/* ===========================
   shion lab - Portfolio CSS
   =========================== */

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

:root {
    --color-bg: #FAF8F5;
    --color-dark: #2C1F1A;
    --color-primary: #C4714A;
    --color-primary-light: #D9967A;
    --color-accent: #C9A96E;
    --color-text: #33261F;
    --color-text-light: #7A6358;
    --color-white: #FFFFFF;
    --color-surface: #F5EDE8;
    --font-display: 'Cormorant Garamond', 'Georgia', serif;
    --font-body: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --shadow-sm: 0 2px 8px rgba(196, 113, 74, 0.1);
    --shadow-md: 0 8px 32px rgba(196, 113, 74, 0.15);
    --shadow-lg: 0 20px 60px rgba(196, 113, 74, 0.2);
    --radius: 12px;
    --radius-sm: 6px;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    font-size: 15px;
    overflow-x: hidden;
}

/* ---------- Typography ---------- */
h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.3;
}

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

img {
    max-width: 100%;
    display: block;
}

/* ---------- Navigation ---------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 60px;
    background: rgba(250, 249, 247, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(107, 91, 142, 0.1);
    transition: padding var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
    padding: 14px 60px;
    box-shadow: var(--shadow-sm);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: 0.02em;
}

.logo-light {
    color: var(--color-primary);
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    position: relative;
    transition: color var(--transition);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition);
}

.nav-menu a:hover {
    color: var(--color-primary);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* ---------- Hamburger ---------- */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Mobile Menu ---------- */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        padding: 16px 24px;
    }

    .nav.scrolled {
        padding: 12px 24px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 260px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 36px;
        transition: right 0.4s ease;
        box-shadow: var(--shadow-lg);
    }

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

    .nav-menu a {
        font-size: 1.2rem;
        color: var(--color-dark);
    }
}

/* ---------- Hero Section ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 40px 80px;
    position: relative;
    overflow: hidden;
    background-image: url('../images/main.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.25);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(237, 242, 235, 0.25) 0%, transparent 60%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 300;
    color: var(--color-dark);
    letter-spacing: 0.04em;
    margin-bottom: 24px;
    line-height: 1.1;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 12px rgba(255,255,255,0.6);
}

.hero p {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: var(--color-text);
    max-width: 580px;
    margin-bottom: 48px;
    line-height: 2;
    position: relative;
    z-index: 1;
}

.hero .cta-button {
    position: relative;
    z-index: 1;
}

.cta-button {
    display: inline-block;
    padding: 16px 48px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.12em;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(107, 91, 142, 0.3);
}

.cta-button:hover {
    background: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(26, 26, 46, 0.25);
}

/* ---------- Fade In Animation ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeInUp 0.9s ease forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.2s; }
.fade-in:nth-child(2) { animation-delay: 0.45s; }
.fade-in:nth-child(3) { animation-delay: 0.7s; }

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

/* ---------- Section Base ---------- */
.section {
    padding: 100px 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-heading {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 300;
    color: var(--color-dark);
    margin-bottom: 60px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(107, 91, 142, 0.15);
}

/* ---------- Profile Section ---------- */
.profile-content {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 60px;
    align-items: start;
}

.profile-avatar {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(107, 91, 142, 0.2);
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-text h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-family: var(--font-body);
}

.profile-text p {
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 2;
}

.profile-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.highlight-tag {
    padding: 6px 18px;
    background: var(--color-surface);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    border: 1px solid rgba(107, 91, 142, 0.15);
}

/* ---------- Skills Section ---------- */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 20px;
}

.skill-card {
    background: var(--color-bg);
    border: 1px solid rgba(107, 91, 142, 0.12);
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.skill-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(107, 91, 142, 0.3);
}

.skill-icon {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.skill-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 14px;
}

.skill-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.9;
}

/* ---------- Tools ---------- */
.tools-list {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.tool-item {
    padding: 10px 24px;
    background: var(--color-white);
    border: 1px solid rgba(107, 91, 142, 0.18);
    border-radius: 50px;
    font-size: 0.88rem;
    color: var(--color-text);
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.tool-item:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* ---------- Portfolio Section ---------- */
.portfolio-category {
    margin-bottom: 70px;
}

.category-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--color-primary-light);
    letter-spacing: 0.1em;
    margin-bottom: 28px;
    padding-bottom: 10px;
    border-bottom: 1px dashed rgba(107, 91, 142, 0.2);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.portfolio-item {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: pointer;
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.portfolio-image {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-surface) 0%, rgba(201, 169, 110, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.placeholder-icon {
    font-size: 2.8rem;
    opacity: 0.4;
}

.portfolio-info {
    padding: 20px 24px;
}

.portfolio-info h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 6px;
}

.portfolio-info p {
    font-size: 0.82rem;
    color: var(--color-text-light);
}

/* ---------- Career Section ---------- */
.career-timeline {
    position: relative;
    padding-left: 32px;
}

.career-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
}

.career-item {
    position: relative;
    margin-bottom: 48px;
    padding-left: 32px;
}

.career-item::before {
    content: '';
    position: absolute;
    top: 8px;
    left: -5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid var(--color-bg);
    box-shadow: 0 0 0 3px rgba(107, 91, 142, 0.2);
}

.career-period {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    color: var(--color-primary-light);
    margin-bottom: 8px;
    font-weight: 500;
}

.career-item h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 10px;
}

.career-item p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.9;
}

/* ---------- Certificates Section ---------- */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.cert-item {
    padding: 28px 20px;
    text-align: center;
    background: var(--color-white);
    border: 1px solid rgba(107, 91, 142, 0.12);
    border-radius: var(--radius);
    font-size: 0.88rem;
    color: var(--color-text);
    line-height: 1.7;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.cert-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* ---------- Contact Section ---------- */
.contact-section {
    background: linear-gradient(160deg, #F5EDE8 0%, #FAF8F5 100%);
    padding: 100px 60px;
    text-align: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 40px;
}

.contact-item {
    font-size: 1rem;
    color: var(--color-text-light);
    letter-spacing: 0.04em;
}

.social-links {
    display: flex;
    gap: 20px;
    margin-top: 16px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid rgba(107, 91, 142, 0.15);
    border-radius: 50%;
    font-size: 1.2rem;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.social-link:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

/* ---------- Footer ---------- */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
    padding: 28px 40px;
    font-size: 0.82rem;
    letter-spacing: 0.06em;
}

/* ---------- Scroll To Top ---------- */
.scroll-top {
    position: fixed;
    bottom: 36px;
    right: 36px;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 900;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top:hover {
    background: var(--color-dark);
}

/* ---------- Reveal on Scroll ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .section {
        padding: 80px 40px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .profile-content {
        grid-template-columns: 180px 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 24px;
    }

    .contact-section {
        padding: 60px 24px;
    }

    .profile-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .profile-avatar {
        margin: 0 auto;
    }

    .profile-highlights {
        justify-content: center;
    }

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

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

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

    .cta-button {
        padding: 14px 36px;
    }

    .scroll-top {
        bottom: 20px;
        right: 20px;
    }
}