:root {
  --bg: #000;
  --fg: #fff;
  --accent: #c4122f;
  --muted: #b3b3b3;
  --line: #2a2a2a;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.wrap {
  width: min(36rem, 100%);
  margin: 0 auto;
  padding: 1.5rem 1.1rem 3.5rem;
}

.wrap.wide {
  width: min(68rem, 100%);
}

.landing {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
}

.landing .feedback {
  margin: 0;
}

.landing-links {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin: 0;
}

.landing-links a {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mark {
  display: block;
  width: min(13rem, 72vw);
  height: auto;
  margin: 0 0 1.25rem;
  filter: invert(1);
}

.rule {
  height: 2px;
  background: var(--accent);
  border: 0;
  margin: 0 0 1.5rem;
}

h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

body.predictor {
  font-size: 1.15rem;
  font-weight: 700;
}

body.predictor h1,
body.predictor .display,
body.predictor .home-link {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.15;
}

body.predictor .mark {
  width: min(16rem, 80vw);
}

p,
label,
li {
  margin: 0 0 0.85rem;
}

.muted {
  color: var(--muted);
}

a {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

nav {
  margin: 1.5rem 0 0;
  font-size: 0.95rem;
}

.home-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
}

.home-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.eye {
  width: 3.2rem;
  height: 2rem;
  flex: 0 0 auto;
  color: var(--fg);
}

.words {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0.6rem 0 1rem;
}

.words input {
  flex: 1 1 0;
  min-width: 0;
  margin: 0;
  text-align: center;
  text-transform: lowercase;
  font-weight: 800;
  font-size: 1.05rem;
}

.dash {
  color: var(--accent);
  font-weight: 800;
}

.grant {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: clamp(1.15rem, 4vw, 1.6rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: none;
  margin: 0.4rem 0 1.2rem;
  overflow-wrap: anywhere;
}

.drop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.8rem 0 0.4rem;
  padding: 1rem 1rem;
  border: 2px solid var(--fg);
  cursor: pointer;
  text-transform: uppercase;
}

.drop.over {
  border-color: var(--accent);
}

.drop input {
  display: none;
}

.arrow {
  width: 1.6rem;
  height: 1.6rem;
  color: var(--accent);
}

.fine {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
}

label {
  display: block;
  font-size: 0.92rem;
}

input[type="text"],
input:not([type]),
input[type="file"] {
  display: block;
  width: 100%;
  margin: 0.35rem 0 1rem;
  padding: 0.8rem 0.75rem;
  color: var(--fg);
  background: #111;
  border: 1px solid var(--line);
  border-radius: 0;
  font: inherit;
}

input[type="file"] {
  padding: 0.55rem;
}

.ack {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  margin: 1rem 0 1.25rem;
}

.ack input {
  width: auto;
  margin: 0.3rem 0 0;
  accent-color: var(--accent);
  flex: 0 0 auto;
}

button {
  display: block;
  width: 100%;
  margin: 0.5rem 0 1rem;
  padding: 0.85rem 1rem;
  border: 0;
  background: var(--accent);
  color: var(--fg);
  font: inherit;
  font-weight: 600;
  letter-spacing: 0.02em;
}

button:disabled {
  opacity: 0.4;
}

.err {
  color: var(--accent);
  min-height: 1.3em;
}

.ident {
  display: block;
  margin: 0 0 1.25rem;
  padding: 0.9rem 0.75rem;
  font-size: 1.05rem;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  letter-spacing: 0.02em;
  background: #111;
  border: 1px solid var(--line);
  user-select: all;
  overflow-wrap: anywhere;
}

.coord {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.preview,
.feedback {
  display: block;
  width: 100%;
  height: auto;
  margin: 0.75rem 0 1rem;
  background: #111;
}

ul.protocol {
  padding-left: 1.15rem;
}

ul.protocol li {
  margin-bottom: 0.55rem;
}

[hidden] {
  display: none !important;
}

@media (min-width: 640px) {
  .wrap {
    padding-top: 2.5rem;
  }

  h1 {
    font-size: 1.6rem;
  }
}

@media (min-width: 800px) {
  .landing {
    grid-template-columns: minmax(0, 1.5fr) minmax(12rem, 0.7fr);
    gap: 2.75rem;
  }
}