:root {
  --ink: #1a1d21;
  --muted: #5d646d;
  --line: #d5d9de;
  --bg: #ffffff;
  --panel: #f7f8f9;
  --accent: #0b5fa5;
  --error: #a3241c;
  --ok: #1d6b3a;
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  max-width: 60rem;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

h1 { font-size: 1.5rem; margin: 0 0 .5rem; }
.lede { color: var(--muted); margin: 0 0 1.5rem; max-width: 48rem; }

fieldset, details {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1rem 1.25rem 1.25rem;
  margin: 0 0 1.25rem;
}

legend, summary {
  font-weight: 600;
  padding: 0 .4rem;
}

summary { cursor: pointer; padding: 0; }
.details-body { padding-top: 1rem; }

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.field {
  flex: 1 1 16rem;
  margin-bottom: .9rem;
}

.field.narrow { flex: 0 1 10rem; }

label, .label {
  display: block;
  font-weight: 500;
  margin-bottom: .3rem;
}

label.check {
  font-weight: 400;
  margin: .2rem 0;
}

label.check input { margin-right: .4rem; }

input[type=text], input[type=email], textarea {
  width: 100%;
  padding: .45rem .55rem;
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 3px;
}

input[type=file] {
  width: 100%;
  font: inherit;
  padding: .3rem 0;
}

textarea { resize: vertical; }

input:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.hint {
  color: var(--muted);
  font-size: .85rem;
  margin: .3rem 0 0;
}

.hint.block {
  background: var(--panel);
  border-radius: 3px;
  padding: .7rem .8rem;
  margin: 0 0 1rem;
}

.req { color: var(--error); }

.actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

button {
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 3px;
  padding: .6rem 1.2rem;
  cursor: pointer;
}

button:disabled { background: var(--muted); cursor: progress; }

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

#feedback {
  border: 1px solid var(--line);
  border-left: 4px solid var(--muted);
  border-radius: 3px;
  padding: .8rem 1rem;
  margin-bottom: 1.25rem;
}

#feedback.error { border-left-color: var(--error); }
#feedback.ok { border-left-color: var(--ok); }
#feedback p { margin: 0 0 .4rem; font-weight: 600; }
#feedback ul { margin: 0; padding-left: 1.2rem; }

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e6e8ea;
    --muted: #9aa2ab;
    --line: #3a4048;
    --bg: #16191d;
    --panel: #1e2228;
    --accent: #4b9fe1;
    --error: #f08279;
    --ok: #6cc48b;
  }
  button { color: #10141a; }
}

.logos {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  /* Both logos are dark ink on a transparent ground, so they keep their own
     light backing rather than disappearing in the dark theme. */
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: .9rem 1.25rem;
  margin-bottom: 1.75rem;
}

.logos img { display: block; }
.logo-anabrid { height: 26px; }
.logo-dlr { height: 34px; }

#thanks h2 {
  font-size: 1.2rem;
  margin: 0 0 .5rem;
}

#thanks {
  border: 1px solid var(--line);
  border-left: 4px solid var(--ok);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
}

#thanks p { margin: 0; max-width: 44rem; }