/* === ARI 1 · estilos compartidos para páginas de retos === */
:root {
  --bg:#fff; --bg-soft:#f8f6fb; --bg-alt:#f1edf7;
  --deep:#0a0014; --purple:#3d1670; --purple-dark:#2a0e4e; --lavender:#bf99f2; --lavender-bg:#efe5fc;
  --ink:#0a0014; --ink-soft:#2d1b46; --ink-mute:#5b4276;
  --line:#e4dcef; --line-strong:#cfc4dd;
  --green:#0e7a36; --green-bg:#e8f7ed;
  --warn:#8a5a00; --warn-bg:#fdf3da;
  --red:#a01818; --red-bg:#fdecec;
}
* { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { font-family:'Poppins',-apple-system,sans-serif; background:var(--bg); color:var(--ink); line-height:1.55; -webkit-font-smoothing:antialiased; overflow-x:hidden; }
.container { max-width:1240px; margin:0 auto; padding:0 32px; }
.container-narrow { max-width:920px; margin:0 auto; padding:0 32px; }
.serif { font-family:'Instrument Serif',Georgia,serif; font-weight:400; font-style:italic; letter-spacing:-0.02em; }

/* Nav */
nav { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.92); backdrop-filter:saturate(180%) blur(20px); border-bottom:1px solid transparent; padding:14px 0; transition:all .25s; }
nav.scrolled { border-bottom-color:var(--line); background:rgba(255,255,255,.96); }
nav .container { display:flex; justify-content:space-between; align-items:center; }
.logo { display:flex; align-items:center; gap:14px; text-decoration:none; }
.logo img { height:30px; }
.logo-text { font-weight:700; font-size:17px; color:var(--deep); letter-spacing:-.4px; display:flex; align-items:center; gap:12px; }
.logo-text::after { content:''; width:1px; height:18px; background:var(--line-strong); }
.logo-tag { font-size:13px; font-weight:500; color:var(--ink-mute); }
.nav-actions { display:flex; gap:24px; align-items:center; }
.nav-link { color:var(--deep); font-weight:500; text-decoration:none; font-size:14px; }
.nav-link:hover { color:var(--purple); }
.cta-nav { background:var(--deep); color:#fff; padding:10px 18px; border-radius:100px; text-decoration:none; font-weight:600; font-size:14px; }
.cta-nav:hover { background:var(--purple); }

/* Breadcrumb */
.breadcrumb { padding:18px 0 0; }
.breadcrumb a { color:var(--ink-mute); text-decoration:none; font-size:13px; }
.breadcrumb a:hover { color:var(--purple); }
.breadcrumb .sep { margin:0 8px; color:var(--ink-mute); opacity:.5; }
.breadcrumb .actual { color:var(--deep); font-weight:600; }

/* Hero reto */
header.reto-hero { position:relative; padding:48px 0 64px; overflow:hidden; }
header.reto-hero .container { position:relative; z-index:2; }
.reto-mesh { position:absolute; inset:0; pointer-events:none; overflow:hidden; }
.reto-mesh::before, .reto-mesh::after { content:''; position:absolute; border-radius:50%; filter:blur(120px); }
.reto-mesh::before { width:700px; height:700px; background:var(--lavender); top:-300px; left:-150px; opacity:.28; }
.reto-mesh::after { width:600px; height:600px; background:var(--purple); bottom:-250px; right:-100px; opacity:.14; }

.reto-num-tag { display:inline-flex; align-items:center; gap:10px; padding:6px 14px 6px 6px; border:1px solid var(--line-strong); border-radius:100px; background:rgba(255,255,255,.9); font-size:13px; font-weight:600; color:var(--deep); margin-bottom:24px; }
.reto-num-tag .num { background:var(--deep); color:#fff; padding:4px 10px; border-radius:100px; font-size:11px; font-weight:700; letter-spacing:1px; }
.reto-num-tag .estado { font-size:11px; font-weight:700; padding:3px 10px; border-radius:100px; letter-spacing:.6px; text-transform:uppercase; }
.reto-num-tag .estado.disponible { background:var(--green-bg); color:var(--green); }
.reto-num-tag .estado.proximo { background:var(--warn-bg); color:var(--warn); }
.reto-num-tag .estado.disponible .dot { display:inline-block; width:6px; height:6px; border-radius:50%; background:var(--green); margin-right:6px; animation:dotPulse 2s ease-in-out infinite; }
@keyframes dotPulse { 0%,100% { opacity:1; } 50% { opacity:.5; } }

header.reto-hero h1 { font-size:clamp(40px,5.8vw,68px); line-height:1.05; letter-spacing:-2px; color:var(--deep); font-weight:600; margin-bottom:22px; max-width:920px; }
header.reto-hero h1 .serif { color:var(--purple); }
header.reto-hero .sub { font-size:clamp(17px,1.5vw,20px); color:var(--ink-soft); max-width:720px; margin-bottom:28px; line-height:1.55; }

.reto-cta-row { display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-bottom:36px; }
.btn-primary { display:inline-flex; align-items:center; gap:8px; background:var(--deep); color:#fff; padding:14px 24px; border-radius:100px; text-decoration:none; font-weight:600; font-size:15px; transition:all .2s; }
.btn-primary:hover { background:var(--purple); transform:translateY(-2px); }
.btn-secondary { display:inline-flex; align-items:center; gap:8px; background:#fff; color:var(--deep); padding:14px 24px; border-radius:100px; text-decoration:none; font-weight:600; font-size:15px; border:1px solid var(--line-strong); transition:all .2s; }
.btn-secondary:hover { border-color:var(--deep); transform:translateY(-2px); }

.reto-mini-stats { display:grid; grid-template-columns:repeat(4,1fr); gap:0; max-width:720px; background:#fff; border:1px solid var(--line); border-radius:14px; overflow:hidden; box-shadow:0 12px 32px -16px rgba(35,6,63,.10); }
.reto-mini-stats > div { padding:16px 14px; text-align:center; border-right:1px solid var(--line); }
.reto-mini-stats > div:last-child { border-right:none; }
.reto-mini-stats .num { font-size:22px; font-weight:700; color:var(--deep); letter-spacing:-.8px; line-height:1; margin-bottom:4px; }
.reto-mini-stats .num .small { font-size:14px; color:var(--ink-mute); font-weight:500; }
.reto-mini-stats .label { font-size:11px; color:var(--ink-soft); font-weight:500; }
@media (max-width:640px) { .reto-mini-stats { grid-template-columns:repeat(2,1fr); } .reto-mini-stats > div:nth-child(2) { border-right:none; } .reto-mini-stats > div:nth-child(1), .reto-mini-stats > div:nth-child(2) { border-bottom:1px solid var(--line); } }

/* Sections */
section { padding:80px 0; position:relative; }
section.alt { background:var(--bg-soft); }
section.dark { background:var(--deep); color:#fff; }
.section-eyebrow { display:inline-flex; align-items:center; gap:10px; font-size:12px; font-weight:700; color:var(--purple); text-transform:uppercase; letter-spacing:1.6px; margin-bottom:18px; }
.section-eyebrow .num { font-family:'Instrument Serif',serif; font-style:italic; color:var(--purple); font-size:18px; opacity:.7; }
section.dark .section-eyebrow { color:var(--lavender); }
h2 { font-size:clamp(30px,3.8vw,44px); line-height:1.1; letter-spacing:-1.2px; color:var(--deep); font-weight:600; margin-bottom:20px; max-width:880px; }
h2 .serif { color:var(--purple); }
section.dark h2 { color:#fff; }
section.dark h2 .serif { color:var(--lavender); }
.lead { font-size:clamp(15px,1.3vw,17px); color:var(--ink-soft); max-width:760px; margin-bottom:36px; line-height:1.6; }
section.dark .lead { color:rgba(255,255,255,.85); }

/* Outputs grid (qué se logra) */
.outputs-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:32px; }
.output-card { background:#fff; border:1px solid var(--line); border-radius:18px; padding:30px; }
.output-card.dark { background:var(--deep); color:#fff; border-color:var(--deep); position:relative; overflow:hidden; }
.output-card.dark::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; background:radial-gradient(circle, rgba(191,153,242,.18) 0%, transparent 70%); border-radius:50%; }
.output-card-head { display:flex; align-items:center; gap:14px; margin-bottom:16px; position:relative; z-index:1; }
.output-card-icon { width:44px; height:44px; border-radius:12px; background:var(--lavender-bg); display:flex; align-items:center; justify-content:center; font-size:20px; flex-shrink:0; }
.output-card.dark .output-card-icon { background:rgba(191,153,242,.16); }
.output-card-head h3 { font-size:19px; color:var(--deep); margin:0; }
.output-card.dark .output-card-head h3 { color:#fff; }
.output-card-head h3 .serif { color:var(--purple); }
.output-card.dark .output-card-head h3 .serif { color:var(--lavender); }
.output-card .desc { color:var(--ink-soft); font-size:14px; margin-bottom:18px; position:relative; z-index:1; }
.output-card.dark .desc { color:rgba(255,255,255,.85); }
.output-list { list-style:none; position:relative; z-index:1; }
.output-list li { display:flex; align-items:flex-start; gap:10px; padding:9px 0; font-size:14px; line-height:1.5; color:var(--ink); border-bottom:1px solid var(--line); }
.output-card.dark .output-list li { color:rgba(255,255,255,.94); border-color:rgba(255,255,255,.1); }
.output-list li:last-child { border-bottom:none; }
.output-list li::before { content:'✓'; display:inline-flex; align-items:center; justify-content:center; min-width:18px; width:18px; height:18px; border-radius:50%; background:var(--green-bg); color:var(--green); font-size:11px; font-weight:700; margin-top:1px; }
.output-card.dark .output-list li::before { background:rgba(191,153,242,.2); color:var(--lavender); }
@media (max-width:780px) { .outputs-grid { grid-template-columns:1fr; } }

/* Señales · cuándo es el momento ideal */
.senales { display:grid; grid-template-columns:repeat(auto-fit, minmax(260px,1fr)); gap:14px; margin-top:32px; }
.senal { background:#fff; border:1px solid var(--line); border-radius:14px; padding:22px; display:flex; align-items:flex-start; gap:14px; transition:all .2s; }
.senal:hover { border-color:var(--lavender); box-shadow:0 12px 28px -14px rgba(35,6,63,.12); }
.senal .icon { width:36px; height:36px; min-width:36px; border-radius:50%; background:var(--lavender-bg); color:var(--purple); display:inline-flex; align-items:center; justify-content:center; font-weight:700; font-size:14px; }
.senal-body h4 { font-size:14px; font-weight:600; color:var(--deep); margin-bottom:6px; line-height:1.3; }
.senal-body p { font-size:13px; color:var(--ink-soft); line-height:1.5; }
.no-ideal { margin-top:32px; padding:20px 24px; background:var(--warn-bg); border-left:3px solid var(--warn); border-radius:10px; font-size:14px; color:var(--ink); }
.no-ideal strong { color:var(--warn); }

/* Qué incluye · tabla */
.incluye-table { background:#fff; border:1px solid var(--line); border-radius:18px; overflow:hidden; box-shadow:0 12px 32px -16px rgba(35,6,63,.10); margin-top:32px; }
.incluye-row { display:grid; grid-template-columns:1fr 1.6fr; padding:18px 24px; border-bottom:1px solid var(--line); gap:24px; align-items:center; }
.incluye-row:last-child { border-bottom:none; }
.incluye-row:nth-child(even) { background:var(--bg-soft); }
.incluye-key { font-size:11px; font-weight:700; color:var(--ink-mute); text-transform:uppercase; letter-spacing:1.2px; }
.incluye-val { font-size:14.5px; color:var(--deep); font-weight:500; }
.incluye-val strong { color:var(--purple); font-weight:600; }
@media (max-width:640px) { .incluye-row { grid-template-columns:1fr; gap:6px; } }

/* Timeline · cómo se siente */
.timeline { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:32px; position:relative; }
.timeline::before { content:''; position:absolute; top:38px; left:5%; right:5%; height:2px; background:linear-gradient(90deg, var(--lavender), var(--purple)); opacity:.3; z-index:0; }
.timeline-step { background:#fff; border:1px solid var(--line); border-radius:16px; padding:24px; position:relative; z-index:1; }
.timeline-step .icon { width:46px; height:46px; border-radius:50%; background:#fff; border:2px solid var(--purple); color:var(--purple); font-family:'Instrument Serif',serif; font-style:italic; font-size:22px; display:inline-flex; align-items:center; justify-content:center; margin-bottom:14px; }
.timeline-step h4 { font-size:15px; font-weight:600; color:var(--deep); margin-bottom:8px; letter-spacing:-.2px; }
.timeline-step p { font-size:13px; color:var(--ink-soft); line-height:1.55; }
@media (max-width:800px) { .timeline { grid-template-columns:1fr; } .timeline::before { display:none; } }

/* Navegación antes / después */
.reto-nav { display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:48px; }
.reto-nav a { background:#fff; border:1px solid var(--line); border-radius:14px; padding:22px 24px; text-decoration:none; transition:all .2s; display:flex; flex-direction:column; gap:6px; }
.reto-nav a:hover { border-color:var(--lavender); transform:translateY(-2px); box-shadow:0 12px 28px -14px rgba(35,6,63,.12); }
.reto-nav a.disabled { opacity:.55; pointer-events:none; }
.reto-nav .dir { font-size:11px; color:var(--ink-mute); font-weight:700; text-transform:uppercase; letter-spacing:1px; }
.reto-nav .nombre { font-size:16px; color:var(--deep); font-weight:600; line-height:1.3; }
.reto-nav .nombre .serif { color:var(--purple); }
.reto-nav a.next { text-align:right; }
@media (max-width:640px) { .reto-nav { grid-template-columns:1fr; } .reto-nav a.next { text-align:left; } }

/* CTA final · cierre */
.cta-final { background:var(--deep); color:#fff; text-align:center; padding:88px 32px; position:relative; overflow:hidden; }
.cta-final::before { content:''; position:absolute; inset:0; background:radial-gradient(circle at 25% 50%, rgba(191,153,242,.18) 0%, transparent 45%), radial-gradient(circle at 75% 30%, rgba(61,22,112,.4) 0%, transparent 50%); }
.cta-final .container { position:relative; z-index:2; }
.cta-final h2 { color:#fff; margin:0 auto 20px; max-width:760px; }
.cta-final h2 .serif { color:var(--lavender); }
.cta-final .lead { color:rgba(255,255,255,.85); margin:0 auto 28px; }
.cta-final .btns { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.btn-whatsapp { display:inline-flex; align-items:center; gap:8px; background:#25D366; color:#fff; padding:15px 26px; border-radius:100px; text-decoration:none; font-weight:600; font-size:15px; }
.btn-whatsapp:hover { background:#1ebe5b; }
.btn-whatsapp svg { width:16px; height:16px; fill:#fff; }
.btn-primary-lavender { background:var(--lavender); color:var(--deep); padding:15px 26px; font-size:15px; }
.btn-primary-lavender:hover { background:#fff; }

/* Footer */
footer { background:var(--deep); color:rgba(255,255,255,.75); padding:60px 0 30px; font-size:14px; }
footer .container { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; }
@media (max-width:720px) { footer .container { grid-template-columns:1fr 1fr; gap:30px; } }
.footer-brand img { height:36px; margin-bottom:16px; opacity:.9; }
.footer-brand p { font-size:14px; line-height:1.6; opacity:.8; max-width:320px; }
.footer-col h5 { font-size:12px; font-weight:700; letter-spacing:1.2px; text-transform:uppercase; color:#fff; margin-bottom:14px; }
.footer-col a { display:block; color:rgba(255,255,255,.75); text-decoration:none; padding:4px 0; font-size:14px; }
.footer-col a:hover { color:var(--lavender); }
.footer-bottom { margin-top:48px; padding-top:22px; border-top:1px solid rgba(255,255,255,.1); text-align:center; font-size:13px; opacity:.6; font-family:monospace; }

/* Animations */
.reveal { opacity:0; transform:translateY(20px); transition:opacity .7s ease-out, transform .7s ease-out; }
.reveal.visible { opacity:1; transform:translateY(0); }

/* ─── Página índice /retos ─── */
.retos-index-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:32px; }
.reto-card-idx { background:#fff; border:1px solid var(--line); border-radius:18px; padding:32px; transition:all .25s; display:flex; flex-direction:column; gap:16px; text-decoration:none; color:inherit; }
.reto-card-idx:hover { transform:translateY(-3px); border-color:var(--lavender); box-shadow:0 20px 40px -18px rgba(35,6,63,.16); }
.reto-card-idx.disponible { border-color:var(--deep); border-width:2px; }
.reto-card-idx-head { display:flex; justify-content:space-between; align-items:flex-start; gap:14px; }
.reto-card-idx .badge-num { background:var(--deep); color:#fff; padding:4px 12px; border-radius:100px; font-size:11px; font-weight:700; letter-spacing:1px; }
.reto-card-idx h3 { font-size:22px; color:var(--deep); font-weight:600; letter-spacing:-.4px; line-height:1.2; }
.reto-card-idx h3 .serif { color:var(--purple); }
.reto-card-idx .desc { font-size:14px; color:var(--ink-soft); line-height:1.55; }
.reto-card-idx .meta { display:flex; gap:14px; font-size:12px; color:var(--ink-mute); flex-wrap:wrap; }
.reto-card-idx .meta strong { color:var(--deep); font-weight:600; }
.reto-card-idx .arrow { font-size:18px; color:var(--purple); margin-top:auto; align-self:flex-end; }
@media (max-width:780px) { .retos-index-grid { grid-template-columns:1fr; } }