:root {
  --bg: #0d0a1f;
  --bg-2: #171230;
  --card: #1c1638;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f5f3ff;
  --muted: #b9b3d6;
  --accent: #ffc300;
  --on-accent: #1a1300;
  --radius: 16px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; }
[hidden] { display: none !important; }

.container { width: 100%; max-width: 1100px; margin-inline: auto; padding-inline: 16px; }
.muted { color: var(--muted); }

/* Encabezado y pie */
.site-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px;
  background: rgba(13, 10, 31, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 800; font-size: 1.15rem; text-decoration: none; }
.site-header nav { display: flex; gap: 16px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-header nav a:hover { color: var(--text); }

.site-footer {
  margin-top: 40px; padding: 24px 16px 40px;
  border-top: 1px solid var(--line);
  text-align: center; color: var(--muted); font-size: 0.85rem;
}
.site-footer nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 8px; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 11px 18px;
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--card); color: var(--text);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: filter 0.15s, transform 0.15s;
}
.btn:hover { filter: brightness(1.12); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.btn-wa { background: #25d366; color: #052e16; border-color: transparent; }
.btn-block { width: 100%; }

/* Portada */
.hero { padding-block: 40px 16px; text-align: center; }
.eyebrow {
  display: inline-block; margin: 0 0 14px; padding: 4px 12px;
  border-radius: 999px; background: rgba(255, 195, 0, 0.12);
  color: var(--accent); font-size: 0.8rem; font-weight: 600;
}
.hero h1 { margin: 0 0 12px; font-size: clamp(1.9rem, 6vw, 3.2rem); line-height: 1.1; text-wrap: balance; }
.hero h1 span { color: var(--accent); }
.lead { max-width: 560px; margin: 0 auto 22px; color: var(--muted); font-size: 1.05rem; }
.steps {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 10px 18px;
  margin: 24px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 0.9rem;
}
.steps li { display: flex; align-items: center; gap: 6px; }
.steps b {
  display: grid; place-items: center; width: 24px; height: 24px;
  border-radius: 50%; background: var(--card); color: var(--accent); font-size: 0.8rem;
}

/* Galería */
.section-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 24px 0 16px; }
.section-head h2 { margin: 0; }
.chips { display: flex; gap: 8px; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
.chip {
  flex: none; padding: 8px 14px;
  border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--muted);
  font: inherit; font-size: 0.9rem; cursor: pointer;
}
.chip[aria-selected="true"] { background: var(--accent); color: var(--on-accent); border-color: transparent; font-weight: 600; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (min-width: 720px) { .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; } }
@media (min-width: 1000px) { .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

.card {
  display: block; overflow: hidden; text-decoration: none;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(255, 195, 0, 0.45); }
.thumb { position: relative; aspect-ratio: 3 / 4; background: #090716; }
.thumb canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.badge {
  position: absolute; top: 8px; left: 8px; max-width: calc(100% - 16px);
  padding: 3px 8px; border-radius: 999px;
  background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(4px);
  font-size: 0.7rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-body { padding: 10px 12px 14px; }
.card-body h3 { margin: 0 0 2px; font-size: 0.98rem; line-height: 1.3; }
.card-body p { margin: 0; color: var(--muted); font-size: 0.82rem; }

/* Espacios publicitarios: reservan altura para evitar saltos de diseño */
.ad-slot {
  display: grid; place-items: center; min-height: 100px; margin-block: 24px;
  border: 1px dashed var(--line); border-radius: 12px;
  color: rgba(255, 255, 255, 0.25); font-size: 0.75rem;
}
.ad-slot:empty::before { content: "Publicidad"; }

/* Textos */
.prose { max-width: 760px; padding-block: 16px 24px; }
.prose h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); line-height: 1.15; }
.prose h2 { margin-top: 32px; font-size: 1.35rem; }
.prose p, .prose li { color: var(--muted); }
.prose a { color: var(--accent); }
details { margin-bottom: 8px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-2); }
summary { font-weight: 600; cursor: pointer; }
details p { margin: 8px 0 0; }

/* Escena con mensaje */
.scene { position: relative; overflow: hidden; background: #090716; container-type: inline-size; }
.scene canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center;
  padding: 9% 7%; text-align: center; pointer-events: none;
  opacity: 0; transform: translateY(12px);
  transition: opacity 1.2s ease, transform 1.2s ease;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.7), 0 0 2px rgba(0, 0, 0, 0.8);
}
.overlay.show { opacity: 1; transform: none; }
.overlay.pos-top { justify-content: flex-start; }
.overlay.pos-center { justify-content: center; }
.overlay p { margin: 0; overflow-wrap: anywhere; }
.ov-to {
  color: var(--accent); font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase;
  font-size: clamp(0.8rem, 4cqi, 1.3rem);
}
.ov-msg {
  margin-block: 0.15em !important;
  font-family: "Dancing Script", "Segoe Script", cursive; font-weight: 700;
  font-size: clamp(1.5rem, 9cqi, 3.6rem); line-height: 1.15; color: #fff; text-wrap: balance;
}
.ov-from { font-family: "Dancing Script", "Segoe Script", cursive; color: #ffe8a3; font-size: clamp(1.05rem, 5.5cqi, 2rem); }

/* Página para crear */
.create { padding-block: 16px 0; }
.crumbs a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.create-layout { display: grid; gap: 24px; margin-top: 12px; }
@media (min-width: 860px) {
  .create-layout { grid-template-columns: minmax(0, 360px) minmax(0, 1fr); align-items: start; gap: 40px; }
  .preview-col { position: sticky; top: 80px; }
}
.phone {
  max-width: 250px; margin-inline: auto; padding: 8px;
  border: 1px solid var(--line); border-radius: 30px; background: #000;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
@media (min-width: 860px) { .phone { max-width: 340px; } }
.phone .scene { aspect-ratio: 9 / 16; border-radius: 22px; }
.form-col h1 { margin: 0 0 4px; font-size: clamp(1.5rem, 4vw, 2.1rem); line-height: 1.15; }
.form-col > .muted { margin-top: 0; }
.form { margin-top: 20px; }
.form label { display: block; margin-bottom: 14px; font-size: 0.92rem; font-weight: 600; }
.form small { display: block; margin-top: 4px; color: var(--muted); font-weight: 400; text-align: right; }
.form input, .form textarea {
  display: block; width: 100%; margin-top: 6px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg-2); color: var(--text);
  font: inherit; font-size: 16px; resize: vertical;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.result {
  margin-top: 16px; padding: 16px;
  border: 1px solid rgba(37, 211, 102, 0.35); border-radius: var(--radius);
  background: rgba(37, 211, 102, 0.08);
}
.result .ok { margin: 0 0 10px; font-weight: 700; }
.link-row { display: flex; gap: 8px; }
.link-row input {
  flex: 1; min-width: 0; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); color: var(--muted); font: inherit; font-size: 14px;
}
.share-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.share-row .btn { flex: 1 1 auto; }

/* Página que recibe la sorpresa */
.scene-full { height: 100vh; height: 100svh; }
.gate {
  position: absolute; inset: 0; z-index: 5;
  display: grid; place-items: center; padding: 24px;
  background: radial-gradient(circle at 50% 40%, #2a1f55, #0d0a1f 70%);
  transition: opacity 0.6s ease;
}
.gate.hide { opacity: 0; pointer-events: none; }
.gate-card { text-align: center; }
.envelope { font-size: 4.5rem; line-height: 1; animation: bob 2.2s ease-in-out infinite; }
.gate-to { margin: 18px 0 4px; font-size: clamp(1.6rem, 7vw, 2.4rem); font-weight: 800; }
.gate-from { margin: 0 0 22px; color: var(--muted); }
.gate .btn { min-width: 180px; font-size: 1.05rem; }
@keyframes bob { 50% { transform: translateY(-10px) rotate(-4deg); } }

.replay, .hint {
  position: absolute; z-index: 4; bottom: 16px;
  padding: 8px 14px; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 999px;
  background: rgba(0, 0, 0, 0.45); backdrop-filter: blur(6px);
  color: #fff; font: inherit; font-size: 0.85rem; text-decoration: none; cursor: pointer;
}
.replay { right: 16px; }
.hint { left: 16px; }
.after { padding-top: 32px; text-align: center; }
.after h2 { margin: 0 0 14px; font-size: clamp(1.3rem, 4vw, 1.8rem); }
.after h3 { margin: 8px 0 16px; text-align: left; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .envelope { animation: none; }
}