/* viu — sitio web. Colores del logo: celeste #2f9cf2 / #8fd3ff. Letra: Poppins (SIL OFL, incluida). */
@font-face { font-family: Poppins; src: url(fonts/Poppins-Regular.ttf) format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: Poppins; src: url(fonts/Poppins-Medium.ttf) format("truetype"); font-weight: 500; font-display: swap; }
@font-face { font-family: Poppins; src: url(fonts/Poppins-SemiBold.ttf) format("truetype"); font-weight: 600; font-display: swap; }
@font-face { font-family: Poppins; src: url(fonts/Poppins-Bold.ttf) format("truetype"); font-weight: 700; font-display: swap; }

:root {
  --bg: #ffffff;
  --bg-soft: #f4f9fe;
  --bg-card: #ffffff;
  --ink: #0d1b2a;
  --ink-2: #4a5a6b;
  --ink-3: #7b8896;
  --line: #e3ebf3;
  --accent: #1e8ce6;
  --accent-2: #2f9cf2;
  --accent-light: #8fd3ff;
  --accent-soft: #e6f3fe;
  --shadow: 0 30px 60px -20px rgba(11, 62, 112, .28), 0 12px 24px -12px rgba(11, 62, 112, .18);
  --radius: 18px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b131c;
    --bg-soft: #101b27;
    --bg-card: #131f2c;
    --ink: #eef4fa;
    --ink-2: #a9b8c7;
    --ink-3: #7e8fa1;
    --line: #213142;
    --accent: #5cb8f6;
    --accent-2: #5cb8f6;
    --accent-soft: #15283a;
    --shadow: 0 30px 60px -20px rgba(0, 0, 0, .6), 0 12px 24px -12px rgba(0, 0, 0, .5);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: Poppins, -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* Barra superior */
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(1.6) blur(16px); -webkit-backdrop-filter: saturate(1.6) blur(16px);
  background: color-mix(in srgb, var(--bg) 80%, transparent); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 22px; color: var(--ink); letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.nav nav { display: flex; gap: 24px; margin-left: auto; font-size: 15px; }
.nav nav a { color: var(--ink-2); }
.nav nav a:hover { color: var(--ink); text-decoration: none; }
.nav nav a.btn, .nav nav a.btn:hover { color: #fff; }

.btn { display: inline-flex; align-items: center; gap: 10px; border-radius: 999px; font-weight: 600; white-space: nowrap;
  padding: 14px 28px; font-size: 17px; background: var(--accent); color: #fff; border: 0; cursor: pointer;
  box-shadow: 0 10px 24px -10px rgba(30, 140, 230, .7); transition: transform .15s, box-shadow .15s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); box-shadow: 0 14px 28px -10px rgba(30, 140, 230, .8); }
.btn.small { padding: 8px 18px; font-size: 15px; box-shadow: none; }
.btn svg { width: 20px; height: 20px; }
.btn.soon { cursor: default; opacity: .75; box-shadow: none; }
.btn.soon:hover { transform: none; }
.btn.ghost { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1.5px var(--accent); }
@media (prefers-color-scheme: dark) {   /* el celeste claro necesita letra oscura para leerse bien */
  .btn:not(.ghost), .nav nav a.btn, .nav nav a.btn:hover { color: #06233d; }
}

/* Portada */
.hero { padding: 88px 0 40px; text-align: center; background:
  radial-gradient(1100px 500px at 50% -120px, var(--accent-soft), transparent 70%); }
.hero h1 { font-size: clamp(38px, 6vw, 68px); line-height: 1.08; letter-spacing: -.035em; margin: 0 auto 22px; max-width: 900px; font-weight: 700; }
.hero h1 .hl { background: linear-gradient(180deg, transparent 58%, color-mix(in srgb, var(--accent-light) 55%, transparent) 58%); padding: 0 .06em; white-space: nowrap; }
.hero p.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--ink-2); max-width: 720px; margin: 0 auto 34px; }
.hero .cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .meta { margin-top: 16px; font-size: 14px; color: var(--ink-3); }
.shot { border-radius: 14px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.hero .shot { margin: 64px auto 0; max-width: 1080px; width: 100%; }

/* Leyenda de colores de la portada */
.legend { display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: center; margin-top: 30px; font-size: 15px; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
mark { color: #1a1a1a; padding: 2px 8px; border-radius: 4px; font-weight: 600; font-size: 14px; }
.m-verde { background: #8ce66e; } .m-amarillo { background: #ffde59; } .m-azul { background: #7dc3ff; }
.m-rosa { background: #ff91c3; } .m-morado { background: #c89bff; }
.link-ic { width: 40px; height: 14px; fill: #f5555a; stroke: #f5555a; stroke-width: 2.4; stroke-linecap: round; }
.legend b { color: var(--ink); font-weight: 600; }
.cam-ic { width: 20px; height: 20px; fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }


/* Cómo funciona */
.how { padding: 96px 0; background: var(--bg-soft); text-align: center; }
.how .sub { color: var(--ink-2); max-width: 640px; margin: 0 auto 48px; }
.how-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: left; }
.how-step { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.how-step .n { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 600; margin-bottom: 16px; }
.how-step h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -.01em; }
.how-step p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* Para quién */
.audience { padding: 56px 0 24px; text-align: center; }
.audience p { color: var(--ink-3); font-size: 15px; margin: 0 0 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.chip { padding: 8px 16px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }

/* Funciones */
.feature { padding: 96px 0; }
.feature.alt { background: var(--bg-soft); }
.feature .wrap { display: grid; grid-template-columns: 5fr 7fr; gap: 64px; align-items: center; }
.feature.flip .wrap { grid-template-columns: 7fr 5fr; }
.feature.flip .text { order: 2; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.feature h2, .section-title { font-size: clamp(30px, 4vw, 44px); line-height: 1.12; letter-spacing: -.03em; margin: 0 0 18px; font-weight: 700; }
.feature p { color: var(--ink-2); margin: 0 0 18px; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 30px; color: var(--ink-2); font-size: 16px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 7px; width: 18px; height: 11px; border-radius: 6px; background: linear-gradient(180deg, var(--accent-light), var(--accent-2)); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.pair figure { margin: 0; }
.pair figcaption { font-size: 13px; color: var(--ink-3); text-align: center; margin-top: 10px; }

/* Más funciones */
.more { padding: 96px 0; }
.more .section-title { text-align: center; margin-bottom: 48px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 16px; }
.card .ic svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 6px; font-size: 18px; font-weight: 600; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* Privacidad */
.privacy { padding: 96px 0; background: linear-gradient(180deg, #0f2a44, #0b1d30); color: #eaf3fb; }
.privacy .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.privacy .eyebrow { color: var(--accent-light); }
.privacy p { color: #b9cde0; }
.privacy .points { display: grid; gap: 16px; }
.privacy .point { display: flex; gap: 16px; padding: 20px; border-radius: 16px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); }
.privacy .point svg { flex: none; width: 26px; height: 26px; color: var(--accent-light); margin-top: 2px; }
.privacy .point b { display: block; color: #fff; font-weight: 600; margin-bottom: 2px; }
.privacy .point span { color: #b9cde0; font-size: 15px; }

/* Descargar */
.download { padding: 104px 0; text-align: center; }
.download .icon { width: 112px; height: 112px; margin: 0 auto 22px; }
.download p.lead { color: var(--ink-2); max-width: 600px; margin: 0 auto 30px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; margin: 56px auto 0; text-align: left; }
.step { padding: 22px; border-radius: var(--radius); background: var(--bg-soft); border: 1px solid var(--line); }
.step .n { width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 600; font-size: 15px; margin-bottom: 12px; }
.step b { display: block; margin-bottom: 4px; }
.step span { color: var(--ink-2); font-size: 15px; }
.reqs { margin: 40px auto 0; max-width: 760px; color: var(--ink-3); font-size: 14px; }

/* Preguntas */
.faq { padding: 96px 0; background: var(--bg-soft); }
.faq .section-title { text-align: center; margin-bottom: 40px; }
.faq .list { max-width: 780px; margin: 0 auto; }
details { background: var(--bg-card); border: 1px solid var(--line); border-radius: 14px; padding: 0 22px; margin-bottom: 12px; }
summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: 0 0 18px; color: var(--ink-2); font-size: 16px; }

footer { padding: 40px 0; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
footer a { color: var(--ink-2); }

/* Página de privacidad */
.doc { max-width: 760px; margin: 0 auto; padding: 72px 24px 96px; }
.doc h1 { font-size: 42px; letter-spacing: -.03em; line-height: 1.1; margin: 0 0 8px; }
.doc .date { color: var(--ink-3); margin-bottom: 40px; }
.doc h2 { font-size: 22px; margin: 40px 0 10px; letter-spacing: -.01em; }
.doc p, .doc li { color: var(--ink-2); }

/* Aparece al bajar */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* Teléfono y tableta */
@media (max-width: 900px) {
  .feature .wrap, .feature.flip .wrap, .privacy .wrap { grid-template-columns: 1fr; gap: 36px; }
  .feature.flip .text { order: 0; }
  .grid { grid-template-columns: 1fr 1fr; }
  .how-steps { grid-template-columns: 1fr 1fr; }
  .how { padding: 72px 0; }
  .steps { grid-template-columns: 1fr; }
  .nav nav a:not(.btn) { display: none; }
  .feature, .more, .privacy, .faq, .download { padding: 72px 0; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .grid, .pair, .how-steps { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .hero .shot { margin-top: 40px; }
}