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

:root {
    --black: #000000;
    --white: #ffffff;
    --gray: #666666;
    --light-gray: #f5f5f5;
    --transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 2000px;
}

html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Arial', sans-serif;
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--black);
    overflow-y: scroll;
    height: 100%;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-decoration: none;
    text-align: center;
    border: 2px solid;
    transition: var(--transition);
    cursor: pointer;
    background: none;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

/* Light Button (dark text on light background) */
.btn-light {
    color: var(--black);
    border-color: var(--black);
    background: var(--white);
}

.btn-light::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--black);
    transition: var(--transition);
    z-index: -1;
}

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

.btn-light:hover::before {
    left: 0;
}

/* Dark Button (light text on dark background) */
.btn-dark {
    color: var(--white);
    border-color: var(--white);
    background: var(--black);
}

.btn-dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--white);
    transition: var(--transition);
    z-index: -1;
}

.btn-dark:hover {
    color: var(--black);
}

.btn-dark:hover::before {
    left: 0;
}

/* Outline Button Light */
.btn-outline-light {
    color: var(--black);
    border-color: var(--black);
    background: transparent;
}

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

/* Outline Button Dark */
.btn-outline-dark {
    color: var(--white);
    border-color: var(--white);
    background: transparent;
}

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

/* Button Sizes */
.btn-sm {
    padding: 0.75rem 1.5rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: 1rem;
}

/* Full Width Button */
.btn-block {
    display: block;
    width: 100%;
}

/* Disabled State */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Responsive Button Adjustments */
@media (max-width: 768px) {
    .btn {
        padding: 0.875rem 1.75rem;
        font-size: 0.85rem;
    }
    
    .btn-sm {
        padding: 0.625rem 1.25rem;
        font-size: 0.75rem;
    }
    
    .btn-lg {
        padding: 1rem 2rem;
        font-size: 0.9rem;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    /* background: var(--white); */
    background: transparent;
    z-index: 1000;
    padding: 2rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 1.5rem 0;
    /* box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1); */
    background: transparent;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 4rem;
    display: flex;
    /* justify-content: space-between;
    align-items: center; */
    flex-direction: column;
    align-items: flex-start;
    gap: 2em;
}

.logo {
    font-size: 6rem;
    /* font-weight: 400; */
    /* color: var(--black); */
    /* letter-spacing: 0.05em; */

    /* font-size: clamp(4rem, 12vw, 10rem); */
    font-weight: 200;
    line-height: 0.95;
    /* margin-bottom: 2rem; */
    color: var(--white);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.2rem;
    flex-direction: column;
    align-items: flex-start;
}

/* .nav-menu li {
    margin: 0;
    padding: 0;
} */

.nav-link {
    text-decoration: none;
    color: var(--black);
    font-size: 0.9rem;
    line-height: 1;
    font-weight: 400;
    letter-spacing: 0.05em;
    transition: var(--transition);
    display: block;
    padding:  0;
    color: var(--white);
}

.nav-link.divider {
    padding-top: 1rem;
}
/* todo */
.nav-link.withBg {
    background-color: var(--black);
    color: var(--white);
    padding: 0.15rem;
}

.nav-link:hover {
    color: var(--white);
    letter-spacing: 0.2rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
}

.hamburger span {
    width: 24px;
    height: 1px;
    background: var(--black);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--white);
    padding: 0 4rem;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    overflow: hidden;
}

.hero video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3));
    z-index: 2;
}

.hero-content {
    text-align: center;
    max-width: var(--max-width);
    position: relative;
    z-index: 3;
}

.hero-title {
    font-size: clamp(8rem, 12vw, 10rem);
    font-weight: 400;
    line-height: 0.95;
    margin-bottom: 2rem;
    color: var(--white);
    letter-spacing: -0.02em;
}

.hero-title .word {
    display: block;
    opacity: 0;
    transform: translateY(100px);
    animation: fadeInUp 1s ease-out forwards;
}

.hero-title .word:nth-child(1) {
    animation-delay: 0.2s;
}

.hero-title .word:nth-child(2) {
    animation-delay: 0.4s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--white);
    font-weight: 300;
    letter-spacing: 0.1em;
    opacity: 0;
    animation: fadeIn 1s ease-out 0.8s forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Work Grid Section */
.work-grid {
    min-height: 100vh;
    /* padding: 8rem 0; */
    /* background: var(--white); */
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    align-items: center;

}

/* todo */
.grid-container {
    /* max-width: 2000px; */
    width: 100%;
    height: 100vh;
    margin: 0 auto;
    padding: 0 0%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0rem;
}

.project-item {
    opacity: 0;
    transform: translateY(60px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.project-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    z-index: 10;
    width: 80%;
}

.project-content h3 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.project-content p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    opacity: 0.9;
}

.project-item.first {
    background:
        linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)),
        var(--bg-image, url(images/left.jpg)) center center;
    background-size: cover; /* Makes image cover entire area */
    background-repeat: no-repeat; /* Prevents image repetition */
    background-position: center center; /* Centers the image */
}

/* .project-item.first {
    background:
        linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)),
        url(images/left.jpg) center center;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
} */

/* Type 2: Image slideshow with fade effect */
.project-item.slideshow {
    position: relative;
}

.project-item.slideshow .slide-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.project-item.slideshow .slide-image.active {
    opacity: 1;
}

/* Type 3: Grayscale to color on hover */
.project-item.grayscale-hover {
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    transition: var(--transition);
}

.project-item.grayscale-hover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    filter: grayscale(100%);
    transition: opacity 0.6s ease;
    z-index: 1;
}

.project-item.grayscale-hover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, transparent 30%, rgba(0, 0, 0, 0.7) 100%);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: 2;
}

.project-item.grayscale-hover:hover::before {
    opacity: 0;
}

.project-item.grayscale-hover:hover::after {
    opacity: 1;
}

.project-item.grayscale-hover > * {
    position: relative;
    z-index: 5;
}

/* Type 4: Video background */
.project-item.video-bg {
    position: relative;
}

.project-item.video-bg video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.project-item.video-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3));
    z-index: 2;
}

.project-item.video-bg > *:not(video) {
    position: relative;
    z-index: 3;
}
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
.project-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-link {
    text-decoration: none;
    color: var(--black);
    display: block;
}

.project-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--light-gray);
    margin-bottom: 1.5rem;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    filter: grayscale(100%);
}

.project-link:hover .project-img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.project-details {
    padding: 0.5rem 0;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.project-category {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 300;
    letter-spacing: 0.05em;
}

/* Contact Section */
.contact-section {
    min-height: 5vh; 
    /* padding: 12rem 4rem; */
    background: var(--white);
    text-align: center;
    scroll-snap-align: start; 
    scroll-snap-stop: always;
    display: flex; 
    align-items: center; 
    justify-content: center;
    width: 100% 
}

.contact-content {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: center;
    text-align: left;
}

.contact-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 400;
    margin-bottom: 0;
    letter-spacing: -0.02em;
    opacity: 0;
    transform: translateY(40px);
    transition: var(--transition);
}

.contact-title.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-email {
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--black);
    text-decoration: none;
    font-weight: 300;
    letter-spacing: -0.01em;
    transition: var(--transition);
    display: inline-block;
    opacity: 0;
    transform: translateY(40px);
}

.contact-email.visible {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.2s;
}

.contact-email:hover {
    color: var(--gray);
}

.contact-content .link {
    display: block;
        font-size: 0.9rem;
    color: var(--black);
    text-decoration: none;
    font-weight: 300;
    transition: var(--transition);
    margin-right: 1rem;
}

.contact-content .link:hover {
    font-weight: 500;
}

.padded-section {
    padding: 4rem;
    height: 100%;
}

.padded-section.left {
    border-width: 2px 2px 0px 0px;
    border-style: solid;
    border-color: var(--black);
}

.padded-section.right {
    border-width: 2px 0px 0px 0px;
    border-style: solid;
    border-color: var(--black);
}

/* Footer */
.footer {
    background: var(--white);
    /* padding: 4rem; */
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    scroll-snap-align: none;
}

.footer a {
    font-size: 0.9rem;
    color: var(--black);
    text-decoration: none;
    font-weight: 300;
    transition: var(--transition);
    display: inline-block;
    margin-right: 1rem;
}

footer a:hover {
    font-weight: 500;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    /* justify-content: space-between; */
    align-items: center;
}

.footer-left {
    border-width: 2px 2px 0px 0px;
    border-style: solid;
    border-color: var(--black);
    width: 100%;
    height: 100%;
    padding: 4rem;
}

.footer-left p {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 300;
}

.footer-right {
    padding:  4rem;
    border-width: 2px 0 0px 0px;
    border-style: solid;
    border-color: var(--black);
    width: 100%;
    height: 100%;
    display:grid;
    gap: 0.5rem;
    justify-content: end;
    align-content: end;
    text-align: right;
}

.footer-link {
    font-size: 0.9rem;
    color: var(--black);
    text-decoration: none;
    font-weight: 300;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--gray);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .grid-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 2rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 3rem 0;
        gap: 2rem;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hero {
        padding: 0 2rem;
    }

    .hero-title {
        font-size: clamp(3rem, 10vw, 6rem);
    }

    .grid-container {
        padding: 0 2rem;
        gap: 2.5rem;
    }

    .contact-section {
        padding: 8rem 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;    
    }

    .contact-title {
        margin-bottom: 2rem;
    }

    .footer {
        padding: 3rem 2rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-right {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1.5rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .grid-container {
        padding: 0 1.5rem;
        gap: 2rem;
    }

    .project-title {
        font-size: 1.25rem;
    }

    .contact-section {
        padding: 6rem 1.5rem;
    }

    .contact-title {
        font-size: 2.5rem;
    }

    .contact-email {
        font-size: 1.25rem;
    }

    .footer {
        padding: 2rem 1.5rem;
    }
}

/* Smooth Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--white);
}

::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--black);
}

/* Selection */
::selection {
    background: var(--black);
    color: var(--white);
}

::-moz-selection {
    background: var(--black);
    color: var(--white);
}