/* ================================================================
   SENUSA 2.0 — Estilos globales
   Paleta: bg #f1efe7 · alt #e9e7de · dark #272525 · muted #706d6d
   Tipografía: Glacial Indifference (títulos) + Montserrat (cuerpo)
================================================================ */

/* ── Variables ────────────────────────────────────────────── */
:root {
  --bg:       #f1efe7;
  --bg-alt:   #e9e7de;
  --dark:     #272525;
  --light:    #f1efe7;
  --muted:    #706d6d;
  --border:   rgba(39,37,37,.13);
  --head:     'Glacial Indifference', 'Jost', sans-serif;
  --body:     'Montserrat', system-ui, sans-serif;
  --r:        8px;
  --r-lg:     16px;
  --nav-h:    80px;
  --max:      1240px;
  --ease:     cubic-bezier(.4,0,.2,1);
  --t:        .26s;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html   { scroll-behavior: smooth; }
body   {
  background: var(--bg);
  color: var(--dark);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img    { display: block; max-width: 100%; }
a      { color: inherit; text-decoration: none; }
ul     { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Tipografía ───────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--head);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -.02em;
}
h1 { font-size: clamp(3rem, 6.5vw, 5.5rem); }
h2 { font-size: clamp(2.2rem, 4vw, 3.4rem); }
h3 { font-size: 1.1rem; font-weight: 700; font-family: var(--body); letter-spacing: 0; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: .5em;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before, .eyebrow::after { content: "✦"; opacity: .5; font-size: .65em; }
.eyebrow.center  { justify-content: center; }

/* ── Layout ───────────────────────────────────────────────── */
.wrap        { max-width: var(--max);  margin: 0 auto; padding: 0 clamp(1.25rem,4vw,2.5rem); }
.wrap-narrow { max-width: 760px;       margin: 0 auto; padding: 0 clamp(1.25rem,4vw,2.5rem); }

section       { padding: clamp(5rem,10vw,9rem) 0; }
section.alt   { background: var(--bg-alt); }
section.dark  { background: var(--dark); color: var(--light); }

/* ── Botones ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: .8rem 1.7rem;
  border-radius: var(--r);
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background var(--t) var(--ease), transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.btn-dark {
  background: var(--dark);
  color: var(--light);
}
.btn-dark:hover {
  background: #3a3737;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(39,37,37,.18);
}
.btn-light {
  background: var(--light);
  color: var(--dark);
}
.btn-light:hover {
  background: #e4e2da;
  transform: translateY(-2px);
}

/* ── Placeholder imagen ───────────────────────────────────── */
.ph {
  background: var(--bg-alt);
  border: 2px dashed rgba(39,37,37,.15);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  color: var(--muted);
  font-size: .82rem;
  text-align: center;
  padding: 2rem;
}
.ph svg      { opacity: .3; }
.ph-hero     { min-height: clamp(260px,35vw,460px); max-width: 900px; margin: 0 auto; }
.ph-med      { min-height: clamp(240px,30vw,380px); }
.ph-sm       { min-height: 200px; }

/* ── Navegación ───────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  background: rgba(241,239,231,.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t) var(--ease);
}
.site-nav.scrolled { border-bottom-color: var(--border); }

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem,4vw,2.5rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: .7rem;
  flex-shrink: 0;
}
.logo-name {
  font-family: var(--head);
  font-size: 1.3rem;
  letter-spacing: .12em;
}

.nav-links {
  display: flex;
  gap: clamp(1.5rem,2.5vw,2.8rem);
  align-items: center;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .03em;
  position: relative;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--dark);
  transition: width var(--t) var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: .4rem;
}
.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--dark);
  transition: var(--t) var(--ease);
}

/* Menú mobile */
.mob-overlay {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  z-index: 190;
  background: var(--bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.mob-overlay.open { display: flex; }
.mob-overlay a {
  font-family: var(--head);
  font-size: clamp(1.8rem,5vw,2.3rem);
}
.mob-close {
  position: absolute;
  top: 1.4rem; right: 1.6rem;
  background: none;
  border: none;
  cursor: pointer;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  padding-top: calc(var(--nav-h) + clamp(4rem,7vw,6rem));
  padding-bottom: clamp(4rem,7vw,6rem);
  text-align: center;
}
.hero .eyebrow  { justify-content: center; margin-bottom: 2rem; }
.hero h1        { max-width: 920px; margin: 0 auto 1.5rem; }
.hero .sub      { max-width: 580px; margin: 0 auto 3rem; color: var(--muted); font-size: 1.12rem; line-height: 1.8; }
.hero-img       { margin-top: clamp(3rem,6vw,5rem); }

/* Hero de páginas internas */
.page-hero {
  padding-top: calc(var(--nav-h) + clamp(4rem,7vw,5.5rem));
  padding-bottom: clamp(4rem,6vw,5.5rem);
  text-align: center;
}
.page-hero .eyebrow { justify-content: center; margin-bottom: 1.25rem; }
.page-hero h1       { max-width: 720px; margin: 0 auto 1.25rem; }
.page-hero .sub     { max-width: 540px; margin: 0 auto; color: var(--muted); font-size: 1.05rem; line-height: 1.8; }

/* ── Grid servicios ───────────────────────────────────────── */
.svc-header { text-align: center; margin-bottom: clamp(2.5rem,5vw,4rem); }
.svc-header .eyebrow { justify-content: center; margin-bottom: .6rem; }
.svc-header p { color: var(--muted); max-width: 440px; margin: 0 auto; font-size: .95rem; }

.svc-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: clamp(1.5rem,4vw,3rem) clamp(2rem,5vw,4rem);
}
.svc-card  { border-top: 1.5px solid var(--border); padding-top: 1.75rem; }
.svc-num   { font-size: .72rem; font-weight: 600; letter-spacing: .14em; color: var(--muted); margin-bottom: .9rem; display: block; }
.svc-card h3 { margin-bottom: .6rem; line-height: 1.35; font-size: 1.05rem; }
.svc-card p  { font-size: .93rem; color: var(--muted); line-height: 1.85; }

/* ── Split (2 columnas texto+imagen) ─────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2.5rem,6vw,6rem);
}
.split.rev .split-img { order: -1; }

.split-content .eyebrow  { margin-bottom: 1.25rem; }
.split-content h2        { margin-bottom: 1.25rem; }
.split-content p         { color: var(--muted); font-size: 1rem; margin-bottom: .95rem; line-height: 1.85; }
.split-content .btn      { margin-top: 1.75rem; }

/* ── Checklist ────────────────────────────────────────────── */
.checklist { display: flex; flex-direction: column; gap: .75rem; margin-top: 1.4rem; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  font-size: .95rem;
  line-height: 1.6;
}
.checklist li::before {
  content: "✓";
  flex-shrink: 0;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--dark);
  color: var(--light);
  font-size: .62rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.dark .checklist li::before {
  background: var(--light);
  color: var(--dark);
}

/* ── Método 4 pasos ───────────────────────────────────────── */
.method-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 2px;
  background: var(--border);
  margin-top: clamp(2.5rem,5vw,4rem);
}
.method-step { background: var(--bg); padding: 2.25rem 1.75rem; }
.step-n { font-size: .68rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: .9rem; }
.method-step h3 { margin-bottom: .45rem; font-size: .95rem; font-weight: 700; font-family: var(--body); }
.method-step p  { font-size: .85rem; color: var(--muted); line-height: 1.75; }

/* ── Pilares ──────────────────────────────────────────────── */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 2px;
  background: var(--border);
}
.pillar {
  background: var(--bg-alt);
  padding: clamp(2rem,4vw,3.5rem) clamp(1.5rem,3vw,2.5rem);
}
.pillar-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  margin-bottom: 1.4rem;
}
.pillar h3 { margin-bottom: .65rem; }
.pillar p  { font-size: .88rem; color: var(--muted); line-height: 1.8; }

/* ── Testimonial ──────────────────────────────────────────── */
.t-quote {
  font-family: var(--head);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-style: italic;
  line-height: 1.25;
  text-align: center;
  max-width: 820px;
  margin: 0 auto 2.5rem;
}
.t-source { display: flex; flex-direction: column; align-items: center; gap: .15rem; }
.t-name   { font-size: .88rem; font-weight: 600; }
.t-role   { font-size: .76rem; color: rgba(241,239,231,.4); font-weight: 300; }
.t-divider { width: 1px; height: 60px; background: rgba(241,239,231,.15); margin: 2.75rem auto; }

/* ── CTA section ──────────────────────────────────────────── */
.cta-section { text-align: center; }
.cta-section .eyebrow { justify-content: center; margin-bottom: 1.25rem; }
.cta-section h2 { max-width: 520px; margin: 0 auto 1rem; }
.cta-section p  { color: var(--muted); max-width: 400px; margin: 0 auto 2rem; font-size: .95rem; }

/* ── Logos clientes ───────────────────────────────────────── */
.logo-ph {
  background: var(--bg);
  border: 1.5px dashed var(--border);
  border-radius: var(--r);
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .78rem;
  color: var(--muted);
}
.logos-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 1.25rem;
}

/* ── Galería ──────────────────────────────────────────────── */
.gal-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1.25rem;
}
.gal-item {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-alt);
  border: 2px dashed var(--border);
  min-height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: .5rem;
  color: var(--muted);
  font-size: .82rem;
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--t) var(--ease);
}
.gal-item:hover { border-color: rgba(39,37,37,.3); }

/* ── Misión / Visión ──────────────────────────────────────── */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  margin-top: 3rem;
}
.mv-block { background: var(--bg-alt); padding: clamp(2rem,4vw,3rem); }
.mv-block .eyebrow { margin-bottom: 1rem; }
.mv-block h3 { margin-bottom: .75rem; font-family: var(--head); font-size: clamp(1.3rem,2vw,1.8rem); font-weight: 400; }
.mv-block p  { font-size: .9rem; color: var(--muted); line-height: 1.8; }

/* ── Formulario de contacto ───────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem,6vw,6rem);
  align-items: start;
}
.c-info .eyebrow  { margin-bottom: 1.1rem; }
.c-info h2        { margin-bottom: .85rem; }
.c-info > p       { color: var(--muted); font-size: .95rem; margin-bottom: 2rem; }
.c-details        { display: flex; flex-direction: column; gap: .8rem; }
.c-item           { display: flex; align-items: center; gap: .75rem; font-size: .88rem; }
.c-item svg       { opacity: .4; flex-shrink: 0; }

.form { display: flex; flex-direction: column; gap: .9rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
.form-group { display: flex; flex-direction: column; gap: .3rem; }
.form-group label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: var(--r);
  padding: .75rem 1rem;
  font-family: var(--body);
  font-size: .88rem;
  color: var(--dark);
  outline: none;
  width: 100%;
  transition: border-color var(--t) var(--ease);
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--dark); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23706d6d' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
.form-msg { text-align: center; font-size: .85rem; color: var(--muted); min-height: 1.5rem; }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  background: var(--dark);
  color: var(--light);
  padding: clamp(3rem,6vw,5rem) 0 clamp(1.5rem,3vw,2.5rem);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: clamp(2rem,4vw,3rem);
  padding-bottom: clamp(2rem,4vw,3rem);
  border-bottom: 1px solid rgba(241,239,231,.1);
  margin-bottom: 1.5rem;
}
.footer-brand .logo-name { color: var(--light); }
.footer-brand p {
  margin-top: 1rem;
  font-size: .82rem;
  color: rgba(241,239,231,.4);
  line-height: 1.75;
  max-width: 240px;
}
.footer-col h6 {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(241,239,231,.3);
  margin-bottom: 1.25rem;
}
.footer-links { display: flex; flex-direction: column; gap: .55rem; }
.footer-links a, .footer-links span {
  font-size: .84rem;
  color: rgba(241,239,231,.5);
  transition: color var(--t);
}
.footer-links a:hover { color: var(--light); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .76rem;
  color: rgba(241,239,231,.28);
}
.footer-social { display: flex; gap: 1.25rem; }
.footer-social a { color: rgba(241,239,231,.35); transition: color var(--t); }
.footer-social a:hover { color: var(--light); }

/* ── WhatsApp FAB ─────────────────────────────────────────── */
.wa-fab {
  position: fixed;
  bottom: 1.75rem; right: 1.75rem;
  z-index: 300;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 22px rgba(37,211,102,.38);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.wa-fab:hover { transform: scale(1.08); box-shadow: 0 6px 30px rgba(37,211,102,.48); }

/* ── Fade-in scroll ───────────────────────────────────────── */
.fu { opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.fu.on  { opacity: 1; transform: none; }
.fu.d1  { transition-delay: .08s; }
.fu.d2  { transition-delay: .16s; }
.fu.d3  { transition-delay: .24s; }
.fu.d4  { transition-delay: .32s; }
/* Fallback: si JS no activa las animaciones, mostrar contenido tras 1.5s */
@keyframes fu-show { to { opacity: 1; transform: none; } }
.fu { animation: fu-show 0s 1.5s forwards; }
.fu.on { animation: none; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .svc-grid       { grid-template-columns: repeat(2,1fr); }
  .split          { grid-template-columns: 1fr; }
  .split.rev .split-img { order: 0; }
  .method-grid    { grid-template-columns: repeat(2,1fr); }
  .pillars-grid   { grid-template-columns: 1fr; }
  .contact-grid   { grid-template-columns: 1fr; }
  .footer-grid    { grid-template-columns: 1fr 1fr; }
  .logos-grid     { grid-template-columns: repeat(2,1fr); }
  .gal-grid       { grid-template-columns: repeat(2,1fr); }
  .mv-grid        { grid-template-columns: 1fr; }
  .form-row       { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger   { display: flex; }
  .svc-grid    { grid-template-columns: 1fr; }
  .method-grid { grid-template-columns: 1fr; background: none; gap: 0; }
  .method-step { border-bottom: 1px solid var(--border); }
  .logos-grid  { grid-template-columns: repeat(2,1fr); }
  .gal-grid    { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* ── Logo PNG overrides ───────────────────────────────────── */
.logo img { height: 113px; width: auto; object-fit: contain; margin-top: 6px; }
.site-footer .logo img { height: 138px; filter: invert(1) brightness(1.15); margin-top: 0; }

/* ── Desktop nav: logo fits without being cut ──────────────── */
@media (min-width: 601px) {
  :root { --nav-h: 140px; }
  .logo img { height: 140px; margin-top: 0; }
}