:root {
  --ground: #0f1115;
  --panel: #1c212b;
  --panel-soft: #171c25;
  --line: #2b3240;
  --text: #f4f6fa;
  --dim: #98a1b0;
  --accent: #3d78f7;
  --accent-soft: rgba(61, 120, 247, .14);
  --bad: #f2663d;
  --good: #4bb87c;
  --radius: 12px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

main { max-width: 780px; margin: 0 auto; padding: 40px 20px 96px; }

h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 8px; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin: 0 0 14px; }
p.sub { color: var(--dim); margin: 0 0 32px; }

nav.top {
  display: flex; align-items: center; gap: 14px;
  max-width: 780px; margin: 0 auto; padding: 20px;
  font-size: .9rem;
}
nav.top .brand { font-weight: 600; color: var(--text); text-decoration: none; }
nav.top .spacer { flex: 1; }
nav.top a:not(.brand) { color: var(--dim); text-decoration: none; }
nav.top a:not(.brand):hover { color: var(--text); }

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
}

label { display: block; font-size: .82rem; color: var(--dim); margin-bottom: 6px; }

input[type=text], input[type=email], select {
  width: 100%; padding: 10px 12px;
  background: var(--ground); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px;
  font: inherit; font-size: 1rem;
}
input:focus-visible, select:focus-visible, button:focus-visible, #drop:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > div { flex: 1 1 200px; }
.field { margin-bottom: 14px; }

button {
  padding: 11px 18px; border: 0; border-radius: 8px;
  background: var(--accent); color: #fff;
  font: inherit; font-size: .95rem; font-weight: 600;
  cursor: pointer;
}
button:hover:not(:disabled) { filter: brightness(1.08); }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--text); font-weight: 500; }
button.ghost:hover:not(:disabled) { background: var(--panel-soft); filter: none; }
button.small { padding: 7px 12px; font-size: .82rem; }
button:disabled { opacity: .5; cursor: default; }

.msg { margin-top: 14px; font-size: .88rem; color: var(--dim); }
.msg:empty { margin-top: 0; }
.msg.bad { color: var(--bad); }
.msg.good { color: var(--good); }

.hidden { display: none !important; }
.hint { color: var(--dim); font-size: .82rem; margin: 12px 0 0; }
code { background: var(--ground); padding: 1px 5px; border-radius: 4px; font-size: .85em; }

table { width: 100%; border-collapse: collapse; font-size: .8rem; }
th, td {
  text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 170px;
}
th { color: var(--dim); font-weight: 500; }
.wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 560px) {
  main { padding: 24px 16px 72px; }
  h1 { font-size: 1.45rem; }
  section { padding: 18px 16px; }
  button { width: 100%; }
  button.small, .deck button { width: auto; }
}