:root{
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --accent:#2563eb;      /* blue */
  --accent2:#0ea5e9;     /* sky */
  --line:#e5e7eb;
  --danger:#ef4444;
  --shadow: 0 10px 30px rgba(2,6,23,.08);
  --shadow2: 0 6px 16px rgba(2,6,23,.06);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,'Hiragino Sans','Noto Sans JP',sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, rgba(37,99,235,.10), transparent 60%),
              radial-gradient(900px 500px at 90% 20%, rgba(14,165,233,.10), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:inherit}
.container{max-width:1160px;margin:0 auto;padding:22px}

.nav{
  display:flex;gap:14px;align-items:center;justify-content:space-between;
  margin-bottom:16px;
}
.brand a{font-weight:800;letter-spacing:.2px;text-decoration:none}
.navlinks{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 12px;border:1px solid var(--line);border-radius:14px;
  background:rgba(255,255,255,.75);
  backdrop-filter:saturate(130%) blur(6px);
  text-decoration:none;
  box-shadow: 0 1px 0 rgba(2,6,23,.02);
  transition: transform .06s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
  cursor:pointer;
}
.btn:hover{
  border-color: rgba(37,99,235,.35);
  box-shadow: var(--shadow2);
}
.btn:active{transform: translateY(1px)}
.btn.primary{
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color:#fff;
  border-color: transparent;
  font-weight:800;
  box-shadow: 0 12px 22px rgba(37,99,235,.18);
}
.btn.primary:hover{box-shadow: 0 14px 26px rgba(37,99,235,.22)}
.btn.danger{border-color: rgba(239,68,68,.35); color: var(--danger);}

.card{
  background: var(--card);
  border: 1px solid rgba(229,231,235,.9);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:900px){.grid.two{grid-template-columns:1.2fr .8fr}}

h1{font-size:28px;letter-spacing:-.02em;margin:0 0 10px}
h2{font-size:18px;letter-spacing:-.01em;margin:0 0 10px}
h3{font-size:16px;margin:0 0 10px}

small,.muted{color:var(--muted)}
input,select,textarea{
  width:100%;
  background:#fff;
  border:1px solid var(--line);
  color:var(--text);
  padding:10px 12px;
  border-radius:14px;
  outline:none;
  transition:border-color .18s ease, box-shadow .18s ease;
}
input:focus,select:focus,textarea:focus{
  border-color: rgba(37,99,235,.45);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
textarea{min-height:120px;resize:vertical}
.row{display:grid;gap:10px}
@media(min-width:760px){.row.two{grid-template-columns:1fr 1fr}}

.table{width:100%;border-collapse:separate;border-spacing:0}
.table th,.table td{
  padding:10px 10px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.table th{
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color: var(--muted);
}
.table tr:last-child td{border-bottom:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:12px;
  color:var(--muted);
  background: rgba(255,255,255,.7);
}
.badge.ok{border-color: rgba(37,99,235,.25); color: var(--accent)}
.badge.ng{border-color: rgba(239,68,68,.25); color: var(--danger)}

.split{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
hr{border:none;border-top:1px solid var(--line);margin:12px 0}

.flash{
  padding:10px 12px;border-radius:14px;
  border:1px solid var(--line);margin:0 0 12px;
  background: rgba(255,255,255,.8);
  box-shadow: var(--shadow2);
}
.flash.ok{border-color: rgba(37,99,235,.25)}
.flash.err{border-color: rgba(239,68,68,.25)}

.footer{margin-top:20px;color:var(--muted);font-size:12px}

/* calendar tweaks */
.table td a.btn{background:rgba(255,255,255,.85)}


/* mini button (calendar "+") */
.btn.mini{
  width:34px;
  height:34px;
  padding:0;
  border-radius:999px;
  font-weight:900;
  line-height:1;
}

/* Mobile adjustments */
@media (max-width: 720px){
  .container{padding:14px}
  h1{font-size:22px}
  .card{padding:14px;border-radius:16px}
  .nav{gap:10px;align-items:flex-start}
  .navlinks{gap:8px}
  .btn{padding:8px 10px;border-radius:14px}
  .table th,.table td{padding:8px 8px}
  .table{font-size:13px}
  table.table[style*="table-layout:fixed"] td{height:74px}
  table.table[style*="table-layout:fixed"] td .muted{font-size:11px}
}

/* Extra small phones */
@media (max-width: 420px){
  .navlinks .btn{padding:7px 9px}
  table.table[style*="table-layout:fixed"] td{height:66px}
  .btn.mini{width:32px;height:32px}
}


/* Calendar: desktop grid vs mobile list */
.calendar-mobile{display:none}
.daycard{margin-top:10px}
@media (max-width: 720px){
  .calendar-desktop{display:none}
  .calendar-mobile{display:block}
  .daycard{padding:14px}
}


/* Clickable date items */
.daylink, .daycard-link{
  display:block;
  text-decoration:none;
  color:inherit;
}
.daylink:hover, .daycard-link:hover{
  filter: brightness(0.98);
}
.daycard-link{
  padding:0;
}

/* Chat readability */
.chat-body{
  font-size:15px;
  line-height:1.6;
  letter-spacing:.01em;
}
.chat-meta{
  margin-top:8px;
  font-size:12px;
  color: rgba(100,116,139,.85); /* muted */
}
.chat-actions .btn{
  padding:7px 10px;
  border-radius:14px;
  font-size:13px;
}


/* Poll (LINE風アンケート) */
.poll{
  border:1px solid rgba(229,231,235,.9);
  border-radius:18px;
  padding:14px;
  background: rgba(255,255,255,.85);
  box-shadow: 0 6px 16px rgba(2,6,23,.04);
}
.poll-q{
  font-weight:900;
  font-size:16px;
  letter-spacing:-.01em;
}
.poll-meta{
  margin-top:6px;
  font-size:12px;
  color: rgba(100,116,139,.85);
}
.poll-opt{
  display:block;
  padding:10px 12px;
  border:1px solid rgba(229,231,235,.9);
  border-radius:14px;
  background:#fff;
}
.poll-opt:hover{border-color: rgba(37,99,235,.25)}
.poll-bar{
  height:8px;
  border-radius:999px;
  background: rgba(100,116,139,.15);
  margin-top:8px;
  overflow:hidden;
}
.poll-bar-fill{
  height:100%;
  background: linear-gradient(135deg, rgba(37,99,235,.85), rgba(14,165,233,.85));
  border-radius:999px;
}
.poll-count{
  margin-top:6px;
  font-size:12px;
}
@media (max-width: 720px){
  .poll{padding:12px;border-radius:16px}
  .poll-q{font-size:15px}
}


/* Poll layout tweak: text left, checkbox right (narrow column) */
.poll-row{
  display:flex;
  gap:12px;
  align-items:flex-start;
  justify-content:space-between;
}
.poll-left{flex:1; min-width:0}
.poll-right{
  width:44px;
  display:flex;
  justify-content:center;
  padding-top:2px;
}
.poll-check{
  width:18px;
  height:18px;
}
@media (max-width: 720px){
  .poll-right{width:40px}
  .poll-check{width:18px;height:18px}
}