/* Layout and shared components. Colours come from tokens.css only. */

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100svh;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.screen {
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 24px;
  min-height: 100svh;
  isolation: isolate;
}

.imprint {
  position: absolute;
  left: 0; right: 0;
  bottom: max(20px, env(safe-area-inset-bottom));
  margin: 0;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--faint);
  z-index: 3;
}

/* ---- form ---------------------------------------------------------------- */

.form { display: grid; gap: 12px; text-align: left; }
.field { display: grid; gap: 6px; }

.field label {
  font-size: 12px;
  letter-spacing: .045em;
  text-transform: uppercase;
  color: var(--muted);
}

.field input {
  appearance: none;
  width: 100%;
  background: var(--field);
  color: var(--field-ink);
  border: 1px solid var(--field-line);
  border-radius: var(--radius);
  padding: 13px 14px;
  font: inherit;
  /* 16px exactly: anything smaller makes iOS Safari zoom the page on focus. */
  font-size: 16px;
  transition: border-color .16s ease, box-shadow .16s ease;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3.5px color-mix(in srgb, var(--accent) 24%, transparent);
}

.submit {
  appearance: none;
  border: 0;
  width: 100%;
  background: var(--ink);
  color: var(--ground);
  font: inherit;
  font-size: 16px;
  font-weight: 500;
  padding: 14px;
  border-radius: var(--radius);
  cursor: pointer;
  margin-top: 4px;
  transition: opacity .16s ease, transform .16s ease;
}
.submit:hover { opacity: .88; }
.submit:active { transform: scale(.993); }
.submit:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.hint { font-size: 13px; color: var(--faint); margin: 18px 0 0; }

.flash {
  margin: 0 0 18px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  text-align: left;
}
.flash--error {
  color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
  background: color-mix(in srgb, var(--danger) 8%, transparent);
}
.flash--muted { color: var(--muted); border: 1px solid var(--line); }

/* ---- footprints ---------------------------------------------------------- */

.prints { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.prints svg {
  position: absolute;
  overflow: visible;
  --print-alpha: var(--print-alpha-base);
}
.prints .sole { fill: var(--print); opacity: 0; }

.walking .sole {
  animation-name: step;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

@keyframes step {
  0%   { opacity: 0; }
  4%   { opacity: var(--print-alpha); }
  30%  { opacity: var(--print-alpha); }
  56%  { opacity: 0; }
  100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .walking .sole { animation: none; opacity: calc(var(--print-alpha) * .75); }
}

/* ---- home ---------------------------------------------------------------- */

.panel {
  position: relative;
  z-index: 2;
  width: min(460px, 100%);
  padding-bottom: 8vh;
}

.eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.panel h1 {
  font-size: clamp(26px, 5vw, 32px);
  font-weight: 550;
  letter-spacing: -.02em;
  text-wrap: balance;
  margin: 0 0 26px;
}

.facts { display: grid; gap: 10px; margin: 0 0 26px; }
.facts > div { display: flex; gap: 12px; justify-content: space-between; align-items: baseline; }
.facts dt { font-size: 13px; color: var(--muted); }
.facts dd { margin: 0; font-size: 14.5px; text-align: right; }

.note { font-size: 14px; color: var(--muted); margin: 0 0 30px; }

.controls { display: grid; gap: 16px; border-top: 1px solid var(--line); padding-top: 24px; }
.controls h2 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

.segmented {
  display: inline-flex;
  background: color-mix(in srgb, var(--ink) 5%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2px;
  gap: 2px;
  width: fit-content;
}
.segmented button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.segmented button[aria-pressed="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .12);
}
.segmented button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.logout {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  padding: 11px 20px;
  border-radius: var(--radius);
  cursor: pointer;
  width: fit-content;
}
.logout:hover { border-color: var(--muted); }
.logout:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.version { font-size: 12px; color: var(--faint); margin: 26px 0 0; }