:root {
  --bg: #03040d;
  --card: rgba(8, 12, 34, 0.78);
  --line: rgba(90, 140, 255, 0.28);
  --blue: #1f6bff;
  --cyan: #35d0ff;
  --text: #f4f6ff;
  --muted: #a9b4d6;
  --error: #ff8a8a;
  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans: 'Montserrat', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  background:
    radial-gradient(60% 34% at 50% 0%, rgba(31, 107, 255, 0.42), transparent 70%),
    radial-gradient(45% 30% at 0% 55%, rgba(31, 107, 255, 0.22), transparent 70%),
    radial-gradient(45% 30% at 100% 75%, rgba(53, 208, 255, 0.14), transparent 70%),
    var(--bg);
  background-attachment: fixed;
}

[hidden] { display: none !important; }

h1, h2, h3, .date span, .stat b { font-variant-numeric: lining-nums; font-feature-settings: 'lnum'; }

.wrap {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 36px 16px 48px;
}

/* ---------- Cabecera ---------- */
.hero { text-align: center; margin-bottom: 28px; }

.eyebrow, .date {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
}
.eyebrow::before, .eyebrow::after, .date::before, .date::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--cyan);
  opacity: 0.8;
}
.eyebrow span {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 6px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(64px, 22vw, 104px);
  line-height: 1;
  letter-spacing: -0.03em;
  text-shadow: 0 0 34px rgba(31, 107, 255, 0.75);
}
h1 i { font-style: normal; color: var(--blue); margin: 0 0.02em; }

.date span {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(38px, 12vw, 54px);
  line-height: 1.1;
}

.meta {
  margin: 4px 0 0;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}
.meta strong { font-weight: 700; }

.tag {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}
.sub {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---------- Tarjetas ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 18px;
  box-shadow: 0 0 60px rgba(31, 107, 255, 0.18);
  backdrop-filter: blur(8px);
}
.center { text-align: center; }

.note { text-align: center; color: var(--muted); }

.lead { margin: 0 0 18px; color: var(--muted); }

.invited {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(31, 107, 255, 0.16);
  border: 1px solid var(--line);
  font-size: 14px;
  text-align: center;
}

/* ---------- Formulario ---------- */
label, legend {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
label { margin-bottom: 16px; }
label small { letter-spacing: 0.05em; text-transform: none; font-weight: 400; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

input:not([type='radio']), textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 13px 12px;
  font: inherit;
  font-size: 16px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { resize: vertical; }
input::placeholder, textarea::placeholder { color: rgba(169, 180, 214, 0.55); }
input:not([type='radio']):focus, textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 208, 255, 0.2);
}

fieldset { border: 0; padding: 0; margin: 0 0 16px; min-width: 0; }
legend { padding: 0; margin-bottom: 8px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { margin: 0; letter-spacing: 0.04em; text-transform: none; cursor: pointer; }
.chips input { position: absolute; opacity: 0; pointer-events: none; }
.chips span {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  transition: background 0.15s, border-color 0.15s;
}
.chips input:checked + span {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 0 18px rgba(31, 107, 255, 0.6);
}
.chips input:focus-visible + span { outline: 2px solid var(--cyan); outline-offset: 2px; }
#trago-otro { margin-top: 10px; }

.error {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--error);
  background: rgba(255, 90, 90, 0.1);
  border: 1px solid rgba(255, 138, 138, 0.4);
  font-size: 14px;
}

.btn {
  display: block;
  width: 100%;
  padding: 15px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: center;
  text-decoration: none;
  color: #fff;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 0 26px rgba(31, 107, 255, 0.55);
  transition: transform 0.1s, opacity 0.15s;
}
.btn:active { transform: scale(0.985); }
.btn:disabled { opacity: 0.6; cursor: wait; }
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.btn.ghost { background: transparent; border-color: var(--line); box-shadow: none; margin-top: 10px; }

/* ---------- Confirmación ---------- */
.check {
  width: 54px;
  height: 54px;
  margin: 0 auto 10px;
  display: grid;
  place-items: center;
  font-size: 26px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 24px rgba(53, 208, 255, 0.45);
}
h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.15;
}
.card p { margin: 0 0 12px; }
.card .check { margin: 0 auto 12px; }
.card.center > p:not(.check) { color: var(--muted); }

.share {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.share h3 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 22px;
}
.share p { color: var(--muted); font-size: 15px; }
.share input { margin: 0 0 12px; font-size: 14px; text-align: center; }

/* ---------- Pie ---------- */
.foot { margin-top: 32px; text-align: center; }
.shout {
  margin: 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.whisper { margin: 2px 0 0; font-family: var(--serif); font-style: italic; font-size: 18px; color: var(--muted); }

@media (max-width: 360px) {
  .row { grid-template-columns: 1fr; gap: 0; }
}