@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
    --bg-color: #fafafa;
    --text-color: #111111;
    --accent-color: #888888;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.5rem 5rem;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 10;
}

.logo {
    font-weight: 800;
    letter-spacing: 3px;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-links li a {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    transition: color 0.3s ease;
}

.nav-links li a:hover {
    color: var(--text-color);
}

/* Hero */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
}

.subtitle {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 5px;
    color: var(--accent-color);
    margin-bottom: 2rem;
}

.title {
    font-size: clamp(3rem, 10vw, 7.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 2.5rem;
}

.description {
    font-size: 1.1rem;
    color: var(--accent-color);
    max-width: 500px;
    margin: 0 auto;
}

/* Projects Section */
.projects {
    padding: 8rem 5rem;
    max-width: 1600px;
    margin: 0 auto;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 5rem;
    border-bottom: 1px solid #eaeaea;
    padding-bottom: 1.5rem;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 6rem 4rem;
}

.grid-item {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    cursor: pointer;
}

.img-wrapper {
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    background-color: #eee;
}

.img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1), filter 1s ease;
    filter: grayscale(100%) contrast(1.1);
}

.grid-item:hover .img-wrapper img {
    transform: scale(1.05);
    filter: grayscale(0%) contrast(1);
}

.project-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--accent-color);
}

/* Footer */
.footer {
    padding: 10rem 5rem 5rem;
    text-align: center;
    background-color: #111;
    color: #fff;
}

.footer h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    line-height: 1.3;
    margin-bottom: 3.5rem;
}

.contact-btn {
    display: inline-block;
    padding: 1.2rem 4rem;
    border: 1px solid #fff;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    transition: all 0.4s ease;
    margin-bottom: 8rem;
}

.contact-btn:hover {
    background-color: #fff;
    color: #111;
}

/* Contact Form */
.contact-form {
    max-width: 500px;
    margin: 3rem auto 6rem auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    padding: 1rem 0;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-bottom-color 0.4s ease;
    resize: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-bottom-color: #fff;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
}

.contact-form button[type="submit"] {
    margin-top: 2rem;
    margin-bottom: 0;
    background: transparent;
    cursor: pointer;
    width: 100%;
}

.copyright {
    font-size: 0.8rem;
    color: #666;
}

/* Scroll Reveal Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.2s;
}

@media screen and (max-width: 768px) {
    .navbar {
        padding: 1.5rem 2rem;
        flex-direction: column;
        gap: 1rem;
    }

    .projects {
        padding: 4rem 2rem;
    }

    .grid-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .footer {
        padding: 6rem 2rem 3rem;
    }
}