/* ===== Variables ===== */
:root {
  --bg: #fafaf9;
  --fg: #1c1917;
  --fg-muted: #78716c;
  --accent: #7c3aed;
  --accent-light: #ede9fe;
  --border: #e7e5e4;
  --white: #ffffff;
  --card-bg: #ffffff;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic', sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  font-size: 16px;
}

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

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

ul {
  list-style: none;
}

/* ===== Typography ===== */
h1, h2, h3 {
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.125rem; }

/* ===== Layout ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 600;
}

.section-heading {
  margin-bottom: 48px;
}

/* ===== Navigation ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.05em;
}

.nav-logo span {
  color: var(--accent);
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-muted);
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  padding: 100px 0 80px;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
  font-weight: 600;
}

.hero-name {
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--fg-muted);
  margin-bottom: 24px;
  font-weight: 400;
}

.hero-desc {
  color: var(--fg-muted);
  margin-bottom: 40px;
  font-size: 0.9375rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: #6d28d9;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1.5px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--fg);
  background: var(--fg);
  color: var(--white);
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: 16px;
  width: 100%;
  object-fit: cover;
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 20px;
  border: 2px solid var(--accent-light);
  z-index: -1;
}

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

.about-text p {
  color: var(--fg-muted);
  margin-bottom: 16px;
  font-size: 0.9375rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 100px;
}

.profile-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

.profile-card-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.profile-card-item:last-child {
  border-bottom: none;
}

.profile-card-label {
  color: var(--fg-muted);
  min-width: 80px;
  font-weight: 500;
}

/* ===== Works Grid ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.work-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.work-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.work-card-body {
  padding: 20px;
}

.work-card-category {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 6px;
}

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

.work-card-desc {
  font-size: 0.8125rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ===== Featured works (2-col) ===== */
.works-grid-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.work-card-featured img {
  aspect-ratio: 16/9;
}

/* ===== Contact ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--fg-muted);
  font-size: 0.9375rem;
  margin-bottom: 32px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-link-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--fg-muted);
  transition: color 0.2s;
}

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

.contact-link-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

/* ===== Form ===== */
.form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
}

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

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--fg);
}

.form-label span {
  color: var(--accent);
  margin-left: 4px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--fg);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

/* ===== Page Header ===== */
.page-header {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--border);
}

.page-header p {
  color: var(--fg-muted);
  font-size: 1rem;
  max-width: 500px;
  margin-top: 12px;
}

/* ===== Hobbies ===== */
.hobby-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.hobby-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.hobby-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.07);
}

.hobby-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.hobby-card h3 {
  margin-bottom: 8px;
}

.hobby-card p {
  font-size: 0.8125rem;
  color: var(--fg-muted);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: 80px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--fg-muted);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--fg-muted);
  transition: color 0.2s;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-image {
    order: -1;
  }

  .hero-image img {
    max-height: 280px;
    width: 100%;
    object-fit: cover;
  }

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

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

  .works-grid-featured {
    grid-template-columns: 1fr;
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .nav-links {
    gap: 20px;
  }
}

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

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

  .form {
    padding: 24px;
  }
}