:root{
  --a:#7c3aed;
  --b:#06b6d4;
  --c:#22c55e;

  --bg:#070a12;
  --card:rgba(255,255,255,.08);
  --border:rgba(255,255,255,.12);
  --text:#e7e9ee;
  --muted:#a7adbb;
}

/* RESET */
*{ box-sizing:border-box }
html,body{ margin:0; padding:0 }
body{
  min-height:100vh;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(124,58,237,.35), transparent),
              radial-gradient(900px 600px at 90% 10%, rgba(6,182,212,.35), transparent),
              linear-gradient(180deg, #05070d, #0b1020);
  overflow-x:hidden;
}

/* BACKGROUND BLOBS */
.bg{ position:fixed; inset:0; z-index:-1; pointer-events:none; }
.blob{
  position:absolute;
  width:420px; height:420px;
  filter: blur(80px);
  opacity:.45;
  border-radius:50%;
}
.b1{ background:var(--a); top:-120px; left:-120px; }
.b2{ background:var(--b); top:40%; right:-160px; }
.b3{ background:var(--c); bottom:-160px; left:30%; }

/* HEADER */
.top{ text-align:center; padding:36px 16px 12px; }
.top h1{ margin:0; font-size:34px; letter-spacing:-.02em; }
.top p{ margin:6px 0 0; color:var(--muted); }

/* META */
.meta{
  margin-top: 12px;
  display:flex;
  gap:10px;
  justify-content:center;
  flex-wrap:wrap;
}
.pill{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  color: var(--text);
  font-size: 13px;
}
.pill.dim{ color: var(--muted); background: rgba(0,0,0,.16); }

/* LAYOUT */
.stack{
  max-width: 980px;
  margin: 12px auto 60px;
  padding: 0 16px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* CARD */
.card{
  padding:18px;
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.02));
  border:1px solid var(--border);
  border-radius:22px;
  box-shadow:
    0 30px 80px rgba(0,0,0,.45),
    inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter: blur(14px);
}

/* FORM */
form{ display:flex; gap:10px; }
#habitInput{
  flex:1;
  padding:14px 16px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.35);
  color:var(--text);
  outline:none;
}
#habitInput::placeholder{ color:#8b91a3 }
form button{
  padding:14px 18px;
  border-radius:14px;
  border:none;
  cursor:pointer;
  font-weight:800;
  background: linear-gradient(135deg, var(--a), var(--b));
  color:white;
  transition: transform .15s ease, box-shadow .15s ease;
}
form button:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(124,58,237,.35);
}

/* PROGRESS */
.progress{ margin:16px 0 6px; }
#progressText{ font-size:13px; color:var(--muted); }
.bar{
  height:8px; margin-top:6px;
  background:rgba(255,255,255,.14);
  border-radius:999px;
  overflow:hidden;
}
#barFill{
  height:100%; width:0%;
  background: linear-gradient(90deg, var(--a), var(--b), var(--c));
  transition: width .35s ease;
}

/* LIST */
#list{
  list-style:none;
  padding:0;
  margin:14px 0 0;
  display:grid;
  gap:10px;
}
.item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 12px;
  border-radius:14px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.08);
  transition: background .15s ease, transform .12s ease, border-color .15s ease;
}
.item:hover{
  background:rgba(255,255,255,.14);
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.12);
}
.left{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  flex:1;
}
.label{
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.item.done .label{ text-decoration: line-through; opacity:.75; }
.item input[type="checkbox"]{ width:18px; height:18px; accent-color:#22c55e; }

.actions{ display:flex; align-items:center; gap:8px; }

/* ICON BUTTON */
.iconbtn{
  width:36px;
  height:36px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.22);
  color: rgba(255,255,255,.92);
  cursor:pointer;
  display:grid;
  place-items:center;
  transition: transform .12s ease, background .15s ease, border-color .15s ease;
}
.iconbtn:hover{
  transform: translateY(-1px);
  background: rgba(0,0,0,.30);
  border-color: rgba(255,255,255,.18);
}
.iconbtn.danger{ border-color: rgba(244,63,94,.35); }
.iconbtn.danger:hover{ background: rgba(244,63,94,.18); }

/* EDIT MODE */
.editwrap{ display:flex; gap:8px; width:100%; }
.editInput{
  flex:1;
  padding:12px 12px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.30);
  color: var(--text);
  outline:none;
}

.hint{
  margin-top:10px;
  font-size:12px;
  color: var(--muted);
  text-align:center;
  opacity:.9;
}

/* DRAG HANDLE */
.drag-handle{
  width:36px;
  height:36px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.18);
  color: rgba(255,255,255,.8);
  display:grid;
  place-items:center;
  cursor: grab;
  user-select:none;
  transition: transform .12s ease, background .15s ease, border-color .15s ease;
}
.drag-handle:hover{
  transform: translateY(-1px);
  background: rgba(0,0,0,.28);
  border-color: rgba(255,255,255,.18);
}
.item:active .drag-handle{ cursor: grabbing; }
.item.dragging{ opacity:.55; transform: scale(.99); }
.item.drag-over{ outline: 2px dashed rgba(255,255,255,.22); outline-offset: 4px; }

/* ===== CALENDAR ===== */
.calendar h3{ margin:0; font-size:18px; }
.muted{ color: var(--muted); }

.cal-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
  margin-bottom: 10px;
}
.cal-title p{ margin:6px 0 0; font-size:13px; }

.dow{
  display:grid;
  grid-template-columns: repeat(7, 1fr);
  gap:8px;
  font-size:12px;
  color: var(--muted);
  text-transform: lowercase;
  margin: 10px 0 8px;
}
.dow span{ text-align:center; }

.cal-grid{
  display:grid;
  grid-template-columns: repeat(7, 1fr);
  gap:8px;
}

.day{
  height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(0,0,0,.22);
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding:6px;
  cursor:pointer;
  transition: transform .12s ease, border-color .15s ease, background .15s ease;
  position:relative;
  user-select:none;
}
.day:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.16);
}
.day .n{
  font-size: 12px;
  color: rgba(255,255,255,.85);
}

/* intensity levels */
.day.lv0{ background: rgba(0,0,0,.22); }
.day.lv1{ background: rgba(124,58,237,.22); border-color: rgba(124,58,237,.25); }
.day.lv2{ background: rgba(6,182,212,.22); border-color: rgba(6,182,212,.25); }
.day.lv3{ background: rgba(34,197,94,.28); border-color: rgba(34,197,94,.30); }

.day.off{
  opacity:.35;
  cursor: default;
}
.day.today{
  box-shadow: 0 0 0 2px rgba(255,255,255,.16) inset;
}

.cal-legend{
  margin-top: 12px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:12px;
}
.lg{
  width:18px; height:18px;
  border-radius: 7px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.22);
}
.lg.b0{ background: rgba(0,0,0,.22); }
.lg.b1{ background: rgba(124,58,237,.22); }
.lg.b2{ background: rgba(6,182,212,.22); }
.lg.b3{ background: rgba(34,197,94,.28); }

.cal-detail{
  margin-top: 12px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  font-size: 13px;
  min-height: 44px;
}

/* responsive */
@media (max-width: 920px){
  .stack{ grid-template-columns: 1fr; }
}
@media (max-width:520px){
  .top h1{ font-size:30px }
}
/* ===== YEAR HEATMAP ===== */
.year-grid{
  margin-top: 10px;
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding-bottom: 6px;
}

/* each week column */
.wcol{
  display:grid;
  grid-template-rows: repeat(7, 14px);
  gap:6px;
}

/* each day cell */
.hday{
  width:14px;
  height:14px;
  border-radius: 5px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.22);
  cursor:pointer;
  transition: transform .12s ease, border-color .15s ease, background .15s ease, opacity .15s ease;
}
.hday:hover{
  transform: translateY(-1px) scale(1.05);
  border-color: rgba(255,255,255,.18);
}

/* intensity levels (reuse lv0..lv3 idea) */
.hday.lv0{ background: rgba(0,0,0,.22); }
.hday.lv1{ background: rgba(124,58,237,.22); border-color: rgba(124,58,237,.22); }
.hday.lv2{ background: rgba(6,182,212,.22); border-color: rgba(6,182,212,.22); }
.hday.lv3{ background: rgba(34,197,94,.28); border-color: rgba(34,197,94,.26); }

.hday.off{
  opacity:.25;
  cursor: default;
}
.hday.future{
  opacity:.25;
}
.hday.today{
  box-shadow: 0 0 0 2px rgba(255,255,255,.18) inset;
}

/* ===== CUSTOM TOOLTIP ===== */
.tip{
  position: fixed;
  z-index: 9999;
  min-width: 180px;
  max-width: 240px;
  padding: 10px 10px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(5,8,16,.82);
  box-shadow: 0 20px 60px rgba(0,0,0,.55);
  backdrop-filter: blur(12px);

  color: rgba(255,255,255,.92);
  font-size: 12px;
  line-height: 1.25;

  opacity: 0;
  transform: translateY(6px) scale(.98);
  pointer-events: none;
  transition: opacity .12s ease, transform .12s ease;
}

.tip.show{
  opacity: 1;
  transform: translateY(0) scale(1);
}

.tip .t-title{
  font-weight: 800;
  letter-spacing: -.01em;
}

.tip .t-sub{
  color: rgba(255,255,255,.72);
  margin-top: 4px;
}

.tip .t-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top: 8px;
  color: rgba(255,255,255,.78);
}

.tip .t-badge{
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.92);
  font-weight: 800;
}
/* ===== EMPTY STATE (Duolingo-ish) ===== */
.empty{
  list-style:none;
  padding:0;
  margin: 6px 0 0;
}

.empty-card{
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,.12);
  background:
    radial-gradient(500px 200px at 0% 0%, rgba(124,58,237,.20), transparent 60%),
    radial-gradient(420px 200px at 100% 0%, rgba(6,182,212,.16), transparent 55%),
    rgba(0,0,0,.18);
  box-shadow:
    0 18px 60px rgba(0,0,0,.35),
    inset 0 1px 0 rgba(255,255,255,.05);
}

.mascot{
  width: 64px;
  height: 64px;
  border-radius: 20px;
  display:grid;
  place-items:center;
  font-size: 34px;
  margin: 2px 0 10px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(135deg, rgba(124,58,237,.35), rgba(6,182,212,.22));
  box-shadow: 0 18px 50px rgba(124,58,237,.20);
  transform-origin: 50% 70%;
  animation: mascotFloat 2.8s ease-in-out infinite;
}

@keyframes mascotFloat{
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50%      { transform: translateY(-6px) rotate(2deg); }
}

.empty-text{
  margin-top: 6px;
}

.empty-title{
  font-weight: 900;
  letter-spacing: -.02em;
  font-size: 16px;
}

.empty-sub{
  margin-top: 4px;
  color: rgba(255,255,255,.72);
  font-size: 13px;
}

.empty-actions{
  margin-top: 12px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.chip{
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.92);
  padding: 9px 12px;
  border-radius: 999px;
  cursor:pointer;
  font-weight: 800;
  font-size: 12px;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
}

.chip:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.20);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}

.empty-footer{
  margin-top: 12px;
  font-size: 12px;
  color: rgba(255,255,255,.62);
}
/* ===== MASCOT BAR (always visible) ===== */
.mascotbar{
  display:flex;
  align-items:center;
  gap:12px;
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.12);
  background:
    radial-gradient(420px 120px at 0% 0%, rgba(124,58,237,.18), transparent 60%),
    radial-gradient(420px 120px at 100% 0%, rgba(6,182,212,.14), transparent 55%),
    rgba(0,0,0,.16);
  box-shadow:
    0 16px 50px rgba(0,0,0,.28),
    inset 0 1px 0 rgba(255,255,255,.05);
  margin-bottom: 12px;
}

.mascot.mini{
  width: 48px;
  height: 48px;
  border-radius: 16px;
  font-size: 24px;
  margin: 0;
  animation: mascotFloatMini 2.6s ease-in-out infinite;
}

@keyframes mascotFloatMini{
  0%, 100% { transform: translateY(0) rotate(-1.5deg); }
  50%      { transform: translateY(-4px) rotate(1.5deg); }
}

.mascotinfo{
  min-width: 0;
  flex: 1;
}

.m-title{
  font-weight: 900;
  letter-spacing: -.02em;
  font-size: 14px;
  line-height: 1.1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.m-sub{
  margin-top: 4px;
  font-size: 12px;
  color: rgba(255,255,255,.70);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}