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

:root {
  --color-bg: #f8f7f4;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6b6b6b;
  --color-accent: #4a7c6f;
  --color-accent-light: #e8f2ef;
  --color-border: #e2e0db;
  --font-sans: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', sans-serif;
  --radius: 8px;
  --max-width: 900px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ===== Navigation ===== */
.nav {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.04em;
}

.nav__logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  color: var(--color-muted);
  font-weight: 500;
  transition: color 0.2s;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-accent);
  text-decoration: none;
}

/* ===== Main ===== */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px;
  width: 100%;
}

/* ===== Hero (index) ===== */
.hero {
  display: flex;
  align-items: center;
  gap: 56px;
  margin-bottom: 80px;
}

.hero__image {
  flex-shrink: 0;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--color-border);
}

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

.hero__text {}

.hero__name {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 8px;
}

.hero__name-en {
  font-size: 1rem;
  color: var(--color-muted);
  font-weight: 400;
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}

.hero__tagline {
  font-size: 1rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.hero__bio {
  color: var(--color-muted);
  font-size: 0.95rem;
  max-width: 480px;
}

/* ===== Section ===== */
.section {
  margin-bottom: 64px;
}

.section__title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* ===== Profile table ===== */
.profile-table {
  width: 100%;
  border-collapse: collapse;
}

.profile-table th,
.profile-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.93rem;
}

.profile-table th {
  width: 140px;
  color: var(--color-muted);
  font-weight: 500;
  background-color: var(--color-accent-light);
}

/* ===== Skills ===== */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  padding: 6px 16px;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Works grid ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.work-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.work-card__image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.work-card__body {
  padding: 20px;
}

.work-card__category {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.work-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.work-card__desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.6;
}

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

.hobby-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
}

.hobby-card__icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.hobby-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.hobby-card__desc {
  font-size: 0.82rem;
  color: var(--color-muted);
}

/* ===== Contact ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-info__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-info__label {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 2px;
}

.contact-info__value {
  font-size: 0.95rem;
  font-weight: 500;
}

.contact-form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.93rem;
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s;
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff;
  padding: 12px 32px;
  border-radius: 99px;
  border: none;
  cursor: pointer;
  font-size: 0.93rem;
  font-weight: 600;
  font-family: var(--font-sans);
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: #3a6358;
  text-decoration: none;
}

/* ===== Page Header (works/contact) ===== */
.page-header {
  margin-bottom: 48px;
}

.page-header__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-header__subtitle {
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .hero__name {
    font-size: 1.8rem;
  }

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

  .nav__links {
    gap: 20px;
  }
}