:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --text: #2b3a55;
  --muted: #4a5568;
  --navy: #14124a;
  --accent: #e8774a;
  --cta: #ff7a1f;
  --yellow: #fde47a;
  --line: rgba(43, 58, 85, 0.18);
  --slot: #e6e2da;
  --container: min(1040px, calc(100% - 40px));
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

h1,
h2,
h3,
h4,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

/* 画像差し替え用の空枠 */
.image-slot {
  background: var(--slot);
  border-radius: 16px;
}

.image-slot--circle {
  border-radius: 50%;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(250, 248, 244, 0.95);
  box-shadow: 0 2px 12px rgba(43, 58, 85, 0.08);
}

.site-header.is-hidden {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-brand {
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  transition: color 0.3s ease;
}

.site-nav__list {
  display: flex;
  gap: 24px;
}

.site-nav a {
  font-family: "Jost", sans-serif;
  font-weight: 500;
  text-decoration: none;
  color: #fff;
  transition: color 0.3s ease;
}

.site-header.is-scrolled .site-brand,
.site-header.is-scrolled .site-nav a {
  color: var(--text);
}

.site-nav a:hover {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: 0;
  background: none;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-header.is-scrolled .nav-toggle__bar {
  background: var(--text);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 560px;
  padding: 96px 0 56px;
  color: #fff;
  background: #3d3a40 url("../images/hero.jpg") center / cover no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
}

.hero__inner {
  position: relative;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero__body {
  margin: 32px 0 0 auto;
  max-width: 560px;
  font-weight: 700;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.button-cta {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 48px;
  border-radius: 999px;
  background: var(--cta);
  color: #fff;
  font-weight: 500;
  font-size: 1.1rem;
  text-decoration: none;
  text-shadow: none;
  transition: opacity 0.2s ease;
}

.button-cta:hover {
  opacity: 0.85;
}

.hero__body .button-cta {
  display: block;
  width: fit-content;
  margin-left: auto;
}

/* Section common */
.section {
  padding: 72px 0;
}

.section-title {
  font-family: "Jost", sans-serif;
  font-size: clamp(2.4rem, 5vw, 3rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--accent);
}

.section-body {
  margin-left: 16px;
  padding: 12px 0 8px 24px;
  border-left: 2px solid var(--accent);
}

.section-subtitle {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

.section-head {
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.section-head__note {
  flex: 1;
  color: var(--muted);
}

.section-text {
  margin-top: 24px;
  font-size: 1.05rem;
  color: var(--muted);
}

/* Profile */
.profile {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}

.profile__image {
  flex: 0 0 200px;
  height: 280px;
}

.profile__lead {
  font-size: 1.2rem;
  color: var(--muted);
}

.profile__focus-title {
  margin-top: 24px;
  font-size: 1.2rem;
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.profile__focus {
  margin-top: 12px;
  color: var(--navy);
}

/* About */
.about-circles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  justify-items: center;
  max-width: 600px;
  margin: 40px auto 0;
}

.about-circle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 250px;
  aspect-ratio: 1;
  padding: 24px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--navy);
  text-align: center;
}

.about-circle h3 {
  margin-bottom: 16px;
  font-size: 1.25rem;
  line-height: 1.4;
}

.about-circle p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.about-circle--top {
  grid-column: 2 / 4;
}

.about-circle--left {
  grid-column: 1 / 3;
  margin-top: -24px;
}

.about-circle--right {
  grid-column: 3 / 5;
  margin-top: -24px;
}

/* Works */
.work {
  margin-top: 48px;
}

.work__label {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
}

.work__label span {
  margin-left: 16px;
  font-size: 0.85rem;
  font-weight: 400;
}

.work__title {
  margin: 8px 0 0 24px;
  font-size: 1.15rem;
}

.work__text {
  margin: 16px 0 0 24px;
  color: var(--muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-top: 24px;
}

.tags li {
  min-width: 132px;
  padding: 14px 24px;
  border-radius: 999px;
  background: var(--cta);
  color: var(--navy);
  text-align: center;
}

/* Portfolio（案B：水彩風バンド。背景は後で画像に差し替え可） */
.pf-band {
  margin-top: 32px;
  padding: 40px;
  border-radius: 24px;
}

.pf-band--web {
  background: linear-gradient(135deg, #c9d8cf 0%, #d6dcf5 60%, #e3dbfa 100%);
}

.pf-band--game {
  background: linear-gradient(135deg, #f8b977 0%, #fbcf9a 60%, #fde3c4 100%);
}

.pf-band--stamp {
  background: linear-gradient(135deg, #8fd35a 0%, #b9e57d 60%, #e3f4b8 100%);
}

.pf-band__inner {
  position: relative;
}

.pf-band__title {
  font-size: 1.5rem;
  font-weight: 700;
}

.pf-band__title--pill {
  width: fit-content;
  margin: 0 auto;
  padding: 2px 12px;
  border-radius: 8px;
  background: #fff;
  font-weight: 500;
}

.pf-item {
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 640px;
  margin-top: 24px;
  text-decoration: none;
}

.pf-item--reverse {
  flex-direction: row-reverse;
  margin-left: auto;
  text-align: right;
}

.pf-item__icon {
  flex: 0 0 128px;
  height: 128px;
  border: 1px solid var(--text);
  background: #fff;
}

.pf-item__text {
  font-size: 1.4rem;
  line-height: 1.6;
}

a.pf-item:hover .pf-item__text,
.pf-band__more:hover {
  text-decoration: underline;
}

.pf-band__more {
  display: block;
  width: fit-content;
  margin: 16px 0 0 auto;
  font-size: 1.3rem;
  text-decoration: none;
}

.stamps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
  text-align: center;
}

.stamp h4 {
  font-size: 1.5rem;
  font-weight: 400;
}

.stamp__image {
  display: block;
  width: min(160px, 100%);
  height: auto;
  aspect-ratio: 1;
  margin: 8px auto 16px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  background: #fff;
  object-fit: cover;
}

.stamp p {
  font-size: 0.95rem;
}

.stamp a {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  text-decoration: none;
}

.stamp a:hover {
  text-decoration: underline;
}

/* Possible / Skills */
.skills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  max-width: 640px;
  margin: 40px auto 0;
}

/* 左右それぞれが「上がアーチ・下がアーチ」の縦長カプセルになるように角丸を付ける */
.skills__photo {
  height: 200px;
  object-fit: cover;
}

.skills__photo--tl,
.skills__photo--tr {
  border-radius: 999px 999px 0 0;
}

.skills__photo--bl,
.skills__photo--br {
  border-radius: 0 0 999px 999px;
}

.skill-card {
  padding: 24px 16px;
  outline: 1px solid var(--text);
  outline-offset: -0.5px;
  background: var(--surface);
  text-align: center;
}

.skill-card h3 {
  font-size: 1.1rem;
  color: var(--navy);
}

.skill-card p {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--muted);
}

.skills__note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 48px;
  font-size: 1.2rem;
  font-weight: 700;
  text-align: center;
}

.skills__note-icon {
  font-size: 2.4rem;
}

/* Contact */
.contact-list {
  display: grid;
  gap: 24px;
  max-width: 560px;
  margin: 40px auto 0;
  padding: 40px 32px;
  border: 3px solid var(--text);
  border-radius: 48px;
  background: var(--surface);
}

.contact-list li {
  display: grid;
  grid-template-columns: 48px 96px 1fr;
  align-items: center;
  gap: 12px;
}

.contact-list__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  font-size: 1.6rem;
}

.contact-list__label {
  font-weight: 500;
}

.contact-note {
  margin-top: 32px;
  text-align: center;
}

/* Footer */
.site-footer {
  padding: 32px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    inset: 64px 0 auto;
    display: none;
    background: rgba(250, 248, 244, 0.98);
    box-shadow: 0 8px 16px rgba(43, 58, 85, 0.1);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 16px;
  }

  .site-nav a {
    display: block;
    padding: 10px 0;
    color: var(--text);
  }

  .hero {
    min-height: 480px;
  }

  .hero__body br {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  .section-body {
    margin-left: 8px;
    padding-left: 16px;
  }

  .section-head {
    flex-direction: column;
    gap: 8px;
  }

  .profile {
    flex-direction: column;
    align-items: center;
  }

  .profile__image {
    flex-basis: auto;
    width: 200px;
    height: 260px;
  }

  .about-circles {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about-circle--top,
  .about-circle--left,
  .about-circle--right {
    grid-column: auto;
    margin-top: 0;
  }

  .work__label span {
    display: block;
    margin-left: 0;
  }

  .work__title,
  .work__text {
    margin-left: 0;
  }

  .tags {
    gap: 12px;
  }

  .tags li {
    min-width: 0;
    padding: 10px 20px;
  }

  .pf-band {
    padding: 24px 16px;
    border-radius: 16px;
  }

  .pf-item {
    gap: 16px;
  }

  .pf-item__icon {
    flex-basis: 88px;
    height: 88px;
  }

  .pf-item__text {
    font-size: 1.1rem;
  }

  .stamps {
    gap: 12px;
  }

  .stamp h4 {
    font-size: 1.1rem;
  }

  .stamp p {
    font-size: 0.8rem;
  }

  .skills__photo {
    height: 140px;
  }

  .skill-card {
    padding: 16px 10px;
  }

  .skill-card h3 {
    font-size: 0.95rem;
  }

  .skill-card p {
    font-size: 0.82rem;
  }

  .skills__note {
    font-size: 1rem;
    text-align: left;
  }

  .skills__note br {
    display: none;
  }

  .contact-list {
    padding: 32px 20px;
    border-radius: 32px;
  }

  .contact-list li {
    grid-template-columns: 36px 1fr;
    gap: 4px 12px;
  }

  .contact-list__icon {
    grid-row: span 2;
    width: 36px;
    height: 36px;
    font-size: 1.3rem;
  }

  .contact-list__label {
    font-size: 0.8rem;
    color: var(--muted);
  }
}