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

:root {
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-primary: #2d6a4f;
  --color-primary-light: #52b788;
  --color-accent: #d4a853;
  --color-text: #1a1a1a;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --font-sans: 'Helvetica Neue', Arial, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  --radius: 12px;
  --shadow: 0 2px 16px rgba(0,0,0,0.07);
  --max-width: 900px;
}

html { scroll-behavior: smooth; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--color-primary-light); }

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

/* ===== Navigation ===== */
.nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 8px rgba(0,0,0,0.05);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: 0.03em;
}
.nav-logo:hover { color: var(--color-primary); }

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ===== Page Wrapper ===== */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 60px 24px 100px;
}

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 60px;
  align-items: center;
  padding: 80px 0 60px;
}

.hero-text h1 {
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.hero-text .tagline {
  font-size: 1.05rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-text p {
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 460px;
}

.hero-image img {
  border-radius: 50%;
  width: 200px;
  height: 200px;
  object-fit: cover;
  border: 4px solid var(--color-border);
  box-shadow: var(--shadow);
}

/* ===== Section ===== */
.section {
  margin-top: 60px;
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
  display: inline-block;
}

/* ===== About Cards ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.about-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.about-card .label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.about-card .value {
  font-size: 0.95rem;
  color: var(--color-text);
}

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

.skill-tag {
  background: #e9f5ee;
  color: var(--color-primary);
  border: 1px solid #b7dfca;
  border-radius: 100px;
  padding: 5px 16px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Works Grid ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

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

.work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.11);
}

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

.work-card-body {
  padding: 18px;
}

.work-card-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.work-card-body p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.work-tag {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ===== Hobbies ===== */
.hobbies-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.hobby-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  box-shadow: var(--shadow);
}

.hobby-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
}

.hobby-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.hobby-info p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== Contact ===== */
.contact-intro {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: 40px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.contact-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 4px 20px rgba(45,106,79,0.1);
}

.contact-icon {
  font-size: 1.6rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e9f5ee;
  border-radius: 10px;
  flex-shrink: 0;
}

.contact-info .contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 3px;
}

.contact-info .contact-value {
  font-size: 0.9rem;
  color: var(--color-text);
}

/* ===== Form ===== */
.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  max-width: 600px;
}

.contact-form h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(82,183,136,0.15);
}

.form-group textarea {
  height: 130px;
  resize: vertical;
}

.btn {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 11px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

/* ===== Page Header ===== */
.page-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 50px;
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 40px 0 40px;
    text-align: center;
  }
  .hero-image {
    order: -1;
    display: flex;
    justify-content: center;
  }
  .hero-text p { max-width: 100%; }
  .hero-text h1 { font-size: 2rem; }
  .nav-links { gap: 18px; }
  .contact-form { padding: 24px; }
}