/* ============================================================
   BLUE OWL BURGER — デモ店舗サイト v2
   設計根拠: 08_最先端デザイン調査_2026-08-24.md
   墨×炭火アンバー / 明朝の和アクセント / 縦書き / グレイン / マーキー
   ============================================================ */

:root {
  --bg: #131009;
  --bg-soft: #1b1710;
  --panel: #241e15;
  --ink: #f2eadb;
  --ink-soft: #b7ab93;
  --amber: #eda63a;
  --amber-deep: #c9821a;
  --red: #c94b3c;
  --line: rgba(242, 234, 219, 0.14);
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-min: "Zen Old Mincho", "Hiragino Mincho ProN", serif;
  --font-display: "Anton", "Noto Sans JP", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: var(--font-jp);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { max-width: 100%; display: block; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }
.container--narrow { max-width: 760px; }
.pc-only { display: inline; }

/* ---------- グレイン ---------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  opacity: 0.07;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 共通 ---------- */
.sec-eyebrow {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--amber);
  text-align: center;
  margin-bottom: 14px;
}
.sec-title {
  font-family: var(--font-min);
  font-weight: 700;
  font-feature-settings: "palt";
  font-size: clamp(28px, 4.4vw, 44px);
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 64px);
}
.btn {
  display: inline-block;
  font-weight: 700;
  border-radius: 999px;
  padding: 16px 40px;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease);
  text-align: center;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 15.5px;
}
.btn--primary { background: var(--amber); color: #171204; }
.btn--primary:hover { background: var(--ink); transform: translateY(-2px); }
.btn--outline { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn--outline:hover { border-color: var(--amber); color: var(--amber); transform: translateY(-2px); }
.btn--small { padding: 10px 22px; font-size: 13px; }
.btn--form { width: 100%; padding: 18px; font-size: 16px; }

.js-reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.js-reveal.is-visible { opacity: 1; transform: none; }
.about__grid .js-reveal:nth-child(2), .menu__grid .js-reveal:nth-child(2), .menu__grid .js-reveal:nth-child(5) { transition-delay: 0.08s; }
.about__grid .js-reveal:nth-child(3), .menu__grid .js-reveal:nth-child(3), .menu__grid .js-reveal:nth-child(6) { transition-delay: 0.16s; }
@media (prefers-reduced-motion: reduce) {
  .js-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* 画像スロット */
.img-slot { position: relative; overflow: hidden; }
.img-slot .slot-img { display: none; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.img-slot.has-img .slot-img { display: block; }
.img-slot.has-img .ph { display: none; }
.ph { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
.ph__icon { font-size: 52px; opacity: 0.9; transition: transform 1.2s var(--ease); }

/* ---------- ヘッダー ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(19, 16, 9, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.header.is-scrolled { border-bottom-color: var(--line); }
.header__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.header__logo {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.06em;
  margin-right: auto;
  line-height: 1.1;
}
.header__logo span { display: block; font-size: 10.5px; letter-spacing: 0.46em; color: var(--amber); }
.header__nav { display: flex; gap: 24px; font-size: 13.5px; font-weight: 500; }
.header__nav a { position: relative; padding: 4px 0; }
.header__nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease);
}
.header__nav a:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---------- ヒーロー ---------- */
.hero { position: relative; padding: clamp(140px, 18vh, 190px) 0 clamp(80px, 10vw, 120px); overflow: clip; }
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 60% at 76% 38%, rgba(237, 166, 58, 0.16), transparent),
    radial-gradient(ellipse 40% 50% at 12% 88%, rgba(201, 75, 60, 0.1), transparent);
}
.hero__inner {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero__eyebrow {
  font-family: var(--font-display);
  letter-spacing: 0.42em;
  color: var(--amber);
  font-size: 13px;
  margin-bottom: 20px;
}
.hero__title { margin-bottom: 24px; }
.hero__title-en {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(64px, 9.4vw, 124px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.hero__title-jp {
  display: block;
  margin-top: 26px;
  font-family: var(--font-min);
  font-weight: 700;
  font-feature-settings: "palt";
  font-size: clamp(19px, 2.5vw, 27px);
  letter-spacing: 0.1em;
  line-height: 1.9;
}
.hero__lead { color: var(--ink-soft); margin-bottom: 34px; font-size: 15.5px; }
.hero__actions { display: flex; gap: 14px; margin-bottom: 38px; flex-wrap: wrap; }
.hero__info { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--ink-soft); }
.hero__info li { display: flex; align-items: center; gap: 8px; }
.hero__info span {
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2px 8px;
}
.hero__visual { position: relative; }
.img-slot--hero {
  border-radius: 50%;
  aspect-ratio: 1;
  overflow: hidden;
  background: radial-gradient(circle at 50% 40%, #241e15, transparent);
  animation: heroFloat 6s ease-in-out infinite;
}
.img-slot--hero.has-img { box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--line); }
.img-slot--hero.has-img .slot-img { animation: kenburns 14s ease-in-out infinite alternate; }
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.09); } }
.hero__sticker {
  position: absolute;
  top: -6px; right: 8px;
  width: 88px; height: 88px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.25;
  transform: rotate(10deg);
  box-shadow: 0 10px 28px rgba(201, 75, 60, 0.35);
}
.hero__tate {
  position: absolute;
  top: 50%;
  right: clamp(6px, 1.6vw, 28px);
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-min);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5em;
  color: var(--ink-soft);
  border-right: 1px solid var(--line);
  padding-right: 14px;
  user-select: none;
}

/* ---------- マーキー ---------- */
.marquee {
  background: var(--amber);
  color: #171204;
  overflow: hidden;
  padding: 13px 0;
}
.marquee__track { display: flex; width: max-content; animation: marquee 30s linear infinite; }
.marquee__track span {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.22em;
  white-space: nowrap;
  padding-right: 14px;
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- お知らせ ---------- */
.news { background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.news__inner { display: flex; align-items: center; gap: 16px; padding-top: 14px; padding-bottom: 14px; font-size: 14px; color: var(--ink-soft); }
.news__label {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--amber);
  border: 1px solid var(--amber);
  border-radius: 3px;
  padding: 2px 10px;
  flex-shrink: 0;
}

/* ---------- こだわり ---------- */
.about { padding-block: clamp(88px, 12vw, 150px); }
.about__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.about-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.5s var(--ease), border-color 0.5s var(--ease);
}
.about-card:hover { transform: translateY(-8px); border-color: rgba(237, 166, 58, 0.55); }
.about-card:hover .slot-img, .about-card:hover .ph__icon { transform: scale(1.07); }
.about-card__img { height: 200px; background: radial-gradient(circle at 50% 60%, #2a2318, #1b1710); }
.about-card h3 {
  font-family: var(--font-min);
  font-weight: 700;
  font-feature-settings: "palt";
  font-size: 19px;
  letter-spacing: 0.06em;
  padding: 24px 24px 8px;
}
.about-card p { font-size: 14px; color: var(--ink-soft); padding: 0 24px 26px; }

/* ---------- メニュー ---------- */
.menu { padding-block: clamp(88px, 12vw, 150px); background: var(--bg-soft); border-block: 1px solid var(--line); }
.menu__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.menu-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: transform 0.5s var(--ease), border-color 0.5s var(--ease);
}
.menu-card:hover { transform: translateY(-8px); border-color: rgba(237, 166, 58, 0.55); }
.menu-card:hover .slot-img, .menu-card:hover .ph__icon { transform: scale(1.08); }
.menu-card--reco { border-color: var(--amber); }
.menu-card__badge {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  background: var(--amber);
  color: #171204;
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  padding: 4px 14px;
}
.menu-card__img { height: 185px; background: radial-gradient(circle at 50% 60%, #2c2416, #1b1710); }
.menu-card__body { padding: 22px 24px 26px; }
.menu-card__body h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; letter-spacing: 0.02em; }
.menu-card__body p { font-size: 13px; color: var(--ink-soft); }
.menu-card__price {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--amber);
  letter-spacing: 0.05em;
  display: flex;
  justify-content: flex-end;
}
.menu__note { text-align: center; font-size: 13px; color: var(--ink-soft); margin-top: 34px; }

/* ---------- キャンペーン ---------- */
.campaign { padding-block: clamp(88px, 12vw, 150px); }
.campaign__card {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid rgba(237, 166, 58, 0.5);
  border-radius: 26px;
  text-align: center;
  padding: clamp(52px, 7vw, 76px) 32px clamp(44px, 6vw, 60px);
  overflow: clip;
}
.campaign__card::before {
  content: "";
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(237, 166, 58, 0.14);
  filter: blur(110px);
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
}
.campaign__label {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  letter-spacing: 0.3em;
  font-size: 12px;
  background: var(--amber);
  color: #171204;
  border-radius: 999px;
  padding: 4px 24px;
}
.campaign__card h2 {
  position: relative;
  font-family: var(--font-min);
  font-weight: 700;
  font-feature-settings: "palt";
  font-size: clamp(24px, 3.6vw, 36px);
  letter-spacing: 0.06em;
  line-height: 1.7;
  margin-bottom: 18px;
}
.campaign__card p { position: relative; color: var(--ink-soft); max-width: 560px; margin: 0 auto; font-size: 14.5px; }
.campaign__period { margin-top: 14px; font-size: 13px; color: var(--amber); }

/* ---------- アクセス ---------- */
.access { padding-block: clamp(88px, 12vw, 150px); background: var(--bg-soft); border-top: 1px solid var(--line); }
.access__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.access__map-slot { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 3 / 2; }
.access__table th, .access__table td {
  text-align: left;
  padding: 14px 6px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  vertical-align: top;
}
.access__table th {
  width: 100px;
  font-family: var(--font-min);
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.access__table td { color: var(--ink-soft); }
.access__sub { font-size: 12px; opacity: 0.7; }
.access__sns { margin-top: 26px; font-size: 14px; color: var(--ink-soft); }
.access__sns-links { display: flex; gap: 12px; margin-top: 10px; }
.access__sns-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 22px;
  font-size: 13px;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}
.access__sns-links a:hover { border-color: var(--amber); color: var(--amber); }

/* ---------- お問い合わせ ---------- */
.contact { padding-block: clamp(88px, 12vw, 150px); }
.contact__lead { text-align: center; color: var(--ink-soft); margin: -28px 0 44px; font-size: 14.5px; }
.contact__form {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(30px, 4vw, 44px);
  display: grid;
  gap: 24px;
}
.form-row { display: grid; gap: 8px; }
.form-row label { font-size: 13.5px; font-weight: 700; letter-spacing: 0.04em; }
.req {
  background: var(--red);
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
  border-radius: 3px;
  padding: 1px 8px;
  margin-left: 8px;
  vertical-align: 1px;
}
.form-row input, .form-row select, .form-row textarea {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--ink);
  font-family: inherit;
  font-size: 15px;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(237, 166, 58, 0.16);
}
.form-row input::placeholder, .form-row textarea::placeholder { color: #6a5f4b; }

/* ---------- フッター ---------- */
.footer { background: #0e0b06; border-top: 1px solid var(--line); padding: 52px 0; }
.footer__inner { text-align: center; display: grid; gap: 14px; }
.footer__logo { font-family: var(--font-display); font-size: 20px; line-height: 1.1; }
.footer__logo span { display: block; font-size: 10.5px; letter-spacing: 0.46em; color: var(--amber); }
.footer__demo { font-size: 12px; color: var(--ink-soft); opacity: 0.75; }
.footer__copy { font-size: 12px; color: var(--ink-soft); opacity: 0.5; }

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 960px) {
  .about__grid, .menu__grid { grid-template-columns: repeat(2, 1fr); }
  .access__grid { grid-template-columns: 1fr; }
  .hero__tate { display: none; }
}

@media (max-width: 640px) {
  .pc-only { display: none; }
  .header__nav { display: none; }
  .hero { padding-top: 118px; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 320px; margin: 0 auto; width: 100%; }
  .about__grid, .menu__grid { grid-template-columns: 1fr; max-width: 440px; margin-inline: auto; }
  .news__inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}