/* ============================================================
   SERVIELEC INDUSTRIAL — Premium Redesign
   Diseñador: Senior Frontend Developer
   Tema: Industrial / Electromecánico Premium Dark-Neon
   ============================================================ */

/* ─── 1. VARIABLES Y TOKENS ─────────────────────────────── */
:root {
  /* Paleta oscura industrial + eléctrico */
  --color-bg:           #0B0E14;
  --color-surface:      #111620;
  --color-surface-2:    #161C2B;
  --color-border:       rgba(0, 195, 255, 0.12);

  /* Azul eléctrico – color firma */
  --color-primary:      #00C3FF;
  --color-primary-dim:  rgba(0, 195, 255, 0.15);
  --color-primary-glow: 0 0 24px rgba(0, 195, 255, 0.5);

  /* Cobre industrial – acento cálido */
  --color-copper:       #E8872A;
  --color-copper-dim:   rgba(232, 135, 42, 0.15);
  --color-copper-glow:  0 0 24px rgba(232, 135, 42, 0.45);

  /* Texto */
  --color-text:         #E8EDF5;
  --color-text-muted:   #6B7A99;
  --color-text-faint:   #3A4460;

  /* Extras */
  --color-success:      #1FDD8E;
  --color-danger:       #FF4D6A;
  --color-whatsapp:     #25D366;

  /* Tipografía */
  --font-display:       'Barlow Condensed', 'Montserrat', sans-serif;
  --font-body:          'Inter', 'Roboto', sans-serif;

  /* Espaciado */
  --section-py:         120px;
  --header-h:           72px;
  --radius:             10px;
  --radius-lg:          18px;
  --radius-pill:        999px;

  /* Sombras */
  --shadow-card:        0 4px 32px rgba(0,0,0,0.45);
  --shadow-hover:       0 16px 48px rgba(0,0,0,0.55);
  --shadow-glow-sm:     0 0 12px rgba(0, 195, 255, 0.3);

  /* Transiciones */
  --ease:               cubic-bezier(0.25, 0.8, 0.25, 1);
  --ease-spring:        cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur:                0.3s;
  --dur-slow:           0.55s;
}

/* ─── 2. RESET Y BASE ───────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar personalizada */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: var(--radius-pill); }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a { text-decoration: none; color: inherit; }
img { max-width:100%; display:block; }
ul { list-style:none; }
button, input, select, textarea { font-family: inherit; }

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── 3. PRELOADER ──────────────────────────────────────── */
#preloader {
  position: fixed; inset: 0;
  background: var(--color-bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 10000;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#preloader.hidden { opacity:0; visibility:hidden; pointer-events:none; }

.preloader-logo {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 6px;
  color: var(--color-primary);
  text-shadow: var(--color-primary-glow);
  animation: pulse-glow 1.5s ease-in-out infinite;
}
.preloader-bar-wrap {
  width: 220px; height: 2px;
  background: var(--color-surface-2);
  border-radius: var(--radius-pill);
  margin-top: 24px; overflow: hidden;
}
.preloader-bar {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-copper));
  border-radius: var(--radius-pill);
  animation: load-bar 1.8s ease forwards;
}
@keyframes load-bar { to { width:100%; } }
@keyframes pulse-glow {
  0%,100% { text-shadow: 0 0 16px rgba(0,195,255,.4); }
  50%      { text-shadow: 0 0 36px rgba(0,195,255,.9); }
}

/* ─── 4. HEADER ─────────────────────────────────────────── */
header {
  position: fixed; top:0; left:0; width:100%;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(11, 14, 20, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
header.scrolled {
  background: rgba(11,14,20,0.92);
  box-shadow: 0 4px 24px rgba(0,0,0,0.4);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
}

/* Logo */
.logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none;
}
.logo img {
  height: 42px;
  filter: brightness(1.1);
}
.logo-wordmark {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--color-primary);
}
.logo-sub {
  font-size: 0.6rem;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  display: block;
  margin-top: -2px;
}

/* Nav */
.nav-menu {
  display: flex; gap: 36px; align-items: center;
}
.nav-menu a {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--dur) var(--ease);
}
.nav-menu a::after {
  content: '';
  position: absolute; bottom:0; left:0;
  width: 0; height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transition: width var(--dur) var(--ease);
  box-shadow: var(--shadow-glow-sm);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-primary); }
.nav-menu a:hover::after, .nav-menu a.active::after { width:100%; }

/* Header Actions */
.header-actions { display: flex; align-items: center; gap:16px; }

.btn-nav-cta {
  padding: 9px 22px;
  background: var(--color-primary);
  color: var(--color-bg) !important;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  border-radius: var(--radius-pill);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease-spring);
  white-space: nowrap;
}
.btn-nav-cta:hover {
  box-shadow: var(--color-primary-glow);
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 40px; height: 40px;
  border-radius: var(--radius);
  cursor: pointer;
  align-items: center; justify-content: center;
  font-size: 1.1rem;
  transition: border-color var(--dur);
}
.menu-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ─── 5. HERO ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: var(--header-h);
}

/* Canvas partículas */
#hero-canvas {
  position: absolute; inset:0;
  width:100%; height:100%;
  pointer-events: none;
}

/* Imagen de fondo con overlay */
.hero-bg {
  position: absolute; inset:0;
  background: url('imagen/Mot_serv.png') center/cover no-repeat;
}
.hero-bg::after {
  content:'';
  position: absolute; inset:0;
  background: linear-gradient(
    135deg,
    rgba(11,14,20,0.92) 0%,
    rgba(11,14,20,0.75) 50%,
    rgba(0,195,255,0.06) 100%
  );
}

/* Grid de líneas circuito */
.hero-grid {
  position: absolute; inset:0;
  background-image:
    linear-gradient(rgba(0,195,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,195,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-shift 20s linear infinite;
}
@keyframes grid-shift { to { background-position: 60px 60px; } }

.hero-content {
  position: relative; z-index: 2;
  max-width: 760px;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0,195,255,0.3);
  border-radius: var(--radius-pill);
  padding: 6px 18px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 28px;
  animation: fadeInUp 0.8s var(--ease) both;
}
.hero-eyebrow span.dot {
  width: 6px; height:6px;
  background: var(--color-primary);
  border-radius:50%;
  animation: pulse-glow 1.5s infinite;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s 0.15s var(--ease) both;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
  text-shadow: var(--color-primary-glow);
}

.hero-lead {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(232,237,245,0.75);
  max-width: 560px;
  margin-bottom: 44px;
  animation: fadeInUp 0.8s 0.3s var(--ease) both;
}

.hero-buttons {
  display: flex; gap: 16px; flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.45s var(--ease) both;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute; bottom: 36px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  gap: 8px; cursor: pointer; opacity: 0.5;
  transition: opacity var(--dur);
  animation: fadeIn 1s 1.2s both;
}
.hero-scroll:hover { opacity: 1; }
.hero-scroll span {
  font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--color-text-muted);
}
.scroll-line {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scroll-pulse 2s ease infinite;
}
@keyframes scroll-pulse {
  0%,100% { opacity:0.3; transform: scaleY(1); }
  50%      { opacity:1; transform: scaleY(1.3); }
}

/* Stats flotantes en hero */
.hero-stats {
  display: flex; gap: 32px; flex-wrap: wrap;
  margin-top: 60px;
  animation: fadeInUp 0.8s 0.6s var(--ease) both;
}
.hero-stat {
  display: flex; flex-direction: column;
}
.hero-stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: var(--shadow-glow-sm);
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 4px;
}
.hero-stat-divider {
  width: 1px;
  background: var(--color-border);
  align-self: stretch;
}

/* ─── 6. BOTONES ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700; font-size: 0.95rem;
  border: none; cursor: pointer;
  position: relative; overflow: hidden;
  transition: transform var(--dur) var(--ease-spring), box-shadow var(--dur) var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.btn::after {
  content:'';
  position: absolute; inset:0;
  background: rgba(255,255,255,0.12);
  opacity: 0;
  transition: opacity var(--dur);
}
.btn:hover::after { opacity:1; }
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(-1px); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  box-shadow: 0 4px 18px rgba(0,195,255,0.35);
}
.btn-primary:hover { box-shadow: 0 8px 30px rgba(0,195,255,0.55); }

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(232,237,245,0.25);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 18px rgba(0,195,255,0.2);
}

.btn-copper {
  background: var(--color-copper);
  color: #fff;
  box-shadow: 0 4px 18px rgba(232,135,42,0.35);
}
.btn-copper:hover { box-shadow: var(--color-copper-glow); }

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: #fff;
  box-shadow: 0 4px 18px rgba(37,211,102,0.3);
}
.btn-whatsapp:hover { box-shadow: 0 8px 28px rgba(37,211,102,0.5); }

.btn-sm { padding: 10px 22px; font-size: 0.85rem; }
.btn-lg { padding: 18px 42px; font-size: 1.05rem; }

/* ─── 7. SECCIÓN UTIL ───────────────────────────────────── */
.section { padding: var(--section-py) 0; }
.section-sm { padding: 72px 0; }

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.section-title {
  text-align: center;
  margin-bottom: 72px;
}
.section-title h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: #fff;
  margin-bottom: 16px;
}
.section-title h2 .accent { color: var(--color-primary); }
.section-title .divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-copper));
  margin: 0 auto 20px;
  border-radius: var(--radius-pill);
}
.section-title p {
  color: var(--color-text-muted);
  max-width: 580px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Animación reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal.visible { opacity:1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── 8. ABOUT ──────────────────────────────────────────── */
.about { background: var(--color-surface); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-image-wrap {
  position: relative;
}
.about-image-wrap img {
  width:100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  height: 500px;
  filter: brightness(0.85) saturate(0.9);
}
.about-image-badge {
  position: absolute;
  bottom: -24px; right: -24px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  text-align: center;
}
.about-image-badge .num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  text-shadow: var(--shadow-glow-sm);
}
.about-image-badge .label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Línea de circuito decorativa */
.about-image-wrap::before {
  content:'';
  position: absolute;
  top: -20px; left: -20px;
  width: 80px; height: 80px;
  border-top: 2px solid var(--color-primary);
  border-left: 2px solid var(--color-primary);
  border-radius: 4px 0 0 0;
  opacity: 0.5;
}
.about-image-wrap::after {
  content:'';
  position: absolute;
  bottom: 20px; right: 20px;
  width: 60px; height: 60px;
  border-bottom: 2px solid var(--color-copper);
  border-right: 2px solid var(--color-copper);
  border-radius: 0 0 4px 0;
  opacity: 0.5;
}

.about-text h3 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: #fff;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.about-features {
  display: flex; flex-direction: column; gap: 16px;
  margin-top: 32px;
}
.feature-item {
  display: flex; align-items: flex-start; gap: 18px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  transition: border-color var(--dur), box-shadow var(--dur);
}
.feature-item:hover {
  border-color: rgba(0,195,255,0.4);
  box-shadow: 0 0 20px rgba(0,195,255,0.1);
}
.feature-icon-box {
  width: 46px; height: 46px; flex-shrink: 0;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0,195,255,0.3);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
  font-size: 1.15rem;
}
.feature-item h4 {
  font-size: 1rem; color: #fff; margin-bottom: 4px;
}
.feature-item p {
  font-size: 0.88rem; color: var(--color-text-muted); margin:0;
}

/* ─── 9. MISIÓN / VISIÓN ────────────────────────────────── */
.mission-vision {
  background: var(--color-bg);
  position: relative; overflow: hidden;
}
.mission-vision::before {
  content:'';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(0,195,255,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.mv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative; z-index: 1;
}

.mv-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  text-align: center;
  transition: transform var(--dur) var(--ease-spring), border-color var(--dur), box-shadow var(--dur);
  position: relative; overflow: hidden;
}
.mv-card::before {
  content:'';
  position: absolute; top:0; left:0; right:0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-copper));
  opacity: 0;
  transition: opacity var(--dur);
}
.mv-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0,195,255,0.35);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4), 0 0 30px rgba(0,195,255,0.08);
}
.mv-card:hover::before { opacity:1; }

.mv-icon-ring {
  width: 72px; height: 72px;
  margin: 0 auto 28px;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0,195,255,0.3);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; color: var(--color-primary);
  transition: box-shadow var(--dur);
}
.mv-card:hover .mv-icon-ring { box-shadow: var(--color-primary-glow); }
.mv-card h3 { font-size: 1.6rem; color: #fff; margin-bottom: 16px; }
.mv-card p { color: var(--color-text-muted); font-size: 0.97rem; }

/* ─── 10. SERVICIOS ─────────────────────────────────────── */
.services { background: var(--color-surface); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-spring), border-color var(--dur), box-shadow var(--dur);
  display: flex; flex-direction: column;
  position: relative;
}
.service-card:hover {
  transform: translateY(-12px);
  border-color: rgba(0,195,255,0.4);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 40px rgba(0,195,255,0.1);
}

/* Borde superior animado en hover */
.service-card::before {
  content:'';
  position: absolute; top:0; left:0; right:0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-copper), var(--color-primary));
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity 0.3s;
  animation: shimmer 2.5s linear infinite;
}
.service-card:hover::before { opacity:1; }
@keyframes shimmer { to { background-position: -200% 0; } }

.service-img-wrap {
  height: 210px; overflow: hidden; position: relative;
}
.service-img-wrap img {
  width:100%; height:100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), filter 0.4s;
  filter: brightness(0.8) saturate(0.8);
}
.service-card:hover .service-img-wrap img {
  transform: scale(1.08);
  filter: brightness(0.9) saturate(1.1);
}
/* Overlay gradiente imagen */
.service-img-wrap::after {
  content:'';
  position: absolute; inset:0;
  background: linear-gradient(to top, var(--color-surface-2) 0%, transparent 60%);
}

/* Icono flotante */
.service-icon-badge {
  position: absolute;
  top: 180px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 52px; height: 52px;
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 20px rgba(0,195,255,0.5);
  transition: transform var(--dur) var(--ease-spring), box-shadow var(--dur);
}
.service-card:hover .service-icon-badge {
  transform: translateX(-50%) scale(1.15);
  box-shadow: 0 0 30px rgba(0,195,255,0.7);
}

.service-body {
  padding: 42px 28px 28px;
  flex-grow: 1; display: flex; flex-direction: column;
}
.service-body h3 {
  font-size: 1.4rem; color: #fff; margin-bottom: 12px;
}
.service-body > p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  margin-bottom: 20px;
}

.service-list { margin-bottom: 28px; }
.service-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.service-list li:last-child { border-bottom: none; }
.service-list li::before {
  content:'';
  width: 6px; height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
  box-shadow: 0 0 6px rgba(0,195,255,0.7);
}

.service-footer {
  padding: 0 28px 28px;
  margin-top: auto;
}

/* ─── 11. STATS (CIFRAS) ────────────────────────────────── */
.stats-band {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-surface) 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  position: relative; overflow: hidden;
}
.stats-band::after {
  content:'';
  position: absolute; inset:0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,195,255,0.06) 0%, transparent 70%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative; z-index:1;
}
.stat-item {
  background: var(--color-surface);
  padding: 52px 36px;
  text-align: center;
  transition: background var(--dur);
}
.stat-item:hover { background: var(--color-surface-2); }

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 4.5vw, 4rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  text-shadow: var(--shadow-glow-sm);
  margin-bottom: 8px;
}
.stat-suffix {
  color: var(--color-copper);
  text-shadow: var(--color-copper-glow);
}
.stat-label {
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ─── 12. DESPIECE INTERACTIVO ──────────────────────────── */
.motor-section { background: var(--color-bg); }

.motor-diagram-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}

.motor-svg-container {
  position: relative;
}
.motor-svg-container svg {
  width:100%; max-width: 520px;
  filter: drop-shadow(0 0 30px rgba(0,195,255,0.15));
}

/* partes del motor – colores por defecto y hover */
.motor-part {
  cursor: pointer;
  transition: filter 0.25s, opacity 0.25s;
  opacity: 0.8;
}
.motor-part:hover, .motor-part.active {
  opacity: 1;
  filter: brightness(1.4) drop-shadow(0 0 8px var(--color-primary));
}
.motor-part.active { filter: brightness(1.6) drop-shadow(0 0 14px var(--color-primary)); }

/* Panel de info del motor */
.motor-info-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  min-height: 320px;
}
.motor-info-panel h3 {
  font-size: 1.7rem;
  color: var(--color-primary);
  margin-bottom: 14px;
  text-shadow: var(--shadow-glow-sm);
  min-height: 2.2em;
  transition: all 0.3s;
}
.motor-info-panel p {
  color: var(--color-text-muted);
  font-size: 0.97rem;
  line-height: 1.7;
  min-height: 5em;
  transition: all 0.3s;
}
.motor-parts-list {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 28px;
}
.motor-part-btn {
  padding: 8px 18px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--dur);
  font-family: var(--font-body);
}
.motor-part-btn:hover, .motor-part-btn.active {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Falla tooltip */
.motor-tooltip {
  position: absolute;
  background: var(--color-surface-2);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--color-primary);
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 10;
  box-shadow: 0 0 20px rgba(0,195,255,0.3);
}
.motor-tooltip.show { opacity:1; transform: translateY(0); }

/* ─── 13. DIAGNÓSTICO INTERACTIVO ───────────────────────── */
.diagnostic-section { background: var(--color-surface); }

.diagnostic-widget {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.diag-header {
  background: linear-gradient(135deg, var(--color-primary-dim), transparent);
  border-bottom: 1px solid var(--color-border);
  padding: 28px 36px;
  display: flex; align-items: center; gap: 16px;
}
.diag-header i { font-size: 1.6rem; color: var(--color-primary); }
.diag-header h3 { font-size: 1.4rem; color: #fff; margin:0; }
.diag-header p { font-size: 0.88rem; color: var(--color-text-muted); margin:0; }

.diag-body { padding: 36px; }

.diag-step { display: none; }
.diag-step.active { display: block; animation: fadeInUp 0.4s var(--ease); }

.diag-question {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 24px;
  font-weight: 600;
}
.diag-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.diag-option {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  cursor: pointer;
  transition: all var(--dur);
  display: flex; align-items: center; gap: 14px;
  font-size: 0.93rem;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}
.diag-option:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-dim);
}
.diag-option i { font-size: 1.3rem; color: var(--color-primary); }

/* Resultado diagnóstico */
.diag-result {
  background: var(--color-surface);
  border: 1px solid rgba(0,195,255,0.3);
  border-radius: var(--radius);
  padding: 28px;
  display: none;
}
.diag-result.show { display: block; animation: fadeInUp 0.4s var(--ease); }
.diag-result h4 { color: var(--color-primary); font-size: 1.2rem; margin-bottom: 12px; }
.diag-result p { color: var(--color-text-muted); font-size: 0.93rem; margin-bottom: 20px; }

.diag-progress {
  display: flex; gap: 6px; margin-bottom: 32px;
}
.diag-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-text-faint);
  transition: background var(--dur), box-shadow var(--dur);
}
.diag-dot.active {
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(0,195,255,0.6);
}
.diag-dot.done { background: var(--color-success); }

/* ─── 14. ANTES / DESPUÉS ───────────────────────────────── */
.before-after-section { background: var(--color-bg); }

.ba-cases {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 860px;
  margin: 0 auto 32px;
}
.ba-case-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
  font-family: var(--font-body);
  text-align: left;
}
.ba-case-btn:hover {
  border-color: rgba(0,195,255,0.35);
  transform: translateY(-2px);
}
.ba-case-btn.active {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-sm);
}
.ba-case-num {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-faint);
  line-height: 1;
  transition: color var(--dur) var(--ease);
}
.ba-case-btn.active .ba-case-num { color: var(--color-primary); }
.ba-case-info { display: flex; flex-direction: column; gap: 2px; }
.ba-case-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.2px;
}
.ba-case-meta {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.ba-caption {
  max-width: 860px;
  margin: 18px auto 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.ba-container {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  cursor: col-resize;
  user-select: none;
  border: 1px solid var(--color-border);
  transition: opacity var(--dur) var(--ease);
}
.ba-container.switching { opacity: 0.3; }
.ba-after, .ba-before {
  width: 100%;
  display: block;
  pointer-events: none;
  object-fit: cover;
  height: 480px;
}
.ba-before-wrap {
  position: absolute; inset:0;
  overflow: hidden;
}
.ba-before-wrap img {
  width:100%; height:100%; object-fit: cover;
  filter: sepia(0.4) saturate(0.7);
}
.ba-handle {
  position: absolute; top:0; width: 3px; height:100%;
  background: var(--color-primary);
  box-shadow: var(--color-primary-glow);
  cursor: col-resize; z-index: 3;
}
.ba-handle-knob {
  position: absolute; top:50%;
  transform: translate(-50%,-50%);
  width: 44px; height: 44px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex; align-items:center; justify-content:center;
  color: var(--color-bg);
  font-size: 1rem;
  box-shadow: 0 0 20px rgba(0,195,255,0.6);
  font-weight: 700;
}
.ba-label {
  position: absolute; top: 20px;
  background: rgba(11,14,20,0.8);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  z-index: 2;
}
.ba-label-before { left:20px; color: var(--color-text-muted); border: 1px solid rgba(255,255,255,0.1); }
.ba-label-after  { right:20px; color: var(--color-primary); border: 1px solid rgba(0,195,255,0.3); }

.ba-after { filter: brightness(1.05) saturate(1.1); }

/* ─── 15. CLIENTES ──────────────────────────────────────── */
.clients-section { background: var(--color-surface); }

.clients-track-wrap {
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.clients-track {
  display: flex; gap: 48px;
  animation: clients-scroll 30s linear infinite;
  width: max-content;
}
.clients-track:hover { animation-play-state: paused; }
.client-item {
  flex-shrink: 0;
  display: flex; align-items: center;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 32px;
  transition: border-color var(--dur), box-shadow var(--dur);
}
.client-item:hover {
  border-color: rgba(0,195,255,0.4);
  box-shadow: 0 0 20px rgba(0,195,255,0.1);
}
.client-logo {
  height: 40px;
  object-fit: contain;
  filter: grayscale(1) brightness(1.5);
  opacity: 0.7;
  transition: filter var(--dur), opacity var(--dur);
  max-width: 140px;
}
.client-item:hover .client-logo {
  filter: grayscale(0) brightness(1);
  opacity: 1;
}
@keyframes clients-scroll { to { transform: translateX(-50%); } }

/* ─── 16. TESTIMONIOS ───────────────────────────────────── */
.testimonials-section { background: var(--color-bg); }

.testimonials-slider-wrap { position: relative; }

.testimonials-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  transition: transform var(--dur) var(--ease-spring), border-color var(--dur), box-shadow var(--dur);
}
.testimonial-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0,195,255,0.3);
  box-shadow: var(--shadow-hover);
}
.testimonial-card::before {
  content:'\201C';
  position: absolute; top: 20px; right: 28px;
  font-size: 5rem; line-height:1;
  color: var(--color-primary);
  opacity: 0.15;
  font-family: Georgia, serif;
}

.test-stars {
  display: flex; gap: 4px; margin-bottom: 18px;
  color: var(--color-copper);
  font-size: 0.85rem;
}
.test-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 28px;
  font-style: italic;
}
.test-author {
  display: flex; align-items: center; gap: 14px;
}
.test-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 12px rgba(0,195,255,0.3);
}
.test-name { font-size: 0.97rem; color:#fff; font-weight: 700; }
.test-role { font-size: 0.78rem; color: var(--color-text-muted); }

/* ─── 17. CONTACTO ──────────────────────────────────────── */
.contact-section { background: var(--color-surface); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}

.contact-info h3 {
  font-size: 2rem; color: #fff; margin-bottom: 16px;
}
.contact-info > p {
  color: var(--color-text-muted);
  margin-bottom: 36px;
}
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px;
}
.contact-icon {
  width: 46px; height: 46px; flex-shrink:0;
  background: var(--color-primary-dim);
  border: 1px solid rgba(0,195,255,0.25);
  border-radius: var(--radius);
  display: flex; align-items:center; justify-content:center;
  color: var(--color-primary); font-size: 1.1rem;
}
.contact-item h5 { color: #fff; font-size: 0.9rem; margin-bottom:3px; }
.contact-item p  { color: var(--color-text-muted); font-size: 0.88rem; }

.contact-form-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 44px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}
.form-group label span { color: var(--color-primary); }

.form-control {
  width:100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 13px 18px;
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-body);
  transition: border-color var(--dur), box-shadow var(--dur);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,195,255,0.12);
}
.form-control::placeholder { color: var(--color-text-faint); }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control option { background: var(--color-surface-2); }

/* ─── 18. LOCALIZACIONES (TABS) ─────────────────────────── */
.locations-section { background: var(--color-bg); }

.location-tabs {
  display: flex; gap: 8px; margin-bottom: 28px;
  flex-wrap: wrap;
}
.location-tab {
  padding: 11px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-size: 0.88rem; font-weight: 600;
  cursor: pointer;
  transition: all var(--dur);
  font-family: var(--font-body);
}
.location-tab.active, .location-tab:hover {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.location-content { display: none; }
.location-content.active { display: grid; grid-template-columns: 1fr 1.5fr; gap: 36px; }
.location-detail {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.location-detail h4 { color:#fff; font-size: 1.3rem; margin-bottom: 20px; }
.location-detail p { color: var(--color-text-muted); font-size: 0.93rem; margin-bottom: 12px; display: flex; align-items: flex-start; gap: 10px; }
.location-detail p i { color: var(--color-primary); margin-top: 2px; flex-shrink:0; }
.location-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  height: 320px;
}
.location-map iframe { width:100%; height:100%; border:0; }

/* ─── 19. FOOTER ─────────────────────────────────────────── */
footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  position: relative; overflow: hidden;
}
footer::before {
  content:'';
  position: absolute; bottom:0; left:0; right:0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-copper), transparent);
  opacity: 0.4;
}

.footer-main {
  padding: 80px 0 48px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand .logo-wordmark { font-size: 1.8rem; }
.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 16px 0 28px;
  line-height: 1.65;
}
.social-links { display: flex; gap: 12px; }
.social-link {
  width: 40px; height: 40px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex; align-items:center; justify-content:center;
  color: var(--color-text-muted);
  font-size: 1rem;
  transition: all var(--dur);
}
.social-link:hover {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-family: var(--font-body);
  font-weight: 700;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  color: rgba(232,237,245,0.65);
  font-size: 0.9rem;
  transition: color var(--dur), transform var(--dur);
  display: inline-block;
}
.footer-links a:hover { color: var(--color-primary); transform: translateX(4px); }

.newsletter-form-footer {
  display: flex; flex-direction: column; gap: 12px;
}
.newsletter-input {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: border-color var(--dur);
  width: 100%;
}
.newsletter-input:focus { border-color: var(--color-primary); }
.newsletter-input::placeholder { color: var(--color-text-faint); }

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  display: flex; align-items:center; justify-content:space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { color: var(--color-text-faint); font-size: 0.83rem; }
.footer-bottom a { color: var(--color-primary); }

/* ─── 20. WHATSAPP FLOAT ────────────────────────────────── */
.whatsapp-float {
  position: fixed; bottom: 28px; right: 28px;
  width: 60px; height: 60px;
  background: var(--color-whatsapp);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items:center; justify-content:center;
  font-size: 1.6rem;
  z-index: 999;
  box-shadow: 0 4px 24px rgba(37,211,102,0.5);
  transition: transform var(--dur) var(--ease-spring), box-shadow var(--dur);
  animation: wa-pulse 2.5s ease infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 36px rgba(37,211,102,0.7);
}
@keyframes wa-pulse {
  0%,100% { box-shadow: 0 4px 24px rgba(37,211,102,0.4); }
  50%      { box-shadow: 0 4px 36px rgba(37,211,102,0.7), 0 0 0 12px rgba(37,211,102,0.0); }
}
.wa-tooltip {
  position: absolute;
  right: 72px; top:50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 7px 16px;
  font-size: 0.82rem;
  color: var(--color-text);
  white-space: nowrap;
  opacity:0; pointer-events:none;
  transition: opacity var(--dur), transform var(--dur);
}
.whatsapp-float:hover .wa-tooltip {
  opacity:1; transform: translateY(-50%) translateX(0);
}

/* ─── 21. ANIMACIONES GLOBALES ──────────────────────────── */
@keyframes fadeInUp {
  from { opacity:0; transform: translateY(24px); }
  to   { opacity:1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity:0; } to { opacity:1; }
}

/* Línea activa navbar */
nav a { scroll-margin-top: var(--header-h); }

/* ─── 22. RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 1100px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-image-wrap { display:none; }
  .mv-grid { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  :root { --section-py: 80px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .motor-diagram-wrap { grid-template-columns: 1fr; }
  .testimonials-track { grid-template-columns: 1fr; }
  .location-content.active { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: var(--header-h); left: -100%;
    width: 100%; height: calc(100vh - var(--header-h));
    background: var(--color-bg);
    flex-direction: column; gap: 0;
    padding: 32px 0;
    border-right: 1px solid var(--color-border);
    transition: left var(--dur-slow) var(--ease);
    overflow-y: auto;
  }
  .nav-menu.open { left: 0; }
  .nav-menu a {
    display: block; padding: 16px 32px;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
  .btn-nav-cta { display: none; }
  .menu-toggle { display: flex; }
  .hero h1 { font-size: 2.4rem; }
  .hero-stats { gap: 20px; }
  .hero-stat-divider { display:none; }
  .mv-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align:center; }
  .ba-container { height: 300px; }
  .ba-after, .ba-before-wrap img { height:300px; }
  .ba-cases { flex-direction: column; align-items: stretch; }
  .ba-case-btn { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; }
  .stats-grid { grid-template-columns: 1fr; }
  .contact-form-card { padding: 28px 20px; }
  .section-title h2 { font-size: 1.9rem; }
}

/* ─── 23. PREFERENCIAS DE MOVIMIENTO ──────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}