/* ===== Tokyo Photo Walk Circle — styles (light / soft theme) ===== */
:root{
  --bg:#ffffff;          /* 背景：白 */
  --bg-alt:#fff5fa;      /* 補助背景：ごく淡いピンク */
  --bg-blue:#f1faff;     /* 補助背景：ごく淡い水色 */
  --panel:#ffffff;       /* カード */
  --line:#eef0f4;        /* 罫線・カード枠 */
  --text:#33363f;        /* 本文（やわらかい黒） */
  --muted:#8b909c;       /* 補助テキスト */
  --pink:#ff8ab6;        /* アクセント：やわらかピンク（装飾） */
  --pink-ink:#f0508f;    /* ピンク：文字・ボタン用（濃いめ） */
  --blue:#8fd6ef;        /* アクセント：水色（装飾） */
  --blue-ink:#2aa6cf;    /* 水色：文字用（濃いめ） */
  --shadow:0 14px 40px rgba(120,130,150,.12);
  --shadow-sm:0 6px 18px rgba(120,130,150,.10);
  --maxw:1120px;
  --r:20px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans JP",system-ui,sans-serif;
  font-weight:400;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:"Chakra Petch",sans-serif}

/* section anchor offset for sticky header */
section[id]{scroll-margin-top:72px}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease,box-shadow .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 20px rgba(120,130,150,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.brand-name{font-size:16px}
.brand-mark{
  width:22px;height:22px;flex:none;position:relative;
  border:2px solid var(--blue-ink);border-radius:5px;
}
.brand-mark::after{content:"";position:absolute;inset:0;margin:auto;width:7px;height:7px;border-radius:50%;background:var(--pink-ink)}
.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:14.5px;color:var(--muted);transition:color .2s}
.nav a:hover{color:var(--text)}
.nav .nav-cta{color:#fff;background:var(--pink-ink);padding:8px 18px;border-radius:999px;font-weight:700;box-shadow:0 6px 16px rgba(240,80,143,.30)}
.nav .nav-cta:hover{color:#fff;filter:brightness(1.04);transform:translateY(-1px)}
.nav .nav-ig{font-family:"Chakra Petch",sans-serif;color:var(--blue-ink);display:inline-flex;align-items:center}
.nav .nav-ig .ig-ico{width:23px;height:23px}
.nav .nav-ig:hover{color:var(--pink-ink)}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.menu-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center 22%;transform:scale(1.04)}
.hero-veil{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(20,24,36,.58) 0%,rgba(20,24,36,.22) 32%,rgba(20,24,36,.40) 66%,rgba(255,255,255,.92) 96%,var(--bg) 100%),
  radial-gradient(120% 80% at 50% 30%,rgba(143,214,239,.20),rgba(255,138,182,.16) 45%,transparent 72%);}
.hero-content{position:relative;z-index:2;padding-top:90px;padding-bottom:120px;color:#fff}
.hero-kicker{font-family:"Chakra Petch",sans-serif;font-weight:600;letter-spacing:.42em;color:#fff;font-size:14px;margin-bottom:18px;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.hero-title{font-weight:900;font-size:clamp(34px,7vw,72px);line-height:1.16;letter-spacing:.01em;color:#fff;text-shadow:0 4px 30px rgba(0,0,0,.45)}
.hero-sub{margin-top:22px;max-width:46ch;color:#f3f5f9;font-size:clamp(15px,2.3vw,18px);line-height:1.85;text-shadow:0 2px 16px rgba(0,0,0,.4)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-meta{margin-top:24px;font-family:"Chakra Petch",sans-serif;font-size:13.5px;letter-spacing:.04em;color:#eef1f6;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;transition:transform .15s ease,filter .2s ease,background .2s,color .2s,box-shadow .2s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--pink-ink);color:#fff;box-shadow:0 10px 26px rgba(240,80,143,.40)}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(2px)}
.btn-ghost:hover{background:#fff;color:var(--text);border-color:#fff}
.btn-ig{background:var(--pink-ink);color:#fff;margin-top:22px;box-shadow:0 10px 26px rgba(240,80,143,.35)}

/* viewfinder brackets */
.bracket{position:absolute;width:42px;height:42px;z-index:2;pointer-events:none}
.bracket.tl{top:84px;left:24px;border-top:2px solid rgba(255,255,255,.85);border-left:2px solid rgba(255,255,255,.85)}
.bracket.tr{top:84px;right:24px;border-top:2px solid rgba(255,255,255,.85);border-right:2px solid rgba(255,255,255,.85)}
.bracket.bl{bottom:40px;left:24px;border-bottom:2px solid rgba(255,255,255,.85);border-left:2px solid rgba(255,255,255,.85)}
.bracket.br{bottom:40px;right:24px;border-bottom:2px solid rgba(255,255,255,.85);border-right:2px solid rgba(255,255,255,.85)}
.scroll-cue{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);z-index:2;font-family:"Chakra Petch",sans-serif;font-size:11px;letter-spacing:.3em;color:#fff;writing-mode:vertical-rl;text-shadow:0 2px 10px rgba(0,0,0,.4)}
.scroll-cue::after{content:"";display:block;width:1px;height:34px;margin:8px auto 0;background:linear-gradient(#fff,transparent);animation:cue 1.8s infinite}
@keyframes cue{0%{opacity:0;transform:scaleY(.3)}50%{opacity:1}100%{opacity:0;transform:scaleY(1)}}

/* ===== Sections ===== */
.section{padding:100px 0}
.section-alt{background:var(--bg-alt)}
.sec-kicker{font-family:"Chakra Petch",sans-serif;font-weight:600;letter-spacing:.34em;color:var(--blue-ink);font-size:13px;margin-bottom:14px}
.sec-title{font-weight:900;font-size:clamp(26px,4.4vw,42px);line-height:1.35;letter-spacing:.01em;color:var(--text)}
.sec-lead{margin-top:16px;color:var(--muted);max-width:60ch}

/* About */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;margin-top:46px;align-items:start}
.about-text p{color:#52565f;margin-bottom:18px}
.about-text strong{color:var(--pink-ink);font-weight:700}
.feature-list{display:flex;flex-direction:column;gap:18px}
.feature-list li{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:26px 28px;box-shadow:var(--shadow-sm)}
.feature-list h3{font-size:18px;margin:6px 0 8px;color:var(--text)}
.feature-list p{color:var(--muted);font-size:14.5px;line-height:1.8}
.feat-no{font-family:"Chakra Petch",sans-serif;font-size:13px;letter-spacing:.1em;color:var(--blue-ink)}
.feat-accent{border-color:rgba(255,138,182,.5);background:linear-gradient(180deg,#fff3f8,#ffffff)}
.feat-accent .feat-no{color:var(--pink-ink)}

/* Schedule */
.schedule-list{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:40px}
.sch-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px 26px;box-shadow:var(--shadow-sm);transition:border-color .2s,transform .2s,box-shadow .2s}
.sch-card:hover{border-color:rgba(143,214,239,.8);transform:translateY(-3px);box-shadow:var(--shadow)}
.sch-card.open:hover{transform:none}
.sch-card.next{border-color:rgba(255,138,182,.7);background:linear-gradient(180deg,#fff5fa,#ffffff);box-shadow:0 10px 30px rgba(240,80,143,.14)}
.sch-main{display:flex;align-items:center;gap:22px}
.sch-date{flex:none;display:flex;flex-direction:column;align-items:flex-start;line-height:1;font-family:"Chakra Petch",sans-serif}
.sch-date .d-year{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:2px}
.sch-date .d-mon{font-size:40px;font-weight:700;color:var(--blue-ink)}
.sch-date .d-day{font-size:40px;font-weight:700;margin-top:-6px;color:var(--text)}
.sch-date .d-dow{font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--pink-ink);margin-top:8px}
.sch-body{flex:1;min-width:0}
.sch-body h3{font-size:17px;margin-bottom:6px;color:var(--text);word-break:keep-all;overflow-wrap:anywhere}
.sch-vol{font-family:"Chakra Petch",sans-serif;font-size:12px;color:var(--blue-ink);letter-spacing:.06em;margin-left:4px}
.sch-info{font-size:14px;color:#52565f}
.sch-note{font-size:12.5px;color:var(--muted);margin-top:3px}
.sch-btn{flex:none;align-self:center;font-size:13px;font-weight:700;color:var(--pink-ink);border:1.5px solid rgba(240,80,143,.55);border-radius:999px;padding:8px 16px;transition:.2s}
.sch-btn:hover{background:var(--pink-ink);color:#fff}

/* schedule detail accordion */
.sch-detail-toggle{margin-top:11px;background:none;border:0;cursor:pointer;font-family:"Chakra Petch",sans-serif;font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--blue-ink);display:inline-flex;align-items:center;gap:6px;padding:2px 0;transition:color .2s}
.sch-detail-toggle:hover{color:var(--pink-ink)}
.sch-detail-toggle .chev{font-size:10px;transition:transform .3s ease}
.sch-detail-toggle[aria-expanded="true"] .chev{transform:rotate(180deg)}
.sch-detail{max-height:0;overflow:hidden;opacity:0;transition:max-height .4s ease,opacity .3s ease}
.sch-detail.open{max-height:1200px;opacity:1}
.sch-detail-inner{margin-top:16px;padding-top:16px;border-top:1px dashed #e3e6ec}
.sch-detail-inner p{font-size:13.5px;color:#52565f;line-height:1.75;margin-bottom:9px}
.sch-detail-inner p:last-child{margin-bottom:0}
.sch-detail-inner b{color:var(--blue-ink);font-weight:700;margin-right:8px}

/* schedule status tags */
.sch-tags{display:flex;gap:7px;margin-bottom:9px;flex-wrap:wrap}
.sch-tag{font-family:"Chakra Petch",sans-serif;font-size:11px;font-weight:700;letter-spacing:.06em;padding:3px 11px;border-radius:999px;line-height:1.6}
.tag-open{background:#ffe3ef;color:var(--pink-ink)}
.tag-few{background:var(--pink-ink);color:#fff;animation:tagPulse 1.7s ease-in-out infinite}
.tag-closed{background:#eef0f4;color:var(--muted)}
.tag-count{background:#fff;color:#52565f;border:1px solid var(--line)}
.tag-before{background:var(--bg-blue);color:var(--blue-ink);border:1px solid #cfe9f4}
.tag-done{background:#e7e9ee;color:#6b7079}
@keyframes tagPulse{0%,100%{box-shadow:0 0 0 0 rgba(240,80,143,.5)}50%{box-shadow:0 0 0 5px rgba(240,80,143,0)}}
@media(prefers-reduced-motion:reduce){.tag-few{animation:none}}
.sch-btn.is-closed{color:var(--muted);border-color:#dcdfe6;background:none;cursor:default;pointer-events:none}
.sch-deadline{font-family:"Chakra Petch",sans-serif;font-size:12px;font-weight:700;letter-spacing:.02em;color:#5a6270;margin-top:7px}
.sch-flyer{display:block;width:100%;max-width:260px;height:auto;margin:0 0 16px;border-radius:12px;cursor:pointer;box-shadow:var(--shadow-sm);border:1px solid var(--line);transition:transform .2s}
.sch-flyer:hover{transform:scale(1.02)}

.flow{margin-top:38px;background:var(--bg-blue);border:1px solid #e2f1f8;border-radius:var(--r);padding:30px 32px}
.flow-title{font-size:16px;margin-bottom:18px;color:var(--text)}
.flow-steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.flow-steps li{display:flex;flex-direction:column;gap:5px;padding-left:16px;border-left:2px solid var(--blue)}
.flow-time{font-family:"Chakra Petch",sans-serif;font-weight:700;color:var(--blue-ink);font-size:15px}
.flow-label{font-size:13.5px;color:#6b7079;line-height:1.6}
.flow-foot{margin-top:16px;font-size:12.5px;color:var(--muted)}

/* Gallery */
.gallery{margin-top:40px;display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:200px;gap:14px}
.g-item{overflow:hidden;border-radius:16px;cursor:pointer;position:relative;background:#eef0f4;box-shadow:var(--shadow-sm)}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease,opacity .3s}
.g-item:hover img{transform:scale(1.06)}
.g-tall{grid-row:span 2}
.g-wide{grid-column:span 2}
.gallery-credit{margin-top:18px;font-size:13px;color:var(--muted);font-family:"Chakra Petch",sans-serif}
.gallery-credit a{color:var(--blue-ink)}

/* Activity log */
.log-list{margin-top:40px;display:flex;flex-direction:column;gap:20px}
.log-card{display:grid;grid-template-columns:260px 1fr;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm)}
.log-thumb{background-size:cover;background-position:center;min-height:180px}
.log-body{padding:28px 32px}
.log-meta{font-family:"Chakra Petch",sans-serif;font-size:11.5px;letter-spacing:.04em;color:var(--muted);margin-bottom:5px}
.log-date{font-family:"Chakra Petch",sans-serif;font-size:13px;letter-spacing:.06em;color:var(--blue-ink);margin-bottom:8px}
.log-body h3{font-size:19px;margin-bottom:10px;color:var(--text)}
.log-body p{color:#52565f;font-size:14.5px}
.log-tag{display:inline-block;margin-top:14px;font-family:"Chakra Petch",sans-serif;font-size:11px;letter-spacing:.12em;color:#fff;background:var(--blue-ink);padding:4px 12px;border-radius:999px;font-weight:700}
.log-upcoming .log-tag{background:var(--pink-ink);color:#fff}
.log-gallery{margin-top:16px;display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
.log-gallery img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;cursor:pointer;background:#eef0f4;box-shadow:var(--shadow-sm);transition:transform .3s ease}
.log-gallery img:hover{transform:scale(1.04)}

/* Join */
.join-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;margin-top:44px}
.join-card{background:linear-gradient(180deg,#fff5fa,#ffffff);border:1px solid rgba(255,138,182,.45);border-radius:var(--r);padding:36px 36px 40px;box-shadow:var(--shadow)}
.join-card h3{font-size:20px;margin-bottom:18px;color:var(--text)}
.join-steps{list-style:none;display:flex;flex-direction:column;gap:14px}
.join-steps li{font-size:15.5px;color:#52565f}
.join-steps b{font-family:"Chakra Petch",sans-serif;color:var(--pink-ink);margin-right:8px}
.join-steps a{color:var(--pink-ink);font-weight:700}
.join-small{margin-top:16px;font-size:12.5px;color:var(--muted)}
.join-meta{background:var(--bg-blue);border:1px solid #e2f1f8;border-radius:var(--r);padding:32px}
.join-meta dl{display:flex;flex-direction:column;gap:0}
.join-meta dl > div{display:grid;grid-template-columns:84px 1fr;gap:12px;padding:13px 0;border-bottom:1px solid #dcebf2}
.join-meta dl > div:first-child{border-top:0}
.join-meta dt{font-weight:700;color:var(--blue-ink);font-size:14px}
.join-meta dd{color:#52565f;font-size:14px}
.future{margin-top:24px}
.future h4{font-size:14px;margin-bottom:12px;color:var(--text)}
.future-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.future-tags li{font-size:13px;color:var(--blue-ink);background:#fff;border:1px solid #d7eef7;border-radius:999px;padding:5px 13px}
.future-note{margin-top:14px;font-size:12.5px;color:var(--muted)}

/* FAQ */
.faq-list{margin-top:40px;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:22px 26px;box-shadow:var(--shadow-sm)}
.faq-item h3{font-size:16px;color:var(--text);margin-bottom:9px;display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.faq-item h3::before{content:"Q";font-family:"Chakra Petch",sans-serif;color:var(--pink-ink);font-weight:700;flex:none}
.faq-item p{color:#52565f;font-size:14.5px;line-height:1.85;padding-left:26px}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding:44px 0;background:var(--bg-alt)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:11px;font-weight:700;color:var(--text)}
.footer-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.footer-ig{font-family:"Chakra Petch",sans-serif;color:var(--pink-ink);font-size:14px;display:inline-flex;align-items:center;gap:7px}
.footer-ig .ig-ico{width:18px;height:18px}
.footer-ig:hover{color:var(--blue-ink)}
.footer-portfolio{font-size:13.5px;color:var(--blue-ink);font-weight:700}
.footer-portfolio:hover{color:var(--pink-ink)}
.footer-copy{font-size:12.5px;color:var(--muted);font-family:"Chakra Petch",sans-serif}
.ig-ico{width:1.2em;height:1.2em;vertical-align:-0.25em;flex:none}

/* Lightbox */
.lightbox{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;background:rgba(40,44,56,.78);backdrop-filter:blur(4px);padding:30px}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:12px;box-shadow:0 24px 70px rgba(0,0,0,.4)}
.lb-close{position:absolute;top:20px;right:26px;font-size:34px;line-height:1;color:#fff;background:none;border:0;cursor:pointer;opacity:.85}
.lb-close:hover{opacity:1}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media(max-width:880px){
  .about-grid{grid-template-columns:1fr;gap:34px}
  .schedule-list{grid-template-columns:1fr}
  .flow-steps{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:160px}
  .g-wide{grid-column:span 2}
  .g-tall{grid-row:span 1}
  .join-grid{grid-template-columns:1fr}
  .log-card{grid-template-columns:1fr}
  .log-thumb{min-height:200px}
}
@media(max-width:720px){
  .menu-toggle{display:flex}
  .nav{
    position:fixed;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.98);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    box-shadow:0 12px 30px rgba(120,130,150,.12);
    padding:8px 24px 20px;
    transform:translateY(-130%);transition:transform .35s ease;
    max-height:calc(100svh - 64px);overflow:auto;
  }
  .nav.open{transform:translateY(0)}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--text)}
  .nav .nav-cta{margin-top:14px;text-align:center;border-bottom:0;color:#fff}
  .nav .nav-ig{border-bottom:0;color:var(--blue-ink)}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .section{padding:76px 0}
  .brand-name{font-size:14.5px}
  .flow-steps{grid-template-columns:1fr}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px}
}
@media(max-width:600px){
  .sch-main{flex-direction:column;align-items:stretch;gap:12px}
  .sch-date{flex-direction:row;align-items:baseline;gap:8px}
  .sch-date .d-mon,.sch-date .d-day{font-size:30px}
  .sch-date .d-day{margin-top:0}
  .sch-date .d-dow{margin-top:0;align-self:center}
  .sch-body h3{font-size:16px}
  .sch-btn{align-self:flex-start}
}
@media(max-width:420px){
  .gallery{grid-template-columns:1fr;grid-auto-rows:220px}
  .g-wide{grid-column:span 1}
  .hero-actions{flex-direction:column}
  .btn{width:100%}
}