:root{
  --bg:#0b1220;
  --bg2:#151e3e;
  --panel:rgba(17,24,50,.82);
  --line:rgba(255,255,255,.10);
  --text:#eef2ff;
  --muted:#b8c2e4;
  --mint:#87f0da;
  --blue:#7ea2ff;
  --blue2:#9ec6ff;
  --pink:#ff9bd0;
  --danger:#ff9db4;
  --shadow:0 24px 60px rgba(0,0,0,.28);
  --input:rgba(255,255,255,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  min-height:100vh;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP","Yu Gothic",sans-serif;
  background:
    radial-gradient(circle at top, rgba(126,162,255,.16), transparent 32%),
    linear-gradient(180deg, var(--bg2), var(--bg));
}
button,input,select,textarea{font:inherit}
a{color:inherit;text-decoration:none}

.page-shell{width:min(1280px, calc(100% - 24px));margin:18px auto 28px}
.panel{
  border:1px solid var(--line);
  border-radius:26px;
  background:linear-gradient(180deg, rgba(20,29,60,.84), rgba(12,18,42,.88));
  box-shadow:var(--shadow);
}
.hero{
  padding:18px 20px;
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:18px;
  margin-bottom:16px;
}
.eyebrow,.section-kicker{
  margin:0;
  color:var(--mint);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
}
.hero h1{margin:6px 0 0;font-size:clamp(28px,3.8vw,44px);line-height:1.15}
.hero-sub{margin:10px 0 0;color:var(--muted);line-height:1.75}
.hero-links{
  margin-top:10px;
  display:flex;
  gap:8px;
  flex-wrap:wrap;
}
.hero-links a,.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:32px;
  padding:0 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  font-size:12px;
  color:var(--muted);
}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.nav-btn,.action-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 16px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  transition:transform .16s ease, background .16s ease, border-color .16s ease, opacity .16s ease;
}
.nav-btn:hover,.action-btn:hover{transform:translateY(-1px)}
.action-btn.primary{background:linear-gradient(135deg, rgba(126,162,255,.84), rgba(158,198,255,.84))}
.action-btn.accent{background:linear-gradient(135deg, rgba(255,155,208,.26), rgba(126,162,255,.24))}
.action-btn.danger{background:rgba(255,107,107,.14);border-color:rgba(255,107,107,.35)}
.action-btn:disabled{opacity:.48;cursor:not-allowed;transform:none!important}

.layout-grid{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(340px,.88fr);
  gap:16px;
}
.side-stack{display:grid;gap:16px;align-content:start}
.setup-panel,.draw-panel,.result-panel,.share-panel,.info-panel{padding:18px}
.panel-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
  margin-bottom:14px;
}
.panel-head.compact{margin-bottom:12px}
.panel-head h2{margin:4px 0 0;font-size:clamp(24px,3vw,34px)}
.panel-head h3{margin:4px 0 0;font-size:22px}
.panel-badges{display:flex;gap:8px;flex-wrap:wrap}

.inline-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.mini-note{
  margin:0;
  color:var(--muted);
  font-size:12px;
  line-height:1.7;
}
.divider{height:1px;background:var(--line);margin:16px 0}
.field-stack{display:grid;gap:12px}
.field{
  display:grid;
  gap:6px;
  min-width:0;
}
.field > span,label{
  color:var(--muted);
  font-size:12px;
  font-weight:700;
}
input[type="text"], input[type="number"], select, textarea{
  width:100%;
  min-height:46px;
  border-radius:16px;
  border:1px solid var(--line);
  background:var(--input);
  color:var(--text);
  padding:0 14px;
  outline:none;
}
textarea{
  min-height:120px;
  padding:12px 14px;
  resize:vertical;
}
select option{background:#10182f;color:var(--text)}
.small-err{
  min-height:1.2em;
  color:#ff8e9b;
  font-size:11px;
  font-style:normal;
}

.items-list{
  display:grid;
  gap:10px;
  margin-top:12px;
}
.item-card{
  display:grid;
  grid-template-columns:110px 1fr 60px;
  gap:10px;
  align-items:center;
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(255,255,255,.04);
  padding:10px;
  min-width:0;
}
.item-card.rarity-UR{border-left:6px solid rgba(255,215,0,.85)}
.item-card.rarity-HR{border-left:6px solid rgba(255,140,0,.85)}
.item-card.rarity-SR{border-left:6px solid rgba(170,120,255,.85)}
.item-card.rarity-RRR{border-left:6px solid rgba(70,200,255,.85)}
.item-card.rarity-RR{border-left:6px solid rgba(90,220,140,.85)}
.item-card.rarity-R{border-left:6px solid rgba(190,205,255,.65)}
.item-card.rarity-UC{border-left:6px solid rgba(160,160,160,.75)}
.item-card.rarity-C{border-left:6px solid rgba(120,120,120,.65)}
.item-delete{
  min-height:44px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
}

.rates-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:10px;
}
.rates-grid .field input{min-height:44px}

.draw-actions{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}

.result-list{
  display:grid;
  gap:8px;
}
.result-pill{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  width:100%;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(255,255,255,.05);
  padding:10px 12px;
}
.result-rarity{
  min-width:48px;
  font-weight:900;
}
.result-text{
  flex:1 1 auto;
  min-width:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.mono{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

.share-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
.share-box-wrap{
  display:grid;
  gap:6px;
}
.meta-line{
  color:var(--muted);
  font-size:12px;
}
.info-list{
  display:grid;
  gap:10px;
}
.info-item{
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(255,255,255,.04);
  padding:12px 14px;
  color:var(--muted);
  font-size:12px;
  line-height:1.7;
}

@media (max-width: 1040px){
  .layout-grid{grid-template-columns:1fr}
}
@media (max-width: 760px){
  .hero{flex-direction:column}
  .hero-actions{
    width:100%;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px;
  }
  .hero-actions .nav-btn:last-child{grid-column:span 2}
  .rates-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .draw-actions{grid-template-columns:1fr}
  .item-card{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .page-shell{width:min(100%, calc(100% - 12px));margin-top:10px}
  .setup-panel,.draw-panel,.result-panel,.share-panel,.info-panel,.hero{padding:14px}
  .inline-actions,.panel-badges{display:grid;grid-template-columns:1fr}
}


.setup-panel .inline-actions.after-rates{
  margin-top: 14px;
}


/* basic gacha update v4: rate tune / gift point helper */
.rate-tune-box{
  margin-top:14px;
  border:1px solid var(--line);
  border-radius:20px;
  background:rgba(255,255,255,.045);
  padding:12px;
}
.rate-tune-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:10px;
}
.rate-tune-head strong{font-size:14px}
.rate-status{
  color:var(--muted);
  font-size:12px;
  font-style:normal;
  text-align:right;
}
.rate-tune-actions{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.rate-tune-actions .action-btn{
  min-height:46px;
  justify-content:center;
  font-size:14px;
  font-weight:900;
  letter-spacing:.04em;
  padding:10px 12px;
}
.action-btn.tune-hard{background:linear-gradient(135deg, rgba(255,107,107,.16), rgba(255,155,208,.12));border-color:rgba(255,107,107,.35)}
.action-btn.tune-base{background:rgba(255,255,255,.06)}
.action-btn.tune-easy{background:linear-gradient(135deg, rgba(135,240,218,.18), rgba(126,162,255,.16));border-color:rgba(135,240,218,.35)}
.gift-calc-box{
  display:grid;
  gap:8px;
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(255,255,255,.045);
  padding:12px;
}
.gift-calc-box span{
  color:var(--muted);
  font-size:12px;
  line-height:1.6;
}
.gift-calc-box strong{
  font-size:18px;
}
.mini-btn{
  min-height:38px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.07);
  color:var(--text);
  cursor:pointer;
}
.mini-btn:disabled{opacity:.45;cursor:not-allowed}
.share-grid-x-only{grid-template-columns:1fr}
@media (max-width: 760px){
  .rate-tune-actions{grid-template-columns:1fr}
}