/* ================================================================
   Pro-Group Security — Estilos principales
   Archivo: css/styles.css
   ================================================================ */

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

:root {
  --primary:    #4a8db8;
  --primary-d:  #3576a0;
  --primary-xl: #6aacd4;
  --silver:     #8a9db8;
  --dark:       #080910;
  --dark2:      #0d0e1a;
  --dark3:      #131520;
  --dark4:      #1a1d2e;
  --white:      #f0f4f8;
  --white-dim:  rgba(240,244,248,0.65);
  --whatsapp:   #25D366;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background: var(--dark); color: var(--white); overflow-x: hidden;
}

/* ─── NAV ──────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 6%; height: 72px;
  background: rgba(8,9,16,0.95); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(138,157,184,0.1);
}
.logo { display: flex; align-items: center; text-decoration: none; }
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--silver); text-decoration: none; font-size: .88rem; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--white); }
.nav-cta {
  background: var(--primary); color: white; padding: 9px 22px; border-radius: 6px;
  font-weight: 700; font-size: .85rem; text-decoration: none; transition: background .2s;
}
.nav-cta:hover { background: var(--primary-d); }

/* Hamburger (mobile) */
.nav-hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--silver); border-radius: 2px; transition: all .3s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.nav-mobile {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: rgba(8,9,16,0.98); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(138,157,184,0.1);
  padding: 24px 6%; z-index: 99; flex-direction: column; gap: 16px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  color: var(--silver); text-decoration: none; font-size: 1rem;
  font-weight: 500; padding: 8px 0;
  border-bottom: 1px solid rgba(138,157,184,.06);
}
.nav-mobile a:hover { color: var(--white); }
.nav-mobile .nav-cta { border: none; width: fit-content; margin-top: 8px; }

/* ─── HERO ──────────────────────────────────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding: 120px 6% 80px;
}
.hero-bg-img {
  position: absolute; inset: 0;
  background-image: url('https://images.unsplash.com/photo-1605810230434-7631ac76ec81?auto=format&fit=crop&w=1600&q=80');
  background-size: cover; background-position: center;
  filter: brightness(.18) saturate(.8);
}
/* Fallback Unsplash si no existe imagen local */
.hero-bg-img.cdn {
  background-image: url('https://images.unsplash.com/photo-1605810230434-7631ac76ec81?auto=format&fit=crop&w=1600&q=80');
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(8,9,16,.92) 0%, rgba(13,16,26,.75) 50%, rgba(8,9,16,.85) 100%);
}
.hero-grid {
  position: absolute; inset: 0; opacity: .03;
  background-image: linear-gradient(rgba(138,157,184,.8) 1px,transparent 1px),
                    linear-gradient(90deg,rgba(138,157,184,.8) 1px,transparent 1px);
  background-size: 60px 60px;
}
.hero-glow {
  position: absolute; top: -160px; right: -80px; width: 640px; height: 640px;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle,rgba(74,141,184,.14) 0%,transparent 68%);
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(74,141,184,.12); border: 1px solid rgba(74,141,184,.3);
  color: var(--primary-xl); padding: 6px 16px; border-radius: 100px;
  font-size: .75rem; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; margin-bottom: 28px;
}
.hero-badge::before { content:''; width:6px; height:6px; background:var(--primary); border-radius:50%; }
.hero h1 {
  font-size: clamp(2.6rem,5vw,4rem); font-weight: 900; line-height: 1.08;
  letter-spacing: -1.5px; margin-bottom: 22px; color: var(--white);
}
.hero h1 span {
  background: linear-gradient(90deg,var(--primary-xl),var(--silver));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p { font-size: 1.1rem; color: var(--white-dim); line-height: 1.75; max-width: 520px; margin-bottom: 40px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--primary); color: white; padding: 14px 32px; border-radius: 8px;
  font-weight: 700; font-size: .97rem; text-decoration: none; transition: all .25s;
  border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  box-shadow: 0 8px 28px rgba(74,141,184,.3);
}
.btn-primary:hover { background: var(--primary-d); transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--white); padding: 14px 32px; border-radius: 8px;
  font-weight: 600; font-size: .97rem; text-decoration: none;
  border: 1.5px solid rgba(138,157,184,.3); transition: all .25s;
  display: inline-flex; align-items: center; gap: 8px;
}
.btn-outline:hover { border-color: var(--silver); }
.hero-stats {
  display: flex; gap: 48px; margin-top: 60px; padding-top: 40px;
  border-top: 1px solid rgba(138,157,184,.12);
}
.stat-num { font-size: 2.2rem; font-weight: 900; color: var(--white); }
.stat-num span { color: var(--primary); }
.stat-label { font-size: .75rem; color: var(--silver); text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }

/* ─── SECTION BASE ──────────────────────────────────────────── */
section { padding: 96px 6%; }
.section-label {
  display: inline-block; color: var(--primary); font-size: .72rem;
  font-weight: 700; letter-spacing: 2.5px; text-transform: uppercase; margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.9rem,3.5vw,2.8rem); font-weight: 800; letter-spacing: -1px;
  line-height: 1.15; margin-bottom: 16px; color: var(--white);
}
.section-sub { font-size: 1rem; color: var(--white-dim); max-width: 560px; line-height: 1.75; }

/* ─── SERVICES ──────────────────────────────────────────────── */
#servicios { background: var(--dark2); }
.services-header { text-align: center; margin-bottom: 64px; }
.services-header .section-sub { margin: 0 auto; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(300px,1fr)); gap: 20px; }

.service-card {
  background: var(--dark3); border: 1px solid rgba(138,157,184,.09);
  border-radius: 16px; overflow: hidden; transition: all .3s; cursor: default; position: relative;
}
.service-card::after {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  background: linear-gradient(90deg,var(--primary),var(--primary-xl));
  transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.service-card:hover { border-color: rgba(74,141,184,.3); transform: translateY(-4px); background: var(--dark4); }
.service-card:hover::after { transform: scaleX(1); }
.service-card.featured {
  border-color: rgba(74,141,184,.2);
  background: linear-gradient(145deg,#111830 0%,#131520 100%);
}

.card-img {
  width: 100%; height: 180px; object-fit: cover;
  display: block; transition: transform .4s;
  filter: brightness(.75) saturate(.7);
}
.service-card:hover .card-img { transform: scale(1.04); filter: brightness(.85) saturate(.9); }
.card-img-wrap { overflow: hidden; position: relative; height: 180px; }
.card-img-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 40%, var(--dark3) 100%);
}
.service-card.featured .card-img-overlay {
  background: linear-gradient(to bottom, transparent 40%, #111830 100%);
}

.card-body { padding: 24px 28px 28px; }
.service-icon {
  width: 48px; height: 48px; border-radius: 10px; background: rgba(74,141,184,.12);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
  transition: background .3s;
}
.service-icon svg { width: 24px; height: 24px; }
.service-card:hover .service-icon { background: var(--primary); }
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; color: var(--white); }
.service-card p { font-size: .88rem; color: var(--white-dim); line-height: 1.7; }
.service-tag {
  display: inline-block; margin-top: 14px; font-size: .68rem; font-weight: 700;
  letter-spacing: 1px; text-transform: uppercase; color: var(--primary-xl);
  padding: 4px 10px; border-radius: 100px;
  background: rgba(74,141,184,.1); border: 1px solid rgba(74,141,184,.2);
}

/* ─── GALLERY ───────────────────────────────────────────────── */
#galeria { background: var(--dark); }
.gallery-header { text-align: center; margin-bottom: 48px; }
.gallery-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 240px 240px;
  gap: 12px;
}
.gallery-item { border-radius: 12px; overflow: hidden; position: relative; cursor: pointer; }
.gallery-item img {
  width:100%; height:100%; object-fit:cover; transition: transform .5s, filter .5s;
  filter: brightness(.7) saturate(.7);
}
.gallery-item:hover img { transform: scale(1.06); filter: brightness(.9) saturate(1); }
.gallery-item:first-child { grid-row: 1 / 3; }
.gallery-item-label {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 16px;
  background: linear-gradient(transparent, rgba(8,9,16,.85));
  font-size: .78rem; font-weight: 600; color: var(--white); letter-spacing: .5px;
  opacity: 0; transition: opacity .3s;
}
.gallery-item:hover .gallery-item-label { opacity: 1; }

/* ─── WHY US ────────────────────────────────────────────────── */
#nosotros { background: var(--dark2); }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.why-visual {
  position: relative; border-radius: 20px; overflow: hidden;
  min-height: 480px; border: 1px solid rgba(74,141,184,.18);
}
.why-visual-img {
  position: absolute; inset: 0; width:100%; height:100%; object-fit:cover;
  filter: brightness(.3) saturate(.5);
}
.why-visual-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,rgba(13,14,26,.4) 0%,rgba(13,14,26,.9) 100%);
}
.why-visual-inner { position: absolute; bottom: 0; left: 0; right: 0; padding: 36px; }
.why-badge-grid { display: grid; grid-template-columns:1fr 1fr 1fr; gap: 12px; }
.why-badge {
  background: rgba(240,244,248,.06); border: 1px solid rgba(138,157,184,.15);
  border-radius: 12px; padding: 18px; backdrop-filter: blur(8px);
}
.why-badge-num { font-size: 1.8rem; font-weight: 900; color: var(--primary-xl); }
.why-badge-label { font-size: .75rem; color: var(--silver); margin-top: 4px; }
.why-list { margin-top: 40px; display: flex; flex-direction: column; gap: 20px; }
.why-item { display: flex; gap: 16px; align-items: flex-start; }
.why-check {
  width:36px; height:36px; border-radius:8px; flex-shrink:0;
  background: rgba(74,141,184,.12); display:flex; align-items:center; justify-content:center;
}
.why-check svg { width:18px; height:18px; fill:var(--primary); }
.why-item h4 { font-size: .93rem; font-weight: 600; margin-bottom: 4px; color: var(--white); }
.why-item p { font-size: .87rem; color: var(--white-dim); line-height: 1.65; }

/* ─── PROCESS ───────────────────────────────────────────────── */
#proceso { background: var(--dark); }
.process-header { text-align: center; margin-bottom: 64px; }
.process-steps { display:grid; grid-template-columns:repeat(4,1fr); gap:0; position:relative; }
.process-steps::before {
  content:''; position:absolute; top:39px; left:12.5%; right:12.5%; height:1px;
  background: linear-gradient(90deg,var(--primary),rgba(74,141,184,.15));
}
.step { text-align: center; padding: 0 20px; }
.step-num {
  width:78px; height:78px; border-radius:50%; border:1.5px solid var(--primary);
  margin:0 auto 24px; display:flex; align-items:center; justify-content:center;
  font-size:1.4rem; font-weight:900; color:var(--primary-xl);
  background:var(--dark); position:relative; z-index:1;
}
.step h4 { font-size:.97rem; font-weight:700; margin-bottom:10px; color:var(--white); }
.step p { font-size:.87rem; color:var(--white-dim); line-height:1.65; }

/* ─── CTA BAND ──────────────────────────────────────────────── */
.cta-band {
  position: relative; overflow: hidden; padding: 80px 6%; text-align: center;
  background: linear-gradient(135deg,#0d1525 0%,#0f1a2e 50%,#0d1020 100%);
  border-top: 1px solid rgba(74,141,184,.2); border-bottom: 1px solid rgba(74,141,184,.2);
}
.cta-band::before {
  content:''; position:absolute; top:-200px; left:50%; transform:translateX(-50%);
  width:600px; height:400px; border-radius:50%;
  background:radial-gradient(circle,rgba(74,141,184,.1) 0%,transparent 70%);
}
.cta-band h2 {
  font-size:clamp(1.8rem,3vw,2.5rem); font-weight:800; margin-bottom:16px;
  letter-spacing:-.5px; background:linear-gradient(90deg,var(--white),var(--silver));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; position:relative;
}
.cta-band p { font-size:1rem; color:var(--white-dim); margin-bottom:36px; position:relative; }
.btn-steel {
  background:var(--primary); color:white; padding:14px 36px; border-radius:8px;
  font-weight:700; font-size:.97rem; text-decoration:none; transition:all .25s;
  display:inline-flex; align-items:center; gap:8px;
  box-shadow:0 8px 28px rgba(74,141,184,.35); position:relative;
}
.btn-steel:hover { background:var(--primary-d); transform:translateY(-2px); }

/* ─── CONTACT ───────────────────────────────────────────────── */
#contacto { background: var(--dark); }
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:start; }
.contact-info h2 { font-size:2rem; font-weight:800; margin-bottom:16px; color:var(--white); }
.contact-info p { color:var(--white-dim); line-height:1.7; margin-bottom:36px; }
.contact-item { display:flex; gap:16px; align-items:center; margin-bottom:20px; }
.contact-item-icon {
  width:48px; height:48px; border-radius:10px; flex-shrink:0;
  background:rgba(74,141,184,.1); border:1px solid rgba(74,141,184,.2);
  display:flex; align-items:center; justify-content:center;
}
.contact-item-icon svg { width:20px; height:20px; fill:var(--primary); }
.contact-item-label { font-size:.7rem; color:var(--silver); text-transform:uppercase; letter-spacing:1px; }
.contact-item-value { font-size:.93rem; font-weight:500; color:var(--white); }
.contact-whatsapp-box {
  background:linear-gradient(160deg, var(--dark3), rgba(37,211,102,.06));
  border:1px solid rgba(37,211,102,.18); border-radius:20px; padding:48px 40px;
  display:flex; flex-direction:column; align-items:flex-start;
}
.contact-whatsapp-icon {
  width:64px; height:64px; border-radius:16px; background:#25D366;
  display:flex; align-items:center; justify-content:center; margin-bottom:24px;
  box-shadow:0 8px 24px rgba(37,211,102,.3);
}
.contact-whatsapp-box h3 { font-size:1.4rem; font-weight:800; margin-bottom:12px; color:var(--white); }
.contact-whatsapp-box p { color:var(--white-dim); line-height:1.7; margin-bottom:8px; }
.contact-whatsapp-status {
  display:flex; align-items:center; gap:8px; margin-top:24px;
  font-size:.85rem; color:var(--silver);
}
.status-dot {
  width:9px; height:9px; border-radius:50%; background:#25D366; flex-shrink:0;
  box-shadow:0 0 0 0 rgba(37,211,102,.6); animation:statusPulse 2s infinite;
}
@keyframes statusPulse {
  0% { box-shadow:0 0 0 0 rgba(37,211,102,.5); }
  70% { box-shadow:0 0 0 6px rgba(37,211,102,0); }
  100% { box-shadow:0 0 0 0 rgba(37,211,102,0); }
}

.btn-whatsapp {
  display:inline-flex; align-items:center; gap:12px; margin-top:24px;
  background:#25D366; color:white; padding:14px 28px; border-radius:10px;
  text-decoration:none; font-weight:700; font-size:.93rem;
  box-shadow:0 6px 20px rgba(37,211,102,.3); transition:all .2s;
}
.btn-whatsapp:hover { background:#1dbe59; transform:translateY(-1px); }
.btn-whatsapp-lg { width:100%; justify-content:center; padding:18px 28px; font-size:1rem; margin-top:28px; }

/* ─── WHATSAPP FLOTANTE ─────────────────────────────────────── */
.wa-float {
  position:fixed; bottom:32px; right:32px; z-index:999;
  display:flex; align-items:center; gap:12px; text-decoration:none;
  animation:waFloat 3.5s ease-in-out infinite;
}
@keyframes waFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
.wa-label {
  background:var(--dark3); color:var(--white); border:1px solid rgba(138,157,184,.15);
  padding:8px 16px; border-radius:8px; font-size:.82rem; font-weight:600;
  box-shadow:0 4px 20px rgba(0,0,0,.5); opacity:0; transition:opacity .25s; pointer-events:none;
}
.wa-float:hover .wa-label { opacity:1; }
.wa-btn {
  width:60px; height:60px; border-radius:50%; background:var(--whatsapp);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 24px rgba(37,211,102,.4);
}
.wa-btn svg { width:30px; height:30px; fill:white; }
.wa-pulse {
  position:absolute; top:0; right:0; width:60px; height:60px; border-radius:50%;
  background:rgba(37,211,102,.35); animation:pulse 2.2s ease-out infinite;
}
@keyframes pulse { 0%{transform:scale(1);opacity:.6} 100%{transform:scale(1.85);opacity:0} }

/* ─── FOOTER ────────────────────────────────────────────────── */
footer { background:#050609; padding:60px 6% 32px; border-top:1px solid rgba(138,157,184,.08); }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr; gap:60px; margin-bottom:48px; }
.footer-brand p { color:rgba(138,157,184,.5); font-size:.87rem; line-height:1.72; margin-top:16px; max-width:320px; }
.footer-col h4 {
  font-size:.75rem; font-weight:700; letter-spacing:1.5px; text-transform:uppercase;
  color:var(--silver); margin-bottom:20px;
}
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:10px; }
.footer-col ul li a { color:rgba(138,157,184,.45); text-decoration:none; font-size:.87rem; transition:color .2s; }
.footer-col ul li a:hover { color:var(--white); }
.footer-bottom {
  border-top:1px solid rgba(138,157,184,.08); padding-top:24px;
  display:flex; justify-content:space-between; align-items:center;
  font-size:.78rem; color:rgba(138,157,184,.3);
}

/* ─── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width:900px) {
  .why-grid, .contact-grid { grid-template-columns:1fr; gap:48px; }
  .process-steps { grid-template-columns:1fr 1fr; gap:32px; }
  .process-steps::before { display:none; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .nav-links, .nav-cta { display:none; }
  .nav-hamburger { display:flex; }
  .gallery-grid { grid-template-columns:1fr 1fr; grid-template-rows:auto; }
  .gallery-item:first-child { grid-row:auto; }
}
@media (max-width:600px) {
  .hero-stats { flex-wrap:wrap; gap:24px; }
  .process-steps { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .gallery-grid { grid-template-colu