/* osmosis.atodosol.es — landing independiente. Identidad A Todo Sol
   (Poppins, azul #007BFF, navy #0A0F1C) con acento "agua" #00C2FF. */
:root{
  --blue:#007BFF; --aqua:#00C2FF; --navy:#0A0F1C; --navy-2:#0E1930;
  --ink:#3D3A3B; --head:#1E2530; --muted:#6B7280; --surface:#F0F7FE;
  --card-shadow:0 4px 24px rgba(155,172,216,.25);
  --led-blue:#22a7ff; --led-yellow:#ffc531; --led-red:#ff4d4d;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:Poppins,system-ui,sans-serif;color:var(--ink);line-height:1.65;background:#fff}
h1,h2,h3{color:var(--head);line-height:1.15;letter-spacing:-.02em}
h2{font-size:clamp(26px,4vw,40px);font-weight:700;max-width:820px;margin-bottom:18px}
img{max-width:100%;display:block}
a{color:var(--blue)}

/* ── topbar ── */
.topbar{position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;
  padding:12px clamp(16px,4vw,48px);background:rgba(10,15,28,.92);backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:#fff;text-decoration:none;font-size:17px;letter-spacing:.04em}
.brand img{background:#fff;border-radius:10px;padding:3px;width:44px;height:auto}
.brand-txt{line-height:1.15}
.brand-txt small{display:block;font-weight:500;color:var(--aqua);letter-spacing:.12em;font-size:11px;text-transform:uppercase}
.topbar-right{display:flex;align-items:center;gap:16px}
.lang-switch{color:rgba(255,255,255,.75);text-decoration:none;font-weight:600;font-size:13px;border:1.5px solid rgba(255,255,255,.3);border-radius:8px;padding:5px 10px}
.lang-switch:hover{color:#fff;border-color:var(--aqua)}

/* ── botones ── */
.btn{display:inline-block;background:linear-gradient(120deg,var(--blue),var(--aqua));color:#fff;font-weight:600;
  border:none;border-radius:50px;padding:14px 30px;font-size:16px;text-decoration:none;cursor:pointer;
  font-family:inherit;transition:transform .15s ease, box-shadow .15s ease;box-shadow:0 6px 20px rgba(0,123,255,.35)}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,194,255,.45)}
.btn:disabled{background:#c4ccd6;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-sm s{opacity:.65;font-weight:400;margin-right:2px}
.btn-lg{padding:18px 40px;font-size:18px}
.btn-lg small{display:block;font-weight:400;font-size:12px;opacity:.85}
.btn-ghost{color:#fff;text-decoration:none;font-weight:500;opacity:.85;padding:14px 8px}
.btn-ghost:hover{opacity:1}

/* ── hero ── */
.hero{position:relative;background:radial-gradient(1200px 700px at 75% -10%,#12365f 0%,var(--navy) 55%);color:#fff;overflow:hidden}
.hero-water{position:absolute;inset:auto 0 -2px 0;height:140px;pointer-events:none;
  background:
    radial-gradient(60% 55px at 20% 100%, rgba(0,194,255,.25), transparent 70%),
    radial-gradient(50% 45px at 55% 100%, rgba(0,123,255,.3), transparent 70%),
    radial-gradient(65% 60px at 85% 100%, rgba(0,194,255,.2), transparent 70%)}
.hero-inner{max-width:1200px;margin:0 auto;padding:clamp(48px,8vw,110px) clamp(16px,4vw,48px);
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{color:#fff;font-size:clamp(38px,6vw,64px);font-weight:800;margin:18px 0}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--aqua),#7fe3ff);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{font-size:clamp(16px,2vw,19px);color:rgba(255,255,255,.82);max-width:540px}
.pill{display:inline-block;border:1.5px solid rgba(0,194,255,.6);color:#bfeaff;border-radius:999px;
  padding:6px 16px;font-size:13px;font-weight:600}
.pill-sm{padding:2px 10px;font-size:11px;vertical-align:middle}
.pill-promo{border-color:#FFB800;color:#8a6400;background:#fff7e0}
.hero-ctas{display:flex;gap:18px;align-items:center;margin:30px 0 22px;flex-wrap:wrap}
.hero-ticks{display:flex;gap:22px;list-style:none;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.75)}
.hero-ticks li::before{content:"✓ ";color:var(--aqua);font-weight:700}

/* ── placeholders de imagen ── */
.placeholder{position:relative;border-radius:20px;overflow:hidden;background:#e8eef6}
.placeholder::after{content:attr(data-ph);position:absolute;inset:auto 0 0 0;background:rgba(10,15,28,.65);
  color:#fff;font-size:12px;padding:6px 12px;text-align:center;letter-spacing:.03em}
.placeholder-dark{background:#122036}
.ph-sm{height:210px;border-radius:14px;overflow:hidden;background:#f2f6fb}
.ph-sm img{height:100%;width:100%;object-fit:cover}
.hero-media img{border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.round-media img{border-radius:20px;box-shadow:var(--card-shadow)}
.led-media{max-width:400px;margin:0 auto}
.led-media img{border-radius:20px;box-shadow:0 0 40px rgba(34,167,255,.35);width:100%}

/* ── trust bar ── */
.trust{display:grid;grid-template-columns:repeat(4,1fr);max-width:1100px;margin:0 auto;padding:28px 20px}
.trust-item{text-align:center;padding:10px 20px;border-right:1px solid rgba(10,15,28,.08)}
.trust-item:last-child{border-right:none}
.trust-item b{display:block;font-size:30px;font-weight:700;color:var(--navy);letter-spacing:-.01em}
.trust-item span{font-size:13px;color:var(--muted)}

/* ── secciones ── */
.section{max-width:1200px;margin:0 auto;padding:clamp(48px,7vw,90px) clamp(16px,4vw,48px)}
.section-sub{color:var(--muted);margin:-6px 0 30px;max-width:640px}
.section-dark{max-width:none;background:linear-gradient(160deg,var(--navy),var(--navy-2));color:#fff}
.section-dark h2{color:#fff}
.section-dark p{color:rgba(255,255,255,.78)}
.section-dark>.grid-2{max-width:1200px;margin:0 auto;padding:0}
.section-surface{max-width:none;background:var(--surface)}
.section-surface>*{max-width:1200px;margin-left:auto;margin-right:auto}
.section-surface h2{margin-bottom:18px}
.section-water{max-width:none;background:
  radial-gradient(800px 400px at 15% 0%, rgba(0,194,255,.12), transparent 60%),
  radial-gradient(700px 380px at 90% 100%, rgba(0,123,255,.10), transparent 60%)}
.section-water>*{max-width:1200px;margin-left:auto;margin-right:auto}
.accent{color:var(--blue)}
.bad{color:#d33}
.note{font-size:14px;color:var(--muted);background:var(--surface);border-left:3px solid var(--aqua);
  padding:12px 16px;border-radius:0 12px 12px 0;margin-top:22px;max-width:640px}
.section-dark .note{background:rgba(255,255,255,.06);color:rgba(255,255,255,.75)}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;padding:0 clamp(16px,4vw,48px)}
.section>.grid-2{padding:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border-radius:20px;box-shadow:var(--card-shadow);padding:28px}
.card h3{font-size:19px;margin-bottom:10px}

/* ── comparativa ── */
.compare .card-bad{border-top:4px solid #d33}
.compare .card-good{border-top:4px solid var(--aqua)}
.tds-demo{display:flex;align-items:center;gap:8px;margin-top:18px}
.tds-demo i{font-size:12px;color:var(--muted);font-style:normal;margin-left:6px}
.dot{width:18px;height:18px;border-radius:50%;display:inline-block}
.dot.blue{background:var(--led-blue);box-shadow:0 0 10px rgba(34,167,255,.7)}
.dot.yellow{background:var(--led-yellow);box-shadow:0 0 10px rgba(255,197,49,.7)}
.dot.red{background:var(--led-red);box-shadow:0 0 10px rgba(255,77,77,.7)}

/* ── LED scale ── */
.led-scale{list-style:none;margin:24px 0}
.led{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:14px;margin-bottom:10px;
  background:rgba(255,255,255,.05);transition:background .3s;color:rgba(255,255,255,.85)}
.led b{min-width:86px}
.led-light{width:26px;height:26px;border-radius:50%;background:#233046;flex:none;transition:all .4s}
.led.is-on{background:rgba(255,255,255,.1)}
.led-blue.is-on .led-light{background:var(--led-blue);box-shadow:0 0 18px 4px rgba(34,167,255,.8)}
.led-yellow.is-on .led-light{background:var(--led-yellow);box-shadow:0 0 18px 4px rgba(255,197,49,.8)}
.led-red.is-on .led-light{background:var(--led-red);box-shadow:0 0 18px 4px rgba(255,77,77,.8)}

/* ── pasos filtros ── */
.steps{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin:30px 0;counter-reset:step}
.steps li{background:#fff;border-radius:16px;box-shadow:var(--card-shadow);padding:20px 16px;font-size:14px}
.steps li b{display:flex;width:34px;height:34px;border-radius:50%;background:linear-gradient(120deg,var(--blue),var(--aqua));
  color:#fff;align-items:center;justify-content:center;font-size:15px;margin-bottom:10px}
.wide-media{margin:10px 0}
.wide-media img{width:100%;height:260px;object-fit:cover}
.ticks{list-style:none;margin-top:16px}
.ticks li{padding:7px 0 7px 30px;position:relative}
.ticks li::before{content:"✓";position:absolute;left:0;top:7px;color:var(--blue);font-weight:700}

/* ── salud ── */
.health .card{text-align:center}
.health b{font-size:34px;color:var(--blue);display:block;margin-bottom:8px;font-weight:700}

/* ── FAQ ── */
details{background:#fff;border-radius:14px;box-shadow:var(--card-shadow);margin-bottom:12px;padding:18px 22px;max-width:860px}
summary{font-weight:600;color:var(--head);cursor:pointer}
details p{margin-top:10px;color:var(--ink)}

/* ── tienda ── */
.shop h2{margin-bottom:6px}
.products{margin-bottom:34px}
.product{display:flex;flex-direction:column;gap:10px;position:relative}
.product .pill-promo{position:absolute;top:-12px;left:20px}
.price{font-size:26px;font-weight:700;color:var(--head)}
.price s{color:var(--muted);font-weight:400;font-size:19px;margin-right:6px}
.qty{display:flex;align-items:center;gap:0;border:1.5px solid #D9D9D9;border-radius:50px;width:max-content;overflow:hidden;margin-top:auto}
.qty button{width:46px;height:44px;border:none;background:#fff;font-size:22px;cursor:pointer;color:var(--blue);font-family:inherit}
.qty button:hover{background:var(--surface)}
.qty output{min-width:52px;text-align:center;font-weight:700;font-size:17px}
.summary{max-width:520px;margin:0 auto;background:#fff;border-radius:20px;box-shadow:var(--card-shadow);padding:30px;text-align:center}
.summary-rows{text-align:left;margin-bottom:20px}
.row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed #e3e8f0}
.row small{color:var(--muted);font-weight:400}
.row-total{border-bottom:none;font-size:21px;padding-top:14px}
.row-total b{color:var(--blue)}
.free-ship-hint{font-size:13px;color:#8a6400;background:#fff7e0;border-radius:8px;padding:6px 10px;margin-top:8px;text-align:center}
.btn-buy{width:100%}
.pay-note{font-size:12.5px;color:var(--muted);margin-top:14px}
.error{color:#c00;font-size:14px;margin-top:12px}

/* ── footer ── */
.footer{background:var(--navy);color:rgba(255,255,255,.7);text-align:center;padding:34px 20px;font-size:13.5px}
.footer a{color:#9fd8ff}
.footer p{margin:4px 0}

/* ── responsive ── */
@media(max-width:900px){
  .hero-inner,.grid-2{grid-template-columns:1fr;gap:28px}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .trust{grid-template-columns:1fr 1fr}
  .trust-item:nth-child(2n){border-right:none}
  .trust-item{border-bottom:1px solid rgba(10,15,28,.08);padding:16px 10px}
  .trust-item:nth-child(n+3){border-bottom:none}
  .section-dark>.grid-2{padding:0 clamp(16px,4vw,48px)}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .btn{transition:none}
  .led-light{transition:none}
}