/* ===========================================================================
   Helsia — landing (helsia.cl). Identidad "Sereno": teal suave, títulos serif,
   ondas concéntricas del login. Sin dependencias externas (fuentes del sistema).
   =========================================================================== */

/* Cuerpo: Hanken Grotesk (self-hosted, sin CDN). Títulos: Georgia (del sistema). */
@font-face { font-family: 'Hanken Grotesk'; font-style: normal; font-weight: 400; font-display: swap; src: url('fonts/hanken-grotesk-400.woff2') format('woff2'); }
@font-face { font-family: 'Hanken Grotesk'; font-style: normal; font-weight: 500; font-display: swap; src: url('fonts/hanken-grotesk-500.woff2') format('woff2'); }
@font-face { font-family: 'Hanken Grotesk'; font-style: normal; font-weight: 600; font-display: swap; src: url('fonts/hanken-grotesk-600.woff2') format('woff2'); }
@font-face { font-family: 'Hanken Grotesk'; font-style: normal; font-weight: 700; font-display: swap; src: url('fonts/hanken-grotesk-700.woff2') format('woff2'); }

:root {
  /* Paleta del producto */
  --teal-900: #0f766e;
  --teal-700: #12857a;
  --teal-600: #14a08a;
  --mint-300: #98e6d5;
  --mint-100: #eefaf6;

  --ink:      #1f2d2b;
  --ink-2:    #3f4f4d;
  --muted:    #6d817d;
  --muted-2:  #8fa39f;

  --surface:  #ffffff;
  --surface-2:#f1f5f4;
  --bg:       #f7f9f9;
  --line:     #e7edec;

  --font-serif: Georgia, 'Times New Roman', 'Noto Serif', serif;
  --font-sans:  'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:  ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  --wrap: 1120px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 2px rgba(31,45,43,0.05), 0 6px 20px rgba(31,45,43,0.05);
  --shadow-md: 0 10px 40px rgba(15,118,110,0.12);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { color: var(--ink); margin: 0; text-wrap: balance; }
h1, h2 { font-family: var(--font-serif); font-weight: 700; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.5rem, 6vw, 4.3rem); line-height: 1.04; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.7rem); line-height: 1.12; }
h3 { font-family: var(--font-sans); font-size: 1.16rem; font-weight: 650; letter-spacing: -0.01em; }
p  { margin: 0; }
a  { color: var(--teal-900); text-decoration: none; }

.wrap { position: relative; z-index: 1; width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); font-size: 0.92em; color: var(--teal-900); }

.wordmark { font-family: var(--font-serif); font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }
.wordmark .dot { color: var(--teal-600); }

.eyebrow {
  font-size: 0.8rem; font-weight: 650; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--teal-700); margin: 0 0 16px;
}
.eyebrow-light { color: var(--mint-300); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  padding: 13px 24px; border-radius: 999px; transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s, color 0.18s;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--teal-700), var(--teal-900)); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: linear-gradient(135deg, var(--teal-600), var(--teal-700)); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--teal-600); color: var(--teal-900); transform: translateY(-2px); }
.btn-sm { padding: 9px 17px; font-size: 0.92rem; }
.btn-lg { padding: 16px 32px; font-size: 1.06rem; }

/* ---------- Navegación ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: var(--wrap); margin: 0 auto;
  transition: background 0.25s, box-shadow 0.25s, padding 0.25s;
}
.nav.scrolled {
  background: rgba(247,249,249,0.82); backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line); padding-top: 12px; padding-bottom: 12px;
  left: 50%; transform: translateX(-50%); width: min(100%, calc(var(--wrap) + 48px));
}
.brand { display: inline-flex; align-items: center; gap: 9px; }
.brand .leaf { color: var(--teal-600); }
.brand .wordmark { font-size: 1.4rem; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--ink-2); font-weight: 500; font-size: 0.98rem; }
.nav-links a:hover { color: var(--teal-900); }
.nav-links a.btn { color: #fff; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: grid; place-items: center;
  text-align: center; overflow: hidden; padding: 120px 24px 80px;
  background: linear-gradient(158deg, #bfe9df 0%, #d8f2ec 34%, #ecf7f4 64%, var(--surface) 100%);
}
.hero::before { /* aurora — capa 1 */
  content: ""; position: absolute; inset: -30%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(40% 40% at 20% 26%, rgba(20,160,138,0.48), transparent 66%),
    radial-gradient(44% 44% at 80% 22%, rgba(15,118,110,0.40), transparent 66%),
    radial-gradient(52% 52% at 62% 86%, rgba(152,230,213,0.60), transparent 70%);
  filter: blur(30px); animation: aurora 20s ease-in-out infinite alternate;
}
.hero::after { /* aurora — capa 2 (deriva distinta, da profundidad) */
  content: ""; position: absolute; inset: -30%; z-index: 0; pointer-events: none;
  background:
    radial-gradient(34% 34% at 72% 62%, rgba(20,160,138,0.34), transparent 68%),
    radial-gradient(30% 30% at 28% 72%, rgba(15,118,110,0.30), transparent 68%);
  filter: blur(36px); animation: aurora2 27s ease-in-out infinite alternate;
}
.hero-canvas { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 2; max-width: 780px; }
.hero h1 { margin: 0 0 22px; }
.hero h1 em {
  font-style: italic;
  background: linear-gradient(100deg, var(--teal-600), var(--teal-900) 58%, #0b5a54);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: var(--ink-2); max-width: 560px; margin: 0 auto 32px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin: 26px 0 0; font-size: 0.95rem; color: var(--muted); }
.hero-fade { position: absolute; left: 0; right: 0; bottom: 0; height: 120px; z-index: 1;
  background: linear-gradient(180deg, transparent, var(--surface)); pointer-events: none; }

/* ---------- Secciones ---------- */
[id] { scroll-margin-top: 84px; }
.section { position: relative; overflow: hidden; padding: clamp(72px, 10vw, 128px) 0;
  background: linear-gradient(180deg, #ffffff 0%, #f3faf8 100%); }
.section-alt { background: linear-gradient(180deg, #eef7f4 0%, #f7f9f9 52%, #eaf6f2 100%); }

/* Orbes de luz teal, difuminados y flotando (ambiente detrás del contenido). */
#caracteristicas::before, #como::after, .cta::before {
  content: ""; position: absolute; border-radius: 50%; z-index: 0; pointer-events: none; filter: blur(12px);
  background: radial-gradient(circle, rgba(20,160,138,0.18), transparent 66%);
}
#caracteristicas::before { width: 460px; height: 460px; top: -130px; right: -150px; animation: float 18s ease-in-out infinite alternate; }
#como::after { width: 440px; height: 440px; bottom: -170px; left: -130px;
  background: radial-gradient(circle, rgba(152,230,213,0.38), transparent 66%);
  animation: float 23s ease-in-out infinite alternate-reverse; }
.cta::before { width: 540px; height: 540px; top: -190px; left: 50%; margin-left: -270px;
  background: radial-gradient(circle, rgba(20,160,138,0.16), transparent 64%);
  animation: float 21s ease-in-out infinite alternate; }

.section > .wrap > .eyebrow { text-align: center; }
.section > .wrap > h2 { text-align: center; max-width: 720px; margin: 0 auto 52px; }

/* ---------- Características ---------- */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, #fbfefd 100%); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow-sm);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s;
}
.card::before { /* filo de acento con degradé que aparece al pasar el mouse */
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--teal-600), var(--teal-900));
  transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card h3 { margin: 18px 0 9px; }
.card p { color: var(--ink-2); font-size: 0.98rem; line-height: 1.6; }
.ic {
  display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px;
  background: var(--mint-100); color: var(--teal-900);
}
.ic svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round; }
.ic svg .thin { stroke-width: 1.4; }
.ic svg .fill { fill: currentColor; stroke: none; }

/* ---------- Cómo funciona ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 34px 26px 30px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.step-n {
  display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
  font-family: var(--font-serif); font-size: 1.15rem; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--teal-600), var(--teal-900)); margin-bottom: 16px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--ink-2); font-size: 0.98rem; }

/* ---------- Seguridad ---------- */
.security { background: radial-gradient(120% 120% at 20% 0%, #12857a 0%, #0f766e 45%, #0b5a54 100%); color: #dff3ee; }
.security-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.security h2 { color: #fff; }
.security-p { color: rgba(223,243,238,0.82); font-size: 1.05rem; margin-top: 18px; max-width: 460px; }
.security-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.security-list li {
  position: relative; padding: 15px 18px 15px 46px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.10);
  color: rgba(223,243,238,0.9); font-size: 0.98rem; line-height: 1.5;
}
.security-list li strong { color: #fff; font-weight: 650; }
.security-list li::before {
  content: ""; position: absolute; left: 17px; top: 50%; width: 15px; height: 9px; margin-top: -6px;
  border-left: 2.2px solid var(--mint-300); border-bottom: 2.2px solid var(--mint-300);
  transform: rotate(-45deg);
}

/* ---------- Contacto / CTA ---------- */
.cta { background: radial-gradient(125% 90% at 50% 0%, #e4f5f0 0%, var(--surface) 55%); text-align: center; }
.cta-inner { max-width: 640px; }
.cta h2 { margin-bottom: 14px; }
.cta p { color: var(--ink-2); font-size: 1.1rem; margin-bottom: 28px; }
.cta-mail { font-size: 0.95rem; color: var(--muted); margin-top: 18px; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: rgba(255,255,255,0.62); padding: 44px 0; }
.footer .wordmark { color: #fff; font-size: 1.3rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-tag { font-size: 0.9rem; margin-top: 4px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: rgba(255,255,255,0.72); font-size: 0.92rem; }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 0.9rem; }

/* ---------- Animaciones ---------- */
@keyframes aurora {
  0%   { transform: translate3d(-3%, -2%, 0) scale(1);   }
  50%  { transform: translate3d(3%, 2%, 0)  scale(1.08); }
  100% { transform: translate3d(-2%, 3%, 0) scale(1.03); }
}
@keyframes aurora2 {
  0%   { transform: translate3d(3%, 3%, 0)  scale(1.05); }
  50%  { transform: translate3d(-4%, -2%, 0) scale(1);   }
  100% { transform: translate3d(3%, -3%, 0) scale(1.1);  }
}
@keyframes float {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(34px, -26px) scale(1.12); }
}
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
/* Escalona los hijos de una grilla al revelarse */
.grid .reveal.in, .steps .reveal.in { transition-delay: var(--d, 0s); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; gap: 34px; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid { grid-template-columns: 1fr; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer;
    padding: 8px; margin: -8px;
  }
  .nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.25s, opacity 0.2s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav-links {
    position: absolute; top: 100%; right: 12px; left: 12px; flex-direction: column; align-items: stretch; gap: 6px;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px;
    box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  }
  .nav-links.open { opacity: 1; visibility: visible; transform: none; }
  .nav-links a { padding: 10px 12px; border-radius: 10px; }
  .nav-links a:hover { background: var(--surface-2); }
  .nav-links a.btn { justify-content: center; margin-top: 4px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero::before, .hero::after,
  #caracteristicas::before, #como::after, .cta::before { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .card::before, .btn-primary { transition: none; }
}