/* =========================
   THEME & BASICS
   ========================= */
:root{
  --bg-1: #071024;
  --bg-2: #09304a;
  --card-bg: rgba(255,255,255,0.04);
  --glass: rgba(255,255,255,0.06);
  --text: #e9f0fb;
  --muted: rgba(233,240,251,0.7);
  --accent: linear-gradient(90deg,#7c3aed,#06b6d4);
  --low: #2ecc71;
  --medium: #f6c84a;
  --high: #ff6b6b;
  --glass-blur: 8px;
  --radius: 12px;
  font-size: 16px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter,system-ui,Segoe UI,Arial;color:var(--text);background:linear-gradient(135deg,var(--bg-1),var(--bg-2));-webkit-font-smoothing:antialiased;}
.app-header{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;}
.brand h1{margin:0;font-size:20px;letter-spacing:0.6px}
.meta{display:inline-flex;gap:8px;margin-left:10px}
.status{display:flex;align-items:center;gap:12px}
.stars{background:linear-gradient(90deg,#fff2a8,#ffd9a8);color:#071024;padding:6px 10px;border-radius:999px;font-weight:700}

/* panels & layout */
.main{display:grid;grid-template-columns:320px 1fr 260px;gap:14px;padding:12px}
.panel{display:flex;flex-direction:column;gap:12px}
.card{background:var(--card-bg);backdrop-filter:blur(var(--glass-blur));border-radius:var(--radius);padding:12px;box-shadow:0 8px 30px rgba(2,6,23,0.6)}
.form-card .label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.form-card input, .form-card select{width:100%;padding:8px;border-radius:8px;border:none;background:rgba(255,255,255,0.02);color:var(--text);margin-bottom:8px}
.form-row{display:flex;gap:8px;align-items:center}
.btn{padding:8px 10px;border-radius:10px;border:1px solid rgba(255,255,255,0.06);background:transparent;color:var(--text);cursor:pointer}
.btn.primary{background:var(--accent);border:none;color:#021124;font-weight:700}
.btn.ghost{background:transparent;opacity:0.85}

/* board */
.board{display:flex;flex-direction:column;gap:12px}
.board-header{display:flex;justify-content:space-between;align-items:center}
.progress-label{font-size:13px;color:var(--muted)}
.progress-bar{width:260px;height:12px;background:rgba(255,255,255,0.03);border-radius:999px;overflow:hidden}
#progressFill{height:100%;width:0;background:linear-gradient(90deg,#7c3aed,#06b6d4);transition:width .6s ease}

/* columns */
.columns{display:flex;gap:12px;height:65vh}
.column{flex:1;display:flex;flex-direction:column;gap:10px;padding:12px;min-width:200px}
.column h3{margin:0 0 6px 0}
.list{display:flex;flex-direction:column;gap:10px;overflow:auto;padding-bottom:8px}

/* task card */
.task{display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:10px;background:linear-gradient(180deg,rgba(255,255,255,0.02),rgba(255,255,255,0.01));box-shadow:0 10px 24px rgba(0,0,0,0.45);transition:transform .18s ease,box-shadow .18s,opacity .2s;cursor:grab}
.task:active{cursor:grabbing}
.task:hover{transform:translateY(-6px)}
.task .left{margin-top:2px}
.chk-done{width:18px;height:18px}
.body{flex:1}
.title{font-weight:700}
.meta{font-size:12px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.category{background:rgba(255,255,255,0.03);padding:4px 8px;border-radius:6px;font-size:12px}
.tags{opacity:0.9}
.due{font-weight:600}
.right{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.prio{padding:6px 8px;border-radius:8px;font-size:12px}
.prio[data-p="low"]{background:rgba(46,204,113,0.12);color:var(--low)}
.prio[data-p="medium"]{background:rgba(246,200,74,0.10);color:var(--medium)}
.prio[data-p="high"]{background:rgba(255,107,107,0.08);color:var(--high)}
.actions{display:flex;gap:6px}
.btn.small{padding:6px 8px;font-size:13px}

/* dots legend */
.legend{display:flex;gap:8px;align-items:center}
.legend-item{display:flex;gap:6px;align-items:center;font-size:13px;color:var(--muted)}
.dot{width:10px;height:10px;border-radius:50%}
.dot.low{background:var(--low)}
.dot.medium{background:var(--medium)}
.dot.high{background:var(--high)}

/* due indicators */
.task.due-today{outline:2px solid rgba(124,58,237,0.12)}
.task.overdue{outline:2px solid rgba(255,107,107,0.12)}

/* badges */
.badges{display:flex;gap:8px}
.badge-chip{background:linear-gradient(90deg,#ffd54a,#ff7043);padding:6px 8px;border-radius:999px;color:#021124;font-weight:700}

/* confetti */
#confetti-root{position:fixed;left:0;top:0;right:0;bottom:0;pointer-events:none;overflow:visible}
.confetti{position:fixed;width:10px;height:14px;border-radius:2px;opacity:0;transform:translateY(-20px);animation:confetti 1200ms linear forwards}
@keyframes confetti{to{opacity:1;transform:translateY(400px) rotate(720deg);opacity:0}}

/* help panel */
.help{display:none}
.help[aria-hidden="false"]{display:block}

/* responsive */
@media (max-width:1000px){
  .main{grid-template-columns:1fr;grid-auto-rows:auto}
  .columns{flex-direction:column;height:60vh}
  .panel.right{display:none}
}

/* light theme (applied via body.light) */
body.light{
  --bg-1:#f7fbff;
  --bg-2:#eef6ff;
  --card-bg:rgba(3,10,18,0.03);
  --text:#071124;
  --muted:rgba(7,17,36,0.6);
}

/* small accessibility focus */
.task:focus{outline:3px solid rgba(124,58,237,0.18);outline-offset:2px}