*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --sea-deep:  #1b579a;
  --sea-mid:   #1A8AB4;
  --sea-light: #5BB5D5;
  --tide:      #E4F3FA;
  --sand:      #F7F2E8;
  --text:      #111;
  --text-sub:  #333;
  --border:    #D0E6F0;
  --radius:    8px;
  --shadow:    0 2px 8px rgba(11,80,112,.10);
}
body {
  font-family: "BIZ UDPGothic", sans-serif;
  font-size: 15px; color: var(--text); line-height: 1.7;
}
a { color: var(--sea-mid); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Header ===== */
.site-header {
  background: linear-gradient(160deg,var(--sea-deep) 0%,#1060A0 50%,var(--sea-mid) 100%);
  color:#fff; position:relative; overflow:hidden;
}
.header-inner { position:relative; max-width:1200px; margin:0 auto; padding:32px 24px 0; }
.header-label {
  display:inline-block; font-size:.8rem; letter-spacing:.1em;
  background:rgba(255,255,255,.18); border:1px solid rgba(255,255,255,.35);
  border-radius:20px; padding:4px 14px; margin-bottom:12px;
}
.header-title { font-size:clamp(1.6rem,4vw,2.4rem); font-weight:700; line-height:1.3; margin-bottom:8px; }
.header-subtitle { font-size:.95rem; opacity:.85; margin-bottom:20px; }
.header-period {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(255,255,255,.15); border-radius:6px;
  padding:8px 16px; font-size:.9rem; margin-bottom:28px;
}
.header-period strong { font-size:1rem; }
.header-wave { display:block; width:100%; margin-top:-2px; }

/* ===== 件数バー ===== */
.count-bar {
  border-radius:var(--radius);
  background:#fff; border-bottom:1px solid var(--border);
  box-shadow:0 2px 6px rgba(0,0,0,.06);
  margin-bottom:8px;
}
.count-bar-inner {
  max-width:1200px; margin:0 auto; padding:0 24px;
  display:flex; align-items:center; min-height:48px;
}
.result-count { font-size:.85rem; color:var(--text-sub); }
.result-count strong { color:var(--sea-deep); font-size:1.05rem; }

/* ===== Page Body ===== */
.page-body { max-width:1200px; margin: clamp(-15vh, calc(2vh - 10vw), -4vh) auto 0; padding:24px; }

/* ===== Filter Panel ===== */
.filter-panel {
  background:#fff; border:1px solid var(--border);
  border-radius:var(--radius); padding:16px 20px;
  margin-bottom:20px; box-shadow:var(--shadow);
}
.filter-row { display:flex; flex-wrap:wrap; gap:12px; align-items:flex-end;
  margin-top:12px; padding-top:12px; border-top:1px solid var(--border);}
.filter-group { display:flex; flex-direction:column; gap:5px; flex:2; min-width:200px; }
.filter-label { font-size:1rem; font-weight:700; color:var(--sea-deep); letter-spacing:.05em; }
.filter-input {
  border:1.5px solid var(--border); border-radius:6px;
  padding:8px 12px; font-size:.9rem; font-family:inherit;
  background:#fff; color:var(--text); width:100%; transition:border-color .15s;
}
.filter-input:focus { outline:none; border-color:var(--sea-mid); box-shadow:0 0 0 3px rgba(26,138,180,.15); }
.filter-reset {
  padding:8px 18px; background:var(--tide); border:1.5px solid var(--border);
  border-radius:6px; font-size:.85rem; font-family:inherit;
  color:var(--sea-deep); cursor:pointer; white-space:nowrap; transition:all .15s;
}
.filter-reset:hover { background:var(--sea-deep); color:#fff; border-color:var(--sea-deep); }
.filter-panel h2 { font-size: clamp(1.375rem, 1.1rem + 1.2vw, 2rem); color: var(--sea-deep); line-height:1; margin-bottom: 8px; text-align: left;}
.filter-panel .lead-txt { font-size: 0.9rem; line-hright: 1.6;}

/* ===== 府県ボタン ===== */
.pref-filter-row {
  display:flex; gap:6px; flex-wrap:wrap; align-items:center;
  margin-top:12px; padding-top:12px; border-top:1px solid var(--border);
}
.pref-filter-label { font-size:1rem; font-weight:700; color:var(--sea-deep); margin-right:4px; white-space:nowrap; }
.pref-btn {
  display:inline-flex; align-items:center; gap:4px;
  padding:4px 11px; border:1.5px solid var(--border); border-radius:20px;
  background:#fff; cursor:pointer; font-size:.8rem; font-family:inherit;
  color:var(--text-sub); transition:all .15s;
}
.pref-btn:hover { border-color:var(--sea-mid); color:var(--sea-mid); }
.pref-btn.active { background:var(--sea-deep); border-color:var(--sea-deep); color:#fff; }
.pref-btn[disabled] { opacity:.38; cursor:default; pointer-events:none; }
.pref-btn .cnt {
  display:inline-block; background:var(--tide); color:var(--sea-deep);
  border-radius:10px; padding:0 5px; font-size:.7rem; font-weight:700;
  min-width:18px; text-align:center; line-height:1.55;
}
.pref-btn.active .cnt { background:rgba(255,255,255,.25); color:#fff; }

/* ===== 月ボタン ===== */
.month-filter-row {
  display:flex; gap:8px; flex-wrap:wrap; align-items:center;
  margin-top:10px; padding-top:10px; border-top:1px solid var(--border);
}
.month-filter-label { font-size:1rem; font-weight:700; color:var(--sea-deep); margin-right:4px; }
.month-btn {
  display:inline-flex; align-items:center; gap:5px;
  padding:5px 14px; border:1.5px solid var(--border); border-radius:20px;
  background:#fff; cursor:pointer; font-size:.82rem; font-family:inherit;
  color:var(--text-sub); transition:all .15s;
}
.month-btn:hover { border-color:var(--sea-mid); color:var(--sea-mid); }
.month-btn.active { background:var(--sea-deep); border-color:var(--sea-deep); color:#fff; }
.month-btn .cnt {
  display:inline-block; background:var(--tide); color:var(--sea-deep);
  border-radius:10px; padding:0 6px; font-size:.72rem; font-weight:700;
  min-width:20px; text-align:center; line-height:1.6;
}
.month-btn.active .cnt { background:rgba(255,255,255,.25); color:#fff; }

/* ===== Empty State ===== */
.empty-state { text-align:center; padding:60px 20px; color:var(--text-sub); display:none; }
.empty-state.show { display:block; }
.empty-state-title { font-weight:700; font-size:1rem; color:var(--sea-deep); margin-bottom:6px; }

/* ===== カードグリッド ===== */
.events-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:16px;
}
.event-card {
  background:#fff; border:1px solid var(--border); border-radius:var(--radius);
  padding:18px 20px; box-shadow:var(--shadow);
  transition:transform .15s,box-shadow .15s; position:relative; overflow:hidden;
  display:flex;flex-direction:column;
}
.event-card::before {
  content:""; position:absolute; bottom:0; left:0; right:0; height:8px;
  background:linear-gradient(90deg,var(--sea-mid),var(--sea-light));
}
.event-card:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(11,80,112,.14); }
.event-card-header { display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:10px; gap:8px; }
.pref-tag {
  display:inline-block; background:var(--tide); color:var(--sea-deep);
  font-size:1rem; font-weight:700; padding:3px 10px; border-radius:8px; white-space:nowrap; flex-shrink:0;
}
.event-date-badge { text-align:right; line-height:1.3; flex-shrink:0; }
.event-date-month { font-size:.72rem; color:var(--text-sub); display:block; }
.event-date-day { font-size:1.05rem; font-weight:700; color:var(--sea-deep); display:block; }
.event-name { font-size:1.1rem; font-weight:700; color:var(--sea-deep); margin-bottom:8px; line-height:1.4; text-align:left; letter-spacing: .05em; }
.event-meta { display:flex; flex-direction:column; gap:4px; }
.event-meta-row { display:flex; align-items:flex-start; gap:6px; font-size:.8rem; color:var(--text-sub); }
.event-meta-icon { width:14px; height:14px; flex-shrink:0; margin-top:2px; color:var(--sea-light); }
.event-organizer { font-size:.8rem; color:var(--text-sub); margin-top:10px; padding-top:10px; border-top:1px solid var(--border); }
.event-link { display:flex; justify-content: flex-end; align-items:center; gap:4px; margin-top:auto;padding-top:10px; font-size:.9rem; color:var(--sea-deep); font-weight:700; }
.place-detail { color:var(--text-sub); font-size:.75rem; }
.event-note { margin-top:6px; font-size:.78rem; color:var(--text-sub); background:var(--sand); border-radius:4px; padding:4px 8px; }

/* ===== Footer ===== */
.site-footer {
  margin:40px auto 120px; background:var(--sea-deep);
  color:#fff; padding:28px 24px;
  text-align:center; font-size:.8rem; line-height:1.8;
}
.site-footer a { color:#fff; }
.footer-note { margin-top:12px; font-size:.75rem; }

/* ===== Responsive ===== */
@media (max-width:768px) {
  .events-grid { grid-template-columns:1fr; }
  .pref-filter-row { gap:5px; }
}
@media (prefers-reduced-motion:reduce) {
  .event-card,.pref-btn,.month-btn { transition:none; }
}