/* ===================================================================
   SULCA Transporte y Maniobras — v2
   Rebrand amarillo / negro basado en la presentación TYM SULCA 2026
   =================================================================== */

/* ===== VARIABLES ===== */
:root {
  --black:   #0d0d0d;   /* fondo principal oscuro */
  --ink:     #161616;   /* secciones oscuras alternas */
  --ink-2:   #1f1f1f;   /* tarjetas oscuras */
  --yellow:  #f5b301;   /* acento principal */
  --yellow-2:#ffc61a;   /* acento claro / hover */
  --amber:   #e89b00;   /* acento profundo */
  --light:   #f6f6f4;   /* fondo claro */
  --gray:    #ededea;   /* fondo gris claro */
  --text:    #1a1a1a;   /* texto sobre claro */
  --muted:   #5d5d5d;   /* texto secundario */
  --white:   #ffffff;
  --line:    rgba(255,255,255,.12);

  --font-display: 'Anton', 'Montserrat', sans-serif;
  --font-body:    'Montserrat', 'Open Sans', sans-serif;

  --maxw: 1200px;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0,0,0,.18);
  --shadow-lg: 0 30px 70px rgba(0,0,0,.30);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 92%; max-width: var(--maxw); margin: 0 auto; }

/* ===== HAZARD STRIPE (cinta de peligro) ===== */
.hazard {
  height: 14px;
  background: repeating-linear-gradient(45deg,
    var(--yellow) 0, var(--yellow) 22px,
    #111 22px, #111 44px);
}

/* ===== DISPLAY TITLES (dos tonos estilo PPT) ===== */
.display {
  font-family: var(--font-display);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: .5px;
  line-height: .98;
  font-size: clamp(2rem, 5vw, 3.4rem);
}
.display .hl {
  display: inline-block;
  background: var(--yellow);
  color: #111;
  padding: .04em .35em .12em;
  border-radius: .35em;
  margin-left: .12em;
}
.display.on-dark { color: var(--white); }
.display.on-light { color: var(--black); }

.section-header { text-align: center; margin-bottom: 3rem; }
.section-header .eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: .9rem;
}
.section-header.light .eyebrow { color: var(--yellow); }
.section-header p.sub {
  max-width: 640px;
  margin: 1.1rem auto 0;
  color: var(--muted);
}
.section-header.light p.sub { color: rgba(255,255,255,.72); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: .95rem 2rem;
  border-radius: 50px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .25s var(--ease), background .25s, color .25s, box-shadow .25s;
}
.btn-primary {
  background: var(--yellow);
  color: #111;
  box-shadow: 0 10px 26px rgba(245,179,1,.35);
}
.btn-primary:hover { background: var(--yellow-2); transform: translateY(-3px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.6);
}
.btn-outline:hover { background: var(--white); color: #111; border-color: var(--white); transform: translateY(-3px); }
.btn-dark { background: #111; color: var(--white); }
.btn-dark:hover { background: #000; transform: translateY(-3px); }
.btn-full { width: 100%; text-align: center; }

/* ===== SECTIONS ===== */
.section { padding: 6rem 0; position: relative; }
.section-light { background: var(--light); }
.section-gray  { background: var(--gray); }
.section-dark  { background: var(--black); color: var(--white); }

/* ===== HEADER ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%;
  z-index: 1000;
  padding: .85rem 0;
  background: rgba(13,13,13,.55);
  backdrop-filter: blur(8px);
  transition: background .35s, padding .35s, box-shadow .35s;
}
.site-header.scrolled {
  background: rgba(13,13,13,.96);
  padding: .55rem 0;
  box-shadow: 0 6px 24px rgba(0,0,0,.4);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }

/* Logo */
.logo { display: flex; align-items: center; gap: .65rem; }
.logo-mark {
  background: var(--yellow);
  color: #111;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1;
  letter-spacing: 1px;
  padding: .38rem .55rem .3rem;
  border-radius: 6px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-text b { color: var(--white); font-weight: 800; font-size: .92rem; letter-spacing: .5px; }
.logo-text span { color: var(--yellow); font-size: .66rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; }

/* Nav */
.main-nav { display: flex; gap: 1.7rem; align-items: center; }
.main-nav a {
  color: rgba(255,255,255,.85);
  font-weight: 600;
  font-size: .9rem;
  position: relative;
  padding: .3rem 0;
  transition: color .25s;
}
.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: -3px;
  width: 0; height: 2px; background: var(--yellow);
  transition: width .3s var(--ease);
}
.main-nav a:hover, .main-nav a.active { color: var(--yellow); }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span { width: 26px; height: 3px; background: var(--white); border-radius: 3px; transition: .3s; }

/* ===== HERO SLIDER ===== */
.hero { position: relative; height: 100vh; min-height: 620px; overflow: hidden; }
.slider { width: 100%; height: 100%; }
.slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1.1s var(--ease);
  display: flex; align-items: center;
}
.slide.active { opacity: 1; }
.slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(13,13,13,.85) 0%, rgba(13,13,13,.52) 46%, rgba(13,13,13,.12) 100%);
}
.slide-content {
  position: relative; z-index: 2;
  width: 92%; max-width: var(--maxw); margin: 0 auto;
  color: var(--white);
}
.slide-content .kicker {
  display: inline-block;
  background: var(--yellow); color: #111;
  font-weight: 800; font-size: .78rem; letter-spacing: 2px; text-transform: uppercase;
  padding: .4rem .9rem; border-radius: 4px; margin-bottom: 1.3rem;
}
.slide-content h1 {
  font-family: var(--font-display); font-weight: 400;
  text-transform: uppercase; line-height: .96;
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  max-width: 16ch; margin-bottom: 1.1rem;
}
.slide-content h1 em { color: var(--yellow); font-style: normal; }
.slide-content p { font-size: clamp(1rem, 1.6vw, 1.25rem); max-width: 46ch; color: rgba(255,255,255,.88); margin-bottom: 2rem; }
.slide-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.slider-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  z-index: 5; background: rgba(255,255,255,.12); color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  width: 50px; height: 50px; border-radius: 50%;
  font-size: 1.1rem; cursor: pointer; transition: background .25s;
}
.slider-btn:hover { background: var(--yellow); color: #111; border-color: var(--yellow); }
.slider-btn.prev { left: 24px; } .slider-btn.next { right: 24px; }
.slider-dots { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 11px; }
.dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid #fff; background: transparent; cursor: pointer; transition: .25s; }
.dot.active { background: var(--yellow); border-color: var(--yellow); transform: scale(1.15); }

/* ===== STATS BAR ===== */
.stats-bar { background: var(--yellow); color: #111; padding: 2.4rem 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
.stat strong { font-family: var(--font-display); font-size: clamp(2.2rem, 4vw, 3.2rem); display: block; line-height: 1; }
.stat span { font-weight: 700; font-size: .85rem; text-transform: uppercase; letter-spacing: 1px; }
.stat + .stat { border-left: 2px solid rgba(0,0,0,.15); }

/* ===== ABOUT / QUIÉNES SOMOS ===== */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; align-items: center; }
.about-text .lead { font-size: 1.12rem; color: var(--text); margin-bottom: 1.2rem; }
.about-text p { color: var(--muted); margin-bottom: 1rem; }
.about-media { position: relative; }
.about-media img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: 100%; object-fit: cover; }
.about-media .badge {
  position: absolute; bottom: -22px; left: -22px;
  background: var(--yellow); color: #111; border-radius: var(--radius);
  padding: 1.1rem 1.4rem; box-shadow: var(--shadow); text-align: center;
}
.about-media .badge b { font-family: var(--font-display); font-size: 2.2rem; line-height: 1; display: block; }
.about-media .badge span { font-weight: 700; font-size: .72rem; text-transform: uppercase; letter-spacing: 1px; }

/* ===== VISIÓN & MISIÓN ===== */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; margin-top: 3rem; }
.vm-card {
  background: var(--ink-2); color: #fff; border-radius: var(--radius);
  padding: 2.3rem; border-top: 4px solid var(--yellow);
  position: relative; overflow: hidden;
}
.vm-card h3 { font-family: var(--font-display); color: var(--yellow); font-size: 1.7rem; text-transform: uppercase; margin-bottom: .9rem; letter-spacing: .5px; }
.vm-card p { color: rgba(255,255,255,.82); }
.vm-card .vm-ico { position: absolute; right: 1.2rem; top: 1rem; font-size: 3.4rem; opacity: .12; }

/* ===== EXPERIENCIA / HISTORIA ===== */
.exp-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 3rem; align-items: center; }
.exp-media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; }
.exp-text p { color: rgba(255,255,255,.8); margin-bottom: 1.1rem; }
.exp-text .timeline { margin-top: 1.6rem; display: grid; gap: .9rem; }
.exp-text .tl-item { display: flex; gap: 1rem; align-items: flex-start; }
.exp-text .tl-year {
  font-family: var(--font-display); color: #111; background: var(--yellow);
  border-radius: 6px; padding: .25rem .6rem; font-size: 1rem; min-width: 64px; text-align: center;
}
.exp-text .tl-item p { margin: 0; color: rgba(255,255,255,.85); font-size: .95rem; }

/* ===== POR QUÉ ELEGIRNOS ===== */
.why { position: relative; background-size: cover; background-position: center; background-attachment: fixed; }
.why-overlay { position: absolute; inset: 0; background: rgba(8,8,8,.82); }
.why .container { position: relative; z-index: 2; }
.why-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; }
.why-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 2.2rem 1.8rem; transition: transform .3s var(--ease), border-color .3s;
}
.why-card:hover { transform: translateY(-8px); border-color: var(--yellow); }
.why-card .num { font-family: var(--font-display); font-size: 2.6rem; color: var(--yellow); line-height: 1; margin-bottom: .6rem; }
.why-card h3 { color: #fff; font-size: 1.25rem; margin-bottom: .7rem; }
.why-card p { color: rgba(255,255,255,.72); font-size: .95rem; }

.lema {
  margin-top: 3rem; text-align: center;
  font-family: var(--font-display); text-transform: uppercase;
  font-size: clamp(1.3rem, 3.2vw, 2.2rem); color: var(--yellow);
  letter-spacing: 1px; line-height: 1.15;
}
.lema small { display: block; font-family: var(--font-body); font-weight: 600; font-size: .8rem; letter-spacing: 3px; color: rgba(255,255,255,.6); margin-top: .8rem; }

/* ===== SERVICIOS ===== */
.serv-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.6rem; }
.serv-card {
  background: #fff; border-radius: var(--radius); padding: 2.2rem 1.9rem;
  box-shadow: var(--shadow); border-bottom: 4px solid var(--yellow);
  transition: transform .3s var(--ease), box-shadow .3s;
}
.serv-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.serv-icon {
  width: 64px; height: 64px; border-radius: 16px; background: var(--yellow);
  display: grid; place-items: center; margin-bottom: 1.2rem;
  box-shadow: 0 8px 20px rgba(245,179,1,.35);
}
.serv-icon svg { width: 34px; height: 34px; stroke: #111; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.serv-card h3 { font-family: var(--font-display); text-transform: uppercase; font-size: 1.3rem; letter-spacing: .5px; margin-bottom: 1rem; color: #111; }
.serv-list li { position: relative; padding-left: 1.6rem; margin-bottom: .65rem; color: var(--muted); font-size: .95rem; }
.serv-list li::before { content: '▸'; position: absolute; left: 0; color: var(--amber); font-weight: 700; }

/* ===== PROYECTOS / TRABAJOS REALIZADOS ===== */
.proj-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; }
.proj-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  cursor: pointer; box-shadow: var(--shadow); aspect-ratio: 4/3; background: #111;
}
.proj-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.proj-card:hover img { transform: scale(1.08); }
.proj-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8,8,8,.92) 0%, rgba(8,8,8,.25) 55%, rgba(8,8,8,0) 100%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 1.4rem;
  transition: background .3s;
}
.proj-card:hover .proj-overlay { background: linear-gradient(to top, rgba(8,8,8,.95) 0%, rgba(8,8,8,.5) 60%, rgba(245,179,1,.15) 100%); }
.proj-tag {
  align-self: flex-start; background: var(--yellow); color: #111;
  font-family: var(--font-display); font-size: .8rem; letter-spacing: 1px;
  padding: .2rem .6rem; border-radius: 5px; margin-bottom: .7rem;
}
.proj-overlay h3 { color: #fff; font-size: 1rem; line-height: 1.3; margin-bottom: .35rem; font-weight: 700; }
.proj-overlay .client { color: var(--yellow-2); font-size: .82rem; font-weight: 600; }
.proj-overlay .zoom { position: absolute; top: 1.1rem; right: 1.1rem; width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.15); display: grid; place-items: center; color: #fff; opacity: 0; transition: opacity .3s; }
.proj-card:hover .zoom { opacity: 1; }
.proj-count { position: absolute; top: 1.1rem; left: 1.1rem; background: rgba(0,0,0,.6); color: #fff; font-size: .72rem; font-weight: 700; letter-spacing: .5px; padding: .25rem .6rem; border-radius: 50px; display: flex; align-items: center; gap: .3rem; }

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(8,8,8,.95); display: none;
  align-items: center; justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox-content { max-width: 88%; max-height: 86%; text-align: center; }
.lightbox-content img { max-width: 100%; max-height: 76vh; border-radius: 8px; margin: 0 auto; }
.lightbox-caption { color: #fff; margin-top: 1rem; font-weight: 600; }
.lightbox-caption span { display: block; color: var(--yellow); font-size: .85rem; margin-top: .25rem; }
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute; background: rgba(255,255,255,.12); color: #fff;
  border: none; cursor: pointer; width: 50px; height: 50px; border-radius: 50%;
  font-size: 1.3rem; transition: background .25s;
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: var(--yellow); color: #111; }
.lightbox-close { top: 24px; right: 24px; }
.lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }

/* ===== CLIENTES ===== */
.clients-logos {
  display: grid; grid-template-columns: repeat(6,1fr); gap: 1.1rem; margin-bottom: 3rem;
}
.client-logo {
  background: #fff; border-radius: 10px; padding: 1.1rem; height: 92px;
  display: grid; place-items: center; box-shadow: 0 6px 18px rgba(0,0,0,.06);
  transition: transform .25s;
}
.client-logo:hover { transform: translateY(-4px); }
.client-logo img { max-height: 100%; width: auto; object-fit: contain; filter: grayscale(1); opacity: .8; transition: .3s; }
.client-logo:hover img { filter: grayscale(0); opacity: 1; }

.clients-list-title { font-family: var(--font-display); text-transform: uppercase; color: #111; font-size: 1.2rem; margin-bottom: 1.6rem; text-align: center; letter-spacing: .5px; }
.clients-marquee { display: flex; flex-direction: column; gap: 1rem; overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent); }
.marquee-row { display: flex; gap: 1rem; width: max-content; animation: marquee 70s linear infinite; }
.marquee-row.rev { animation-direction: reverse; }
.clients-marquee:hover .marquee-row { animation-play-state: paused; }
.client-chip { background: #fff; border-radius: 50px; padding: .6rem 1.35rem; white-space: nowrap;
  font-weight: 600; font-size: .9rem; color: #3a3a3a; box-shadow: 0 4px 14px rgba(0,0,0,.06); border-left: 3px solid var(--yellow); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee-row { animation: none; flex-wrap: wrap; }
  .clients-marquee { -webkit-mask-image: none; mask-image: none; }
}

/* ===== CONTACTO ===== */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2.6rem; }
.contact-info { background: var(--ink-2); color: #fff; border-radius: var(--radius); padding: 2.4rem; }
.contact-info h3 { font-family: var(--font-display); text-transform: uppercase; color: var(--yellow); font-size: 1.5rem; margin-bottom: 1.6rem; letter-spacing: .5px; }
.contact-item { display: flex; gap: 1rem; margin-bottom: 1.4rem; align-items: flex-start; }
.contact-item .ico { flex-shrink: 0; width: 42px; height: 42px; border-radius: 10px; background: var(--yellow); color: #111; display: grid; place-items: center; font-size: 1.15rem; }
.contact-item strong { display: block; font-size: .82rem; text-transform: uppercase; letter-spacing: 1px; color: var(--yellow-2); margin-bottom: .15rem; }
.contact-item p, .contact-item a { color: rgba(255,255,255,.85); font-size: .95rem; }
.contact-item a:hover { color: var(--yellow); }

.contact-form { background: #fff; border-radius: var(--radius); padding: 2.4rem; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-weight: 600; font-size: .85rem; margin-bottom: .4rem; color: #333; }
.form-group input, .form-group textarea {
  width: 100%; padding: .8rem 1rem; border: 1.5px solid #dcdcdc; border-radius: 9px;
  font-family: var(--font-body); font-size: .95rem; transition: border-color .25s, box-shadow .25s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--yellow); box-shadow: 0 0 0 3px rgba(245,179,1,.18); }
.form-note { margin-top: 1rem; font-size: .9rem; text-align: center; min-height: 1.2em; }

/* ===== FOOTER ===== */
.site-footer { background: var(--black); color: rgba(255,255,255,.78); padding-top: 3.4rem; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 2.4rem; padding-bottom: 2.6rem; }
.footer-brand .logo { margin-bottom: 1rem; }
.footer-brand p { font-size: .92rem; color: rgba(255,255,255,.6); max-width: 34ch; }
.footer-col h4 { font-family: var(--font-display); text-transform: uppercase; color: var(--yellow); font-size: 1.05rem; letter-spacing: 1px; margin-bottom: 1rem; }
.footer-col a, .footer-col p { display: block; color: rgba(255,255,255,.68); font-size: .92rem; margin-bottom: .55rem; }
.footer-col a:hover { color: var(--yellow); }
.footer-bottom { border-top: 1px solid var(--line); padding: 1.3rem 0; }
.footer-bottom p { text-align: center; font-size: .85rem; color: rgba(255,255,255,.5); }

/* ===== WIDGET WHATSAPP ===== */
/* el atributo hidden debe ganar sobre los display: flex de abajo */
.wa-widget [hidden] { display: none !important; }
.wa-widget {
  position: fixed; bottom: 24px; right: 24px; z-index: 950;
  display: flex; flex-direction: column; align-items: flex-end; gap: .7rem;
}
.wa-float {
  width: 58px; height: 58px; border-radius: 50%; background: #25d366; color: #fff;
  display: grid; place-items: center; border: 0; cursor: pointer;
  box-shadow: 0 10px 26px rgba(37,211,102,.45);
  transition: transform .25s var(--ease), box-shadow .25s;
}
.wa-float svg { width: 34px; height: 34px; }
.wa-float:hover { transform: scale(1.08); box-shadow: 0 14px 32px rgba(37,211,102,.55); }
.wa-float:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.wa-widget.open .wa-float svg { transform: rotate(90deg) scale(.85); opacity: .85; transition: transform .3s var(--ease); }
/* respaldo sin JS */
.wa-float-static { position: fixed; bottom: 24px; right: 24px; z-index: 950; }

/* globo de llamada a la acción */
.wa-cta {
  display: flex; align-items: center; gap: .5rem; max-width: 250px;
  background: #fff; color: #1f1f1f; padding: .7rem .8rem .7rem 1rem;
  border-radius: 14px 14px 4px 14px; font-size: .87rem; line-height: 1.35;
  box-shadow: 0 12px 30px rgba(0,0,0,.18);
  animation: waPop .4s var(--ease) both;
}
.wa-cta-close {
  border: 0; background: none; cursor: pointer; color: #999;
  font-size: 1.15rem; line-height: 1; padding: 0 .1rem;
}
.wa-cta-close:hover { color: #444; }

/* panel de chat */
.wa-panel {
  width: min(320px, calc(100vw - 40px));
  background: #fff; border-radius: 16px; overflow: hidden;
  box-shadow: 0 20px 50px rgba(0,0,0,.28);
  animation: waPop .35s var(--ease) both;
}
.wa-panel-head {
  display: flex; align-items: center; gap: .7rem;
  background: #075e54; color: #fff; padding: .85rem 1rem;
}
.wa-avatar {
  width: 40px; height: 40px; border-radius: 50%; background: #25d366;
  display: grid; place-items: center; flex-shrink: 0;
}
.wa-avatar svg { width: 26px; height: 26px; }
.wa-panel-id { flex: 1; min-width: 0; }
.wa-panel-id strong { display: block; font-size: .9rem; font-weight: 600; }
.wa-online { font-size: .75rem; color: rgba(255,255,255,.75); }
.wa-online::before {
  content: ''; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: #4ade80; margin-right: .35rem; vertical-align: middle;
}
.wa-close {
  border: 0; background: none; color: rgba(255,255,255,.8); cursor: pointer;
  font-size: 1.5rem; line-height: 1; padding: 0 .2rem;
}
.wa-close:hover { color: #fff; }
.wa-panel-body {
  background: #ece5dd; padding: 1rem; min-height: 120px;
  display: flex; flex-direction: column; justify-content: center;
}
.wa-bubble {
  position: relative; background: #fff; border-radius: 4px 12px 12px 12px;
  padding: .75rem .85rem; box-shadow: 0 2px 6px rgba(0,0,0,.1);
  animation: waPop .3s var(--ease) both;
}
.wa-bubble strong { display: block; font-size: .93rem; margin-bottom: .25rem; color: #1f1f1f; }
.wa-bubble p { font-size: .85rem; line-height: 1.5; color: #4a4a4a; margin: 0; }
.wa-time { display: block; text-align: right; font-size: .68rem; color: #9aa0a6; margin-top: .35rem; }
.wa-typing { display: flex; gap: .3rem; padding: .8rem .9rem; background: #fff; border-radius: 12px; width: max-content; box-shadow: 0 2px 6px rgba(0,0,0,.1); }
.wa-typing span {
  width: 7px; height: 7px; border-radius: 50%; background: #b6bcc2;
  animation: waTyping 1.1s infinite ease-in-out;
}
.wa-typing span:nth-child(2) { animation-delay: .18s; }
.wa-typing span:nth-child(3) { animation-delay: .36s; }
.wa-panel-cta {
  display: block; text-align: center; background: #25d366; color: #fff;
  font-weight: 700; font-size: .93rem; padding: .9rem 1rem; letter-spacing: .02em;
}
.wa-panel-cta:hover { background: #1eb95a; color: #fff; }

@keyframes waPop {
  from { opacity: 0; transform: translateY(12px) scale(.96); }
  to   { opacity: 1; transform: none; }
}
@keyframes waTyping {
  0%, 60%, 100% { transform: translateY(0); opacity: .5; }
  30%           { transform: translateY(-4px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .wa-cta, .wa-panel, .wa-bubble { animation: none; }
  .wa-typing span { animation: none; }
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed; bottom: 96px; right: 29px; z-index: 900;
  width: 48px; height: 48px; border-radius: 50%; background: var(--yellow); color: #111;
  display: grid; place-items: center; font-size: 1.4rem; font-weight: 700;
  opacity: 0; pointer-events: none; transition: opacity .3s, transform .25s;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }
.back-to-top:hover { transform: translateY(-4px); }

/* ===== REVEAL ANIM (solo si JS está activo) ===== */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .about-grid, .exp-grid, .contact-layout { grid-template-columns: 1fr; }
  .vm-grid { grid-template-columns: 1fr; }
  .why-grid, .serv-grid, .proj-grid { grid-template-columns: repeat(2,1fr); }
  .clients-logos { grid-template-columns: repeat(4,1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .exp-media { order: -1; }
}
@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute; top: 100%; right: 0; width: min(78vw, 320px);
    background: rgba(13,13,13,.98); flex-direction: column; align-items: flex-start;
    gap: 0; padding: 1rem 1.4rem; transform: translateX(110%); transition: transform .35s var(--ease);
    box-shadow: -10px 20px 40px rgba(0,0,0,.4); border-radius: 0 0 0 14px;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav a { width: 100%; padding: .85rem 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .section { padding: 4rem 0; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 1.5rem 1rem; }
  .stat:nth-child(odd) { border-left: none; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 2px solid rgba(0,0,0,.15); padding-top: 1.2rem; }
  .why-grid, .serv-grid, .proj-grid { grid-template-columns: 1fr; }
  .clients-logos { grid-template-columns: repeat(3,1fr); }
  .clients-list { columns: 1; }
  .footer-inner { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .why { background-attachment: scroll; }
  .slider-btn { display: none; }
  .about-media .badge { left: 50%; transform: translateX(-50%); bottom: -26px; }
  .wa-widget { right: 16px; bottom: 16px; }
  .wa-float-static { right: 16px; bottom: 16px; }
  .back-to-top { right: 21px; bottom: 84px; }
  .wa-cta { max-width: 215px; font-size: .82rem; }
}