:root{
  --paper:#111214;
  --card:#1B1C1F;
  --card-hover:#212226;
  --ink:#EDEDEC;
  --ink-soft:#8A8B8F;
  --line:#2B2C30;
  --line-strong:#3A3B40;
  --gold:#C9A24B;
  --shori:#9AA7B8;
  --shori-bg:#22262B;
  --anken:#C9A24B;
  --anken-bg:#2A2519;
  --shinko:#7FAE9B;
  --shinko-bg:#1C2622;
  --hanko:#C9A24B;
  --hanko-dark:#8C7532;
}
*{box-sizing:border-box;}
body{
  margin:0;
  min-height:100vh;
  background:var(--paper);
  font-family:'Zen Kaku Gothic New', sans-serif;
  color:var(--ink);
  padding-bottom:120px;
}
header{
  padding:36px 24px 18px;
  text-align:center;
}
header h1{
  font-family:'Shippori Mincho B1', serif;
  font-weight:800;
  font-size:28px;
  letter-spacing:.06em;
  margin:0 0 6px;
  color:var(--ink);
}
header p{
  margin:0;
  font-size:13px;
  color:var(--ink-soft);
  letter-spacing:.04em;
}
.board{
  display:flex;
  gap:18px;
  max-width:1100px;
  margin:0 auto;
  padding:8px 20px 0;
  align-items:flex-start;
}
.column{
  flex:1 1 0;
  min-width:0;
  background:#161719;
  border:0.5px solid var(--line);
  border-radius:14px;
  padding:14px;
  display:flex;
  flex-direction:column;
  min-height:420px;
}
.column.drag-over{
  background:#1D1E21;
  border-color:var(--col-accent, var(--line-strong));
}
.col-head{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
  padding-bottom:10px;
  border-bottom:2px solid var(--col-accent, var(--line));
}
.col-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--col-accent);
  flex-shrink:0;
}
.col-name{
  font-family:'Shippori Mincho B1', serif;
  font-weight:700;
  font-size:17px;
  letter-spacing:.05em;
}
.col-count{
  margin-left:auto;
  font-size:12px;
  color:var(--ink-soft);
  background:var(--col-bg, var(--line));
  padding:2px 9px;
  border-radius:20px;
}
.col-shori{--col-accent:var(--shori);--col-bg:var(--shori-bg);}
.col-anken{--col-accent:var(--anken);--col-bg:var(--anken-bg);}
.col-shinko{--col-accent:var(--shinko);--col-bg:var(--shinko-bg);}

.cards{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:9px;
  min-height:60px;
}
.card{
  background:var(--card);
  border:0.5px solid var(--line-strong);
  border-left:3px solid var(--col-accent);
  border-radius:8px;
  padding:11px 12px;
  font-size:14px;
  line-height:1.5;
  cursor:grab;
  touch-action:none;
  user-select:none;
  position:relative;
  box-shadow:0 1px 3px rgba(0,0,0,0.35);
  color:var(--ink);
}
.card:hover{background:var(--card-hover);}
.card.placeholder{
  opacity:0.35;
  border-style:dashed;
}
.card .del-x{
  position:absolute;
  top:6px; right:8px;
  font-size:12px;
  color:var(--ink-soft);
  opacity:0;
  cursor:pointer;
  line-height:1;
  padding:2px;
}
.card:hover .del-x{opacity:0.6;}
.card .del-x:hover{opacity:1;color:var(--hanko);}

.due-row{
  display:flex;
  align-items:center;
  gap:6px;
  margin-top:8px;
  font-size:11px;
  letter-spacing:.03em;
}
.due-dot{
  width:6px;height:6px;border-radius:50%;
  flex-shrink:0;
}
.due-normal{color:var(--ink-soft);}
.due-normal .due-dot{background:var(--line-strong);}
.due-soon{color:var(--gold); font-weight:500;}
.due-soon .due-dot{background:var(--gold); box-shadow:0 0 0 0 rgba(201,162,75,0.6); animation:pulseDot 1.6s infinite;}
.due-over{color:#D97B72; font-weight:500;}
.due-over .due-dot{background:#D97B72;}
@keyframes pulseDot{
  0%{box-shadow:0 0 0 0 rgba(201,162,75,0.55);}
  70%{box-shadow:0 0 0 6px rgba(201,162,75,0);}
  100%{box-shadow:0 0 0 0 rgba(201,162,75,0);}
}

.due-input{
  width:130px;
  flex:0 0 auto;
}

.add-row{
  display:flex;
  gap:6px;
  margin-top:10px;
}
.add-row input{
  flex:1;
  min-width:0;
  font-family:inherit;
  font-size:13px;
  padding:8px 10px;
  border:0.5px solid var(--line-strong);
  border-radius:7px;
  background:#0E0F11;
  color:var(--ink);
}
.add-row input::placeholder{color:var(--ink-soft);}
.add-row input:focus{
  outline:2px solid var(--col-accent);
  outline-offset:1px;
}
.add-row button{
  font-family:inherit;
  font-size:13px;
  font-weight:500;
  padding:8px 12px;
  border-radius:7px;
  border:0.5px solid var(--col-accent);
  background:var(--col-bg);
  color:var(--col-accent);
  cursor:pointer;
}
.add-row button:hover{filter:brightness(1.15);}

.dragging-ghost{
  position:fixed;
  pointer-events:none;
  z-index:999;
  transform:translate(-50%,-50%) rotate(-2deg);
  opacity:0.95;
  box-shadow:0 8px 20px rgba(38,51,58,0.22);
  width:220px;
}

.delete-zone{
  position:fixed;
  left:50%;
  bottom:22px;
  transform:translateX(-50%);
  width:190px;
  height:78px;
  border-radius:50%/38%;
  border:1.5px dashed var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:2px;
  background:rgba(201,162,75,0.04);
  color:var(--hanko);
  font-family:'Shippori Mincho B1', serif;
  font-weight:700;
  letter-spacing:.1em;
  transition:transform .15s ease, background .15s ease, border-color .15s ease;
  z-index:50;
}
.delete-zone .sub{
  font-family:'Zen Kaku Gothic New', sans-serif;
  font-weight:400;
  font-size:10px;
  letter-spacing:.05em;
  color:var(--ink-soft);
}
.delete-zone.armed{
  transform:translateX(-50%) scale(1.08);
  background:rgba(201,162,75,0.12);
  border-style:solid;
  border-color:var(--hanko);
}

.stamp{
  position:fixed;
  pointer-events:none;
  z-index:1000;
  font-family:'Shippori Mincho B1', serif;
  font-weight:800;
  font-size:34px;
  color:var(--hanko);
  border:4px solid var(--hanko);
  border-radius:10px;
  padding:2px 10px;
  transform:translate(-50%,-50%) rotate(-14deg) scale(1.6);
  opacity:0;
  animation: stampIn .45s ease-out forwards;
}
@keyframes stampIn{
  0%{opacity:0; transform:translate(-50%,-50%) rotate(-14deg) scale(2.4);}
  55%{opacity:0.95; transform:translate(-50%,-50%) rotate(-14deg) scale(0.92);}
  75%{opacity:0.95; transform:translate(-50%,-50%) rotate(-14deg) scale(1.05);}
  100%{opacity:0; transform:translate(-50%,-50%) rotate(-14deg) scale(1.05);}
}

.empty-hint{
  font-size:12px;
  color:var(--ink-soft);
  text-align:center;
  padding:14px 4px;
  border:1px dashed var(--line);
  border-radius:8px;
}

@media (max-width:720px){
  .board{flex-direction:column;}
  .column{min-height:unset;}
}