/* ==========================================================================
   めぐりの家 デザイン案A「四季のめぐり」
   スクロールで春→夏→秋→冬と色がめぐる、物語型トップページ
   ========================================================================== */

:root {
  /* 季節パレット（初期値=春）。body[data-season] で上書きする */
  --color-bg: #fdf6f7;
  --color-accent: #c96f8d;
  --color-pale: #f6e3e9;
  --color-text: #3b3a36;

  --color-white: #ffffff;

  --font-serif: "Yu Mincho", "Hiragino Mincho ProN", serif;
  --font-sans: "Yu Gothic Medium", "Hiragino Kaku Gothic ProN", sans-serif;

  --max-width: 1080px;
  --radius-lg: 28px;
  --radius: 16px;
  --shadow-card: 0 10px 30px rgba(59, 58, 54, 0.08);

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --header-height: 64px;

  --transition-theme: 1.2s ease;
}

body[data-season="natsu"] {
  --color-bg: #f3f8f1;
  --color-accent: #4f8f60;
  --color-pale: #e2efe0;
}

body[data-season="aki"] {
  --color-bg: #faf4ea;
  --color-accent: #bd7a35;
  --color-pale: #f2e6d4;
}

body[data-season="fuyu"] {
  --color-bg: #f2f6f9;
  --color-accent: #5f87a8;
  --color-pale: #e4ecf2;
}

/* ---------- リセット ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  transition: background-color var(--transition-theme), color var(--transition-theme);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  line-height: 1.5;
  margin: 0;
}

p {
  margin: 0;
}

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

a {
  color: inherit;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  color: var(--color-text);
  padding: 0.75em 1.25em;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
}

/* ---------- 季節の粒子 canvas ---------- */
#season-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(59, 58, 54, 0.08);
}

.site-header__inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-header__logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.site-nav {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.site-nav ul {
  display: flex;
  gap: var(--space-md);
  white-space: nowrap;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.9375rem;
  padding: 0.25em 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-theme), color var(--transition-theme);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--color-accent);
}

/* ---------- 全体レイアウト ---------- */
main,
.site-header,
.site-footer {
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--space-xl) var(--space-sm);
  scroll-margin-top: var(--header-height);
}

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

.season-label {
  font-family: var(--font-serif);
  color: var(--color-accent);
  font-size: 0.9375rem;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-xs);
  transition: color var(--transition-theme);
}

.section__eyebrow {
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--color-text);
  opacity: 0.55;
  margin-bottom: var(--space-xs);
}

.section__title {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: clamp(1.5rem, 1.2rem + 1.3vw, 2.1rem);
  margin-bottom: var(--space-md);
}

.deco {
  flex-shrink: 0;
  color: var(--color-accent);
  transition: color var(--transition-theme);
}

.section__lead {
  font-size: 1.0625rem;
  max-width: 42em;
  margin-bottom: var(--space-lg);
}

.note {
  margin-top: var(--space-lg);
  background: var(--color-pale);
  border-radius: var(--radius);
  padding: var(--space-md);
  font-size: 1rem;
  transition: background-color var(--transition-theme);
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.9em 1.75em;
  border-radius: 999px;
  border: 2px solid var(--color-accent);
  transition: background-color var(--transition-theme), border-color var(--transition-theme),
    color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

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

.btn--outline {
  background: transparent;
  color: var(--color-text);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(59, 58, 54, 0.14);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  filter: brightness(1.05);
}

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-lg)) var(--space-sm) var(--space-xl);
  overflow: hidden;
}

.hero__ring {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
  opacity: 0.55;
}

.ring-svg {
  width: min(120vw, 640px);
  height: auto;
}

.ring-svg__rotate {
  transform-origin: 300px 300px;
  animation: ring-rotate 60s linear infinite;
}

@keyframes ring-rotate {
  to {
    transform: rotate(360deg);
  }
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 40em;
}

.hero__title {
  font-size: clamp(2.25rem, 1.6rem + 3vw, 3.75rem);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-md);
}

/* 「いのちは、」「めぐる。」の途中で改行しない */
.hero__title span {
  display: inline-block;
}

.hero__sub {
  font-size: 1.0625rem;
  line-height: 1.9;
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.hero__scroll {
  position: relative;
  z-index: 1;
  margin-top: var(--space-xl);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4em;
  text-decoration: none;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--color-text);
  opacity: 0.7;
}

/* ---------- カード ---------- */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 720px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-md);
  border-top: 4px solid var(--color-accent);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color var(--transition-theme);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(59, 58, 54, 0.14);
}

.card__title {
  font-size: 1.125rem;
  margin-bottom: 0.75em;
}

.card__body {
  font-size: 0.9375rem;
}

/* ---------- メニューカード ---------- */
.menu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 560px) {
  .menu-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.menu-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-md);
  border-top: 4px solid var(--color-accent);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color var(--transition-theme);
}

.menu-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(59, 58, 54, 0.14);
}

.menu-card__name {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  margin-bottom: 0.5em;
}

.menu-card__time {
  font-size: 0.9375rem;
  opacity: 0.75;
  margin-bottom: 0.25em;
}

.menu-card__price {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-bottom: 0.5em;
  transition: color var(--transition-theme);
}

.menu-card__price span {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text);
  margin-left: 0.5em;
}

.menu-card__desc {
  font-size: 0.9375rem;
}

/* ---------- プロフィール ---------- */
.profile {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}

@media (min-width: 720px) {
  .profile {
    grid-template-columns: 160px 1fr;
  }
}

.profile__photo {
  display: flex;
  justify-content: center;
}

.profile__photo svg {
  border-radius: 50%;
}

.profile__name {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  margin-bottom: 0.35em;
}

.profile__role {
  font-size: 0.9375rem;
  opacity: 0.75;
  margin-bottom: var(--space-md);
}

.profile__history {
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  margin-bottom: var(--space-md);
  padding-left: 1.25em;
}

.profile__history li {
  position: relative;
  font-size: 0.9375rem;
}

.profile__history li::before {
  content: "";
  position: absolute;
  left: -1.25em;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  transition: background-color var(--transition-theme);
}

.profile__message {
  background: var(--color-pale);
  border-radius: var(--radius);
  padding: var(--space-md);
  font-size: 1rem;
  transition: background-color var(--transition-theme);
}

/* ---------- FAQ ---------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: var(--space-sm) var(--space-md);
  border-top: 4px solid var(--color-accent);
  transition: border-color var(--transition-theme);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 0.4em 0;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary h3 {
  display: inline;
  font-size: 1.0625rem;
  font-weight: 700;
}

.faq-item summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  margin-right: 0.4em;
  color: var(--color-accent);
  font-family: var(--font-sans);
  font-weight: 700;
  transition: color var(--transition-theme);
}

.faq-item[open] summary::before {
  content: "–";
}

.faq-item p {
  margin-top: 0.75em;
  padding-top: 0.75em;
  border-top: 1px solid var(--color-pale);
  font-size: 0.9375rem;
}

/* ---------- お問い合わせフォーム ---------- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 36em;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  border-top: 4px solid var(--color-accent);
  transition: border-color var(--transition-theme);
}

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

.form-field label {
  font-size: 0.9375rem;
  font-weight: 700;
}

.form-field input,
.form-field select,
.form-field textarea {
  border: 1px solid rgba(59, 58, 54, 0.25);
  border-radius: 10px;
  padding: 0.75em 0.9em;
  background: var(--color-white);
  font-size: 1rem;
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.contact-form .btn {
  align-self: flex-start;
  border: none;
  cursor: pointer;
}

.form-status {
  font-size: 0.9375rem;
  min-height: 1.2em;
}

.form-status:not(:empty) {
  background: var(--color-pale);
  border-radius: var(--radius);
  padding: var(--space-sm);
  transition: background-color var(--transition-theme);
}

/* ---------- フッター ---------- */
.site-footer {
  background: var(--color-white);
  padding: var(--space-xl) var(--space-sm) var(--space-lg);
  text-align: center;
}

.site-footer__inner {
  max-width: 40em;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.9em;
}

.site-footer__cycle {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: 0.5em;
  transition: color var(--transition-theme);
}

.site-footer__name {
  font-weight: 700;
}

.site-footer__address,
.site-footer__copyright {
  font-size: 0.875rem;
  opacity: 0.75;
}

.site-footer__disclaimer {
  font-size: 0.8125rem;
  opacity: 0.7;
  line-height: 1.9;
  margin-top: 0.5em;
}

/* ---------- スクロール出現（JS有効時のみ非表示スタートにする） ---------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

html.js .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 動きを抑えたい場合 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .ring-svg__rotate {
    animation: none;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .btn:focus-visible,
  .card:hover,
  .menu-card:hover {
    transform: none;
  }
}