/* ByFlow public site. Bywatts iOS 27 system: see ../byflow/spec/IOS27.md.
   Colors come ONLY from tokens.css (generated from the game's brand.json). No literal colors in this file;
   alpha and mixed variants use color-mix on the tokens. test/site.test.mjs enforces it. */

:root {
  /* shape: capsules for controls, 12 fields, 16 cards, 22 panels, 28 sheets */
  --r-chip: 9999px; --r-ctl: 12px; --r-card: 16px; --r-panel: 22px; --r-sheet: 28px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-1: 80ms; --dur-2: 200ms; --dur-3: 300ms;
  --press: 0.7;
  --glass-fx: blur(20px) saturate(180%);
  --wrap: 70rem;
  --gutter: 16px;
  --bar-h: 56px;
}
@media (min-width: 720px) { :root { --gutter: 24px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--bar-h) + 24px); }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 1.0625rem; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1 0 auto; }
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
figure { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.25rem, 1.2rem + 4.6vw, 3.75rem); letter-spacing: -0.025em; line-height: 1.04; }
h2 { font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.5rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
p { margin: 0 0 1em; max-width: 64ch; text-wrap: pretty; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
a { color: var(--accent-text); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); }
.mono { font-family: var(--mono); }
.plain { list-style: none; padding: 0; margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

:focus { outline: none; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: var(--r-ctl); box-shadow: 0 0 0 2px var(--focus-inner); }
.btn:focus-visible, .icon-btn:focus-visible, .brand:focus-visible, .bar__nav a:focus-visible, .tag:focus-visible { border-radius: var(--r-chip); }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }

.skip { position: absolute; left: var(--gutter); top: -100px; z-index: 100; min-height: 44px; display: inline-flex; align-items: center; padding: 0 20px; border-radius: var(--r-chip); background: var(--accent); color: var(--on-accent); font-weight: 600; text-decoration: none; }
.skip:focus { top: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px; border: 1px solid transparent; border-radius: var(--r-chip);
  background: var(--wash-2); color: var(--accent-text);
  font: 600 1rem/1 var(--font); text-decoration: none; white-space: nowrap; cursor: pointer;
  transition: background-color var(--dur-2) var(--ease), opacity var(--dur-1) var(--ease);
}
.btn:hover { background: var(--wash-3); text-decoration: none; }
.btn:active { opacity: var(--press); }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: var(--accent-hover); }
.btn--lg { min-height: 52px; padding: 0 28px; font-size: 1.0625rem; }
.icon-btn {
  display: inline-grid; place-items: center; width: 44px; height: 44px; padding: 0; border: 1px solid transparent; border-radius: var(--r-chip);
  background: transparent; color: var(--text); cursor: pointer;
  transition: background-color var(--dur-2) var(--ease), opacity var(--dur-1) var(--ease);
}
.icon-btn:hover { background: var(--wash-2); }
.icon-btn:active { opacity: var(--press); }
.ti { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; display: none; }
[data-theme-choice="system"] .ti--system, [data-theme-choice="light"] .ti--light, [data-theme-choice="dark"] .ti--dark { display: block; }
[data-theme-choice="system"] .ti--system path { fill: currentColor; }

/* ---------- floating glass bar (the only glass on the page) ---------- */
.bar { position: sticky; top: 0; z-index: 50; padding: 8px var(--gutter) 0; pointer-events: none; }
.bar__in {
  pointer-events: auto; display: flex; align-items: center; gap: 8px; max-width: var(--wrap); min-height: var(--bar-h); margin: 0 auto; padding: 6px 6px 6px 14px;
  border: 1px solid var(--border); border-radius: var(--r-chip); box-shadow: var(--shadow);
  background: var(--glass); -webkit-backdrop-filter: var(--glass-fx); backdrop-filter: var(--glass-fx);
}
@media (prefers-reduced-transparency: reduce), (prefers-contrast: more) {
  .bar__in { background: var(--surface); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .bar__in { background: var(--surface); }
}
.brand { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: var(--text); text-decoration: none; margin-right: auto; }
.brand:hover { text-decoration: none; }
.glyph { width: 30px; height: 30px; flex: none; }
.glyph__tile { fill: var(--brand-amber); }
.glyph__b { fill: var(--brand-ink); }
.brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; letter-spacing: -0.01em; }
.brand__by { display: none; font-size: 0.875rem; color: var(--text-dim); }
@media (min-width: 560px) { .brand__by { display: inline; } }
.bar__nav { display: none; align-items: center; gap: 2px; }
.bar__nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; border-radius: var(--r-chip); color: var(--text-dim); font-weight: 500; font-size: 0.9375rem; text-decoration: none; transition: background-color var(--dur-2) var(--ease); }
.bar__nav a:hover { background: var(--wash-2); color: var(--text); text-decoration: none; }
.bar__nav a[aria-current="page"] { background: color-mix(in srgb, var(--accent-graphic) 16%, transparent); color: var(--accent-text); }
@media (min-width: 760px) { .bar__nav { display: flex; margin-right: 8px; } .brand { margin-right: 0; } .bar__act { margin-left: auto; } }
.bar__act { display: flex; align-items: center; gap: 4px; margin-left: auto; }
@media (min-width: 760px) { .brand { margin-right: 12px; } }

/* ---------- sections ---------- */
.section { padding: 56px 0; }
@media (min-width: 900px) { .section { padding: 88px 0; } }
.section--alt { background: var(--surface-2); border-block: 1px solid var(--border); }
.eyebrow { margin: 0 0 14px; font-size: 0.9375rem; font-weight: 600; color: var(--accent-text); letter-spacing: 0.01em; }
.lede { font-size: 1.1875rem; line-height: 1.5; color: var(--text-dim); max-width: 58ch; }
.section__head { margin-bottom: 32px; max-width: 46rem; }
.section__head p { margin-top: 14px; color: var(--text-dim); }

/* ---------- hero ---------- */
.hero { padding: 32px 0 56px; }
@media (min-width: 900px) { .hero { padding: 64px 0 96px; } }
.hero__grid { display: grid; gap: 40px; align-items: center; }
@media (min-width: 960px) { .hero__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; } }
.hero h1 { margin-bottom: 20px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }
.hero__note { font-size: 0.9375rem; color: var(--text-dim); max-width: 48ch; }

/* ---------- chips and tags ---------- */
.chip { display: inline-flex; align-items: center; min-height: 24px; padding: 0 10px; border-radius: var(--r-chip); background: var(--wash-2); color: var(--text-dim); font: 500 0.75rem/1 var(--mono); letter-spacing: 0.04em; }
.tag { display: inline-flex; align-items: center; gap: 6px; min-height: 28px; padding: 0 12px; border-radius: var(--r-chip); background: var(--wash-2); color: var(--text-dim); font: 600 0.8125rem/1 var(--font); }
.tag svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.tag--now { background: color-mix(in srgb, var(--info) 16%, transparent); color: var(--info-text); }
.tag--lock { background: color-mix(in srgb, var(--caution) 16%, transparent); color: var(--caution-text); }

/* ---------- cards ---------- */
.card { display: flex; flex-direction: column; gap: 12px; padding: 22px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-card); }
.card h3 { margin: 0; }
.card p { margin: 0; color: var(--text-dim); font-size: 1rem; }
.card__top { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 24rem), 1fr)); }

/* ---------- schedule illustration (decorative, sample data) ---------- */
.panel { margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-panel); box-shadow: var(--shadow); padding: 18px 16px 16px; }
@media (min-width: 560px) { .panel { padding: 22px 22px 18px; } }
.panel__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.panel__title { font: 600 0.9375rem/1.2 var(--font); margin: 0; }
.gantt { display: grid; row-gap: 0; }
.gantt__row { display: grid; grid-template-columns: 6.25rem minmax(0, 1fr); column-gap: 10px; align-items: center; min-height: 34px; border-top: 1px solid var(--border); }
@media (min-width: 560px) { .gantt__row { grid-template-columns: 8rem minmax(0, 1fr); column-gap: 14px; min-height: 38px; } }
.gantt__row--head { border-top: 0; min-height: 28px; }
.gantt__label { font-size: 0.8125rem; color: var(--text-dim); line-height: 1.2; }
.gantt__ticks, .gantt__track { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); }
.gantt__ticks span { font: 500 0.6875rem/1 var(--mono); color: var(--text-faint); }
.gantt__track { position: relative; height: 34px; background-image: repeating-linear-gradient(to right, var(--border) 0, var(--border) 1px, transparent 1px, transparent calc(100% / 12)); }
@media (min-width: 560px) { .gantt__track { height: 38px; } }
.gbar { grid-row: 1; align-self: center; height: 14px; border-radius: var(--r-chip); }
.gbar--crit { background: var(--accent-graphic); }
.gbar--std { background: var(--info); }
.gbar--base { align-self: end; margin-bottom: 4px; height: 4px; background: var(--text-faint); opacity: 0.7; }
.gs-1 { grid-column-start: 1; } .gs-2 { grid-column-start: 2; } .gs-3 { grid-column-start: 3; } .gs-4 { grid-column-start: 4; }
.gs-5 { grid-column-start: 5; } .gs-6 { grid-column-start: 6; } .gs-7 { grid-column-start: 7; } .gs-8 { grid-column-start: 8; }
.gs-9 { grid-column-start: 9; } .gs-10 { grid-column-start: 10; } .gs-11 { grid-column-start: 11; } .gs-12 { grid-column-start: 12; }
.gw-1 { grid-column-end: span 1; } .gw-2 { grid-column-end: span 2; } .gw-3 { grid-column-end: span 3; } .gw-4 { grid-column-end: span 4; }
.gw-5 { grid-column-end: span 5; } .gw-6 { grid-column-end: span 6; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: 14px 0 0; padding: 0; list-style: none; font-size: 0.8125rem; color: var(--text-dim); }
.legend li { display: inline-flex; align-items: center; gap: 8px; }
.swatch { display: inline-block; width: 22px; height: 10px; border-radius: var(--r-chip); }
.swatch--crit { background: var(--accent-graphic); }
.swatch--std { background: var(--info); }
.swatch--base { height: 4px; background: var(--text-faint); opacity: 0.7; }
.panel__cap { margin: 12px 0 0; font-size: 0.8125rem; color: var(--text-faint); max-width: none; }

/* ---------- two parts ---------- */
.part { gap: 14px; }
.part ul { margin: 0; padding-left: 1.1em; color: var(--text-dim); font-size: 1rem; }
.part li { margin-bottom: 6px; }
.keys { display: grid; gap: 10px; margin: 24px 0 0; padding: 0; list-style: none; }
@media (min-width: 720px) { .keys { grid-template-columns: repeat(3, 1fr); } }
.keys li { display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-card); font-size: 0.9375rem; color: var(--text-dim); }
.keys .chip { flex: none; margin-top: 1px; }

/* ---------- closing band ---------- */
.band { padding: 32px 22px; border-radius: var(--r-sheet); background: var(--surface); border: 1px solid var(--border); text-align: left; }
@media (min-width: 720px) { .band { padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 32px; } }
.band p { margin: 12px 0 0; color: var(--text-dim); }
.band .hero__cta { margin: 24px 0 0; flex: none; }
@media (min-width: 720px) { .band .hero__cta { margin: 0; } }

/* ---------- long text pages ---------- */
.doc { padding: 40px 0 72px; }
.doc__in { max-width: 46rem; }
.doc h1 { font-size: clamp(2rem, 1.2rem + 3.4vw, 3rem); margin-bottom: 18px; }
.doc h2 { font-size: 1.5rem; margin: 40px 0 12px; }
.doc h3 { font-size: 1.125rem; margin: 24px 0 8px; }
.doc li { margin-bottom: 6px; }
.notice { display: flex; gap: 12px; align-items: flex-start; margin: 0 0 28px; padding: 16px 18px; border: 1px solid var(--border); border-radius: var(--r-card); background: color-mix(in srgb, var(--caution) 12%, var(--surface)); }
.notice svg { width: 20px; height: 20px; flex: none; margin-top: 2px; fill: none; stroke: var(--caution-text); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.notice p { margin: 0; font-size: 1rem; }
.srclist { list-style: none; padding: 0; margin: 0 0 1em; display: grid; gap: 10px; }
.srclist li { padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-card); margin: 0; }
.srclist p { margin: 4px 0 0; font-size: 0.9375rem; color: var(--text-dim); }
.srclist .name { font-weight: 600; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 8px; padding: 0; list-style: none; }
.toc a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border-radius: var(--r-chip); background: var(--wash-2); text-decoration: none; font-weight: 500; font-size: 0.9375rem; }
.toc a:hover { background: var(--wash-3); }

/* ---------- 404 ---------- */
.lost { padding: 72px 0 96px; }
.lost h1 { margin-bottom: 16px; }

/* ---------- footer ---------- */
.foot { margin-top: auto; border-top: 1px solid var(--border); background: var(--surface-2); padding: 40px 0 28px; }
.foot__in { display: grid; gap: 32px; }
@media (min-width: 720px) { .foot__in { grid-template-columns: 1.2fr 1fr; } }
.foot__brand p { margin: 12px 0 0; font-size: 0.9375rem; }
.foot__cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.foot__h { font: 600 0.9375rem/1.2 var(--font); margin: 0 0 8px; }
.foot__cols a { display: inline-flex; align-items: center; min-height: 44px; font-size: 0.9375rem; }
.foot__legal { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); }
.foot__legal p { margin: 0; font-size: 0.875rem; max-width: none; }

/* ---------- user preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .btn, .icon-btn, .tag, .chip, .card, .panel { border: 1px solid CanvasText; }
  .gbar { forced-color-adjust: none; }
}