/* ==========================================================================
   CS Soluciones — design tokens
   Palette grounded in Cancún: deep-ocean navy + Caribbean teal.
   Type: Sora (display) · Instrument Sans (body) · IBM Plex Mono (labels)
   ========================================================================== */

:root {
  --ink:        #0A1D2E;   /* deep ocean navy */
  --ink-soft:   #14314A;
  --teal:       #0FA3B1;   /* Caribbean teal */
  --teal-dark:  #0B7E8A;
  --aqua:       #5EE6D8;   /* shallow-water highlight */
  --paper:      #FBFDFD;
  --mist:       #EDF5F6;   /* alt section background */
  --line:       #D8E6E8;
  --text:       #33475B;

  --font-display: "Sora", system-ui, sans-serif;
  --font-body:    "Instrument Sans", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --radius: 14px;
  --container: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  line-height: 1.65;
  font-size: 1.0625rem;
}

img, svg { display: block; }

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); font-weight: 600; margin-bottom: 1rem; }
h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.4rem; }

a { color: var(--teal-dark); text-decoration: none; }

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 2px;
  border-radius: 4px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal-dark);
  margin-bottom: 0.8rem;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */

.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  border: 2px solid var(--teal);
  background: var(--teal);
  color: #fff;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { background: var(--teal-dark); border-color: var(--teal-dark); transform: translateY(-2px); }

.btn-ghost { background: transparent; color: var(--aqua); border-color: var(--aqua); }
.btn-ghost:hover { background: rgba(94, 230, 216, 0.12); border-color: var(--aqua); }

.btn-light { background: #fff; border-color: #fff; color: var(--ink); }
.btn-light:hover { background: var(--aqua); border-color: var(--aqua); }

.btn-small { padding: 0.5rem 1.1rem; font-size: 0.85rem; }

/* --------------------------------------------------------------------------
   Header / nav
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 29, 46, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(94, 230, 216, 0.15);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.7rem;
}

.brand { display: flex; align-items: center; gap: 0.7rem; color: #fff; }
.brand .logo { color: #fff; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
.brand-tag { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.08em; color: var(--aqua); }

.nav-menu { display: flex; align-items: center; gap: 1.4rem; }

.nav-link {
  color: #D7E5EA;
  font-weight: 500;
  font-size: 0.95rem;
  padding-block: 0.3rem;
  border-bottom: 2px solid transparent;
}
.nav-link:hover { color: #fff; }
.nav-link.is-active { color: var(--aqua); border-bottom-color: var(--aqua); }

.lang-switch {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #7A93A3;
  display: flex;
  gap: 0.35rem;
  align-items: center;
}
.lang-switch a { color: #7A93A3; padding: 0.2rem 0.15rem; }
.lang-switch a:hover { color: #fff; }
.lang-switch a.is-on { color: var(--aqua); font-weight: 500; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.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); }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(15, 163, 177, 0.35), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(94, 230, 216, 0.14), transparent 60%),
    var(--ink);
  color: #C9DAE2;
  padding-block: 6.5rem 5rem;
}

.hero-inner { max-width: 780px; }

.hero .eyebrow { color: var(--aqua); }

.hero-title { color: #fff; margin-bottom: 1.3rem; }
.hero-title .accent {
  background: linear-gradient(90deg, var(--teal), var(--aqua));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub { font-size: 1.15rem; max-width: 640px; margin-bottom: 2.2rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 3.5rem; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  border-top: 1px solid rgba(94, 230, 216, 0.2);
  padding-top: 1.8rem;
}
.stat { display: flex; flex-direction: column; }
.stat-n { font-family: var(--font-display); font-size: 1.8rem; font-weight: 700; color: var(--aqua); }
.stat-l { font-size: 0.85rem; max-width: 180px; }

/* --------------------------------------------------------------------------
   Sections & cards
   -------------------------------------------------------------------------- */

.section { padding-block: 5rem; }
.section-alt { background: var(--mist); }

.page-head {
  background:
    radial-gradient(700px 380px at 90% -20%, rgba(15, 163, 177, 0.3), transparent 60%),
    var(--ink);
  color: #C9DAE2;
  padding-block: 4.5rem 3.5rem;
}
.page-head h1 { color: #fff; margin-bottom: 1rem; }
.page-head .eyebrow { color: var(--aqua); }
.page-sub { font-size: 1.1rem; max-width: 720px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--teal);
  box-shadow: 0 12px 30px rgba(10, 29, 46, 0.08);
}

.card-tags {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--teal-dark);
  margin-top: auto;
  padding-top: 1rem;
  letter-spacing: 0.02em;
}

.center-link { text-align: center; margin-top: 2.2rem; }
.link-arrow { font-family: var(--font-display); font-weight: 600; }
.link-arrow:hover { color: var(--teal); }

/* Why us */

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem 3rem;
  margin-top: 2rem;
}
.why-item { border-left: 3px solid var(--teal); padding-left: 1.2rem; }

/* CTA band */

.cta-band {
  background: linear-gradient(115deg, var(--ink) 0%, var(--ink-soft) 55%, var(--teal-dark) 130%);
}
.cta-inner { text-align: center; max-width: 640px; }
.cta-inner h2 { color: #fff; }
.cta-inner p { color: #C9DAE2; margin-bottom: 1.8rem; }

/* Process */

.process {
  list-style: none;
  margin-top: 2rem;
  display: grid;
  gap: 1.6rem;
  max-width: 760px;
}
.process-step { display: flex; gap: 1.2rem; align-items: flex-start; }
.process-n {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--teal-dark);
  border: 1.5px solid var(--teal);
  border-radius: 50%;
  width: 2.2rem; height: 2.2rem;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

/* --------------------------------------------------------------------------
   About
   -------------------------------------------------------------------------- */

.about-story { line-height: 1.75; }

.mv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
}
.mv-card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
}
.mv-values ul { list-style: none; display: grid; gap: 0.7rem; }
.mv-values li { padding-left: 1.3rem; position: relative; }
.mv-values li::before {
  content: "»";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-family: var(--font-mono);
}

.founders {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.6rem;
  margin-top: 2rem;
  max-width: 860px;
}
.founder {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
}
.founder-avatar {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: #fff;
  background: linear-gradient(135deg, var(--teal), var(--aqua));
  width: 64px; height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-bottom: 1.2rem;
}
.founder-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal-dark);
  margin-bottom: 0.8rem;
  letter-spacing: 0.03em;
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 3rem;
}

.contact-form { display: flex; flex-direction: column; gap: 0.4rem; }
.contact-form label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  margin-top: 1rem;
}
.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  padding: 0.75rem 0.9rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
  transition: border-color 0.15s ease;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  outline: none;
}
.contact-form .btn { margin-top: 1.6rem; align-self: flex-start; }

.form-notice {
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
}
.form-notice.is-ok { background: #E2F7F0; color: #0B6B54; border: 1px solid #9BE3CC; }
.form-notice.is-error { background: #FDECEC; color: #A03030; border: 1px solid #F2BABA; }

.hp-field { position: absolute; left: -9999px; top: -9999px; }

.contact-aside { display: flex; flex-direction: column; gap: 2rem; }
.contact-block { border-left: 3px solid var(--teal); padding-left: 1.2rem; }
.contact-mail { font-family: var(--font-display); font-weight: 600; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  background: var(--ink);
  color: #9FB6C2;
  padding-top: 3.5rem;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}
.footer-grid a { display: block; color: #9FB6C2; padding-block: 0.2rem; }
.footer-grid a:hover { color: var(--aqua); }

.brand-footer { margin-bottom: 0.8rem; }
.footer-tag { max-width: 320px; }

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 0.7rem;
}

.footer-bottom {
  border-top: 1px solid rgba(159, 182, 194, 0.18);
  padding-block: 1.4rem;
  font-size: 0.82rem;
}

/* --------------------------------------------------------------------------
   Reveal animation (respects reduced motion)
   -------------------------------------------------------------------------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 860px) {
  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.2rem 24px 1.6rem;
    gap: 0.9rem;
    border-bottom: 1px solid rgba(94, 230, 216, 0.15);
  }
  .nav-menu.is-open { display: flex; }

  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .hero { padding-block: 4.5rem 3.5rem; }
  .section { padding-block: 3.5rem; }
}