/* =========================================================================
   Habit Tracker — styles
   ========================================================================= */
:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2230;
  --elev: #21262d;
  --border: #2b323c;
  --border-soft: #22272e;
  --text: #e6edf3;
  --text-2: #9aa7b4;
  --muted: #6e7b8a;
  --accent: #3987e5;
  --good: #2ea043;
  --warn: #d9a406;
  --bad: #e5534b;
  --heat-empty: #21262d;
  --shadow: 0 6px 24px rgba(0,0,0,.35);
  --radius: 14px;
  --radius-sm: 9px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
:root[data-theme="light"] {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --panel-2: #f6f8fc;
  --elev: #eef1f6;
  --border: #dde3ec;
  --border-soft: #e7ebf1;
  --text: #16202c;
  --text-2: #56626f;
  --muted: #7c8896;
  --heat-empty: #e9edf2;
  --shadow: 0 6px 22px rgba(60,80,120,.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 90px;
}
button { font-family: inherit; cursor: pointer; }
h3 { margin: 0; }

/* ------------------------------------------------------------------ app bar */
.app-bar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 20px;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: .2px; font-size: 17px; }
.brand-mark { font-size: 24px; display: inline-flex; }
.brand-mark svg { display: block; border-radius: 7px; }

.sync-status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500;
  color: var(--text-2); padding: 3px 10px; border-radius: 20px; background: var(--elev); border: 1px solid var(--border); }
.sync-status[hidden] { display: none; }
.sync-status .sync-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--muted); }
.sync-status.saved .sync-dot { background: var(--good); }
.sync-status.saving .sync-dot { background: var(--warn); animation: syncPulse 1s ease-in-out infinite; }
.sync-status.error .sync-dot { background: var(--bad); }
.sync-status.error { color: var(--bad); }
@keyframes syncPulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .4; transform: scale(.7); } }
@media (max-width: 620px) { .sync-status .sync-text { display: none; } .sync-status { padding: 4px; } }

.nav-tabs { display: flex; gap: 4px; }
.nav-tab {
  display: flex; align-items: center; gap: 7px;
  background: transparent; border: 1px solid transparent; color: var(--text-2);
  padding: 8px 14px; border-radius: 10px; font-size: 14px; font-weight: 500;
  transition: background .15s, color .15s, border-color .15s;
}
.nav-tab:hover { color: var(--text); background: var(--elev); }
.nav-tab.active { color: var(--text); background: var(--panel-2); border-color: var(--border); box-shadow: inset 0 -2px 0 var(--accent); }
.nav-ic { font-size: 15px; }

.app-main { max-width: 1080px; margin: 0 auto; padding: 22px 18px; }
.view { display: none; animation: fade .25s ease; }
.view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* -------------------------------------------------------------------- panel */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.panel-h { font-size: 15px; font-weight: 650; letter-spacing: .2px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 12px; flex-wrap: wrap; }
.muted-p { color: var(--text-2); font-size: 13.5px; margin: 4px 0 14px; }
.empty { color: var(--muted); text-align: center; padding: 18px; }

/* --------------------------------------------------------------- day header */
.day-header { display: flex; align-items: center; justify-content: space-between; }
.day-title { text-align: center; }
.day-date { font-size: 19px; font-weight: 680; }
.day-sub { color: var(--text-2); font-size: 13px; margin-top: 2px; }
.icon-btn {
  width: 42px; height: 42px; border-radius: 11px; font-size: 22px; line-height: 1;
  background: var(--elev); border: 1px solid var(--border); color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .15s, transform .1s;
}
.icon-btn.sm { width: 34px; height: 34px; font-size: 15px; }
.icon-btn:hover:not(:disabled) { background: var(--panel-2); }
.icon-btn:active:not(:disabled) { transform: scale(.94); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.link-btn { background: none; border: none; color: var(--accent); font-size: 13px; padding: 0; }
.link-btn:hover { text-decoration: underline; }

/* --------------------------------------------------------------- score card */
.score-card { display: flex; align-items: center; gap: 18px; }
.score-ring {
  width: 72px; height: 72px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 750; font-variant-numeric: tabular-nums;
  border: 4px solid var(--muted); color: var(--text);
}
.score-card.good .score-ring { border-color: var(--good); color: var(--good); }
.score-card.warn .score-ring { border-color: var(--warn); color: var(--warn); }
.score-card.bad  .score-ring { border-color: var(--bad);  color: var(--bad); }
.score-main { font-size: 17px; font-weight: 640; }
.score-sub { color: var(--text-2); font-size: 13px; }

/* --------------------------------------------------------------- habit rows */
.habit-list { display: grid; gap: 12px; }
.habit-row { position: relative; overflow: hidden; margin-bottom: 0; transition: border-color .2s; }
.habit-row::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--accent); opacity: .9; }
.habit-row.met { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.habit-row.skipped { opacity: .62; }
.habit-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }

/* Drag-to-reorder handle + states */
.grip { display: inline-flex; align-items: center; justify-content: center; flex: none;
  color: var(--muted); cursor: grab; touch-action: none; padding: 2px; margin-right: -2px;
  border-radius: 6px; transition: color .15s, background .15s; }
.grip:hover { color: var(--text); background: var(--elev); }
.grip:active { cursor: grabbing; }
.grip-ic { fill: currentColor; display: block; }
.habit-row.dragging, .hm-row.dragging { box-shadow: var(--shadow); border-color: var(--accent); opacity: .96; }
.drag-placeholder { border: 2px dashed color-mix(in srgb, var(--accent) 55%, var(--border));
  border-radius: var(--radius); background: color-mix(in srgb, var(--accent) 7%, transparent); box-sizing: border-box; }
.hm-row .drag-placeholder { border-radius: 10px; }
.chip { width: 12px; height: 12px; border-radius: 4px; flex: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.chip.sm { width: 10px; height: 10px; box-shadow: none; margin-right: 7px; vertical-align: middle; }
.habit-name { font-weight: 620; font-size: 15.5px; flex: 1; }
.streak { font-size: 13px; font-weight: 600; background: var(--elev); border: 1px solid var(--border); padding: 3px 9px; border-radius: 20px; }
.skip-btn {
  font-size: 12px; color: var(--text-2); background: transparent;
  border: 1px solid var(--border); padding: 4px 10px; border-radius: 20px; transition: all .15s;
}
.skip-btn:hover { color: var(--text); border-color: var(--muted); }
.skip-btn.on { color: var(--warn); border-color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, transparent); }

.value-control { display: flex; align-items: baseline; gap: 8px; margin-bottom: 10px; }
/* Remove the browser's up/down spinner buttons on number inputs */
input[type=number] { -moz-appearance: textfield; appearance: textfield; }
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.val-input {
  width: 110px; font-size: 22px; font-weight: 680; text-align: right;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 8px 12px; font-variant-numeric: tabular-nums;
  transition: border-color .15s, box-shadow .15s;
}
.val-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent); }
.val-input:disabled { opacity: .5; }
.unit { color: var(--text-2); font-size: 14px; font-weight: 500; }
.val-unit { font-family: inherit; font-size: 13px; font-weight: 600; color: var(--text);
  background: var(--elev); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 8px; cursor: pointer; }
.val-unit:focus { outline: none; border-color: var(--accent); }
.val-unit:disabled { opacity: .5; }
.goal-txt { color: var(--muted); font-size: 13px; margin-left: auto; }
.progress { height: 8px; background: var(--elev); border-radius: 6px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 6px; background: var(--accent); width: 0;
  transition: width .55s cubic-bezier(.22,1,.36,1); }

.check {
  display: flex; align-items: center; gap: 12px; width: 100%;
  background: var(--panel-2); border: 1.5px solid var(--border); color: var(--text);
  border-radius: 12px; padding: 14px 16px; font-size: 15px; font-weight: 600;
  transition: all .18s;
}
.check:hover:not(:disabled) { border-color: var(--muted); }
.check-box {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  border: 2px solid var(--muted); display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; transition: all .18s;
}
.check.checked { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.check.checked .check-box { background: var(--accent); border-color: var(--accent); }
.check.checked .check-txt { color: var(--accent); }
.check.pop .check-box { animation: pop .32s ease; }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.28); } 100% { transform: scale(1); } }
.check:disabled { opacity: .5; }

/* ------------------------------------------------------------------- notes */
.notes-label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.notes-area {
  width: 100%; min-height: 84px; resize: vertical; font-family: inherit; font-size: 14.5px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 12px 14px; line-height: 1.55;
}
.notes-area:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }

/* -------------------------------------------------------------- sub tabs */
.sub-tabs { display: flex; gap: 6px; margin-bottom: 16px; background: var(--panel); border: 1px solid var(--border);
  padding: 5px; border-radius: 12px; flex-wrap: wrap; }
.sub-tab { flex: 1; min-width: 84px; background: transparent; border: none; color: var(--text-2);
  padding: 9px 12px; border-radius: 8px; font-weight: 600; font-size: 13.5px; transition: all .15s; }
.sub-tab:hover { color: var(--text); }
.sub-tab.active { background: var(--accent); color: #fff; }

/* --------------------------------------------------------------- stat cards */
.cards-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.stat-card { margin-bottom: 0; padding: 16px; }
.stat-label { color: var(--text-2); font-size: 12.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.stat-value { font-size: 27px; font-weight: 740; margin: 6px 0 2px; line-height: 1.1; }
.stat-value.good { color: var(--good); } .stat-value.warn { color: var(--warn); } .stat-value.bad { color: var(--bad); }
.stat-sub { color: var(--muted); font-size: 12.5px; }

/* ------------------------------------------------------------------- table */
.table-wrap { overflow-x: auto; }
.stats-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 520px; }
.stats-table th { text-align: left; color: var(--text-2); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: .4px; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.stats-table td { padding: 11px 12px; border-bottom: 1px solid var(--border-soft); font-variant-numeric: tabular-nums; }
.stats-table tbody tr:last-child td, .stats-table tr:last-child td { border-bottom: none; }
.stats-table td:first-child { font-weight: 550; font-variant-numeric: normal; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 20px; font-weight: 650; font-size: 12.5px; }
.pill.good { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.pill.warn { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.pill.bad  { background: color-mix(in srgb, var(--bad) 18%, transparent); color: var(--bad); }
.pill.muted { background: var(--elev); color: var(--muted); }

/* ------------------------------------------------------------------- charts */
.chart-box { width: 100%; min-height: 60px; }
.chart-svg { display: block; max-width: 100%; overflow: visible; }
.grid { stroke: var(--border-soft); stroke-width: 1; }
.axis-label { fill: var(--muted); font-size: 10.5px; font-family: var(--font); }
.series-line { transition: opacity .2s; }
.crosshair { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.bar { transition: opacity .15s; }
.bar:hover { opacity: .82; }
.heat-wrap { overflow-x: auto; }
.heat-cell { cursor: pointer; transition: transform .1s; }
.heat-cell:hover { stroke: var(--text); stroke-width: 1.5; }
.heatmap text { font-variant-numeric: tabular-nums; }

.legend { display: flex; gap: 6px; flex-wrap: wrap; }
.leg { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text-2);
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 20px; padding: 4px 11px; transition: all .15s; }
.leg:hover { color: var(--text); }
.leg.off { opacity: .42; text-decoration: line-through; }
.leg .dot, .tip-row .dot { width: 9px; height: 9px; border-radius: 3px; flex: none; display: inline-block; }

.heat-key { display: flex; align-items: center; gap: 5px; justify-content: flex-end; margin-top: 10px; color: var(--muted); font-size: 12px; }
.heat-key .k { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.heat-key .k0 { background: #d33b3b; } .heat-key .k1 { background: #e8862f; } .heat-key .k2 { background: #fab219; }
.heat-key .k3 { background: #5aaa3c; } .heat-key .k4 { background: #0ca30c; }

.donut-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
.donut-cell { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 10px;
  background: var(--panel-2); border: 1px solid var(--border-soft); border-radius: 12px; }
.donut { display: block; }
.donut-track { stroke: var(--elev); }
.donut-arc { transition: stroke-dashoffset .7s cubic-bezier(.22,1,.36,1); }
.donut-label { fill: var(--text); font-size: 15px; font-weight: 720; font-family: var(--font); }
.donut-cap { font-size: 12.5px; color: var(--text-2); text-align: center; }

/* ---------------------------------------------------------------- tooltip */
.chart-tip {
  position: fixed; z-index: 100; pointer-events: none;
  background: var(--elev); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px; font-size: 12.5px; box-shadow: var(--shadow); max-width: 260px; color: var(--text);
}
.tip-title { font-weight: 680; margin-bottom: 5px; }
.tip-pct { color: var(--text-2); margin-bottom: 6px; }
.tip-row { display: flex; align-items: center; gap: 7px; padding: 1px 0; }
.tip-row b { margin-left: auto; font-variant-numeric: tabular-nums; }

/* ----------------------------------------------------------- achievements */
.badge-shelf { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.badge-card { text-align: center; padding: 16px 12px; border-radius: 14px;
  background: var(--panel-2); border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent); }
.badge-icon { font-size: 38px; line-height: 1; }
.badge-title { font-weight: 700; margin-top: 6px; }
.badge-habit { font-size: 12.5px; color: var(--text-2); margin-top: 4px; }
.badge-date { font-size: 11.5px; color: var(--muted); margin-top: 6px; }

.milestone-row { display: flex; gap: 10px; flex-wrap: wrap; }
.milestone { display: flex; align-items: center; gap: 8px; background: var(--panel-2);
  border: 1px solid var(--border); border-radius: 20px; padding: 7px 14px; font-size: 13px; }
.m-ic { font-size: 18px; }

.streak-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.streak-card { background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px;
  border-left: 4px solid var(--accent); }
.sc-name { font-weight: 620; margin-bottom: 10px; }
.sc-nums { display: flex; gap: 20px; }
.sc-nums > div { display: flex; flex-direction: column; }
.sc-big { font-size: 26px; font-weight: 750; line-height: 1; }
.sc-lbl { font-size: 11.5px; color: var(--text-2); margin-top: 3px; }
.sc-mini { margin-top: 10px; font-size: 17px; letter-spacing: 2px; }
.mini { filter: grayscale(1) opacity(.35); }
.mini.on { filter: none; }

/* -------------------------------------------------------------- settings */
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 6px 0; }
.s-title { font-weight: 600; }
.s-desc { color: var(--text-2); font-size: 13px; }
.theme-toggle { display: flex; gap: 4px; background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 4px; }
.tg { background: transparent; border: none; color: var(--text-2); padding: 7px 14px; border-radius: 7px; font-weight: 600; font-size: 13px; }
.tg.on { background: var(--accent); color: #fff; }

.client-id-row { display: flex; gap: 8px; margin: 6px 0 12px; }
.text-input {
  flex: 1; background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 9px; padding: 10px 12px; font-size: 14px; font-family: inherit;
}
.text-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.text-input.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
.color-input { width: 52px; height: 40px; padding: 2px; border: 1px solid var(--border); border-radius: 9px; background: var(--panel-2); }

.btn { background: var(--elev); border: 1px solid var(--border); color: var(--text);
  padding: 9px 15px; border-radius: 9px; font-weight: 600; font-size: 13.5px; transition: all .15s; }
.btn:hover:not(:disabled) { background: var(--panel-2); border-color: var(--muted); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.danger-ghost { background: transparent; color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, var(--border)); }
.btn.danger-ghost:hover { background: color-mix(in srgb, var(--bad) 12%, transparent); }
.btn.danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn.danger:hover:not(:disabled) { filter: brightness(1.08); }
.btn.danger:disabled { opacity: .45; cursor: default; }

/* Danger zone disclosure */
.danger-zone { margin-top: 16px; border: 1px solid color-mix(in srgb, var(--bad) 32%, var(--border)); border-radius: 12px; overflow: hidden; }
.danger-zone summary { cursor: pointer; padding: 12px 14px; font-weight: 650; font-size: 14px; color: var(--bad);
  display: flex; align-items: center; gap: 8px; user-select: none; list-style: none; }
.danger-zone summary::-webkit-details-marker { display: none; }
.danger-zone .dz-caret { margin-left: auto; transition: transform .15s; opacity: .8; }
.danger-zone[open] .dz-caret { transform: rotate(180deg); }
.danger-zone[open] summary { border-bottom: 1px solid var(--border-soft); }
.danger-zone .dz-body { padding: 12px 14px 14px; display: grid; gap: 14px; }
.dz-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.dz-row .btn { flex: none; }

/* Danger confirmation modal */
.danger-modal h3 { color: var(--bad); }
.danger-msg { color: var(--text-2); font-size: 14px; line-height: 1.55; margin: 2px 0 16px; }
.dc-word { color: var(--bad); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .5px; }
.backup-note { font-size: 13px; color: var(--text-2); background: var(--panel-2); border: 1px solid var(--border-soft);
  border-radius: 9px; padding: 9px 12px; margin-bottom: 16px; }

.drive-status { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2);
  padding: 10px 12px; background: var(--panel-2); border: 1px solid var(--border-soft); border-radius: 9px; margin-bottom: 12px; }
.badge-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.badge-dot.on { background: var(--good); box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 25%, transparent); }
.badge-dot.idle { background: var(--warn); }
.badge-dot.off { background: var(--muted); }
.drive-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.drive-msg { margin-top: 10px; font-size: 13px; min-height: 18px; }
.drive-msg.ok { color: var(--good); } .drive-msg.err { color: var(--bad); }

.habit-manage { display: grid; gap: 8px; }
.hm-row { display: flex; align-items: center; gap: 10px; background: var(--panel-2);
  border: 1px solid var(--border-soft); border-left: 4px solid var(--accent); border-radius: 10px; padding: 10px 12px; }
.hm-name { font-weight: 600; }
.hm-meta { color: var(--text-2); font-size: 12.5px; margin-left: auto; margin-right: 4px; }

/* --------------------------------------------------------------- modal */
.modal-overlay { position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center; padding: 18px; animation: fade .18s ease; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 22px;
  width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.modal h3 { margin-bottom: 16px; font-size: 17px; }
.fld { display: block; margin-bottom: 14px; }
.fld > span { display: block; font-size: 12.5px; color: var(--text-2); font-weight: 600; margin-bottom: 6px; }
.fld .text-input { width: 100%; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }

/* --------------------------------------------------------------- auth gate */
#auth-gate { display: none; }
body:not(.authed) .app-bar,
body:not(.authed) .app-main { display: none; }
body:not(.authed) #auth-gate {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px;
}
.auth-card {
  width: 100%; max-width: 400px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 18px; padding: 30px 26px; box-shadow: var(--shadow);
}
.auth-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; justify-content: center; }
.auth-brand .brand-mark { font-size: 22px; }
.auth-title { text-align: center; font-size: 20px; margin: 14px 0 18px; }
.auth-note { color: var(--text-2); font-size: 13.5px; margin: 0 0 16px; text-align: center; }
.auth-msg { font-size: 13px; margin-bottom: 12px; min-height: 0; word-break: break-word; }
.auth-msg.ok { color: var(--good); }
.auth-msg.err { color: var(--bad); }
.auth-msg:empty { display: none; }
.auth-card .fld { margin-bottom: 14px; }
.auth-card .fld .text-input { width: 100%; }
.btn.block { width: 100%; padding: 12px; font-size: 15px; margin-top: 4px; }
.auth-links { margin-top: 18px; display: flex; flex-direction: column; gap: 8px; text-align: center; font-size: 13.5px; color: var(--text-2); }
.auth-offline { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border-soft); text-align: center; }

/* --------------------------------------------------------- exclude-day row */
.exclude-row {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px; cursor: pointer;
  padding: 12px 16px;
}
.exclude-row input { width: 20px; height: 20px; accent-color: var(--warn); flex: none; }
.exclude-row span { display: flex; flex-direction: column; }
.exclude-row small { color: var(--muted); font-size: 12px; margin-top: 1px; }
.exclude-row.on { border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); background: color-mix(in srgb, var(--warn) 8%, var(--panel)); }
.habit-list.dimmed { opacity: .5; pointer-events: none; }

/* --------------------------------------------------------------- responsive */
@media (max-width: 760px) {
  .cards-row { grid-template-columns: repeat(2, 1fr); }
  .app-main { padding: 16px 12px; }
}
@media (max-width: 620px) {
  .app-bar { flex-direction: column; gap: 10px; padding: 10px 12px; }
  .nav-tabs { width: 100%; position: fixed; bottom: 0; left: 0; z-index: 50;
    background: color-mix(in srgb, var(--panel) 94%, transparent); backdrop-filter: blur(10px);
    border-top: 1px solid var(--border); padding: 6px; justify-content: space-around; }
  .nav-tab { flex-direction: column; gap: 2px; padding: 6px 8px; font-size: 11px; flex: 1; }
  .nav-tab.active { box-shadow: none; background: var(--panel-2); }
  .nav-lbl { font-size: 10.5px; }
  .nav-ic { font-size: 18px; }
  body { padding-bottom: 74px; }
}
@media (max-width: 430px) {
  .cards-row { grid-template-columns: 1fr 1fr; }
  .stat-value { font-size: 22px; }
  .client-id-row { flex-direction: column; }
}