/* ============================================================
   AHSISTA Edu-Kits — hoja de estilos
   Paleta: fondo carbón (como las fotos de producto), acento
   turquesa de marca, ámbar tipo frasco de reactivo, coral suave.
   ============================================================ */

:root{
  --bg:        #0D1512;
  --bg-alt:    #101A16;
  --panel:     #16211C;
  --panel-2:   #1C2A24;
  --line:      rgba(243,241,234,0.11);
  --line-soft: rgba(243,241,234,0.06);

  --paper:     #F3F1EA;
  --paper-dim: rgba(243,241,234,0.68);
  --paper-dimmer: rgba(243,241,234,0.46);

  --teal:      #2FE1C9;
  --teal-dim:  #1B8F80;
  --amber:     #E8A33D;
  --coral:     #E2735A;

  --cat-bio:   var(--teal);
  --cat-fis:   var(--amber);
  --cat-qui:   var(--coral);

  --font-display: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  --font-body:    'IBM Plex Sans', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --radius: 4px;
  --wrap: 1180px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}

.skip-link{
  position:absolute; left:-999px; top:0;
  background:var(--teal); color:#06231E; padding:10px 16px;
  z-index:200; border-radius:0 0 4px 0;
}
.skip-link:focus{ left:0; }

a{ color:inherit; }
:focus-visible{ outline:2px solid var(--teal); outline-offset:3px; }

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:600;
  margin:0 0 .4em;
  letter-spacing:-0.01em;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--teal);
  margin:0 0 14px;
}
.eyebrow--light{ color:var(--amber); }

.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-body); font-weight:600; font-size:15px;
  padding:13px 24px; border-radius:2px;
  text-decoration:none; border:1px solid transparent;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{ transform:translateY(-1px); }
.btn--primary{ background:var(--teal); color:#06231E; }
.btn--primary:hover{ background:#4CEEDA; }
.btn--outline{ border-color:rgba(243,241,234,0.35); color:var(--paper); }
.btn--outline:hover{ border-color:var(--paper); }
.btn--ghost{ border-color:var(--teal-dim); color:var(--teal); padding:10px 18px; font-size:14px; }
.btn--ghost:hover{ background:rgba(47,225,201,0.1); }

/* ---------------- HEADER ---------------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(13,21,18,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; }
.brand-mark{ height:34px; width:auto; }
.brand-line{ display:flex; flex-direction:column; line-height:1.1; }
.brand-name{ font-family:var(--font-display); font-weight:700; font-size:15px; letter-spacing:.04em; }
.brand-sub{ font-family:var(--font-mono); font-size:11px; color:var(--teal); letter-spacing:.04em; }

.site-nav{ display:flex; gap:32px; }
.site-nav a{
  text-decoration:none; color:var(--paper-dim); font-size:14.5px; font-weight:500;
  transition:color .2s ease;
}
.site-nav a:hover{ color:var(--paper); }

@media (max-width:760px){
  .site-nav{ display:none; }
}

/* ---------------- HERO ---------------- */
.hero{ position:relative; min-height:86vh; display:flex; align-items:flex-end; overflow:hidden; }
.hero-media{ position:absolute; inset:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; object-position:center 30%; }
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(9,13,11,0.35) 0%, rgba(9,13,11,0.35) 35%, rgba(9,13,11,0.94) 92%),
    linear-gradient(90deg, rgba(9,13,11,0.75) 0%, rgba(9,13,11,0.15) 55%);
}
.hero-inner{ position:relative; padding-top:120px; padding-bottom:76px; max-width:760px; }
.hero h1{
  font-size:clamp(2.4rem, 5.2vw, 3.9rem);
  line-height:1.04;
  margin-bottom:22px;
}
.hero-lede{
  font-size:18px; color:var(--paper-dim); max-width:52ch; margin:0 0 34px;
}
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; }

/* ---------------- STATS ---------------- */
.stats{ border-bottom:1px solid var(--line-soft); background:var(--bg-alt); }
.stats-grid{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:var(--line-soft);
}
.stat{
  background:var(--bg-alt);
  padding:34px 28px;
  display:flex; flex-direction:column; gap:6px;
}
.stat-num{ font-family:var(--font-display); font-size:2.4rem; font-weight:700; color:var(--teal); }
.stat-label{ font-size:14px; color:var(--paper-dim); }

@media (max-width:700px){
  .stats-grid{ grid-template-columns:1fr; }
}

/* ---------------- ABOUT ---------------- */
.about{ padding:96px 0; border-bottom:1px solid var(--line-soft); }
.about-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:64px; }
.about-copy h2{ font-size:clamp(1.7rem,3vw,2.3rem); max-width:14ch; }
.about-copy p{ color:var(--paper-dim); max-width:52ch; margin:0 0 16px; }
.about-points{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line-soft); align-content:start; }
.point{ background:var(--bg); padding:22px 22px 24px; }
.point-mark{
  display:block; font-family:var(--font-mono); font-size:12px; letter-spacing:.08em;
  text-transform:uppercase; color:var(--amber); margin-bottom:10px;
}
.point p{ margin:0; font-size:14.5px; color:var(--paper-dim); }

@media (max-width:860px){
  .about-grid{ grid-template-columns:1fr; }
}

/* ---------------- CATALOG ---------------- */
.catalog{ padding:96px 0; border-bottom:1px solid var(--line-soft); }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head h2{ font-size:clamp(1.8rem,3.2vw,2.5rem); }
.section-lede{ color:var(--paper-dim); margin:0; }

.kit-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:28px;
}
@media (max-width:980px){ .kit-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .kit-grid{ grid-template-columns:1fr; } }

.kit-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex; flex-direction:column;
  transition:border-color .2s ease, transform .2s ease;
}
.kit-card:hover{ border-color:rgba(243,241,234,0.28); transform:translateY(-2px); }

.kit-media{ position:relative; aspect-ratio:1/1; background:#05100C; }
.kit-media img{ width:100%; height:100%; object-fit:cover; }
.kit-tag{
  position:absolute; top:12px; left:12px;
  font-family:var(--font-mono); font-size:11px; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 10px; border-radius:2px;
  background:rgba(13,21,18,0.85);
  border:1px solid currentColor;
}
.kit-tag--bio{ color:var(--cat-bio); }
.kit-tag--fis{ color:var(--cat-fis); }
.kit-tag--qui{ color:var(--cat-qui); }

.kit-body{ padding:20px 20px 22px; display:flex; flex-direction:column; flex:1; }
.kit-sku{ font-family:var(--font-mono); font-size:11.5px; color:var(--paper-dimmer); margin:0 0 8px; letter-spacing:.03em; }
.kit-title{ font-size:1.15rem; margin:0 0 2px; line-height:1.25; }
.kit-alias{ font-style:italic; font-size:13px; color:var(--teal); margin:0 0 12px; }
.kit-desc{ font-size:14px; color:var(--paper-dim); margin:0 0 14px; flex:0; }

.kit-details{ margin:0 0 16px; }
.kit-details summary{
  cursor:pointer; font-family:var(--font-mono); font-size:12.5px;
  color:var(--paper-dim); letter-spacing:.03em;
  padding:8px 0; border-top:1px solid var(--line-soft);
  list-style:none;
  display:flex; align-items:center; justify-content:space-between;
}
.kit-details summary::-webkit-details-marker{ display:none; }
.kit-details summary::after{ content:"+"; font-family:var(--font-body); font-size:16px; color:var(--teal); }
.kit-details[open] summary::after{ content:"–"; }
.kit-details summary:hover{ color:var(--paper); }
.kit-details ul{ margin:10px 0 0; padding:0 0 0 18px; font-size:13.5px; color:var(--paper-dim); }
.kit-details li{ margin-bottom:5px; }

.kit-foot{
  margin-top:auto; padding-top:16px; border-top:1px solid var(--line-soft);
  display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.kit-price{ font-family:var(--font-mono); font-size:16px; font-weight:500; color:var(--paper); }
.kit-price-cur{ font-size:11.5px; color:var(--paper-dimmer); margin-right:2px; }
.kit-cta{
  font-size:13px; font-weight:600; color:var(--teal); text-decoration:none;
  white-space:nowrap;
}
.kit-cta:hover{ text-decoration:underline; }

/* ---------------- PARTNERS ---------------- */
.partners{ padding:80px 0; background:var(--bg-alt); border-bottom:1px solid var(--line-soft); }
.partners-title{ font-size:clamp(1.4rem,2.4vw,1.9rem); max-width:22ch; margin-bottom:40px; }
.partners-row{ display:flex; flex-wrap:wrap; gap:16px; }
.partner-chip{
  background:var(--paper); border-radius:6px;
  width:132px; height:88px;
  display:flex; align-items:center; justify-content:center;
  padding:14px;
}
.partner-chip img{ max-width:100%; max-height:100%; object-fit:contain; }

/* ---------------- CONTACT ---------------- */
.contact{ padding:96px 0; }
.contact-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:64px; align-items:start; }
.contact-copy h2{ font-size:clamp(1.8rem,3vw,2.4rem); max-width:16ch; }
.contact-copy p{ color:var(--paper-dim); max-width:46ch; margin:0 0 28px; }
.contact-links{
  display:grid; gap:1px; background:var(--line-soft);
  border:1px solid var(--line-soft); border-radius:var(--radius); overflow:hidden;
}
.contact-links a{
  background:var(--panel); padding:16px 20px; text-decoration:none;
  font-weight:500; font-size:14.5px; color:var(--paper);
  display:flex; align-items:center; justify-content:space-between;
  transition:background .2s ease, color .2s ease;
}
.contact-links a::after{ content:"→"; color:var(--teal); }
.contact-links a:hover{ background:var(--panel-2); color:var(--teal); }

@media (max-width:860px){
  .contact-grid{ grid-template-columns:1fr; }
}

/* ---------------- FOOTER ---------------- */
.site-footer{ border-top:1px solid var(--line-soft); background:var(--bg-alt); }
.footer-inner{
  padding:28px 24px; display:flex; align-items:center; gap:14px;
}
.footer-mascot{ height:40px; width:40px; border-radius:50%; object-fit:cover; }
.footer-inner p{ margin:0; font-size:13px; color:var(--paper-dimmer); }