:root {
  --bg: #0a0a0c;
  --panel: #131316;
  --panel-2: #1b1b20;
  --line: #2e2e35;
  --text: #f2eff0;
  --muted: #9d959a;
  --accent: #e0293c;
  --accent-ink: #ffffff;
  --danger: #ff7a6b;
  --ok: #4ec98a;
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f2f3;
    --panel: #ffffff;
    --panel-2: #f7f3f4;
    --line: #e0d8da;
    --text: #14090b;
    --muted: #6a5c5f;
    --accent: #c81d2e;
    --accent-ink: #ffffff;
    --danger: #b91c1c;
    --ok: #15803d;
  }
}

* { box-sizing: border-box; }

/* Author display rules (.field, .card…) outrank the UA stylesheet's
   [hidden] { display: none }, so hidden elements would otherwise still show. */
[hidden] { display: none !important; }

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

.wrap { width: min(860px, calc(100% - 2rem)); margin: 0 auto; }

.masthead {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 20%, transparent), transparent);
  margin-bottom: 2rem;
  border-bottom-color: var(--accent);
}
.masthead { text-align: center; }
.masthead h1 { margin: 0 0 .5rem; font-size: clamp(1.6rem, 4vw, 2.2rem); letter-spacing: -.02em; }
/* Sized to sit on one line at full container width; still wraps on narrow screens. */
.lede { margin: 0; color: var(--muted); font-size: .95rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  margin-bottom: 1.25rem;
}
.card h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--accent);
  text-align: center;
}
.section-note { margin: -.5rem 0 1rem; color: var(--muted); font-size: .9rem; }

.field { display: block; margin-bottom: 1rem; }
.field:last-child { margin-bottom: 0; }
.label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .35rem; }
.label b { color: var(--accent); font-weight: 700; }
.hint { display: block; margin-top: .3rem; color: var(--muted); font-size: .82rem; }

input[type=text], input[type=email], input[type=date], input[type=time], input[type=url], select, textarea {
  width: 100%;
  padding: .6rem .7rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  font-size: .95rem;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
input.invalid, select.invalid, textarea.invalid { border-color: var(--danger); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: 0 1rem; }
@media (max-width: 620px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.checks { display: flex; flex-wrap: wrap; gap: .5rem .9rem; }
.checks label {
  display: flex; align-items: center; gap: .4rem;
  font-size: .9rem; font-weight: 400;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .35rem .8rem;
  cursor: pointer;
}
.checks input { accent-color: var(--accent); margin: 0; }
.checks.invalid label { border-color: var(--danger); }

.channel {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: .8rem;
  background: var(--panel-2);
  position: relative;
}
.channel .grid-2 { gap: 0 1rem; }
.remove-channel {
  position: absolute; top: .6rem; right: .6rem;
  background: none; border: none; color: var(--muted);
  font-size: 1.1rem; cursor: pointer; line-height: 1; padding: .2rem .4rem;
}
.remove-channel:hover { color: var(--danger); }

.btn, .btn-ghost {
  font: inherit; font-weight: 600; cursor: pointer;
  border-radius: 8px; padding: .65rem 1.2rem;
  transition: opacity .15s, background .15s;
}
.btn {
  background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent);
}
.btn:hover:not(:disabled) { opacity: .88; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-ghost {
  background: transparent; color: var(--accent);
  border: 1px dashed var(--line);
}
.btn-ghost:hover { border-color: var(--accent); }

.submit-row {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  margin-bottom: 1rem;
}

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.status { margin: 0 0 2rem; font-size: .95rem; min-height: 1.4em; }
.status.error { color: var(--danger); }
.status.ok { color: var(--ok); }

.done {
  background: var(--panel);
  border: 1px solid var(--ok);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}
.done h2 { margin-top: 0; color: var(--ok); }
.done p { color: var(--muted); }

.foot { padding: 1.5rem 0 3rem; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); text-align: center; }