/* ==========================================================================
   common.css
   ========================================================================== */

/* --------------------------------------------------
   変数
-------------------------------------------------- */

:root {

  --color-ink: #1a1410;
  --color-white: #ffffff;
  --color-bg: #f4f4f4;
  --color-accent: #c0392b;
  --color-gold: #9a7d4a;
  --color-text: #6b6b6b;
  --color-border: rgba(154, 125, 74, 0.2);

  --font-serif-ja: 'Shippori Mincho B1', 'Noto Serif JP', serif;
  --font-serif-en: 'Bebas Neue', sans-serif;
  --font-base: 'Noto Serif JP', serif;

  --max-width: 1200px;
  --gutter: 64px;

}


/* --------------------------------------------------
   ベース
-------------------------------------------------- */

body {

  font-family: var(--font-base);
  font-size: 1.6rem;
  color: var(--color-ink);
  background: var(--color-white);

}


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

.l-container {

  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);

}

.l-inner {

  max-width: 800px;
  margin-inline: auto;

}


/* --------------------------------------------------
   セクション共通
-------------------------------------------------- */

.sec {

  padding-block: 100px;

}

.sec--bg {

  background: var(--color-bg);

}

.sec--dark {

  background: var(--color-ink);
  color: var(--color-white);

}

.sec--accent {

  background: var(--color-accent);
  color: var(--color-white);

}


/* --------------------------------------------------
   見出し共通
-------------------------------------------------- */

.sec__label {

  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif-en);
  font-size: 1rem;
  letter-spacing: 0.4em;
  color: var(--color-gold);
  margin-bottom: 16px;

}

.sec__label::after {

  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: var(--color-border);

}

.sec__ttl {

  font-family: var(--font-serif-ja);
  font-weight: 800;
  font-size: clamp(2.8rem, 3.5vw, 4.4rem);
  line-height: 1.3;
  color: var(--color-ink);
  margin-bottom: 16px;

}

.sec--dark .sec__ttl {

  color: var(--color-white);

}

.sec--accent .sec__ttl {

  color: var(--color-white);

}

.sec__txt {

  font-size: 1.4rem;
  line-height: 2;
  color: var(--color-text);
  max-width: 520px;
  margin-bottom: 60px;

}

.sec--dark .sec__txt {

  color: rgba(255, 255, 255, 0.6);

}

.sec--accent .sec__txt {

  color: rgba(255, 255, 255, 0.75);

}


/* --------------------------------------------------
   ボタン共通
-------------------------------------------------- */

.btn {

  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 36px;
  font-family: var(--font-serif-ja);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: transform 0.2s, box-shadow 0.2s;

}

.btn:hover {

  transform: translateY(-2px);

}

.btn--accent {

  background: var(--color-accent);
  color: var(--color-white);

}

.btn--accent:hover {

  box-shadow: 0 8px 24px rgba(192, 57, 43, 0.3);

}

.btn--white {

  background: var(--color-white);
  color: var(--color-accent);

}

.btn--white:hover {

  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);

}


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

.header {

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);

}

.header__logo {

  font-family: var(--font-serif-ja);
  font-weight: 800;
  font-size: 1.6rem;
  letter-spacing: 0.08em;
  color: var(--color-ink);
  line-height: 1.4;

}

.header__logo span {

  display: block;
  font-size: 0.9rem;
  color: var(--color-gold);
  letter-spacing: 0.25em;
  font-weight: 400;
  margin-top: 2px;

}

.header__nav {

  display: flex;
  align-items: center;
  gap: 36px;

}

.header__nav a {

  font-size: 1.2rem;
  letter-spacing: 0.15em;
  color: var(--color-text);
  transition: color 0.2s;

}

.header__nav a:hover {

  color: var(--color-accent);

}

.header__nav .btn {

  padding: 10px 22px;
  font-size: 1.1rem;

}


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

.footer {

  background: var(--color-ink);
  padding: 60px var(--gutter) 40px;

}

.footer__top {

  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);

}

.footer__logo {

  font-family: var(--font-serif-ja);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.6;

}

.footer__logo span {

  display: block;
  font-size: 1rem;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  font-weight: 400;
  margin-top: 4px;

}

.footer__nav {

  display: flex;
  gap: 32px;

}

.footer__nav a {

  font-size: 1.1rem;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.2s;

}

.footer__nav a:hover {

  color: var(--color-white);

}

.footer__copy {

  font-size: 1rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.3);

}


/* --------------------------------------------------
   レスポンシブ
-------------------------------------------------- */

@media (max-width: 768px) {

  :root {

    --gutter: 24px;

  }

  .header {

    padding: 16px var(--gutter);

  }

  .header__nav {

    display: none;

  }

  .sec {

    padding-block: 60px;

  }

  .footer__top {

    flex-direction: column;
    gap: 32px;

  }

  .footer__nav {

    flex-wrap: wrap;
    gap: 16px;

  }

}