:root{
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --ink:#16171A;
  --ink-soft:#8A8D94;
  --accent:#1F6F66;
  --accent-on:#F0FBF9;
  --accent-tint:#EDF6F4;
  --border:#E5E7EB;
  --warn:#B08900;
  --danger:#B3261E;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',-apple-system,'Noto Sans TC',sans-serif;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}

#app{
  max-width:480px;
  margin:0 auto;
  min-height:100vh;
  min-height:100dvh;
  background:var(--surface);
  display:flex;
  flex-direction:column;
  position:relative;
}

.view{display:none;flex:1;padding:calc(env(safe-area-inset-top) + 18px) 18px 12px;}
.view.active{display:flex;flex-direction:column;}

/* ---- topbar ---- */
.topbar{
  display:flex;
  justify-content:center;
  align-items:baseline;
  margin-bottom:14px;
  position:relative;
  min-height:22px;
}
.topbar.left{justify-content:flex-start;}
.brand{
  font-family:'Newsreader',serif;
  font-weight:500;
  font-size:19px;
  color:var(--ink);
}
.back-chip{
  font-family:'JetBrains Mono',monospace;
  font-size:12px;
  color:var(--accent);
  font-weight:700;
  background:none;
  border:none;
  padding:0;
  cursor:pointer;
}
.back-chip:active{opacity:0.6;}
.topbar-right{position:absolute;right:0;top:0;}
.icon-btn{
  background:none;border:none;padding:4px;cursor:pointer;
  color:var(--ink-soft);
  font-family:'JetBrains Mono',monospace;font-size:12px;
}

/* ---- daily habits ---- */
.habit-box{
  background:#FBFBFC;
  border:1px solid var(--border);
  padding:9px 12px 12px;
  margin-bottom:12px;
}
.habit-box-label{
  font-family:'JetBrains Mono',monospace;
  font-size:9.5px;
  letter-spacing:0.03em;
  color:var(--ink-soft);
  margin:0 0 8px;
}
.habit-list{display:flex;flex-direction:column;gap:9px;}
.habit-item{
  display:flex;align-items:center;gap:9px;
  background:none;border:none;padding:0;width:100%;text-align:left;cursor:pointer;
  font-family:inherit;
}
.h-check{width:14px;height:14px;border:1.5px solid #C7CAD1;flex-shrink:0;position:relative;}
.habit-item.done .h-check{background:var(--accent);border-color:var(--accent);}
.habit-item.done .h-check::after{
  content:'';position:absolute;left:3px;top:0px;width:4px;height:8px;
  border:solid #fff;border-width:0 1.5px 1.5px 0;transform:rotate(45deg);
}
.h-txt{font-size:13px;color:var(--ink);}
.habit-item.done .h-txt{color:var(--ink-soft);text-decoration:line-through;text-decoration-color:var(--accent);}

/* ---- quick add ---- */
.quick-add{
  display:flex;align-items:center;gap:8px;
  background:#F4F5F7;border:1px solid var(--border);
  padding:12px 14px;margin-bottom:6px;cursor:text;
}
.quick-add input{
  flex:1;border:none;background:none;outline:none;
  font-family:'Inter',sans-serif;font-size:14px;color:var(--ink);
  min-width:0;
}
.quick-add input::placeholder{color:#B7BAC1;}
.suggest-chip{
  flex-shrink:0;font-size:11px;font-weight:600;
  padding:4px 10px;border-radius:999px;
  background:var(--accent);color:var(--accent-on);
  white-space:nowrap;
}
.quick-add-hint{
  font-family:'JetBrains Mono',monospace;font-size:9.5px;color:#B7BAC1;
  margin:0 0 14px;
}

/* ---- cta row ---- */
.cta-row{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--accent-tint);border:1px solid #CFE7E3;
  padding:11px 14px;margin-bottom:14px;
  background:none;width:100%;border:1px solid #CFE7E3;cursor:pointer;font-family:inherit;
}
.cta-row{background:var(--accent-tint);}
.cta-label{font-size:13px;color:#155F57;font-weight:600;}
.cta-btn{font-size:12px;font-weight:700;background:var(--accent);color:var(--accent-on);padding:6px 12px;white-space:nowrap;}

/* ---- quadrant grid ---- */
.quad-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:14px;}
.quad-box{
  background:#FBFBFC;border:1px solid var(--border);
  padding:11px;min-height:104px;position:relative;padding-bottom:28px;
  text-align:left;font-family:inherit;cursor:pointer;
}
.quad-label{
  font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:0.03em;
  color:var(--ink-soft);margin-bottom:8px;
  display:flex;align-items:center;justify-content:space-between;
}
.task-row{display:flex;align-items:flex-start;gap:6px;margin-bottom:6px;font-size:12px;line-height:1.4;
  -webkit-touch-callout:none;-webkit-user-select:none;user-select:none;}
.task-row .mark{font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--ink-soft);flex-shrink:0;width:12px;}
.mark-hit{
  display:inline-flex;align-items:center;
  background:none;border:none;padding:2px 8px 2px 0;margin:-2px 0 -2px -2px;cursor:pointer;
  -webkit-touch-callout:none;-webkit-appearance:none;appearance:none;flex-shrink:0;
}
.task-row.done .mark{color:var(--accent);}
.task-row.done .txt{color:var(--ink-soft);text-decoration:line-through;text-decoration-color:var(--accent);}
.task-row.deferred .mark{color:var(--warn);}
.task-row .txt{color:var(--ink);flex:1;min-width:0;}
.task-add-btn{
  flex-shrink:0;font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;
  background:var(--accent-tint);color:var(--accent);border:1px solid #CFE7E3;
  padding:3px 8px;cursor:pointer;
}
.task-in-focus{flex-shrink:0;font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--ink-soft);}
.quad-more{position:absolute;right:10px;bottom:8px;font-family:'JetBrains Mono',monospace;font-size:9.5px;color:var(--accent);font-weight:600;}

/* ---- quadrant detail / day detail lists ---- */
.detail-title{font-family:'Manrope',sans-serif;font-weight:800;font-size:17px;margin:4px 0 14px;}
.task-list{display:flex;flex-direction:column;}
.task-list .task-row{
  padding:10px 2px;border-bottom:1px solid var(--border);
  margin-bottom:0;transition:background .15s;
}
.task-list .task-row:last-child{border-bottom:none;}
.task-list .task-row.pressing{background:var(--accent-tint);}
.empty-hint{font-size:13px;color:var(--ink-soft);padding:20px 4px;text-align:center;}

/* ---- picking ---- */
.pick-counter{
  font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-soft);margin-bottom:10px;
}
.quad-box.pick-mode{cursor:default;}
.quad-box .quota{font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:700;color:var(--ink-soft);}
.quad-box .quota.met{color:var(--accent);}
.pick-task{display:flex;align-items:center;gap:7px;margin-bottom:7px;font-size:12px;cursor:pointer;}
.pick-task .circle{width:13px;height:13px;border-radius:50%;border:1.5px solid #C7CAD1;flex-shrink:0;}
.pick-task.selected .circle{background:var(--accent);border-color:var(--accent);}
.pick-task.selected .txt{color:#155F57;font-weight:600;}
.pick-task .txt{color:var(--ink);}
.confirm-btn{
  margin-top:auto;width:100%;text-align:center;padding:13px;
  font-size:14px;font-weight:700;border:none;
  background:#E7E9EA;color:#9EA1A8;cursor:not-allowed;
}
.confirm-btn.ready{background:var(--accent);color:var(--accent-on);cursor:pointer;}

/* ---- focus ---- */
.focus-group{margin-bottom:16px;}
.focus-group-title{
  font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:0.04em;
  color:var(--ink-soft);margin:0 0 7px;display:flex;justify-content:space-between;
}
.focus-item{
  display:flex;align-items:center;gap:9px;padding:9px 0;
  border-bottom:1px solid var(--border);cursor:pointer;
}
.focus-item:last-child{border-bottom:none;}
.focus-check{width:15px;height:15px;border:1.5px solid #C7CAD1;flex-shrink:0;position:relative;}
.focus-check.checked{background:var(--accent);border-color:var(--accent);}
.focus-check.checked::after{
  content:'';position:absolute;left:3px;top:0px;width:4px;height:9px;
  border:solid #fff;border-width:0 1.5px 1.5px 0;transform:rotate(45deg);
}
.focus-txt{font-size:13px;color:var(--ink);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.focus-item.done .focus-txt{color:var(--ink-soft);text-decoration:line-through;text-decoration-color:var(--accent);}
.focus-tag{font-size:10px;padding:2px 8px;border-radius:999px;background:#F0F0F1;color:#5B5D63;font-weight:600;flex-shrink:0;}
.focus-remove{
  flex-shrink:0;background:none;border:none;color:var(--ink-soft);
  font-size:16px;line-height:1;padding:2px 4px;cursor:pointer;
}
.focus-remove:active{color:var(--warn);}
.focus-check-btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:none;border:none;padding:4px;margin:-4px;cursor:pointer;flex-shrink:0;
  -webkit-appearance:none;appearance:none;
}
.day-hint{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--ink-soft);margin:0 0 12px;}

.done-banner{
  margin-top:14px;background:var(--accent);color:var(--accent-on);
  padding:16px 12px;display:flex;align-items:baseline;justify-content:center;
  flex-wrap:wrap;gap:6px;
}
.done-banner .headline{font-family:'Newsreader',serif;font-weight:500;font-size:16px;text-align:center;}
.done-banner .sub{font-family:'Newsreader',serif;font-weight:400;font-size:16px;opacity:0.92;text-align:center;}

/* ---- calendar ---- */
.cal-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px;}
.cal-title{font-family:'Newsreader',serif;font-weight:500;font-size:17px;}
.cal-nav{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--ink-soft);background:none;border:none;padding:6px;cursor:pointer;}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;}
.cal-dow{font-family:'JetBrains Mono',monospace;font-size:9px;color:#B7BAC1;text-align:center;padding-bottom:6px;}
.cal-cell{
  aspect-ratio:1;display:flex;align-items:center;justify-content:center;
  font-family:'Inter',sans-serif;font-size:11px;color:#5B5D63;
  background:#FBFBFC;border:1px solid #F0F0F1;cursor:pointer;
}
.cal-cell.empty{visibility:hidden;cursor:default;}
.cal-cell.full{background:var(--accent);color:var(--accent-on);border-color:var(--accent);}
.cal-cell.partial{background:var(--accent-tint);color:#155F57;border-color:#CFE7E3;}
.cal-cell.today{border:1.5px solid var(--ink);font-weight:700;}
.cal-cell.future{color:#D6D8DC;cursor:default;}

/* ---- settings ---- */
.settings-list{display:flex;flex-direction:column;gap:10px;}
.settings-btn{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px;border:1px solid var(--border);background:var(--surface);
  font-family:inherit;font-size:14px;color:var(--ink);cursor:pointer;text-align:left;
}
.settings-btn .arrow{color:var(--ink-soft);}
.settings-note{font-size:12px;color:var(--ink-soft);line-height:1.6;margin-top:4px;}
input[type=file]{display:none;}

/* ---- tab bar ---- */
.tab-bar{
  display:flex;border-top:1px solid var(--border);
  padding:10px 18px calc(env(safe-area-inset-bottom) + 10px);
  background:var(--surface);
}
.tab-item{
  flex:1;display:flex;justify-content:center;align-items:center;
  color:#B7BAC1;background:none;border:none;padding:6px 0;cursor:pointer;
}
.tab-item.active{color:var(--accent);}
.icon-board{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:2px;width:15px;height:15px;}
.icon-board i{background:currentColor;}
.icon-cal{position:relative;width:15px;height:14px;margin-top:4px;border:1.5px solid currentColor;}
.icon-cal i{position:absolute;background:currentColor;}
.icon-cal .r1{top:-4px;left:2px;width:1.5px;height:5px;}
.icon-cal .r2{top:-4px;right:2px;width:1.5px;height:5px;}
.icon-cal .bar{top:2px;left:0;right:0;height:1.5px;}
.icon-settings{display:flex;flex-direction:column;justify-content:space-between;width:15px;height:13px;}
.icon-settings i{height:1.5px;background:currentColor;}
.icon-settings i:nth-child(1){width:100%;}
.icon-settings i:nth-child(2){width:65%;}
.icon-settings i:nth-child(3){width:85%;}

/* ---- add-task sheet ---- */
.sheet-overlay{
  position:fixed;inset:0;background:rgba(22,23,26,0.35);
  display:none;align-items:flex-end;justify-content:center;z-index:50;
}
.sheet-overlay.active{display:flex;}
.sheet{
  width:100%;max-width:480px;background:var(--surface);
  padding:20px 18px calc(env(safe-area-inset-bottom) + 18px);
  max-height:85vh;overflow-y:auto;
}
.sheet-title{font-family:'Newsreader',serif;font-weight:500;font-size:17px;margin:0 0 16px;}
.field-label{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--ink-soft);margin:14px 0 6px;letter-spacing:0.03em;}
.date-row{display:flex;gap:8px;}
.date-chip{
  font-family:'JetBrains Mono',monospace;font-size:12px;padding:7px 12px;
  border:1px dashed #C7CAD1;color:var(--ink-soft);background:#FBFBFC;cursor:pointer;
}
.date-chip.set{border:1px solid var(--accent);border-style:solid;color:var(--accent);background:var(--accent-tint);font-weight:600;}
.date-input{border:1px solid var(--border);padding:7px 10px;font-family:inherit;font-size:12px;background:#FBFBFC;color:var(--ink);}
.qp-hint{font-family:'JetBrains Mono',monospace;font-size:10px;line-height:1.6;color:var(--ink-soft);margin:0 0 8px;}
.qp-hint .hl{color:var(--accent);font-weight:700;}
.qp-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;}
.qp-cell{
  font-family:'Inter',sans-serif;font-size:12px;font-weight:600;
  padding:14px 8px;border:1px solid var(--border);background:#FBFBFC;
  color:#5B5D63;text-align:center;cursor:pointer;
}
.qp-cell.active{background:var(--accent);border-color:var(--accent);color:var(--accent-on);}
.sheet-actions{display:flex;gap:10px;margin-top:20px;}
.btn{flex:1;padding:13px;font-size:14px;font-weight:700;border:none;cursor:pointer;font-family:inherit;}
.btn-primary{background:var(--accent);color:var(--accent-on);}
.btn-primary:disabled{background:#E7E9EA;color:#9EA1A8;cursor:not-allowed;}
.btn-ghost{background:none;border:1px solid var(--border);color:var(--ink-soft);}
.btn-danger{background:var(--danger);color:#fff;}
.btn-delete-link{
  display:block;width:100%;margin-top:14px;padding:6px;background:none;border:none;
  font-family:inherit;font-size:12.5px;color:var(--danger);text-align:center;cursor:pointer;
}

.toast{
  position:fixed;left:50%;bottom:90px;transform:translateX(-50%);
  background:var(--ink);color:#fff;padding:10px 18px;font-size:13px;
  z-index:100;opacity:0;pointer-events:none;transition:opacity .2s;
  display:flex;align-items:center;gap:12px;max-width:calc(100% - 36px);
}
.toast.show{opacity:1;pointer-events:auto;}
.toast-msg{white-space:nowrap;}
.toast-undo{
  flex-shrink:0;background:none;border:none;color:#8FE3D3;font-weight:700;
  text-decoration:underline;cursor:pointer;font-size:13px;padding:0;font-family:inherit;
}