/* ============================================================
   津軽塗・研ぎ出し体験 イベントLP
   世界観：漆黒 × 金 × 朱 ― 伝統と気品、そのなかの先進性
   ブランド準拠：セカプラ ブランドビジュアル定義（2026-03-27版）
   ※ダーク背景はイベント特性上「漆黒（ウォームブラック系）」を採用
   ============================================================ */

:root {
  /* セカプラ・パレット */
  --paper: #FFFDF9;        /* ウォームホワイト */
  --greige: #F5F5F0;       /* グレージュ */
  --ink: #1E1C1A;          /* ウォームブラック（漆黒ベース） */
  --ink-deep: #14120F;     /* 漆黒・深（グラデーション用） */
  --mocha: #4A4540;        /* 補足テキスト */
  --gold: #C5A059;         /* アンティークゴールド */
  --gold-light: #D4B472;   /* ゴールドライト */
  /* イベント限定アクセント：唐塗の朱（使用は最小限） */
  --shu: #A93B2C;

  --serif: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  --sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;

  --section-pad: clamp(88px, 14vh, 160px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 2.0;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--gold); color: #fff; }

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

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 48px); }

/* ---------- 英字ラベル ---------- */
.en-label {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 22px;
}

/* ---------- 見出し ---------- */
.h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.6;
  letter-spacing: .08em;
  margin-bottom: clamp(32px, 5vh, 56px);
}
.h2 .rule {
  display: block;
  width: 56px;
  height: 1px;
  background: var(--gold);
  margin-top: 26px;
}
.center .h2 .rule { margin-left: auto; margin-right: auto; }
.center { text-align: center; }

/* ---------- CTAボタン ---------- */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-width: min(320px, 100%);
  min-height: 64px;
  padding: 14px 52px;
  background: var(--gold);
  color: #2d2d2d;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .14em;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: background .35s ease, transform .35s ease, box-shadow .35s ease;
}
.btn-cta:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(197, 160, 89, .35);
}
.btn-cta .arrow { font-family: var(--serif); transition: transform .35s ease; }
.btn-cta:hover .arrow { transform: translateX(6px); }

/* ============================================================
   ヘッダー
   ============================================================ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 4vw, 44px);
  transition: background .5s ease, box-shadow .5s ease, padding .5s ease;
}
.header.scrolled {
  background: rgba(20, 18, 15, .88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(197, 160, 89, .25);
  padding-top: 12px;
  padding-bottom: 12px;
}
.header .brand {
  font-family: var(--serif);
  color: var(--paper);
  font-size: 17px;
  letter-spacing: .22em;
}
.header .brand small {
  display: block;
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .34em;
  color: var(--gold);
  margin-top: 2px;
}
.header .btn-cta {
  min-width: 0;
  min-height: 0;
  padding: 10px 28px;
  font-size: 14px;
}

/* ============================================================
   ヒーロー（映像差し替え前提の仮組み：写真＋ゆっくりズーム）
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--paper);
}
.hero-media,
.hero-media img,
.hero-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* 映像に差し替えるまでの「動き」：25秒かけたごく緩やかなズーム */
.hero-media img {
  animation: heroZoom 26s ease-in-out infinite alternate;
  transform-origin: 60% 45%;
}
@keyframes heroZoom {
  from { transform: scale(1); }
  to   { transform: scale(1.09); }
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to bottom, rgba(20,18,15,.55) 0%, rgba(20,18,15,.15) 38%, rgba(20,18,15,.72) 100%),
    radial-gradient(ellipse at 68% 42%, transparent 30%, rgba(20,18,15,.55) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1160px, 92vw);
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 120px 0 140px;
}

/* 縦書きタイトル */
.hero-title {
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(44px, 7vh, 72px);
  letter-spacing: .28em;
  line-height: 1.55;
  height: min(80vh, 700px);
  text-shadow: 0 2px 30px rgba(0,0,0,.5);
  justify-self: end;
  display: flex;
  align-items: flex-start;
}
.hero-title .small {
  font-size: .42em;
  letter-spacing: .34em;
  color: var(--gold-light);
  margin-top: .8em;
}

/* 落款（らっかん）風の朱印 */
.hero-seal {
  writing-mode: vertical-rl;
  align-self: flex-end;
  margin-top: 28px;
  background: var(--shu);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: .2em;
  padding: 12px 7px;
  border-radius: 2px;
  box-shadow: 0 4px 14px rgba(0,0,0,.4);
}

.hero-info { align-self: end; padding-bottom: 4px; }
.hero-info .en-label { margin-bottom: 16px; }
.hero-lede {
  font-family: var(--serif);
  font-size: clamp(17px, 1.6vw, 22px);
  letter-spacing: .12em;
  line-height: 2.2;
  margin-bottom: 34px;
  text-shadow: 0 1px 18px rgba(0,0,0,.6);
}
.hero-date {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 26px;
  border-top: 1px solid rgba(197,160,89,.45);
  border-bottom: 1px solid rgba(197,160,89,.45);
  padding: 16px 4px;
  margin-bottom: 38px;
  font-family: var(--serif);
}
.hero-date .d { font-size: clamp(24px, 2.6vw, 34px); letter-spacing: .08em; }
.hero-date .t { font-size: clamp(15px, 1.4vw, 18px); color: var(--gold-light); letter-spacing: .16em; }

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  z-index: 2;
  font-size: 10px;
  letter-spacing: .4em;
  color: rgba(255,253,249,.75);
  text-transform: uppercase;
  padding-bottom: 46px;
}
.scroll-cue::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: cue 2.2s ease-in-out infinite;
}
@keyframes cue {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================================
   コンセプト
   ============================================================ */
.concept {
  background: var(--paper);
  padding: var(--section-pad) 0;
  position: relative;
}
.concept-copy {
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 26px);
  line-height: 2.6;
  letter-spacing: .1em;
  text-align: center;
}
.concept-copy strong {
  font-weight: 600;
  background: linear-gradient(transparent 68%, rgba(197,160,89,.35) 68%);
}
.concept-copy .pause { display: block; height: 2.2em; }
.concept .quote {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-9.5em);
  font-family: var(--serif);
  font-size: 130px;
  color: var(--gold);
  opacity: .14;
  pointer-events: none;
}

/* ============================================================
   津軽塗とは（漆黒セクション）
   ============================================================ */
.about {
  background: linear-gradient(160deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  padding: var(--section-pad) 0;
  position: relative;
  overflow: hidden;
}
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}
.about-body p { margin-bottom: 1.6em; }
.about-body .lead {
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 25px);
  letter-spacing: .1em;
  line-height: 2.2;
  color: var(--gold-light);
}
.about-visual { position: relative; }
.about-visual .main {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0,0,0,.55);
}
.about-visual .accent {
  position: absolute;
  width: 44%;
  bottom: -13%;
  left: -9%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(197,160,89,.5);
  box-shadow: 0 20px 44px rgba(0,0,0,.5);
}
.about-figures {
  display: flex;
  gap: clamp(28px, 5vw, 72px);
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid rgba(197,160,89,.3);
}
.figure .num {
  font-family: var(--serif);
  font-size: clamp(34px, 3.6vw, 48px);
  color: var(--gold);
  letter-spacing: .04em;
  line-height: 1.3;
}
.figure .num small { font-size: .45em; letter-spacing: .12em; }
.figure .cap { font-size: 13px; letter-spacing: .18em; color: rgba(255,253,249,.72); }

/* ============================================================
   体験の流れ
   ============================================================ */
.flow { background: var(--greige); padding: var(--section-pad) 0; }
.flow-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(18px, 2.4vw, 30px);
  counter-reset: step;
  list-style: none;
}
.flow-item {
  background: var(--paper);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  padding: 38px 28px 34px;
  position: relative;
}
.flow-item::before {
  counter-increment: step;
  content: '0' counter(step);
  font-family: var(--serif);
  font-size: 44px;
  color: var(--gold);
  line-height: 1;
  display: block;
  margin-bottom: 18px;
}
.flow-item::after {
  content: '';
  position: absolute;
  top: 40px;
  left: 92px;
  right: 28px;
  height: 1px;
  background: linear-gradient(to right, rgba(197,160,89,.55), transparent);
}
.flow-item h3 {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: .1em;
  line-height: 1.7;
  margin-bottom: 14px;
}
.flow-item p { font-size: 15px; line-height: 1.9; color: var(--mocha); }
.flow-photo {
  margin-top: clamp(40px, 6vh, 64px);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0,0,0,.14);
  max-height: 460px;
}
.flow-photo img { width: 100%; height: 100%; object-fit: cover; }

/* ============================================================
   講師
   ============================================================ */
.teacher {
  background: linear-gradient(200deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  padding: var(--section-pad) 0;
}
.teacher-grid {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}
.teacher-visual {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0,0,0,.55);
  position: relative;
}
.teacher-visual .tag {
  position: absolute;
  left: 0;
  bottom: 0;
  background: rgba(20,18,15,.82);
  backdrop-filter: blur(6px);
  padding: 10px 20px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--gold-light);
}
.teacher-name {
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 42px);
  letter-spacing: .14em;
  margin-bottom: 8px;
}
.teacher-name small {
  display: block;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: .3em;
  color: var(--gold);
  margin-bottom: 14px;
}
.teacher-role {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: .18em;
  color: var(--gold-light);
  margin-bottom: 30px;
}
.teacher-body p { margin-bottom: 1.5em; font-size: clamp(16px, 1.2vw, 18px); color: rgba(255,253,249,.9); }
.teacher-note { font-size: 13px; color: rgba(255,253,249,.55); letter-spacing: .06em; }

/* ============================================================
   開催概要
   ============================================================ */
.outline { background: var(--paper); padding: var(--section-pad) 0; }
.outline-card {
  background: var(--paper);
  border: 1px solid rgba(197,160,89,.45);
  border-radius: 16px;
  padding: clamp(36px, 5vw, 64px);
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
}
.outline-table { width: 100%; border-collapse: collapse; }
.outline-table th,
.outline-table td {
  text-align: left;
  padding: 20px 8px;
  border-bottom: 1px solid rgba(30,28,26,.1);
  vertical-align: top;
  font-size: clamp(16px, 1.25vw, 19px);
  line-height: 1.9;
}
.outline-table tr:last-child th,
.outline-table tr:last-child td { border-bottom: none; }
.outline-table th {
  width: 9em;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--mocha);
  white-space: nowrap;
}
.outline-table .price-strong {
  font-family: var(--serif);
  font-size: 1.35em;
  letter-spacing: .04em;
}
.outline-table small { color: var(--mocha); font-size: .82em; }

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--greige); padding: var(--section-pad) 0; }
.faq-item {
  background: var(--paper);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,.06);
  margin-bottom: 18px;
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 26px 66px 26px 30px;
  font-weight: 700;
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.8;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: 'Q';
  font-family: var(--serif);
  color: var(--gold);
  font-size: 24px;
  flex-shrink: 0;
}
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-size: 26px;
  color: var(--gold);
  transition: transform .3s ease;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item .a {
  display: flex;
  gap: 18px;
  padding: 0 30px 28px;
  color: var(--mocha);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 2.0;
}
.faq-item .a::before {
  content: 'A';
  font-family: var(--serif);
  color: var(--shu);
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1.4;
}

/* ============================================================
   チケット
   ============================================================ */
.ticket {
  position: relative;
  background: var(--ink-deep);
  color: var(--paper);
  padding: var(--section-pad) 0;
  overflow: hidden;
}
.ticket::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../img/texture.jpg') center / cover;
  opacity: .16;
}
.ticket::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(20,18,15,.25) 0%, rgba(20,18,15,.92) 78%);
}
.ticket .wrap { position: relative; z-index: 2; }
.ticket-card {
  max-width: 620px;
  margin: 0 auto;
  background: rgba(255,253,249,.045);
  border: 1px solid rgba(197,160,89,.55);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  padding: clamp(40px, 6vw, 64px);
  text-align: center;
}
.ticket-badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--gold-light);
  border: 1px solid rgba(197,160,89,.6);
  border-radius: 100px;
  padding: 7px 22px;
  margin-bottom: 26px;
}
.ticket-title {
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: .12em;
  line-height: 1.9;
  margin-bottom: 30px;
}
.ticket-price {
  font-family: var(--serif);
  font-size: clamp(52px, 6vw, 72px);
  letter-spacing: .02em;
  line-height: 1.2;
  color: var(--gold-light);
}
.ticket-price small { font-size: .32em; letter-spacing: .14em; color: rgba(255,253,249,.85); }
.ticket-tax { font-size: 13px; letter-spacing: .2em; color: rgba(255,253,249,.6); margin-bottom: 36px; }
.ticket-note {
  margin-top: 30px;
  font-size: 13px;
  line-height: 2.1;
  color: rgba(255,253,249,.66);
  letter-spacing: .04em;
}
.ticket-deadline {
  margin-top: 34px;
  font-family: var(--serif);
  letter-spacing: .16em;
  font-size: 15px;
  color: var(--gold-light);
}

/* ============================================================
   フッター
   ============================================================ */
.footer {
  background: var(--ink);
  color: rgba(255,253,249,.72);
  padding: 60px 0 40px;
  font-size: 13px;
  letter-spacing: .08em;
}
.footer .brandline {
  font-family: var(--serif);
  color: var(--paper);
  font-size: 17px;
  letter-spacing: .22em;
  margin-bottom: 6px;
}
.footer .brandline small { color: var(--gold); font-size: 10px; letter-spacing: .34em; display: block; margin-top: 4px; }
.footer-links { display: flex; gap: 28px; margin: 26px 0 18px; flex-wrap: wrap; }
.footer-links a { border-bottom: 1px solid rgba(197,160,89,.4); padding-bottom: 2px; transition: color .3s; }
.footer-links a:hover { color: var(--gold-light); }
.footer .copyright { color: rgba(255,253,249,.4); font-size: 11px; letter-spacing: .18em; }

/* ============================================================
   スクロール・リビール
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s cubic-bezier(.22,.61,.36,1), transform 1s cubic-bezier(.22,.61,.36,1);
  transition-delay: var(--d, 0s);
}
.reveal.on { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .hero-media img { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 900px) {
  .flow-list { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .teacher-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
  .about-visual .accent { display: none; }
}

@media (max-width: 640px) {
  .hero-inner {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 96px 0 90px;
  }
  .hero-title {
    order: -1;
    align-self: flex-end;
    height: auto;
    font-size: clamp(32px, 10vw, 42px);
    letter-spacing: .24em;
    margin: 0 4px 26px 0;
  }
  .hero-seal { font-size: 12px; margin-top: 18px; padding: 9px 6px; }
  .hero-lede { font-size: 16px; margin-bottom: 24px; }
  .hero-date { padding: 12px 2px; margin-bottom: 28px; }
  .hero-info .en-label { margin-bottom: 12px; }
  .header .btn-cta { padding: 9px 18px; font-size: 12px; letter-spacing: .08em; }
  .flow-list { grid-template-columns: 1fr; }
  .btn-cta { width: 100%; }
  .outline-table th { width: auto; display: block; padding-bottom: 0; border-bottom: none; }
  .outline-table td { display: block; padding-top: 6px; }
  .concept .quote { transform: translateX(-50%); left: 14%; }
  .about-figures { flex-wrap: wrap; }
}