/* =========================================================
   JRC Corporate Site — main.css
   静岡リラクゼーション事業協同組合
   --------------------------------------------------------
   このファイルにはCSS変数、リセット、共通タイポ、
   ユーティリティクラスを定義する。
   セクションごとの装飾は components.css に分離。
   ========================================================= */

/* ---------- CSS変数 ---------- */
:root {
  /* ベース */
  --color-bg-primary: #FAF7F2;
  --color-bg-secondary: #F1EBE0;
  --color-bg-tertiary: #ECE4D5;
  --color-bg-dark: #1A2332;

  /* テキスト */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #5C5C5C;
  --color-text-tertiary: #8A8A8A;
  --color-text-inverse: #FAF7F2;

  /* アクセント */
  --color-accent-primary: #1F3A5F;
  --color-accent-secondary: #6B7F4A;
  --color-accent-gold: #B89968;
  --color-accent-warm: #C9876B;

  /* 罫線 */
  --color-line: #D4CCBE;
  --color-line-dark: #3A4757;
  --color-line-soft: #E8E0D0;

  /* タイポ */
  --font-mincho: "Noto Serif JP", "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-gothic: "Zen Kaku Gothic Antique", "Noto Sans JP", "Hiragino Sans", sans-serif;
  --font-display: "Cormorant Garamond", "Italiana", serif;
  --font-numeric: "Marcellus", "Cormorant Garamond", serif;

  /* スペース */
  --section-pad-y: clamp(80px, 10vw, 160px);
  --container-max: 1280px;
  --container-pad-x: clamp(20px, 5vw, 64px);

  /* イージング */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-cubic: cubic-bezier(0.65, 0, 0.35, 1);

  /* 影 */
  --shadow-card: 0 1px 2px rgba(26, 35, 50, 0.04), 0 8px 24px rgba(26, 35, 50, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(26, 35, 50, 0.08), 0 20px 48px rgba(26, 35, 50, 0.12);
}

/* ---------- リセット ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-mincho);
  font-weight: 400;
  font-size: 16px;
  line-height: 2.0;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  font-feature-settings: "palt";
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.4s var(--ease-out-expo);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

/* ---------- カスタムスクロールバー ---------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-accent-gold);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-primary);
}

::selection {
  background: var(--color-accent-gold);
  color: var(--color-text-inverse);
}

/* ---------- フォーカスリング（アクセシビリティ） ---------- */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid #D4B57E;
  outline-offset: 4px;
  border-radius: 2px;
}

/* ---------- 共通タイポグラフィ ---------- */
.font-display {
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

.font-numeric {
  font-family: var(--font-numeric);
  letter-spacing: 0;
}

.font-gothic {
  font-family: var(--font-gothic);
}

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  display: inline-flex;
  align-items: center;
  gap: 1.5em;
  font-weight: 500;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-accent-gold);
}

.section-title {
  font-family: var(--font-mincho);
  font-weight: 600;
  font-size: clamp(1.875rem, 3.6vw, 3rem);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  margin-top: 1rem;
}

.section-title--inverse {
  color: var(--color-text-inverse);
}

.section-subtitle {
  font-family: var(--font-mincho);
  font-size: clamp(0.9375rem, 1.2vw, 1.0625rem);
  line-height: 2.0;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin-top: 1.5rem;
}

.lede {
  font-family: var(--font-mincho);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 2.1;
  color: var(--color-text-secondary);
}

/* ---------- レイアウトユーティリティ ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad-x);
  padding-right: var(--container-pad-x);
}

.section {
  padding-top: var(--section-pad-y);
  padding-bottom: var(--section-pad-y);
  position: relative;
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

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

.section-header {
  margin-bottom: clamp(56px, 7vw, 96px);
  max-width: 800px;
}

.section-header--centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.divider-line {
  height: 1px;
  background: var(--color-line);
  width: 100%;
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 1.2s var(--ease-out-expo);
}

.is-visible .divider-line {
  transform: scaleX(1);
}

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75em;
  padding: 1.05em 2.4em;
  font-family: var(--font-mincho);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  border: 1px solid currentColor;
  position: relative;
  overflow: hidden;
  transition: color 0.5s var(--ease-out-expo), background 0.5s var(--ease-out-expo);
  cursor: pointer;
  white-space: nowrap;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-text-primary);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.6s var(--ease-out-expo);
  z-index: -1;
}

.btn:hover::before {
  transform: scaleX(1);
  transform-origin: left center;
}

.btn:hover {
  color: var(--color-text-inverse);
}

.btn--primary {
  background: var(--color-accent-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-accent-primary);
}

.btn--primary::before {
  background: var(--color-bg-dark);
}

.btn--gold {
  background: var(--color-accent-gold);
  color: #1A2332;
  border-color: var(--color-accent-gold);
  font-weight: 600;
}

.btn--gold::before {
  background: #1A2332;
}

.btn--gold:hover {
  color: var(--color-text-inverse);
}

.btn--ghost {
  color: var(--color-text-primary);
  border-color: var(--color-text-primary);
}

.btn--ghost-light {
  color: var(--color-text-inverse);
  border-color: rgba(250, 247, 242, 0.7);
  border-width: 1.5px;
  background: transparent;
}

.btn--ghost-light::before {
  background: rgba(250, 247, 242, 1);
}

.btn--ghost-light:hover {
  color: var(--color-bg-dark);
  border-color: rgba(250, 247, 242, 1);
}

.btn .arrow {
  display: inline-block;
  transition: transform 0.5s var(--ease-out-expo);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* ---------- テキストリンク（下線アニメ） ---------- */
.text-link {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.5s var(--ease-out-expo), left 0.5s var(--ease-out-expo);
}

.text-link:hover::after {
  width: 100%;
  left: 0;
}

/* ---------- スクロール表示アニメーション基盤 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s var(--ease-out-expo), transform 1.2s var(--ease-out-expo);
}

.reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 1.2s var(--ease-out-expo), transform 1.2s var(--ease-out-expo);
}

.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 1.2s var(--ease-out-expo), transform 1.2s var(--ease-out-expo);
}

.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s var(--ease-out-expo), transform 1s var(--ease-out-expo);
}

.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.45s; opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.55s; opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal,
  .reveal-up,
  .reveal-left,
  .reveal-right,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}