/* ─── VARIABLES ─────────────────────────────────────────────────────────────── */
:root {
  --negro: #0a0a0a;
  --negro-2: #141414;
  --negro-3: #1e1e1e;
  --amarillo: #FFD000;
  --amarillo-dark: #d4900a;
  --gris: #888888;
  --gris-claro: #cccccc;
  --blanco: #f5f5f5;
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --transition: 0.3s ease;
  --shadow: 0 4px 30px rgba(0,0,0,0.5);
}

/* ─── RESET ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--negro);
  color: var(--blanco);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ─── UTILIDADES ─────────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.accent { color: var(--amarillo); }
.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--amarillo);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--amarillo);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

/* ─── BOTONES ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  border-radius: 0;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  font-weight: 600;
}
.btn-primary {
  background: var(--amarillo);
  color: var(--negro);
  border-color: var(--amarillo);
}
.btn-primary:hover {
  background: var(--amarillo-dark);
  border-color: var(--amarillo-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(245, 168, 0, 0.3);
}
.btn-outline {
  background: transparent;
  color: var(--blanco);
  border-color: rgba(255,255,255,0.4);
}
.btn-outline:hover {
  border-color: var(--amarillo);
  color: var(--amarillo);
  transform: translateY(-2px);
}

/* ─── NAVBAR ─────────────────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(10,10,10,0.97);
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(245,168,0,0.2);
  backdrop-filter: blur(10px);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--amarillo);
  letter-spacing: 0.05em;
}
.logo-sub {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--gris-claro);
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
  align-items: center;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gris-claro);
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--amarillo);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--blanco); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  background: var(--amarillo) !important;
  color: var(--negro) !important;
  padding: 0.5rem 1.2rem !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--amarillo-dark) !important; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--blanco);
  transition: var(--transition);
}

/* ─── HERO ───────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 0 2rem;
  text-align: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,168,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,168,0,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-stripe {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(245,168,0,0.06) 0%, transparent 70%);
}
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 5rem;
}
.hero-brand {
  animation: fadeInDown 0.9s ease both;
  margin-bottom: 1.5rem;
}
.hero-brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7.5vw, 6.8rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blanco);
  line-height: 0.9;
}
.hero-brand-name span { color: var(--amarillo); }
.hero-brand-sub {
  display: block;
  font-family: var(--font-body);
  font-size: clamp(0.7rem, 1.5vw, 0.9rem);
  font-weight: 400;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--gris-claro);
  margin-top: 1rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease 0.5s both;
}
.hero-accent {
  color: var(--amarillo);
  display: inline-block;
}
.hero-subtitle {
  font-size: 1rem;
  color: var(--gris-claro);
  max-width: 520px;
  margin: 0 auto 2rem;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.7s both;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 3rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  animation: fadeInUp 0.8s ease 0.9s both;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--amarillo);
  line-height: 1;
}
.stat-label {
  font-size: 0.7rem;
  color: var(--gris);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.stat-divider {
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,0.12);
}
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 1;
}
.hero-scroll span {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--gris);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--amarillo), transparent);
  animation: scrollPulse 2s ease infinite;
}

/* ─── NOSOTROS ───────────────────────────────────────────────────────────────── */
.nosotros {
  padding: 7rem 0;
  background: var(--negro-2);
}
.nosotros-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.nosotros-text p {
  color: var(--gris-claro);
  margin-bottom: 1.2rem;
  font-size: 1rem;
}
.nosotros-text strong { color: var(--blanco); font-weight: 500; }
.provincias { margin-top: 2rem; }
.prov-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--gris);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}
.prov-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.prov-tags span {
  font-family: var(--font-display);
  font-size: 0.8rem;
  padding: 0.3rem 0.9rem;
  border: 1px solid rgba(245,168,0,0.4);
  color: var(--amarillo);
  letter-spacing: 0.1em;
}
.nosotros-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.value-card {
  background: var(--negro-3);
  padding: 1.8rem 1.5rem;
  border-top: 2px solid var(--amarillo);
  transition: var(--transition);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.value-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }
.value-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.value-card p { font-size: 0.875rem; color: var(--gris-claro); }

/* ─── SERVICIOS ──────────────────────────────────────────────────────────────── */
.servicios {
  padding: 7rem 0;
  background: var(--negro);
}
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: rgba(245,168,0,0.1);
  border: 1px solid rgba(245,168,0,0.1);
}
.servicio-card {
  background: var(--negro);
  padding: 2.5rem 2rem;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}
.servicio-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: var(--amarillo);
  transition: height 0.4s ease;
}
.servicio-card:hover::before { height: 100%; }
.servicio-card:hover { background: var(--negro-3); }
.servicio-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(245,168,0,0.2);
  line-height: 1;
  margin-bottom: 1rem;
  transition: var(--transition);
}
.servicio-card:hover .servicio-num {
  color: rgba(245,168,0,1);
}
.servicio-card:hover .servicio-num { color: rgba(245,168,0,2); }
.servicio-icon { font-size: 2rem; margin-bottom: 1rem; }
.servicio-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.servicio-card p { font-size: 0.875rem; color: var(--gris-claro); line-height: 1.6; }
.servicio-cta {
  background: var(--amarillo) !important;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  grid-column: 1 / -1;
  padding: 1.5rem 3rem;
}
.servicio-cta::before { background: var(--negro) !important; }
.servicio-cta h3, .servicio-cta p { color: var(--negro) !important; }
.servicio-cta .btn-primary {
  background: var(--negro);
  color: var(--amarillo);
  border-color: var(--negro);
  align-self: flex-start;
}
.servicio-cta .btn-primary:hover { background: var(--negro-3); }

/* ─── PORTFOLIO ──────────────────────────────────────────────────────────────── */
.portfolio {
  padding: 7rem 0;
  background: var(--negro-2);
}
.portfolio-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.portfolio-loading {
  grid-column: 1/-1;
  text-align: center;
  color: var(--gris);
  padding: 4rem;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}
.portfolio-empty {
  grid-column: 1/-1;
  text-align: center;
  padding: 5rem 2rem;
  color: var(--gris);
}
.portfolio-empty h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.obra-card {
  background: var(--negro-3);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}
.obra-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.obra-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.obra-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.obra-card:hover .obra-img-wrap img { transform: scale(1.05); }
.obra-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%);
}
.obra-info { padding: 1.5rem; }
.obra-titulo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}
.obra-ubicacion {
  font-size: 0.8rem;
  color: var(--amarillo);
  margin-bottom: 0.6rem;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}
.obra-desc { font-size: 0.875rem; color: var(--gris-claro); }
.obra-delete {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  background: rgba(0,0,0,0.7);
  border: none;
  color: #ff4444;
  width: 30px; height: 30px;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  border-radius: 2px;
}
.obra-card:hover .obra-delete { opacity: 1; }
.obra-delete:hover { background: rgba(255,0,0,0.3); }

/* ─── MODAL ──────────────────────────────────────────────────────────────────── */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  backdrop-filter: blur(4px);
}
.modal.active { display: flex; }
.modal-content {
  background: var(--negro-3);
  padding: 2.5rem;
  width: 100%;
  max-width: 500px;
  position: relative;
  border-top: 3px solid var(--amarillo);
}
.modal-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: none;
  border: none;
  color: var(--gris);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover { color: var(--amarillo); }

/* ─── FORMULARIOS ────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: 0.4rem;
}
input, textarea, select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--blanco);
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: var(--transition);
  border-radius: 0;
  outline: none;
}
input:focus, textarea:focus {
  border-color: var(--amarillo);
  background: rgba(245,168,0,0.05);
}
input[type="file"] { cursor: pointer; }
textarea { resize: vertical; }
.form-feedback {
  margin-top: 1rem;
  font-size: 0.875rem;
  min-height: 1.5rem;
}
.form-feedback.success { color: #4caf50; }
.form-feedback.error { color: #f44336; }

/* ─── CONTACTO ───────────────────────────────────────────────────────────────── */
.contacto {
  padding: 7rem 0;
  background: var(--negro);
}
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: start;
}
.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.info-item:last-child { border-bottom: none; }
.info-icon { font-size: 1.5rem; margin-top: 0.2rem; }
.info-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gris);
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.info-value { font-size: 0.95rem; color: var(--blanco); }

/* ─── FOOTER ─────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--negro-2);
  border-top: 1px solid rgba(245,168,0,0.15);
  padding: 3rem 0;
}
.footer-content { text-align: center; }
.footer .logo-text { font-size: 1.6rem; }
.footer-logo { margin-bottom: 1rem; display: inline-flex; flex-direction: column; align-items: center; }
.footer-copy { font-size: 0.8rem; color: var(--gris); margin-bottom: 0.3rem; }
.footer-tagline { font-size: 0.8rem; color: rgba(245,168,0,0.5); font-family: var(--font-display); letter-spacing: 0.15em; }

/* ─── WHATSAPP FLOTANTE ──────────────────────────────────────────────────────── */
.whatsapp-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 58px;
  height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
  animation: pulse 2.5s ease infinite;
}
.whatsapp-btn svg { width: 30px; height: 30px; color: #fff; }
.whatsapp-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 6px 30px rgba(37,211,102,0.6);
  animation: none;
}

/* ─── ANIMACIONES ────────────────────────────────────────────────────────────── */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.7); }
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,0.4); }
  50% { box-shadow: 0 4px 35px rgba(37,211,102,0.7); }
}
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ─────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nosotros-grid { grid-template-columns: 1fr; gap: 3rem; }
  .servicios-grid { grid-template-columns: repeat(2, 1fr); }
  .contacto-grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--negro);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.5rem; }
  .nav-toggle { display: flex; z-index: 1000; }
  .servicios-grid { grid-template-columns: 1fr; }
  .nosotros-values { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.2rem; }
  .stat-num { font-size: 2rem; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; }
  .portfolio-header { flex-direction: column; align-items: flex-start; }
}

/* ─── LIGHTBOX / CARRUSEL ────────────────────────────────────────────────────── */
#lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 3000;
  align-items: center;
  justify-content: center;
}
#lightbox.active { display: flex; }
.lb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(6px);
}
.lb-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 3rem;
}
#lbImg {
  max-width: 85vw;
  max-height: 85vh;
  width: 85vw;
  object-fit: contain;
  display: block;
  box-shadow: 0 0 60px rgba(0,0,0,0.8);
}
.lb-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none;
  border: none;
  color: var(--gris-claro);
  font-size: 1.8rem;
  cursor: pointer;
  transition: var(--transition);
  z-index: 2;
  line-height: 1;
}
.lb-close:hover { color: var(--amarillo); }
.lb-nav {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--blanco);
  font-size: 2.5rem;
  width: 50px; height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  z-index: 2;
  line-height: 1;
}
.lb-nav:hover { background: var(--amarillo); color: var(--negro); border-color: var(--amarillo); }
.lb-prev { left: 1.5rem; }
.lb-next { right: 1.5rem; }
.lb-counter {
  position: absolute;
  bottom: 1.5rem; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--gris);
}
.obra-foto-count {
  position: absolute;
  bottom: 0.75rem; right: 0.75rem;
  background: rgba(0,0,0,0.7);
  color: var(--blanco);
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.6rem;
  border-radius: 2px;
}