/* Red, white and blue. System fonts on purpose: the app must work offline with no font downloads. */
:root {
  --bg: #f4f7fc;
  --card: #ffffff;
  --ink: #0f1f3d;
  --muted: #5a6784;
  --line: #dbe3f0;
  --navy: #13294b;
  --blue: #2456c8;
  --blue-soft: #e4ecfb;
  --red: #d62839;
  --red-soft: #fde8ea;
  --on-accent: #ffffff;
  --shadow: 0 1px 2px rgb(15 31 61 / 6%), 0 6px 18px rgb(15 31 61 / 7%);
  --radius-lg: 18px;
  --radius-sm: 10px;
  --font: -apple-system, system-ui, "Helvetica Neue", sans-serif;
  --font-num: ui-rounded, -apple-system, system-ui, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #081326;
    --card: #10223f;
    --ink: #f2f5fb;
    --muted: #9fb0cf;
    --line: #213a63;
    --navy: #0c1a33;
    --blue: #6e9cff;
    --blue-soft: #16305c;
    --red: #ff5c6c;
    --red-soft: #3a1726;
    --on-accent: #ffffff;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 var(--font);
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}

.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; }

/* Header: navy band with a thin red and white stripe underneath */
.top {
  position: sticky; top: 0; z-index: 5;
  background: var(--navy); color: #fff;
  padding: calc(env(safe-area-inset-top) + 10px) 16px 12px;
  box-shadow: 0 3px 0 #fff, 0 6px 0 var(--red);
}
.top-row { display: flex; align-items: center; gap: 8px; max-width: 560px; margin: 0 auto; }
.top h1 { font-size: 22px; margin: 0; flex: 1; letter-spacing: -0.01em; }
.top .sub { font-size: 13px; opacity: 0.8; max-width: 560px; margin: 2px auto 0; }
.icon-btn {
  appearance: none; border: 0; background: rgb(255 255 255 / 12%); color: #fff;
  width: 40px; height: 40px; border-radius: 12px; font-size: 20px; cursor: pointer;
}
.icon-btn:active { transform: scale(0.94); }

main { max-width: 560px; margin: 0 auto; padding: 20px 16px 24px; }

.card {
  background: var(--card); border-radius: var(--radius-lg); box-shadow: var(--shadow);
  padding: 16px; margin-bottom: 16px;
}
.card h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin: 0 0 10px; }
.card h3 { font-size: 17px; margin: 0 0 4px; }

.banner {
  border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 16px; font-size: 14px;
  background: var(--red-soft); color: var(--red); font-weight: 600;
}
.banner.blue { background: var(--blue-soft); color: var(--blue); }

/* Lift card: the one big call to action on lift days */
.lift {
  background: linear-gradient(135deg, var(--blue), var(--navy));
  color: #fff; border-radius: var(--radius-lg); padding: 18px; margin-bottom: 16px;
  display: flex; align-items: center; gap: 14px; box-shadow: var(--shadow);
}
.lift .letter {
  width: 52px; height: 52px; border-radius: 14px; background: #fff; color: var(--navy);
  display: grid; place-items: center; font: 800 26px var(--font-num);
  box-shadow: inset 0 -4px 0 var(--red);
}
.lift .meta { flex: 1; }
.lift .meta b { display: block; font-size: 17px; }
.lift .meta span { font-size: 13px; opacity: 0.85; }
.lift.done .letter { background: var(--red); color: #fff; box-shadow: none; }

/* Buttons */
.btn {
  appearance: none; border: 0; cursor: pointer; font: 600 15px var(--font);
  background: var(--blue); color: var(--on-accent); padding: 12px 16px; border-radius: 12px;
  transition: transform 120ms var(--ease), opacity 120ms;
}
.btn:active { transform: scale(0.97); }
.btn.ghost { background: var(--blue-soft); color: var(--blue); }
.btn.red { background: var(--red); }
.btn.white { background: #fff; color: var(--navy); }
.btn.block { width: 100%; }
.btn:focus-visible, .habit:focus-visible, .chip:focus-visible, input:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; }

/* Habit rows */
.habit {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  appearance: none; border: 0; background: none; color: inherit; font: inherit;
  padding: 11px 2px; border-top: 1px solid var(--line); cursor: pointer;
}
.habit:first-of-type { border-top: 0; }
.tick {
  flex: none; width: 30px; height: 30px; border-radius: 9px; border: 2px solid var(--line);
  display: grid; place-items: center; transition: background 160ms var(--ease), transform 160ms var(--ease);
}
.habit[aria-pressed="true"] .tick { background: var(--blue); border-color: var(--blue); transform: scale(1.06); }
.habit[aria-pressed="true"] .tick::after { content: ""; width: 11px; height: 6px; border: 3px solid #fff; border-top: 0; border-right: 0; transform: translateY(-2px) rotate(-45deg); }
.habit .label { flex: 1; }
.habit .hint { display: block; font-size: 12px; color: var(--muted); }
.streak { font: 700 13px var(--font-num); color: var(--red); white-space: nowrap; }
.streak.zero { color: var(--muted); font-weight: 500; }

/* Inputs */
.field-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 6px; }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
input {
  font: 600 17px var(--font-num); color: var(--ink); background: var(--bg);
  border: 1.5px solid var(--line); border-radius: 10px; padding: 9px 8px; width: 100%; min-width: 0;
}
input::placeholder { color: var(--muted); opacity: 0.6; font-weight: 500; }
.sleep-note { font-size: 13px; color: var(--muted); margin: 4px 0 8px; }

/* Session logger */
.chips { display: flex; gap: 8px; margin-bottom: 14px; }
.chip {
  appearance: none; border: 1.5px solid var(--line); background: var(--card); color: var(--ink);
  font: 700 16px var(--font-num); border-radius: 12px; padding: 8px 16px; cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--navy); color: #fff; border-color: var(--navy); }
.ex .sub { font-size: 13px; color: var(--muted); }
.ex .cue { font-size: 13px; margin: 6px 0 10px; }
.ex .last { font-size: 13px; color: var(--blue); margin-bottom: 8px; }
.set-row { display: grid; grid-template-columns: 34px 1fr 1fr; gap: 8px; align-items: center; margin-bottom: 8px; }
.set-row .n { font: 700 14px var(--font-num); color: var(--muted); text-align: center; }
.ex-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.call { font-size: 13px; font-weight: 700; padding: 6px 10px; border-radius: 8px; }
.call.up { background: var(--red); color: #fff; }
.call.hold { background: var(--blue-soft); color: var(--blue); }
.small-btn { appearance: none; border: 0; background: none; color: var(--blue); font: 600 14px var(--font); padding: 6px 0; cursor: pointer; }
.toggle { display: flex; gap: 6px; align-items: center; font-size: 13px; color: var(--muted); }
.toggle input { width: 18px; height: 18px; accent-color: var(--blue); }
details.warm summary { cursor: pointer; font-weight: 600; }
details.warm li { margin: 6px 0; font-size: 14px; }

/* Stats */
.hero { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.stat { background: var(--card); border-radius: 16px; padding: 14px 10px; box-shadow: var(--shadow); text-align: center; }
.stat b { display: block; font: 800 28px/1.1 var(--font-num); color: var(--navy); }
@media (prefers-color-scheme: dark) { .stat b { color: #fff; } }
.stat span { font-size: 12px; color: var(--muted); }
.stat.red b { color: var(--red); }

.streak-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.streak-table td { padding: 8px 0; border-top: 1px solid var(--line); }
.streak-table td.n { text-align: right; font: 700 15px var(--font-num); width: 64px; }
.streak-table th { font-size: 12px; color: var(--muted); font-weight: 500; text-align: right; }
.streak-table th:first-child { text-align: left; }

.chart { width: 100%; height: auto; display: block; }
.chart .axis { font: 11px var(--font-num); fill: var(--muted); }
.chart .axis.flag { fill: var(--red); font-weight: 700; }
.chart .hm-base { fill: var(--bg); stroke: var(--line); }
.chart .hm-base.future { opacity: 0.5; }
.chart .hm-base.today { stroke: var(--red); stroke-width: 2; }
.chart .hm-fill { fill: var(--blue); }
.chart .dot-done { fill: var(--red); }
.chart .dot-open { fill: none; stroke: var(--red); stroke-width: 1.5; }
.chart .bar { fill: var(--blue); opacity: 0.55; }
.chart .bar.current { opacity: 1; }
.chart .ref { stroke: var(--red); stroke-dasharray: 4 4; stroke-width: 1.2; }
.chart .line { fill: none; stroke: var(--blue); stroke-width: 2.5; stroke-linejoin: round; }
.chart .pt { fill: var(--card); stroke: var(--blue); stroke-width: 2; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); margin-top: 8px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.lifts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.lifts h4 { margin: 0; font-size: 13px; }
.lifts .now { font: 700 13px var(--font-num); color: var(--muted); }
.empty { font-size: 13px; color: var(--muted); margin: 8px 0; }

.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px 8px; }
.badge { text-align: center; font-size: 11px; line-height: 1.25; color: var(--muted); }
.medal {
  width: 58px; height: 58px; margin: 0 auto 6px; border-radius: 50%;
  display: grid; place-items: center; font: 800 15px var(--font-num);
  background: var(--bg); color: var(--muted); border: 2px dashed var(--line); position: relative;
}
.badge.earned { color: var(--ink); }
.badge.earned .medal {
  background: radial-gradient(circle closest-side, var(--blue) 0 68%, #fff 69% 82%, var(--red) 83%);
  color: #fff; border: 0; box-shadow: var(--shadow);
}
.badge .prog { display: block; font: 600 11px var(--font-num); color: var(--blue); }

.week-grid { width: 100%; border-collapse: collapse; font-size: 13px; }
.week-grid th { font-weight: 600; color: var(--muted); font-size: 12px; padding: 4px 0; }
.week-grid td { text-align: center; padding: 5px 0; border-top: 1px solid var(--line); }
.week-grid td:first-child { text-align: left; }
.dot { display: inline-block; width: 14px; height: 14px; border-radius: 4px; background: var(--line); }
.dot.on { background: var(--blue); }
.list-plain { margin: 0; padding-left: 18px; font-size: 14px; }
.list-plain li { margin: 5px 0; }
.good { color: var(--blue); font-weight: 700; }
.warn { color: var(--red); font-weight: 700; }

/* Tab bar */
nav.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--line);
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
}
nav.tabs button {
  appearance: none; border: 0; background: none; color: var(--muted); cursor: pointer;
  font: 600 11px var(--font); display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 4px 0;
}
nav.tabs svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
nav.tabs button[aria-current="page"] { color: var(--red); }

.toast {
  position: fixed; left: 50%; bottom: calc(90px + env(safe-area-inset-bottom)); transform: translateX(-50%) translateY(20px);
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 12px; font-size: 14px; font-weight: 600;
  opacity: 0; transition: opacity 200ms, transform 300ms var(--ease); pointer-events: none; z-index: 20; box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 30; overflow: hidden; }
.confetti i { position: absolute; top: -12px; width: 8px; height: 14px; border-radius: 2px; animation: fall 1.4s var(--ease) forwards; }
@keyframes fall { to { transform: translate(var(--dx), 110vh) rotate(var(--rot)); opacity: 0.9; } }
@media (prefers-reduced-motion: reduce) {
  .confetti { display: none; }
  * { transition: none !important; }
}

.settings-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.settings-row:first-of-type { border-top: 0; }
.settings-row input[type="date"] { width: auto; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.fine { font-size: 13px; color: var(--muted); }
.fine a { color: var(--blue); }
.tag { font: 700 10px var(--font); text-transform: uppercase; letter-spacing: 0.06em; color: var(--red); background: var(--red-soft); padding: 2px 6px; border-radius: 6px; vertical-align: 2px; white-space: nowrap; }
details.how { margin: 6px 0 10px; border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 8px 12px; background: var(--bg); }
details.how summary { cursor: pointer; font-weight: 700; font-size: 14px; color: var(--blue); }
details.how[open] summary { margin-bottom: 6px; }
details.how ol { margin: 0 0 10px; padding-left: 20px; font-size: 14px; }
details.how li { margin: 5px 0; }
.btn.video { display: inline-block; text-decoration: none; font-size: 14px; padding: 9px 14px; }
.warm-list details.how { background: var(--card); }
.warm-list details.how summary { color: var(--ink); font-weight: 600; }
.set-row { grid-template-columns: 34px 1fr 1fr 44px; }
.set-row.noload { grid-template-columns: 34px 1fr 44px; }
.fill {
  appearance: none; height: 42px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--card);
  color: var(--muted); font: 700 18px var(--font); cursor: pointer;
}
.fill.on { background: var(--blue); border-color: var(--blue); color: #fff; }
.fill:disabled { opacity: 0.35; }
.fill:active { transform: scale(0.94); }
.target { background: var(--blue-soft); border-radius: var(--radius-sm); padding: 8px 12px; margin: 0 0 10px; font-size: 13px; color: var(--ink); }
.target b { display: block; font-size: 15px; color: var(--blue); margin-bottom: 2px; }
.stepper { display: grid; grid-template-columns: 1fr 48px 76px 48px; align-items: center; gap: 8px; padding: 6px 0; }
.stepper .lbl { font-size: 14px; color: var(--muted); }
.stepper b { text-align: center; font-size: 22px; }
.stepper:not(.logged) b { color: var(--muted); }
.step { appearance: none; height: 44px; border-radius: 12px; border: 0; background: var(--blue-soft); color: var(--blue); font: 700 24px var(--font); cursor: pointer; }
.step:active { transform: scale(0.94); }
.sleep-note .btn { margin-right: 8px; padding: 10px 14px; }
.weight-field { margin: 4px 0 8px; }
.weight-field input { max-width: 140px; }
select { font: 600 16px var(--font); color: var(--ink); background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px; padding: 8px; }
.banner-btn { appearance: none; border: 0; width: 100%; text-align: left; font: 600 14px var(--font); cursor: pointer; }
.btn:disabled { opacity: 0.5; }
.mob-tick { border-top: 1px solid var(--line); margin-top: 4px; }
.dot.na { background: transparent; border: 1.5px dashed var(--line); }
.act-row { flex-wrap: wrap; margin-bottom: 4px; }
.chip.act { background: var(--blue-soft); color: var(--blue); border-color: transparent; font-size: 14px; }
.chip.add { color: var(--blue); font-size: 14px; }