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

:root {
  --color-bg: #fafaf7;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #666666;
  --color-accent: #2d5f4e;
  --color-accent-light: #e8f0ec;
  --color-border: #e5e5e0;
  --max-width: 1080px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.04);
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.nav-brand {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-menu a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  padding: 0.25rem 0;
}

.nav-menu a:hover {
  color: var(--color-text);
  opacity: 1;
}

.nav-menu a.is-active {
  color: var(--color-text);
}

.nav-menu a.is-active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* Main layout */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

.section {
  margin-bottom: 5rem;
}

.section:last-child {
  margin-bottom: 0;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 5rem;
}

.hero-photo {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 1 / 1;
}

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

.hero-eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* Generic headings */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  font-size: 0.9375rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-accent);
  color: #ffffff;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45, 95, 78, 0.25);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
  background-color: var(--color-accent-light);
  box-shadow: none;
}

/* About section */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background-color: var(--color-surface);
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.about-card-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.about-card-text {
  color: var(--color-text);
  font-size: 0.9375rem;
}

/* Works grid */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

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

.work-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.work-card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-accent-light);
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.work-card-body {
  padding: 1.5rem;
}

.work-card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.work-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.work-card-text {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* Hobbies */
.hobby-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.hobby-list li {
  background-color: var(--color-accent-light);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.hobby-list .hobby-icon {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.875rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
}

.contact-info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.5rem;
}

.contact-info dt {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-top: 0.125rem;
}

.contact-info dd {
  font-size: 0.9375rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-field label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-field input,
.form-field textarea {
  font: inherit;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-surface);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

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

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-footer .footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Responsive */
@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3.5rem;
  }

  .hero-photo {
    max-width: 280px;
    margin: 0 auto;
  }

  main {
    padding: 2.5rem 1.25rem 4rem;
  }

  .nav-menu {
    gap: 1.25rem;
  }

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