@charset "UTF-8";

/* ==========================================================================
   共通スタイル（全ページで読み込む）
   - 色・フォント・余白などのデザイン値は :root のカスタムプロパティで一元管理する
   ========================================================================== */

:root {
  /* ブランドカラー（ロゴと同一） */
  --color-blue: #008ec2;
  --color-blue-deep: #00719b;
  --color-pink: #f48fc4;
  --color-pink-deep: #d8649f;

  /* 装飾用の淡色 */
  --color-blue-soft: #dcecfb;
  --color-pink-soft: #fde4f0;
  --color-lavender-soft: #ebe4fb;
  --color-beige: #e8e3d6;

  /* 装飾用グラデーション（端が白に溶けないよう淡い側も色を残す） */
  --gradient-blob-blue: linear-gradient(140deg, #bcdcf7 0%, #d6eafb 55%, #e6f2fd 100%);
  --gradient-blob-pink: linear-gradient(140deg, #f8c2dc 0%, #fbd8e9 55%, #fde8f2 100%);
  --gradient-blob-lavender: linear-gradient(140deg, #d6c9f5 0%, #e5dcf9 55%, #f0ebfc 100%);
  --gradient-blob-accent: linear-gradient(140deg, #8fc8ef 0%, #b9dcf6 100%);
  --gradient-photo-placeholder: linear-gradient(135deg, #f2f8fd 0%, #fbf3f8 100%);
  /* 灰色背景（.section--alt）上では淡色が埋もれるため一段濃い同系色を使う */
  --gradient-photo-placeholder-alt-blue: linear-gradient(140deg, #b3d6f4 0%, #d2e7fa 100%);
  --gradient-photo-placeholder-alt-pink: linear-gradient(140deg, #f5b8d6 0%, #fad3e6 100%);
  --color-ring-blue: rgba(0, 142, 194, 0.45);
  --color-ring-pink: rgba(216, 100, 159, 0.5);
  --color-dot: rgba(0, 142, 194, 0.32);
  --photo-frame-width: 6px;
  --shadow-photo: 0 0 0 var(--photo-frame-width) var(--color-bg), 0 28px 56px -18px rgba(0, 84, 130, 0.28);
  --shadow-photo-organic: 0 28px 56px -24px rgba(0, 84, 130, 0.25);

  /* テキスト・背景 */
  --color-text: #3a3a3a;
  --color-text-muted: #6b6b6b;
  --color-line: #e4e1da;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f5f2;
  --color-footer-bg: #eef5fb;
  --color-footer-text: #3a3a3a;
  --color-footer-line: rgba(0, 84, 130, 0.12);

  /* フォント */
  --font-jp: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Meiryo", sans-serif;
  --font-en: "Cormorant Garamond", "Times New Roman", serif;

  /* 文字サイズ */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --fs-xl: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem);
  --fs-display: clamp(3rem, 2.2rem + 3.6vw, 5.5rem);

  /* レイアウト */
  --header-height: 72px;
  --content-width: 1120px;
  --content-width-narrow: 880px;
  --gutter: 20px;
  --section-space: clamp(80px, 6rem + 4vw, 160px);

  /* 形状・効果 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 32px;
  --radius-organic: 44% 56% 58% 42% / 46% 40% 60% 54%;
  --shadow-card: 0 16px 48px rgba(40, 60, 90, 0.08);
  --shadow-header: 0 4px 24px rgba(40, 60, 90, 0.06);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-base: 0.3s;
  --duration-reveal: 0.9s;
}

/* --------------------------------------------------------------------------
   リセット・ベース
   -------------------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: var(--font-jp);
  font-size: var(--fs-base);
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

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

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

img {
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
}

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   ユーティリティ
   -------------------------------------------------------------------------- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--gutter);
  z-index: 200;
  padding: 8px 16px;
  color: var(--color-bg);
  background-color: var(--color-blue-deep);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 12px;
}

@media (max-width: 767px) {
  .u-sp-hidden {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   レイアウト
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: calc(var(--content-width-narrow) + var(--gutter) * 2);
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

/* --------------------------------------------------------------------------
   見出し・テキスト
   -------------------------------------------------------------------------- */

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: clamp(40px, 5vw, 64px);
  font-weight: 400;
}

.section-heading--center {
  align-items: center;
  text-align: center;
}

.section-heading__en {
  position: relative;
  font-family: var(--font-en);
  font-size: var(--fs-display);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.section-heading__ja {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.section-heading__ja::before {
  content: "";
  width: 24px;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-pink));
}

.section-lead {
  max-width: 40em;
  margin: -24px auto clamp(40px, 5vw, 64px);
  text-align: center;
  color: var(--color-text-muted);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-sm);
  color: var(--color-blue-deep);
  border-bottom: 1px solid currentColor;
  transition: opacity var(--duration-base);
}

.text-link::after {
  content: "↗";
  font-size: 0.9em;
}

.text-link:hover {
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   写真枠・装飾オブジェクト
   -------------------------------------------------------------------------- */

/* 画像が未配置・読み込み失敗でもレイアウトが崩れないよう淡色の下地を敷く */
.photo {
  position: relative;
  overflow: hidden;
  background: var(--gradient-photo-placeholder);
}

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

.section--alt .photo {
  background: var(--gradient-photo-placeholder-alt-blue);
}

.photo.is-missing img {
  visibility: hidden;
}

/* 白い縁取り＋影で背景の図形から浮き上がらせる */
.photo--circle {
  aspect-ratio: 1;
  border-radius: 50%;
  box-shadow: var(--shadow-photo);
}

.photo--organic {
  border-radius: var(--radius-organic);
  box-shadow: var(--shadow-photo-organic);
}

/* 不定形のぼかし図形（背景装飾） */
.blob {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  border-radius: var(--radius-organic);
  animation: blob-morph 14s ease-in-out infinite alternate;
}

.blob--blue {
  background: var(--gradient-blob-blue);
}

.blob--pink {
  background: var(--gradient-blob-pink);
}

.blob--lavender {
  background: var(--gradient-blob-lavender);
}

.blob--accent {
  background: var(--gradient-blob-accent);
  animation-duration: 9s;
}

@keyframes blob-morph {
  0% {
    border-radius: 44% 56% 58% 42% / 46% 40% 60% 54%;
    transform: translate(0, 0) rotate(0deg);
  }

  50% {
    border-radius: 58% 42% 38% 62% / 52% 62% 38% 48%;
    transform: translate(8px, -10px) rotate(6deg);
  }

  100% {
    border-radius: 38% 62% 54% 46% / 60% 44% 56% 40%;
    transform: translate(-6px, 8px) rotate(-4deg);
  }
}

/* セクション間の波形ディバイダー */
.divider {
  width: 100%;
  height: clamp(40px, 6vw, 96px);
  margin-block: -1px;
}

.divider--to-alt {
  fill: var(--color-bg-alt);
  background-color: var(--color-bg);
}

.divider--from-alt {
  fill: var(--color-bg-alt);
  background-color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   スクロール表示アニメーション（JSが .is-visible を付与）
   -------------------------------------------------------------------------- */

.js-enabled .js-reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity var(--duration-reveal) var(--ease-out),
    transform var(--duration-reveal) var(--ease-out);
}

.js-enabled .js-reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   ヘッダー
   -------------------------------------------------------------------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  transition:
    background-color var(--duration-base),
    box-shadow var(--duration-base);
}

.site-header.is-scrolled,
.site-header.is-nav-open {
  background-color: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-header);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header__logo {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.site-header__logo img {
  width: clamp(112px, 10vw, 140px);
}

.global-nav__list {
  display: flex;
  gap: clamp(16px, 2.4vw, 36px);
}

.global-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.3;
  transition: color var(--duration-base);
}

.global-nav__en {
  font-family: var(--font-en);
  font-size: var(--fs-md);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.global-nav__ja {
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.global-nav__link::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  width: 0;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-pink));
  transition:
    width var(--duration-base) var(--ease-out),
    left var(--duration-base) var(--ease-out);
}

.global-nav__link:hover::after {
  left: 0;
  width: 100%;
}

.nav-toggle {
  display: none;
}

@media (max-width: 959px) {
  .nav-toggle {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    width: 44px;
    height: 44px;
    padding-inline: 10px;
  }

  .nav-toggle__bar {
    display: block;
    height: 2px;
    border-radius: 1px;
    background-color: var(--color-text);
    transition: transform var(--duration-base) var(--ease-out);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    transform: translateY(-5px) rotate(-45deg);
  }

  .global-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.98);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity var(--duration-base),
      visibility var(--duration-base);
  }

  .global-nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .global-nav__list {
    flex-direction: column;
    gap: 28px;
  }

  .global-nav__en {
    font-size: var(--fs-xl);
  }

  .global-nav__ja {
    font-size: var(--fs-xs);
  }
}

/* --------------------------------------------------------------------------
   フッター
   -------------------------------------------------------------------------- */

.site-footer {
  color: var(--color-footer-text);
  background-color: var(--color-footer-bg);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px 40px;
  max-width: calc(var(--content-width) + var(--gutter) * 2);
  margin-inline: auto;
  padding: 48px var(--gutter) 32px;
}

.site-footer__logo img {
  width: 140px;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font-size: var(--fs-sm);
}

.site-footer__nav a {
  transition: opacity var(--duration-base);
}

.site-footer__nav a:hover {
  opacity: 0.7;
}

@media (max-width: 767px) {
  .site-footer__inner {
    flex-direction: column;
    gap: 32px;
  }

  .site-footer__nav {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
  }
}

.site-footer__copyright {
  padding: 16px var(--gutter) 24px;
  text-align: center;
  border-top: 1px solid var(--color-footer-line);
}

.site-footer__copyright small {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

/* --------------------------------------------------------------------------
   ページトップボタン
   -------------------------------------------------------------------------- */

.page-top {
  position: fixed;
  right: var(--gutter);
  bottom: var(--gutter);
  z-index: 90;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: var(--color-bg);
  background-color: var(--color-blue);
  box-shadow: var(--shadow-card);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition:
    opacity var(--duration-base),
    visibility var(--duration-base),
    transform var(--duration-base) var(--ease-out),
    background-color var(--duration-base);
}

.page-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.page-top:hover {
  background-color: var(--color-blue-deep);
}

.page-top svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   動きを減らす設定への対応
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js-enabled .js-reveal {
    opacity: 1;
    transform: none;
  }
}