/* ===== CSS VARIABLES & RESET ===== */
@import url('https://fonts.googleapis.com/css2?family=Zen+Old+Mincho:wght@400;500;600;700&family=Noto+Serif+JP:wght@300;400;500;600;700&display=swap');

:root {
    /* Japanese Calligraphy Theme - Sumi-e inspired */
    --color-primary: #1a1a2e;
    --color-primary-light: #2d2d44;
    --color-secondary: #4a4a5a;
    --color-text: #1a1a2e;
    --color-text-light: #6b6b7a;
    --color-bg: #faf9f7;
    --color-bg-dark: #1a1a2e;
    --color-accent: #7eb8da;
    /* Baby blue */
    --color-accent-light: #a8d4ea;
    --color-accent-dark: #5a9bc4;
    --color-white: #ffffff;
    --color-ink: #2d2d2d;
    --color-paper: #f5f3ef;
    /* Japanese-inspired typography */
    --font-heading: 'Zen Old Mincho', 'Noto Serif JP', serif;
    --font-body: 'Inter', 'Noto Sans JP', sans-serif;
    --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 4px 20px rgba(26, 26, 46, 0.1);
    --shadow-lg: 0 8px 40px rgba(26, 26, 46, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--color-bg-dark);
    color: var(--color-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 4px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 600;
    color: inherit;
    letter-spacing: 2px;
}

.section-subtitle {
    color: var(--color-text-light);
    margin-top: 16px;
    max-width: 600px;
    margin-inline: auto;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

/* Japanese brush stroke decoration */
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    margin: 20px auto 0;
    border-radius: 2px;
}

.glass-card {
    background: var(--color-white);
    border: 1px solid rgba(26, 26, 46, 0.08);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--color-accent);
    transition: height var(--transition);
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.glass-card:hover::before {
    height: 100%;
}

.section-dark .glass-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 500;
    background: rgba(126, 184, 218, 0.15);
    color: var(--color-accent-dark);
    border-radius: 2px;
    margin-right: 8px;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.section-dark .tag {
    background: rgba(126, 184, 218, 0.2);
    color: var(--color-accent-light);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes brushStroke {
    from {
        width: 0;
    }

    to {
        width: 60px;
    }
}

@keyframes inkDrop {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.05);
        opacity: 0.4;
    }
}

.animate-fade-up {
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(250, 249, 247, 0.98);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled .nav-logo,
.navbar.scrolled .nav-link {
    color: var(--color-primary);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 600;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-link {
    font-family: var(--font-heading);
    color: var(--color-white);
    text-decoration: none;
    font-weight: 400;
    font-size: 14px;
    letter-spacing: 1px;
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-cta {
    background: var(--color-accent);
    color: var(--color-primary) !important;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
}

.nav-cta:hover {
    background: var(--color-white);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    margin: 6px 0;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--color-primary);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(160deg, var(--color-primary) 0%, #252540 50%, var(--color-primary) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: inkDrop 10s ease-in-out infinite;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: var(--color-accent);
    opacity: 0.15;
    top: 5%;
    right: 5%;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent-light);
    opacity: 0.1;
    bottom: 10%;
    left: 5%;
    animation-delay: 3s;
}

/* Japanese pattern overlay */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(126, 184, 218, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(126, 184, 218, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 24px;
}

.hero-greeting {
    font-family: var(--font-heading);
    font-size: 16px;
    color: var(--color-accent);
    margin-bottom: 16px;
    letter-spacing: 4px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 12vw, 7rem);
    font-weight: 600;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: 8px;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    color: var(--color-accent);
    font-weight: 400;
    margin-bottom: 24px;
    letter-spacing: 3px;
}

.hero-tagline {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    max-width: 500px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-accent);
    text-decoration: none;
    font-size: 20px;
}

.scroll-arrow {
    display: block;
    animation: fadeUp 1.5s infinite;
}

/* ===== ABOUT ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-placeholder,
.about-image-actual {
    width: 100%;
    max-width: 320px;
    aspect-ratio: 3/4;
    background: var(--color-paper);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.about-image-actual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-intro {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.about-content p {
    margin-bottom: 16px;
    color: var(--color-secondary);
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    display: block;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

/* ===== EXPERIENCE ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-accent), rgba(126, 184, 218, 0.2));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: -46px;
    top: 24px;
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    border: 3px solid var(--color-bg-dark);
}

.timeline-content {
    padding: 24px 28px;
}

.timeline-date {
    font-family: var(--font-heading);
    font-size: 13px;
    color: var(--color-accent);
    font-weight: 500;
    letter-spacing: 1px;
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin: 8px 0;
    color: var(--color-white);
    letter-spacing: 1px;
}

.timeline-company {
    color: var(--color-accent-light);
    font-weight: 500;
    margin-bottom: 12px;
    font-size: 14px;
}

.timeline-content p {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 16px;
    font-size: 15px;
}

.timeline-tags {
    margin-top: 12px;
}

/* ===== PROJECTS ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.project-card {
    padding: 32px;
    text-align: center;
}

.project-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.project-card p {
    color: var(--color-secondary);
    margin-bottom: 20px;
    font-size: 15px;
}

.project-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    color: var(--color-accent-dark);
    font-size: 13px;
    font-weight: 500;
}

/* ===== SKILLS ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.skill-category {
    text-align: center;
    padding: 28px 20px;
}

.skill-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.skill-category h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.75);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 14px;
}

.tools-section {
    text-align: center;
}

.tools-title {
    font-family: var(--font-heading);
    color: var(--color-white);
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.tools-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tool-badge {
    padding: 10px 20px;
    background: rgba(126, 184, 218, 0.1);
    border: 1px solid rgba(126, 184, 218, 0.2);
    border-radius: 2px;
    font-size: 13px;
    color: var(--color-accent-light);
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.tool-badge:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
}

/* ===== HOBBIES ===== */
.hobbies-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 700px;
    margin: 0 auto;
}

.subsection-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 24px;
    letter-spacing: 2px;
    text-align: center;
}

.hobby-cards {
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 12px;
}

.hobby-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 14px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    min-width: 80px;
}

.hobby-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.hobby-card span:first-child {
    font-size: 28px;
}

.hobby-card span:last-child {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.5px;
}

/* Photo gallery in hobbies */
.photo-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.photo-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    aspect-ratio: 4/3;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.photo-item:hover img {
    transform: scale(1.05);
}

/* ===== CONTACT ===== */
.contact-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.social-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    color: var(--color-white);
    text-decoration: none;
    font-family: var(--font-heading);
    font-size: 15px;
    letter-spacing: 1px;
    transition: all var(--transition);
}

.social-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.social-btn.linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
}

.social-btn.instagram:hover {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    border-color: #e6683c;
}

.social-btn.twitter:hover {
    background: #1a1a2e;
    border-color: var(--color-accent);
}

.social-icon {
    font-size: 18px;
    font-weight: 600;
}

.contact-info-row {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.contact-info-row p {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
}

.contact-icon {
    font-size: 24px;
}

.contact-item h4 {
    color: var(--color-white);
    margin-bottom: 4px;
    font-family: var(--font-heading);
    letter-spacing: 1px;
}

.contact-item a,
.contact-item p {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 14px;
}

.contact-item a:hover {
    color: var(--color-accent);
}

.contact-form {
    padding: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-white);
    font-size: 14px;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 15px;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.08);
}

/* ===== FOOTER ===== */
.footer {
    background: #0f0f1a;
    color: var(--color-white);
    padding: 60px 0 20px;
    position: relative;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 32px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    display: block;
    letter-spacing: 2px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    margin-top: 8px;
    font-size: 13px;
}

.footer-nav {
    display: flex;
    gap: 28px;
}

.footer-nav a {
    font-family: var(--font-heading);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: var(--transition);
    font-size: 13px;
    letter-spacing: 1px;
}

.footer-nav a:hover {
    color: var(--color-accent);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
}

.footer-social a:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-image-placeholder,
    .about-image-actual {
        margin: 0 auto;
    }

    .about-stats {
        justify-content: center;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .photo-gallery {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-primary);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        transition: right var(--transition);
    }

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

    .nav-toggle {
        display: block;
        z-index: 1001;
    }

    .section {
        padding: 60px 0;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

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

    .hero-title {
        letter-spacing: 4px;
    }
}