/* ==================== */
/* Reset & Base */
/* ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #fff;
    color: #000;
    font-size: 16px;
    line-height: 1.5;
    overflow: hidden;
}

body.loaded {
    overflow: auto;
}

/* ==================== */
/* Grid Lines */
/* ==================== */
.grid-lines {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 4vw;
    pointer-events: none;
    z-index: 1001;
}

.grid-line {
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.8s ease;
}

body.loaded .grid-line {
    background: rgba(0, 0, 0, 0.06);
}

@media (max-width: 768px) {
    .grid-lines {
        padding: 0 6vw;
    }

    .grid-line:nth-child(2),
    .grid-line:nth-child(4) {
        display: none;
    }
}

/* ==================== */
/* Intro Overlay */
/* ==================== */
.intro-overlay {
    position: fixed;
    inset: 0;
    background: #000;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s cubic-bezier(0.22, 0.61, 0.36, 1),
                visibility 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.intro-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.intro-content {
    text-align: center;
    color: #fff;
}

.intro-name {
    font-size: clamp(48px, 12vw, 120px);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 24px;
    overflow: hidden;
}

.intro-line {
    display: block;
    opacity: 0;
    transform: translateY(100%);
    animation: revealLine 0.8s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

.intro-line:nth-child(1) {
    animation-delay: 0.2s;
}

.intro-line:nth-child(2) {
    animation-delay: 0.35s;
}

.intro-tagline {
    font-size: clamp(14px, 2vw, 18px);
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.6s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
    animation-delay: 0.6s;
    color: rgba(255, 255, 255, 0.6);
}

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

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

/* ==================== */
/* Main Content */
/* ==================== */
.main {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 4vw;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.22, 0.61, 0.36, 1) 0.2s,
                transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1) 0.2s;
    position: relative;
    z-index: 1;
}

body.loaded .main {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .main {
        padding: 0 6vw;
    }
}

/* ==================== */
/* Header / Navigation */
/* ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 4vw;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

@media (max-width: 768px) {
    .header {
        padding: 16px 6vw;
    }
}

.site-name {
    font-size: 18px;
    font-weight: 400;
    color: #000;
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: opacity 0.2s ease;
}

.site-name:hover {
    opacity: 0.5;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

.nav-link {
    font-size: 13px;
    font-weight: 500;
    color: #000;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity 0.2s ease;
}

.nav-link:hover {
    opacity: 0.5;
}

.social-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.social-link {
    font-size: 13px;
    font-weight: 500;
    color: #000;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity 0.2s ease;
}

.social-link:hover {
    opacity: 0.5;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s ease;
}

.social-icon:hover {
    opacity: 0.5;
}

.social-icon img {
    width: 20px;
    height: 20px;
}

.social-icon .icon-dark {
    display: none;
}

.social-icon .icon-light {
    display: block;
}

@media (max-width: 480px) {
    .social-nav {
        display: none;
    }
}

/* ==================== */
/* Intro Section */
/* ==================== */
.intro {
    padding-top: 180px;
    padding-bottom: 120px;
    max-width: 900px;
}

.intro-text {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 32px;
}

.intro-role {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

@media (max-width: 768px) {
    .intro {
        padding-top: 140px;
        padding-bottom: 80px;
    }

    .intro-text {
        font-size: 24px;
    }

    .intro-role {
        font-size: 14px;
    }
}

/* ==================== */
/* Work / Projects */
/* ==================== */
.work {
    padding-bottom: 100px;
}

.project {
    margin-bottom: 100px;
}

.project:last-child {
    margin-bottom: 0;
}

.project-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.project-title a {
    color: #000;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.project-title a:hover {
    opacity: 0.5;
}

.project-desc {
    font-size: 15px;
    color: #666;
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 24px;
    letter-spacing: 0.01em;
}

.project-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    background: #f5f5f5;
}

video.project-image {
    object-fit: cover;
}

.project-image.placeholder {
    background: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 13px;
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .project {
        margin-bottom: 80px;
    }

    .project-title {
        font-size: 12px;
    }

    .project-desc {
        font-size: 14px;
    }
}

/* ==================== */
/* About Section */
/* ==================== */
.about {
    padding: 100px 0;
    border-top: 1px solid #e5e5e5;
}

.section-title {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 40px;
}

.about-content {
    max-width: 600px;
}

.about-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
    letter-spacing: 0.01em;
}

.about-content p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .about {
        padding: 80px 0;
    }

    .about-content p {
        font-size: 14px;
    }
}

/* ==================== */
/* Contact Section */
/* ==================== */
.contact {
    padding: 100px 0;
    border-top: 1px solid #e5e5e5;
}

.contact-content p {
    font-size: 15px;
    color: #666;
    margin-bottom: 16px;
}

.contact-email {
    display: inline-block;
    font-size: 15px;
    color: #000;
    text-decoration: none;
    margin-bottom: 24px;
    transition: opacity 0.2s ease;
}

.contact-email:hover {
    opacity: 0.5;
}

.contact-social {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.contact-social a {
    font-size: 13px;
    font-weight: 500;
    color: #000;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity 0.2s ease;
}

.contact-social a:hover {
    opacity: 0.5;
}

.contact-location {
    font-size: 14px;
    color: #999;
}

@media (max-width: 768px) {
    .contact {
        padding: 80px 0;
    }

    .contact-content p,
    .contact-email {
        font-size: 14px;
    }
}

/* ==================== */
/* Footer */
/* ==================== */
.footer {
    padding: 32px 4vw;
    border-top: 1px solid #e5e5e5;
}

.footer p {
    font-size: 12px;
    color: #999;
    letter-spacing: 0.02em;
}

@media (max-width: 768px) {
    .footer {
        padding: 24px 6vw;
    }
}

/* ==================== */
/* Theme Toggle */
/* ==================== */
.theme-toggle {
    font-size: 13px;
    font-weight: 500;
    color: #000;
    background: none;
    border: 1px solid #000;
    padding: 6px 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: #000;
    color: #fff;
}

/* ==================== */
/* Dark Mode */
/* ==================== */
body.dark-mode {
    background-color: #000;
    color: #fff;
}

body.dark-mode .header {
    background: rgba(0, 0, 0, 0.95);
}

body.dark-mode .site-name {
    color: #fff;
}

body.dark-mode .nav-link,
body.dark-mode .social-link {
    color: #fff;
}

body.dark-mode .social-icon .icon-light {
    display: none;
}

body.dark-mode .social-icon .icon-dark {
    display: block;
}

body.dark-mode .theme-toggle {
    color: #fff;
    border-color: #fff;
}

body.dark-mode .theme-toggle:hover {
    background: #fff;
    color: #000;
}

body.dark-mode .grid-line {
    background: rgba(255, 255, 255, 0.1);
}

body.dark-mode.loaded .grid-line {
    background: rgba(255, 255, 255, 0.06);
}

body.dark-mode .intro-text {
    color: #fff;
}

body.dark-mode .intro-role,
body.dark-mode .project-desc,
body.dark-mode .about-content p,
body.dark-mode .contact-content p {
    color: #999;
}

body.dark-mode .project-title,
body.dark-mode .project-title a,
body.dark-mode .section-title,
body.dark-mode .contact-email,
body.dark-mode .contact-social a {
    color: #fff;
}

body.dark-mode .about,
body.dark-mode .contact,
body.dark-mode .footer {
    border-top-color: #333;
}

body.dark-mode .footer p {
    color: #666;
}

body.dark-mode .project-image {
    background: #1a1a1a;
}