/* ===== Solo Afiliados — home ===== */
:root {
  --bg: #0b1120;
  --bg-2: #0f172a;
  --card: #141e33;
  --line: #22304d;
  --text: #eef2f8;
  --muted: #9aa7bd;
  --blue: #1e90ff;
  --green: #22c55e;
  --green-dark: #16a34a;
  --red: #f05252;
  --radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--green); }

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 800px; }
.center { text-align: center; }
.center-block { margin-left: auto; margin-right: auto; }

section { padding: 88px 0; }

h1, h2 { font-family: 'Sora', 'Inter', sans-serif; font-weight: 800; line-height: 1.15; letter-spacing: -.5px; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 20px; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); margin-bottom: 16px; }
h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 8px; line-height: 1.3; }
.grad { background: linear-gradient(90deg, var(--blue), var(--green)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.kicker { display: block; font-size: .8rem; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--green); margin-bottom: 12px; }
.lead { font-size: 1.18rem; color: #cdd6e4; max-width: 720px; }
.section-sub { color: var(--muted); max-width: 640px; margin: 0 auto 48px; }

/* ===== Botones ===== */
.btn { display: inline-block; text-decoration: none; font-weight: 900; letter-spacing: .4px; border-radius: 999px; transition: transform .15s, box-shadow .2s, background .2s; text-align: center; }
.btn-green { background: var(--green); color: #04210f; box-shadow: 0 8px 30px rgba(34,197,94,.35); }
.btn-green:hover { background: #2fdc6c; transform: translateY(-2px); box-shadow: 0 12px 40px rgba(34,197,94,.5); }
.btn-sm { padding: 10px 20px; font-size: .9rem; }
.btn-lg { padding: 18px 34px; font-size: 1.05rem; }
.btn-xl { padding: 22px 40px; font-size: 1.15rem; }
.pulse { animation: pulse 2.2s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,197,94,.55); }
  70% { box-shadow: 0 0 0 18px rgba(34,197,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}
.cta-sub { display: block; margin-top: 14px; font-size: .9rem; color: var(--muted); }
.cta-center { text-align: center; margin-top: 56px; }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11,17,32,.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { height: 34px; width: auto; }
.header-nav { display: flex; align-items: center; gap: 20px; }
.link-login { color: var(--muted); text-decoration: none; font-weight: 600; font-size: .95rem; }
.link-login:hover { color: var(--text); }

/* ===== Hero ===== */
.hero {
  padding-top: 72px;
  background:
    radial-gradient(700px 420px at 15% 0%, rgba(30,144,255,.18), transparent 70%),
    radial-gradient(700px 420px at 90% 30%, rgba(34,197,94,.14), transparent 70%),
    var(--bg);
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: center; }
.pill { display: inline-block; background: var(--card); border: 1px solid var(--line); padding: 8px 16px; border-radius: 999px; font-size: .85rem; font-weight: 600; margin-bottom: 24px; }
.hero .lead { margin-bottom: 32px; }
.social-proof { margin-top: 28px; color: var(--muted); font-size: .95rem; }

.hero-books { position: relative; height: 460px; }
.book { position: absolute; filter: drop-shadow(0 30px 50px rgba(0,0,0,.6)); }
.book-1 { width: 58%; left: 4%; top: 40px; z-index: 2; transform: rotate(-4deg); }
.book-2 { width: 62%; right: 0; top: 0; transform: rotate(5deg); }
.free-sticker {
  position: absolute; z-index: 3; left: 0; bottom: 20px;
  background: var(--green); color: #04210f; font-weight: 900; font-size: 1.1rem; letter-spacing: 1px;
  width: 104px; height: 104px; border-radius: 50%; display: grid; place-items: center;
  transform: rotate(-12deg); box-shadow: 0 10px 30px rgba(34,197,94,.45);
  border: 4px dashed rgba(4,33,15,.35);
}

/* ===== Promesas ===== */
.promises { background: var(--bg-2); border-block: 1px solid var(--line); padding: 48px 0; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.promise { display: flex; gap: 14px; align-items: flex-start; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.promise b { display: block; font-size: 1rem; }
.promise small { color: var(--muted); font-size: .85rem; }
.p-icon { flex: 0 0 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-weight: 900; }
.promise.no .p-icon { background: rgba(240,82,82,.15); color: var(--red); }
.promise.yes .p-icon { background: rgba(34,197,94,.15); color: var(--green); }

/* ===== Anti-gurú ===== */
.anti .lead { margin-bottom: 40px; }
.vs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 900px; margin: 0 auto; }
.vs-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.vs-card ul { list-style: none; margin-top: 12px; }
.vs-card li { padding: 10px 0 10px 28px; position: relative; border-bottom: 1px solid var(--line); }
.vs-card li:last-child { border-bottom: 0; }
.vs-card.bad { opacity: .8; }
.vs-card.bad li::before { content: '✕'; position: absolute; left: 0; color: var(--red); font-weight: 900; }
.vs-card.good { border-color: var(--green); box-shadow: 0 0 40px rgba(34,197,94,.12); }
.vs-card.good li::before { content: '✓'; position: absolute; left: 0; color: var(--green); font-weight: 900; }

/* ===== Guías ===== */
.guides { background: var(--bg-2); }
.guide { display: grid; grid-template-columns: 340px 1fr; gap: 56px; align-items: center; max-width: 960px; margin: 0 auto 64px; }
.guide:last-of-type { margin-bottom: 0; }
.guide.reverse { grid-template-columns: 1fr 340px; }
.guide.reverse .guide-cover { order: 2; }
.guide-cover img { width: 100%; filter: drop-shadow(0 30px 50px rgba(0,0,0,.55)); transition: transform .3s; }
.guide-cover img:hover { transform: translateY(-6px) rotate(-1deg); }
.level { display: inline-block; font-size: .78rem; font-weight: 800; padding: 5px 12px; border-radius: 999px; margin-bottom: 14px; letter-spacing: .5px; }
.lvl-1 { background: rgba(30,144,255,.15); color: #6cb6ff; }
.lvl-2 { background: rgba(34,197,94,.15); color: #5ee08e; }
.guide-body h3 { font-family: 'Sora', sans-serif; font-size: 1.7rem; }
.guide-hook { color: var(--muted); margin-bottom: 18px; }
.checks { list-style: none; margin-bottom: 22px; }
.checks li { padding: 8px 0 8px 30px; position: relative; }
.checks li::before { content: '✓'; position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 50%; background: var(--green); color: #04210f; font-size: .75rem; font-weight: 900; display: grid; place-items: center; }
.price-tag s { color: var(--muted); font-size: .85rem; margin-right: 8px; }
.price-tag b { background: var(--green); color: #04210f; padding: 4px 12px; border-radius: 6px; font-weight: 900; letter-spacing: 1px; }

/* ===== Pasos ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 44px; counter-reset: s; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; position: relative; }
.step-n { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: linear-gradient(135deg, var(--blue), var(--green)); font-family: 'Sora', sans-serif; font-weight: 800; font-size: 1.3rem; margin-bottom: 16px; color: #fff; }
.step p { color: var(--muted); font-size: .95rem; }

/* ===== Para quién ===== */
.who { background: var(--bg-2); padding: 64px 0; }
.who-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.who-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.who-emoji { font-size: 2.2rem; display: block; margin-bottom: 10px; }
.who-card p { color: var(--muted); }

/* ===== FAQ ===== */
.faq h2 { margin-bottom: 32px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; overflow: hidden; }
summary { cursor: pointer; padding: 20px 56px 20px 22px; font-weight: 700; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 22px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--green); transition: transform .2s; }
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details > div { padding: 0 22px 20px; color: var(--muted); }

/* ===== CTA final ===== */
.final-cta { background: radial-gradient(800px 400px at 50% 100%, rgba(34,197,94,.2), transparent 70%), var(--bg); }
.final-cta .lead { margin-bottom: 32px; }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0 110px; text-align: center; font-size: .85rem; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-bottom: 14px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); }

/* ===== Sticky CTA ===== */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; background: rgba(15,23,42,.96); backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  transform: translateY(110%); transition: transform .3s ease;
}
.sticky-cta.show { transform: translateY(0); }
.sticky-text { font-size: .9rem; color: var(--muted); }
.sticky-text b { color: var(--text); }
@media (min-width: 900px) {
  .sticky-cta { left: 50%; right: auto; bottom: 20px; transform: translate(-50%, 150%); border: 1px solid var(--line); border-radius: 999px; padding: 10px 10px 10px 24px; gap: 24px; box-shadow: 0 10px 40px rgba(0,0,0,.5); }
  .sticky-cta.show { transform: translate(-50%, 0); }
}

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  section { padding: 64px 0; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero .lead { margin-left: auto; margin-right: auto; }
  .hero-books { height: 360px; max-width: 420px; width: 100%; margin: 0 auto; order: -1; }
  .promise-grid { grid-template-columns: 1fr 1fr; }
  .guide, .guide.reverse { grid-template-columns: 1fr; gap: 28px; text-align: center; }
  .guide.reverse .guide-cover { order: 0; }
  .guide-cover { max-width: 260px; margin: 0 auto; }
  .checks { display: inline-block; text-align: left; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .logo { height: 26px; }
  .link-login { display: none; }
  .hero { padding-top: 40px; }
  .hero-books { height: 280px; }
  .free-sticker { width: 80px; height: 80px; font-size: .9rem; }
  .promise-grid, .vs-grid, .steps-grid, .who-grid { grid-template-columns: 1fr; }
  .btn-xl { padding: 20px 22px; font-size: 1rem; }
  .guide-body h3 { font-size: 1.4rem; }
  .cta-sub { line-height: 1.9; }
}