/***** Base / Theme *****/
:root{
  --bg:#f7f7f7;
  --surface:#ffffff;
  --ink:#222;
  --ink-weak:#666;
  --accent:#3a7bd5;
  --maxw: 1080px;
  --radius: 14px;
  --shadow: 0 10px 24px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}

/* ===== Layout ===== */
.container{width:min(92%, var(--maxw)); margin-inline:auto}

/* ===== Header / Nav ===== */
header{
  position:sticky; top:0; z-index:50;
  background:skyblue;
  border-bottom:1px solid #e5e5e5;
  backdrop-filter: saturate(1.2) blur(4px);
}
.nav{
  display:flex; align-items:center; gap:24px;
  min-height:64px;
}
.logo{
  display:flex; align-items:center;
  gap:10px;
  padding:6px 0;
}
.logo__box{
  width:180px; height:40px;
  border:2px solid #9aa8b0;
  background:#eef3f7;
  display:grid; place-items:center;
  border-radius:8px;
  font-weight:700; color:#2f3a40;
}
.logo__img{
  display:block;
  height:50px;
  width:auto;
}
.logo__box{ display:none; }
/* 実際のロゴを差し込んだら display:block に変更 */

.nav__spacer{flex:1}
.menu{
  display:flex; gap:20px; flex-wrap:wrap;
  font-size:14px; color:#2f3a40;
}
.menu a{opacity:.9}
.menu a:hover{opacity:1; text-decoration:underline}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height: 56vh;
  display:grid; place-items:center;
  color:#fff;
  overflow:hidden;
  isolation:isolate;
}
.hero__bg{
  position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(0,0,0,.45), rgba(0,0,0,.35)),
    url("../img/room.jpeg") center / cover no-repeat;
  z-index:-1;
}
.hero[data-fallback="true"] .hero__bg{
  background:
    linear-gradient(180deg, rgba(0,0,0,.45), rgba(0,0,0,.35)),
    radial-gradient(1200px 600px at 70% 20%, #444, #222);
}
.hero__title{
  font-size: clamp(36px, 6vw, 64px);
  letter-spacing:.2em;
  text-shadow: 0 10px 24px rgba(0,0,0,.35);
}

/* ===== Sections ===== */
section{padding:64px 0}
.section__title{
  font-size: clamp(20px, 3.2vw, 28px);
  text-align:center;
  margin:0 0 28px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--ink);
}

/* ===== Calendar placeholder card ===== */
.card{
  background:var(--surface);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:18px;
}
.calendar-wrap{
  position:relative;
  border:1px solid #e7e7e7;
  border-radius:12px;
  overflow:hidden;
  background:#fafafa;
  min-height: 560px;
}
.calendar-placeholder{
  position:absolute; inset:0;
  display:grid; place-items:center; text-align:center;
  color:var(--ink-weak);
  padding:24px;
  font-size:14px;
}
.calendar-placeholder .badge{
  display:inline-block;
  padding:.25em .6em;
  border:1px dashed #bfc8cf;
  border-radius:999px;
  margin-bottom:10px;
  font-size:12px;
  color:#6b7a87;
  background:#f3f6f9;
}

/* --- Responsive calendar iframe fill --- */
.calendar-placeholder__inner{ position:absolute; inset:0; display:grid; }
.calendar-placeholder__inner iframe{ width:100%; height:100%; border:0; }

@media (min-width: 768px){
  .calendar-wrap{ min-height: 640px; }
}
@media (min-width: 1024px){
  .calendar-wrap{ min-height: 720px; }
}

/* ===== Footer ===== */
footer{
  margin-top:72px;
  background:#4a4a4a;
  color:#ddd;
  padding:28px 0;
  font-size:13px;
}
.copyright{opacity:.9; text-align:center}

/* ===== Responsive tweaks ===== */
@media (max-width: 720px){
  .menu{gap:14px}
  .logo__box{width:140px;height:36px}
}

/* ===== Terms ===== */
.terms {
  max-width: 720px;
  margin-inline: auto;
  padding: 0 24px 48px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-weak);
}
.terms p {
  margin-top: 0;
}
.terms h1 {
  font-weight: 700;
  font-size: 24px;
  margin-bottom: 24px;
  color: var(--ink);
}
.terms h2 {
  font-weight: 700;
  font-size: 18px;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--ink);
}
.terms ul {
  margin-top: 0;
  margin-bottom: 0;
  padding-left: 1em;
}
.terms li {
  margin-bottom: 8px;
}

@media (min-width: 1024px) {
  .terms {
    max-width: 900px;
  }
}
/* ===== Access Page ===== */
.access{padding:64px 0}
.map-wrap{position:relative;height:520px;border:1px solid #e7e7e7;border-radius:12px;overflow:hidden;background:#fafafa}
.map-placeholder{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:var(--ink-weak);padding:24px;font-size:14px}
.map-placeholder .badge{display:inline-block;padding:.25em .6em;border:1px dashed #bfc8cf;border-radius:999px;margin-bottom:10px;font-size:12px;color:#6b7a87;background:#f3f6f9}
.access-info{max-width:900px;margin:32px auto 0;padding:0 8px}
.access-info h2{font-size:18px;margin:28px 0 8px}
.access-info ul{margin:0 0 12px 1.2em}
@media (max-width:720px){.map-wrap{height:420px}}