Electric Blue */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --gap: 20px;
    --container-padding: 4vw;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    overflow-x: hidden;
    cursor: none;
    /* Custom cursor */
}

a {
    text-decoration: none;
    color: inherit;
    cursor: none;
    /* Custom cursor */
}

ul {
    list-style: none;
}

/* Custom Cursor */
.cursor-follower {
    position: fixed;
    width: 20px;
    height: 20px;
    background-color: var(--text-color);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
    transition: transform 0.1s ease, width 0.3s ease, height 0.3s ease;
}

body:hover .cursor-follower {
    opacity: 1;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 30px var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
    color: #fff;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.nav {
    display: none;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
        gap: 40px;
    }
}

.nav-link {
    font-size: 0.9rem;
    text-transform: uppercase;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-text {
    z-index: 2;
    text-align: center;
    color: #fff;
    mix-blend-mode: difference;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 10vw;
    line-height: 0.9;
    font-weight: 400;
    margin-bottom: 20px;
}

.hero-title .line {
    display: block;
    overflow: hidden;
    /* For animation reveal */
}

.hero-subtitle {
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    margin-top: 20px;
    text-transform: uppercase;
    opacity: 0;
    /* Animated in */
}

/* Work Section */
.work {
    padding: 100px var(--container-padding);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 80px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding-bottom: 20px;
}

.section-header h2 {
    font-size: 4rem;
    font-family: var(--font-serif);
    font-weight: 400;
}

.project-item {
    display: flex;
    flex-direction: column;
    margin-bottom: 15vh;
}

@media (min-width: 900px) {
    .project-item {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .project-item.reverse {
        flex-direction: row-reverse;
    }
}

.project-info {
    flex: 1;
    padding: 20px;
}

.project-num {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 10px;
    opacity: 0.6;
}

.project-title {
    font-size: 3rem;
    font-weight: 500;
    margin-bottom: 10px;
    cursor: none;
}

.project-cat {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

.project-image-wrapper {
    flex: 1.5;
    overflow: hidden;
    position: relative;
    height: 60vh;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease-out;
}

.project-image-wrapper:hover .project-img {
    transform: scale(1.05);
}

/* Clients Marquee */
.clients-marquee {
    padding: 60px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    overflow: hidden;
    white-space: nowrap;
}

.marquee-inner {
    display: inline-block;
    font-size: 5vw;
    font-family: var(--font-serif);
    text-transform: uppercase;
    color: transparent;
    -webkit-text-stroke: 1px var(--text-color);
}

/* Services */
.services {
    padding: 100px var(--container-padding);
}

.service-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .service-list {
        grid-template-columns: repeat(2, 1fr);
        column-gap: 80px;
        row-gap: 60px;
    }
}

.service-item {
    border-top: 1px solid rgba(0, 0, 0, 1);
    padding-top: 20px;
    transition: transform 0.3s ease;
}

.service-item:hover {
    transform: translateX(10px);
}

.service-name {
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.service-desc {
    font-size: 1rem;
    opacity: 0.6;
}

/* Insights */
.insights {
    padding: 100px var(--container-padding);
    background-color: #000;
    color: #fff;
}

.insights .section-header {
    border-color: rgba(255, 255, 255, 0.2);
}

.insights-slider {
    display: flex;
    gap: 40px;
    overflow-x: auto;
    padding-bottom: 40px;
    scrollbar-width: none;
    /* Firefox */
}

.insights-slider::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.insight-card {
    min-width: 300px;
    width: 30vw;
    flex-shrink: 0;
}

.insight-img-wrapper {
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    margin-bottom: 20px;
}

.insight-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.insight-card:hover .insight-img {
    transform: scale(1.1);
}

.insight-date {
    display: block;
    font-size: 0.8rem;
    opacity: 0.5;
    margin-bottom: 5px;
    text-transform: uppercase;
}

.insight-info h4 {
    font-size: 1.5rem;
    font-weight: 400;
    font-family: var(--font-serif);
}

/* Card Stack Section */
.card-stack-section {
    height: 300vh;
    /* Long scroll area for the effect */
    position: relative;
    background-color: #e0e0e0;
    color: #111;
}

.card-stack-wrapper {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    perspective: 1000px;
}

.card-stack-intro {
    position: absolute;
    top: 15%;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 10;
}

.card-stack-intro h2 {
    font-family: var(--font-serif);
    font-size: 4rem;
    line-height: 1;
}

.card-stack {
    position: relative;
    width: 300px;
    /* Card Width */
    height: 420px;
    /* Card Height */
}

.card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    transform-origin: center bottom;
    /* Initial state: stacked */
    transform: rotate(calc(var(--i) * 2deg - 3deg)) translateY(0);
}

.card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Studio */
.studio {
    background-color: #111;
    color: #fff;
    padding: 150px var(--container-padding);
}

.studio-title {
    font-family: var(--font-serif);
    font-size: 6vw;
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 40px;
}

.studio-text {
    max-width: 600px;
    margin-left: auto;
    font-size: 1.5rem;
    line-height: 1.5;
    font-weight: 300;
}

.btn-arrow {
    display: inline-block;
    margin-top: 40px;
    border-bottom: 1px solid #fff;
    padding-bottom: 5px;
    transition: padding-bottom 0.3s ease;
}

.btn-arrow:hover {
    padding-bottom: 10px;
}

/* Footer */
.footer {
    padding: 100px var(--container-padding);
    background-color: var(--bg-color);
}

.footer-top {
    margin-bottom: 80px;
}

.footer-cta {
    font-family: var(--font-serif);
    font-size: 5vw;
    font-weight: 400;
    line-height: 1;
    margin-bottom: 30px;
}

.email-link {
    font-size: 2rem;
    border-bottom: 2px solid currentColor;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-col h4 {
    margin-bottom: 20px;
    text-transform: uppercase;
    font-size: 0.8rem;
    opacity: 0.6;
}

.footer-col li {
    margin-bottom: 10px;
}