/* ============================================
   観光パラダイス / base (v6: mits-style corporate)
   ============================================ */

:root {
  /* base */
  --ink: #0E2545;          /* deep navy */
  --ink-2: #1A3260;
  --body: #2E3A52;
  --body-2: #6A7589;
  --paper: #FFFFFF;
  --paper-2: #F4F6FA;
  --paper-3: #E7ECF2;
  --line: #DCE3EC;
  --line-thin: #EBEFF4;

  /* primary corporate blue */
  --blue: #1E5BB7;
  --blue-2: #154693;
  --blue-3: #0F3F8A;
  --blue-bg: #1E5BB7;       /* full-width blue section */

  /* primary CTA orange */
  --orange: #E84A2A;
  --orange-2: #C93A1F;

  /* per-event accent */
  --ev-tetsudo: #1E5BB7;   /* blue (主) */
  --ev-sake: #C2562F;       /* terracotta */
  --ev-music: #2F7C5F;      /* deep green */

  /* pop accent (CTA / お祭り) */
  --pop-yellow: #FFC83D;
  --pop-yellow-2: #E5B12E;
  --pop-red: #E0344B;
  --pop-red-2: #C42539;

  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-en: "Inter", "Noto Sans JP", sans-serif;
  --font-display: "Bebas Neue", "Anton", sans-serif;

  --max: 1180px;
  --gutter: clamp(20px, 4vw, 48px);

  --radius: 4px;
  --radius-sm: 2px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--body);
  background: var(--paper);
  line-height: 1.85;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
}

img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.5;
  margin: 0;
  color: var(--ink);
}

/* ============== utility ============== */
.container { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* ============== buttons ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-width: 200px;
  padding: 16px 26px;
  background: var(--orange);
  color: #fff;
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.06em;
  border: none;
  transition: background 0.2s, transform 0.15s;
  position: relative;
}
.btn::after {
  content: "→";
  margin-left: auto;
}
.btn:hover { background: var(--orange-2); }
.btn:active { transform: translateY(1px); }

.btn.blue { background: var(--blue); }
.btn.blue:hover { background: var(--blue-2); }

.btn.outline {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.btn.outline:hover { background: var(--ink); color: #fff; }

.btn.white { background: #fff; color: var(--ink); }
.btn.white:hover { background: var(--paper-2); }

/* ============== header ============== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px clamp(20px, 4vw, 36px);
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.brand--bamtetsu-logo { min-width: 0; }
.brand-event-logo {
  display: block;
  width: auto;
  height: clamp(34px, 4vw, 50px);
  max-width: min(44vw, 360px);
  object-fit: contain;
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text b {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.brand-text span {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--body-2);
  text-transform: uppercase;
}

.nav { display: flex; gap: 4px; align-items: center; }
.nav a {
  padding: 10px 14px;
  font-weight: 700;
  font-size: 13px;
  color: var(--ink);
  transition: color 0.2s;
  position: relative;
}
.nav a:hover { color: var(--blue); }
.nav a.is-active { color: var(--blue); }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 0;
  height: 2px;
  background: var(--blue);
}

.nav .nav-cta {
  margin-left: 12px;
  padding: 12px 22px;
  background: var(--orange);
  color: #fff;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav .nav-cta:hover { background: var(--orange-2); color: #fff; }
.nav .nav-cta::after { content: "→"; }

/* ============== section heading (Japanese only) ============== */
.h-block {
  text-align: center;
  margin: 0 auto 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: 660px;
  position: relative;
  padding-top: 20px;
}
.h-block::before {
  content: "";
  width: 36px;
  height: 3px;
  background: var(--orange);
  margin: 0 auto 8px;
}

.h-block .h-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0;
}
.h-block.on-blue .h-title { color: #fff; }

.h-block .h-sub {
  font-size: 14px;
  color: var(--body);
  max-width: 56ch;
  line-height: 2;
  margin: 0;
}
.h-block.on-blue .h-sub { color: rgba(255,255,255,0.85); }

/* ============== footer ============== */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.85);
  padding: 80px var(--gutter) 36px;
}
.site-footer .foot-top {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}
.foot-brand h2 {
  color: #fff;
  font-size: 22px;
  line-height: 1.45;
  margin-bottom: 14px;
}
.foot-brand p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  max-width: 36ch;
  line-height: 1.95;
}

.foot-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.foot-list a, .foot-list li { font-size: 13px; color: rgba(255, 255, 255, 0.78); }
.foot-list a:hover { color: var(--orange); }

.foot-list .foot-h {
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.foot-meta {
  max-width: var(--max);
  margin: 24px auto 0;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 900px) {
  .nav { gap: 0; }
  .nav a:not(.nav-cta) { display: none; }
  .brand-event-logo {
    height: 34px;
    max-width: 48vw;
  }
  .brand-text span {
    white-space: nowrap;
    font-size: 9px;
    letter-spacing: 0.08em;
  }
  .site-footer .foot-top { grid-template-columns: 1fr; gap: 28px; }
  .foot-meta { flex-direction: column; gap: 10px; }
}