/* ==================== ROOT VARIABLES ==================== */
:root {
    --color-primary: #1a1a1a;
    --color-bg-light: #f5f5f5;
    --color-bg-dark: #121212;
    --color-accent-light: #e0e0e0;
    --color-accent-dark: #333333;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --font-display: 'Syncopate', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-japanese: 'Noto Serif JP', serif;
}

/* ==================== BASE STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-light);
    color: var(--color-gray-900);
    transition: background-color 0.3s, color 0.3s;
}

body .dark, .dark body, html.dark body {
    color: white;
}

/* ==================== THEME TOGGLE (Removed) ==================== */

/* ==================== CONTAINER ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}
.dark .container, html.dark .container, html.dark body {
    background-color: #000000;
}

@media (min-width: 768px) {
    .container {
        padding: 6rem 3rem;
    }
}

/* ==================== HERO SECTION ==================== */
.hero-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 5rem;
    border-bottom: 1px solid var(--color-gray-300);
    padding-bottom: 3rem;
}

.dark .hero-section {
    border-bottom-color: var(--color-gray-800);
}

@media (min-width: 768px) {
    .hero-section {
        grid-template-columns: repeat(12, 1fr);
        margin-bottom: 8rem;
        padding-bottom: 5rem;
    }
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    font-size: 0.75rem;
    font-family: monospace;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
}

.dark .contact-info {
    color: var(--color-gray-400);
}

@media (min-width: 768px) {
    .contact-info {
        grid-column: span 3;
    }
}

.contact-item {
    margin-bottom: 0.5rem;
    color: inherit;
}

.resume-label {
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .resume-label {
        margin-top: 0;
    }
}

.resume-label a {
    color: inherit;
    text-decoration: none;
}

/* Vertical Name */
.vertical-name-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem 0;
}

@media (min-width: 768px) {
    .vertical-name-container {
        grid-column: span 3;
        align-items: flex-end;
        padding-right: 2rem;
        padding: 0;
    }
}

.vertical-name {
    font-family: var(--font-japanese);
    font-size: 2.5rem;
    line-height: 1;
    color: var(--color-gray-800);
    user-select: none;
    opacity: 0.8;
    margin-bottom: 1rem;
    text-align: center;
}

.dark .vertical-name {
    color: var(--color-gray-300);
}

@media (min-width: 768px) {
    .vertical-name {
        font-size: 6rem;
        margin-bottom: 0;
        position: absolute;
        right: 3rem;
        top: 0;
        height: 100%;
        writing-mode: vertical-rl;
        text-orientation: mixed;
    }
}

/* Hero Image */
.hero-image-container {
    position: relative;
    cursor: pointer;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero-image-container {
        grid-column: span 6;
    }
}

.hero-image-wrapper {
    aspect-ratio: 4/5;
    width: 100%;
    background-color: var(--color-gray-200);
    position: relative;
}

.dark .hero-image-wrapper {
    background-color: var(--color-gray-800);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.25);
    transition: all 0.7s ease-in-out;
}

.hero-image-container:hover .hero-image {
    filter: grayscale(0%) contrast(1);
}

.hero-label {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background-color: white;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: black;
}

.dark .hero-label {
    background-color: black;
    color: white;
}

/* ==================== ABOUT SECTION ==================== */
.about-section {
    margin-bottom: 5rem;
    padding-left: 0;
    position: relative;
}

@media (min-width: 768px) {
    .about-section {
        margin-bottom: 8rem;
        padding-left: 25%;
    }
}

.section-label {
    position: relative;
    margin-bottom: 1rem;
    font-size: 0.75rem;
    color: black;
    font-family: var(--font-japanese);
    letter-spacing: 0.2em;
}

.dark .section-label {
    color: rgb(228, 225, 225)
}

@media (min-width: 768px) {
    .section-label {
        position: absolute;
        left: 15%;
        top: 0;
        writing-mode: vertical-rl;
        text-orientation: mixed;
        margin-bottom: 0;
        letter-spacing: normal;
    }
}

.main-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: -0.05em;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--color-primary);
}

.dark .main-title {
    color: rgb(164, 160, 160);
}

@media (min-width: 768px) {
    .main-title {
        font-size: 6rem;
        line-height: 0.9;
    }
}

.title-accent {
    display: block;
    margin-left: 1rem;
    font-style: italic;
    font-family: serif;
    text-transform: lowercase;
    color: var(--color-gray-500);
}

.dark .title-accent {
    color: var(--color-gray-400);
}

@media (min-width: 768px) {
    .title-accent {
        margin-left: 6rem;
    }
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
    max-width: 100%;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
        margin-top: 4rem;
        max-width: 64rem;
    }
}

.about-description {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-600);
}

.dark .about-description {
    color: var(--color-gray-400);
}

.social-links {
    font-family: var(--font-japanese);
    font-size: 0.875rem;
    color: var(--color-gray-400);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.dark .social-links {
    color: var(--color-gray-600);
}

@media (min-width: 768px) {
    .social-links {
        align-self: end;
        flex-direction: column;
        gap: 0;
        font-size: 0.75rem;
    }
}

.social-links a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--color-gray-900);
}

.dark .social-links a:hover {
    color: var(--color-gray-100);
}

/* ==================== DIVIDER ==================== */
.divider {
    width: 100%;
    height: 1px;
    background-color: var(--color-gray-300);
    margin-bottom: 3rem;
}

.dark .divider {
    background-color: var(--color-gray-800);
}

@media (min-width: 768px) {
    .divider {
        margin-bottom: 5rem;
    }
}

/* ==================== PROJECTS SECTION ==================== */
.projects-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .projects-section {
        grid-template-columns: repeat(12, 1fr);
    }
}

.projects-header {
    grid-column: span 1;
}

@media (min-width: 768px) {
    .projects-header {
        grid-column: span 3;
    }
}

.projects-header-sticky {
    position: relative;
}

@media (min-width: 768px) {
    .projects-header-sticky {
        position: sticky;
        top: 3rem;
    }
}

.projects-title {
    font-size: 1.25rem;
    font-weight: bold;
    font-family: var(--font-display);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

@media (min-width: 768px) {
    .projects-list {
        grid-column: span 9;
        gap: 6rem;
    }
}

/* Project Card */
.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    cursor: pointer;
}

@media (min-width: 768px) {
    .project-card {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        align-items: start;
    }
}

.project-content {
    order: 2;
    padding-top: 0;
}

@media (min-width: 768px) {
    .project-content {
        order: 1;
        padding-top: 1rem;
    }
}

.project-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-gray-300);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.dark .project-meta {
    border-bottom-color: var(--color-gray-700);
}

.project-number,
.project-status {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

.project-title {
    font-size: 1.5rem;
    font-family: var(--font-display);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

@media (min-width: 768px) {
    .project-title {
        font-size: 1.875rem;
        margin-bottom: 1rem;
    }
}

.project-card:hover .project-title {
    color: var(--color-gray-600);
}

.dark .project-card:hover .project-title {
    color: var(--color-gray-300);
}

.project-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
    line-height: 1.6;
}

@media (min-width: 768px) {
    .project-description {
        margin-bottom: 1.5rem;
    }
}

.dark .project-description {
    color: var(--color-gray-400);
}

.project-tags {
    list-style: none;
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--color-gray-500);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .project-tags {
        display: block;
    }
}

.project-tags li {
    margin-bottom: 0.25rem;
}

.project-image-container {
    order: 1;
    overflow: hidden;
    aspect-ratio: 4/3;
    background-color: var(--color-gray-100);
}

.dark .project-image-container {
    background-color: var(--color-gray-900);
}

@media (min-width: 768px) {
    .project-image-container {
        order: 2;
    }
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: all 0.7s ease-out;
}

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

/* ==================== FOOTER ==================== */
.footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-gray-300);
}

@media (min-width: 768px) {
    .footer {
        margin-top: 8rem;
        padding-top: 3rem;
    }
}

.dark .footer {
    border-top-color: var(--color-gray-800);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(12, 1fr);
    }
}

.footer-label {
    font-size: 0.75rem;
    font-family: monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
}

.dark .footer-label {
    color: var(--color-gray-400);
}

@media (min-width: 768px) {
    .footer-label {
        grid-column: span 3;
    }
}

.footer-contact {
    grid-column: span 1;
}

@media (min-width: 768px) {
    .footer-contact {
        grid-column: span 6;
    }
}

.footer-email {
    font-size: 1.25rem;
    font-family: var(--font-display);
    color: inherit;
    text-decoration: none;
    transition: text-decoration 0.3s;
    word-break: break-all;
}

.footer-email:hover {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
}

@media (min-width: 768px) {
    .footer-email {
        font-size: 2.25rem;
        word-break: normal;
    }
}

.footer-social {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .footer-social {
        margin-top: 2rem;
    }
}

.footer-link {
    font-size: 0.875rem;
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.footer-link:hover {
    border-bottom-color: black;
}

.dark .footer-link:hover {
    border-bottom-color: white;
}

.footer-copyright-container {
    display: flex;
    justify-content: flex-start;
    align-items: flex-end;
}

@media (min-width: 768px) {
    .footer-copyright-container {
        justify-content: flex-end;
        grid-column: span 3;
    }
}

.footer-copyright {
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--color-gray-400);
}

.dark .footer-copyright {
    color: var(--color-gray-600);
}

.footer-year {
    width: 100%;
    text-align: left;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .footer-year {
        text-align: right;
        margin-top: 3rem;
    }
}

.year-label {
    font-size: 0.625rem;
    font-weight: bold;
    letter-spacing: 0.1em;
    color: var(--color-gray-800);
    text-transform: uppercase;
}

.dark .year-label {
    color: var(--color-gray-200);
}