/* ============================================================
   Water Proof System S.A.S. — styles.css
   Palette: Steel Blue #3A7DBA | Parchment #F4F3EE | Bronze #D9822B | Charcoal #4A4A4A
   ============================================================ */

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:        #3A7DBA;
  --blue-dark:   #1f4d7a;
  --blue-light:  #deeaf5;
  --blue-mid:    #4d8ec4;
  --bronze:      #D9822B;
  --bronze-dark: #b86b1f;
  --text:        #4A4A4A;
  --text-muted:  #707070;
  --white:       #ffffff;
  --parchment:   #F4F3EE;
  --bg-light:    #F4F3EE;
  --radius:      10px;
  --shadow:      0 4px 20px rgba(31,77,122,0.10);
  --transition:  0.25s ease;
}

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

body {
  font-family: 'Open Sans', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul { list-style: none; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  line-height: 1.25;
  color: var(--blue-dark);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; }
h3 { font-size: clamp(1rem, 2vw, 1.2rem); font-weight: 600; }

/* ===== LAYOUT ===== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: 5rem 0; }
.bg-light { background: var(--bg-light); }

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}
.section-header h2 { margin-bottom: .75rem; }
.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto;
}
.section-header--white h2,
.section-header--white .section-sub { color: rgba(255,255,255,0.92); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.8rem;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--bronze);
  color: var(--white);
  border-color: var(--bronze);
}
.btn-primary:hover {
  background: var(--bronze-dark);
  border-color: var(--bronze-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(217,130,43,0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}
.btn-linkedin {
  background: #0077B5;
  color: var(--white);
  margin-top: 1rem;
  width: 100%;
  justify-content: center;
}
.btn-linkedin svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-linkedin:hover {
  background: #005f91;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,119,181,0.35);
}
.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  margin-top: .75rem;
  width: 100%;
  justify-content: center;
}
.btn-whatsapp svg { width: 22px; height: 22px; flex-shrink: 0; }
.btn-whatsapp:hover {
  background: #1ebe5d;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37,211,102,0.35);
}
.form-success {
  margin-top: 1rem;
  padding: .9rem 1rem;
  background: #eaf7ee;
  border: 1.5px solid #27ae60;
  border-radius: 8px;
  color: #1e7e34;
  font-weight: 600;
  font-size: .9rem;
  text-align: center;
}
.btn-full { width: 100%; justify-content: center; }

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(26,58,92,0.10);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--blue-dark);
}
.logo-sas { color: var(--blue); }
.logo-tagline {
  font-size: .72rem;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.site-nav ul {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.site-nav a {
  font-family: 'Montserrat', sans-serif;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  padding: .25rem 0;
  position: relative;
}
.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width var(--transition);
}
.site-nav a:hover::after,
.site-nav a:focus::after { width: 100%; }
.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: .5rem 1.2rem !important;
  border-radius: 50px;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--blue-dark) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px; height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%; height: 2px;
  background: var(--blue-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1f4d7a 0%, #2d6da3 55%, #3A7DBA 100%);
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.07) 0%, transparent 40%);
}
.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  max-width: 700px;
  padding: 5rem 1.5rem 7rem;
}
.hero-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: 1rem;
}
.hero h1 { color: var(--white); margin-bottom: 1.25rem; }
.highlight { color: var(--bronze); }
.hero-sub {
  font-size: 1.1rem;
  opacity: .9;
  margin-bottom: 2rem;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-wave {
  position: absolute;
  bottom: -1px; left: 0; right: 0;
}
.hero-wave svg { width: 100%; height: 60px; display: block; }

/* ===== NOSOTROS ===== */
.nosotros-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.nosotros-text p { color: var(--text-muted); margin-bottom: 1rem; }
.nosotros-text p:last-child { margin-bottom: 0; }
.nosotros-text strong { color: var(--blue-dark); }
.nosotros-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.nosotros-stats .stat-card:last-child { grid-column: 1 / -1; }
.stat-card {
  background: var(--blue-light);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  border-top: 4px solid var(--blue);
}
.stat-num {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: .4rem;
}
.stat-label {
  font-size: .85rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ===== HISTORIA ===== */
.section-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: .75rem;
}
.historia-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 4rem;
  align-items: start;
}
.historia-text h2 { margin-bottom: 1.5rem; }
.historia-text p { color: var(--text-muted); margin-bottom: 1rem; line-height: 1.8; }
.historia-text p:last-child { margin-bottom: 0; }
.historia-text strong { color: var(--text); }
.historia-aside { display: flex; flex-direction: column; gap: 1.5rem; }
.historia-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .75rem;
  border-left: 4px solid var(--blue);
}
.historia-icon {
  width: 44px; height: 44px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
}
.historia-icon svg { width: 22px; height: 22px; }
.historia-card h3 { font-size: .95rem; color: var(--blue-dark); }
.historia-card p { font-size: .88rem; color: var(--text-muted); margin: 0; }

@media (max-width: 900px) {
  .historia-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

/* ===== SERVICIOS ===== */
.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}
.servicio-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow);
  border-bottom: 4px solid transparent;
  transition: all var(--transition);
}
.servicio-card:hover {
  transform: translateY(-5px);
  border-bottom-color: var(--blue);
  box-shadow: 0 10px 30px rgba(31,77,122,0.15);
}
.servicio-icon {
  width: 56px; height: 56px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--blue);
}
.servicio-icon svg { width: 28px; height: 28px; }
.servicio-card h3 { margin-bottom: .75rem; font-size: 1rem; color: var(--blue-dark); }
.servicio-card p { color: var(--text-muted); font-size: .9rem; line-height: 1.65; }

/* ===== CLIENTES ===== */
.clientes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
  text-align: center;
}
.cliente-item {
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}
.cliente-item:hover { background: var(--blue-light); }
.cliente-icon {
  width: 72px; height: 72px;
  background: var(--blue-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: var(--blue);
  transition: all var(--transition);
}
.cliente-item:hover .cliente-icon {
  background: var(--blue);
  color: var(--white);
}
.cliente-icon svg { width: 36px; height: 36px; }
.cliente-item h3 { margin-bottom: .6rem; font-size: 1rem; }
.cliente-item p { color: var(--text-muted); font-size: .88rem; }

/* ===== POR QUÉ ===== */
.bg-blue { background: linear-gradient(135deg, #1f4d7a, #2d6da3); color: var(--white); }
.por-que h2 { color: var(--white); }
.porque-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 2rem;
}
.porque-item {
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.12);
  transition: background var(--transition);
}
.porque-item:hover { background: rgba(255,255,255,0.14); }
.porque-num {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bronze);
  line-height: 1;
  margin-bottom: .75rem;
}
.porque-item h3 { color: var(--white); margin-bottom: .5rem; font-size: 1rem; }
.porque-item p { color: rgba(255,255,255,0.78); font-size: .9rem; }

/* ===== CONTACTO ===== */
.contacto-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}
.contacto-info h3, .contacto-form h3 {
  font-size: 1.1rem;
  color: var(--blue-dark);
  margin-bottom: 1.5rem;
  padding-bottom: .75rem;
  border-bottom: 2px solid var(--blue-light);
}
.contacto-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.contacto-list svg {
  width: 22px; height: 22px;
  color: var(--blue);
  flex-shrink: 0;
  margin-top: 2px;
}
.contacto-list strong {
  display: block;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: .15rem;
}
.contacto-list a {
  color: var(--blue-dark);
  font-weight: 600;
  font-size: 1rem;
}
.contacto-list a:hover { color: var(--blue); }

/* ===== FORM ===== */
.contacto-form {
  background: var(--bg-light);
  padding: 2.5rem;
  border-radius: var(--radius);
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: .4rem;
  color: var(--blue-dark);
}
.form-group label span { color: var(--bronze); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid #cddde8;
  border-radius: 8px;
  font-family: 'Open Sans', sans-serif;
  font-size: .95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(41,128,185,0.15);
}
.form-group textarea { resize: vertical; min-height: 110px; }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--blue-dark);
  color: rgba(255,255,255,0.8);
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  padding: 4rem 1.5rem 3rem;
}
.footer-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: .25rem;
}
.footer-tagline {
  font-size: .8rem;
  color: rgba(255,255,255,0.55);
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-desc { font-size: .88rem; line-height: 1.6; }
.footer-nav h4,
.footer-contact h4 {
  color: var(--white);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 1rem;
  font-family: 'Montserrat', sans-serif;
}
.footer-nav ul li { margin-bottom: .5rem; }
.footer-nav a {
  font-size: .88rem;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--white); }
.footer-contact address {
  font-style: normal;
  font-size: .88rem;
}
.footer-contact p { margin-bottom: .5rem; }
.footer-contact a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}
.footer-contact a:hover { color: var(--white); }
.footer-linkedin {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1rem;
  color: rgba(255,255,255,0.6);
  font-size: .85rem;
  transition: color var(--transition);
}
.footer-linkedin:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: .8rem;
  color: rgba(255,255,255,0.45);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .nosotros-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .nosotros-stats { grid-template-columns: repeat(3, 1fr); }
  .nosotros-stats .stat-card:last-child { grid-column: auto; }
  .contacto-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .section { padding: 3.5rem 0; }
  .site-nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--white); box-shadow: 0 8px 20px rgba(26,58,92,0.12); padding: 1rem 1.5rem 1.5rem; }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: .75rem; align-items: flex-start; }
  .nav-toggle { display: flex; }
  .servicios-grid { grid-template-columns: 1fr; }
  .porque-grid { grid-template-columns: 1fr; }
  .clientes-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-brand { grid-column: auto; }
  .hero-content { padding: 4rem 1.5rem 6rem; }
  .hero-actions { flex-direction: column; }
  .nosotros-stats { grid-template-columns: 1fr 1fr; }
  .nosotros-stats .stat-card:last-child { grid-column: 1 / -1; }
  .contacto-form { padding: 1.5rem; }
}

@media (max-width: 420px) {
  .clientes-grid { grid-template-columns: 1fr; }
}

/* ===== ACCESSIBILITY ===== */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}