/* 30 Day Habit app. Tokens first: change colours here and nowhere else.
   Light = Direction A (Notebook), dark = Direction B (Cover).
   See ../versions/2026-10-16-design-system.md for the why and the contrast checks. */

:root {
  --paper: #F4F1EA;
  --card: #FFFDF8;
  --ink: #1F2340;
  --ink-soft: #5A5E78;
  --accent: #C2430F;
  --btn-main-bg: #C2430F;
  --btn-main-fg: #FFFFFF;
  --hl: rgba(255, 122, 61, .42);
  --rule: rgba(31, 35, 64, .18);
  --grid: rgba(40, 60, 120, .07);

  --serif: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --display: "Bodoni Moda", "Newsreader", Georgia, serif;

  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px;
  --side: 22px;
  --radius: 14px;
  --tap: 44px;
  --speed: 150ms;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1F2340;
    --card: #272C4F;
    --ink: #F4F1EA;
    --ink-soft: #A9ADC4;
    --accent: #FF7A3D;
    --btn-main-bg: #F4F1EA;
    --btn-main-fg: #1F2340;
    --hl: transparent;
    --rule: rgba(244, 241, 234, .16);
    --grid: transparent;
  }
  mark { text-decoration: underline 3px var(--accent); text-underline-offset: 5px; }
}

/* Follows the iPhone text size setting (Dynamic Type). 1rem = 17px at the default size. */
html { font: -apple-system-body; -webkit-text-size-adjust: 100%; }
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.45;
  -webkit-tap-highlight-color: transparent;
}
button, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }

.app {
  min-height: 100%;
  max-width: 520px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left);
}
.view { flex: 1; display: flex; flex-direction: column; }
.view.center { text-align: center; }
.body { flex: 1; padding: var(--s5) var(--side) var(--s4); }
.dock { padding: 0 18px var(--s3); display: grid; gap: 10px; }
.view:last-of-type .dock, .view.center .dock { padding-bottom: calc(var(--s4) + env(safe-area-inset-bottom)); }

/* Type */
.kicker { font: 500 .72rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin: 0; }
.kicker .soft { color: var(--ink-soft); }
h1 { font-weight: 400; font-size: 2rem; line-height: 1.08; margin: var(--s3) 0 var(--s2); }
.sub { color: var(--ink-soft); margin: 0 0 var(--s5); }
.fine { font-size: .8rem; color: var(--ink-soft); margin: var(--s2) 0; }
mark { background: linear-gradient(transparent 60%, var(--hl) 60%); color: inherit; }
.label { display: block; font: 500 .72rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); margin: var(--s5) 0 var(--s2); }
.error { color: var(--accent); font-size: .9rem; margin: var(--s2) 0 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Cards, fields, chips */
.card { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 14px 16px; margin: 0 0 14px; }
.field {
  width: 100%; min-height: var(--tap); padding: 6px 2px;
  background: transparent; border: 0; border-bottom: 1.5px solid var(--ink); border-radius: 0;
  font-size: 1.05rem; text-align: inherit;
}
.field:focus { outline: none; border-bottom-color: var(--accent); }
.field::placeholder { color: var(--ink-soft); opacity: .8; font-style: italic; }
.field.date { max-width: 220px; margin: 0 auto; display: block; text-align: center; -webkit-appearance: none; appearance: none; }
.ifthen { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-items: center; text-align: left; }
.ifthen label { font-style: italic; color: var(--ink-soft); }
.ifthen .field { border-bottom-color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: var(--s2); justify-content: center; margin-top: var(--s3); }
.chip {
  min-height: var(--tap); padding: 0 16px; border-radius: 999px;
  border: 1px solid var(--ink); background: var(--card); color: var(--ink); font-size: .95rem;
}
.chip[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.steps { list-style: none; padding: 14px 16px; text-align: left; }
.steps li { display: flex; gap: 12px; align-items: baseline; margin: 8px 0; }
.steps .n { font: 500 .8rem var(--mono); color: var(--accent); }

/* Buttons */
.btn {
  display: flex; align-items: center; justify-content: center; width: 100%; min-height: 56px;
  border-radius: var(--radius); border: 1.5px solid var(--ink); background: var(--card); color: var(--ink);
  font: 500 .85rem var(--mono); letter-spacing: .06em; text-transform: uppercase; cursor: pointer;
  transition: transform var(--speed) ease, background-color var(--speed) ease;
}
.btn:active { transform: scale(.97); }
.btn.main { min-height: 64px; background: var(--btn-main-bg); border-color: var(--btn-main-bg); color: var(--btn-main-fg); font-size: .9rem; }
.btn.quiet { min-height: var(--tap); border-color: transparent; background: transparent; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 4px; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (prefers-color-scheme: dark) {
  .btn { border-radius: 999px; background: transparent; border-color: var(--rule); }
  .btn.main { background: var(--btn-main-bg); border-color: var(--btn-main-bg); }
  .card { border-color: transparent; }
}

/* Today */
.fresh { background: var(--ink); color: var(--paper); border: 0; padding: 10px 16px; }
.fresh b { font: 500 .72rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: #FF9A6B; margin-right: 6px; }
@media (prefers-color-scheme: dark) {
  .fresh { background: transparent; border: 1px solid var(--accent); color: var(--accent); border-radius: 999px; padding: 6px 12px; display: inline-block; font: 500 .72rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
  .fresh b { color: inherit; font: inherit; }
}
.daynum { font-family: var(--display); font-weight: 400; font-size: clamp(6rem, 34vw, 9rem); line-height: .9; margin: var(--s1) 0 0; letter-spacing: -.02em; }
.daynum small { font: 400 1.3rem var(--mono); color: var(--ink-soft); letter-spacing: 0; margin-left: 6px; }
.question { font-weight: 400; font-size: 1.75rem; line-height: 1.1; margin: var(--s4) 0 var(--s2); }
.plan { font-style: italic; color: var(--ink-soft); font-size: 1.05rem; margin: 0 0 var(--s5); border-left: 2px solid var(--accent); padding-left: 12px; }
.nudge { font-size: 1.3rem; margin: 6px 0 0; }
.logged { animation: rise var(--speed) ease both; }
.logged .state { font-size: 1.3rem; margin: 4px 0 0; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Tally: six groups of five strokes, struck through when a group of five is all done */
.tally { display: flex; flex-wrap: wrap; gap: 14px 12px; margin: var(--s3) 0; padding: 4px 0; }
.group { position: relative; display: flex; gap: 6px; height: 40px; padding: 0 2px; }
.mark { width: 3px; height: 100%; border-radius: 2px; background: var(--ink); }
.mark.skip { background: repeating-linear-gradient(var(--ink-soft) 0 4px, transparent 4px 8px); }
.mark.missed { background: var(--accent); height: 55%; align-self: flex-end; }
.mark.open { background: transparent; box-shadow: inset 0 0 0 1.5px var(--ink-soft); width: 5px; opacity: .7; }
.mark.future { background: var(--rule); }
.mark.now { outline: 2px solid var(--accent); outline-offset: 3px; }
.slash { position: absolute; left: -4px; right: -4px; top: 50%; height: 3px; border-radius: 2px; background: var(--ink); transform: rotate(-28deg); }
.tally.big .group { height: 52px; }
.keys { display: flex; gap: 14px; flex-wrap: wrap; font-size: .8rem; color: var(--ink-soft); margin: 4px 0 var(--s5); }
.keys i { display: inline-block; width: 3px; height: 14px; vertical-align: -2px; margin-right: 6px; border-radius: 1px; }

/* 30 days */
.pct { font-family: var(--display); font-weight: 400; font-size: 5rem; line-height: .95; margin: var(--s2) 0 0; }
.counts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; text-align: center; margin-bottom: var(--s4); }
.counts div { background: var(--card); border: 1px solid var(--rule); border-radius: 12px; padding: 10px 4px; font-size: .9rem; color: var(--ink-soft); }
.counts b { display: block; font-weight: 400; font-size: 1.6rem; color: var(--ink); }

/* Tab bar */
.tabbar {
  display: flex; justify-content: space-around; border-top: 1px solid var(--rule); background: var(--paper);
  padding: 4px 6px calc(6px + env(safe-area-inset-bottom)); position: sticky; bottom: 0;
}
.tabbar button {
  min-height: var(--tap); min-width: 88px; border: 0; background: none; color: var(--ink-soft);
  font: 500 .7rem var(--mono); letter-spacing: .06em; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.tabbar button::before { content: ""; width: 18px; height: 3px; border-radius: 2px; background: currentColor; opacity: 0; }
.tabbar button[aria-current="page"] { color: var(--accent); }
.tabbar button[aria-current="page"]::before { opacity: 1; }

/* Warning banner */
.banner { background: var(--accent); color: var(--btn-main-fg); padding: 10px var(--side); font-size: .9rem; }
@media (prefers-color-scheme: dark) { .banner { color: var(--paper); } }

/* ?review: shows every placeholder line with a dotted underline */
.review [data-ph] { text-decoration: underline dotted var(--accent) 2px; text-underline-offset: 3px; }

/* Reduce Motion: no movement, colour changes only */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .btn:active { transform: none; }
}