/* =========================================================
   Construcciones Ramírez — Stylesheet
   Paleta:  #F5B400 acento · #111 primario · #1E1E1E oscuro
   ========================================================= */

:root {
  --accent: #F5B400;
  --accent-dark: #d49b00;
  --black: #0A0A0A;
  --dark: #111111;
  --dark-2: #1E1E1E;
  --gray-900: #222;
  --gray-700: #444;
  --gray-600: #666;
  --gray-400: #999;
  --gray-200: #E0E0E0;
  --gray-100: #F2F2F2;
  --white: #FFFFFF;
  --container: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 12px 32px rgba(0,0,0,.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.18);
  --t: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--dark);
  background: #fff;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: transparent; }

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

/* ============ TIPOGRAFÍA ============ */
h1,h2,h3,h4,h5 { margin: 0; font-weight: 800; color: var(--dark); letter-spacing: -.02em; }
h2 { font-size: clamp(28px, 4vw, 42px); line-height: 1.15; }
h3 { font-size: 18px; }
h4 { font-size: 15px; }
p  { margin: 0 0 1rem; color: var(--gray-600); }

.eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .25em;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.eyebrow.accent { color: var(--accent); }
.accent { color: var(--accent); }

.section-head { margin-bottom: 48px; }
.section-head.center { text-align: center; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-head p { margin-top: 14px; color: var(--gray-600); font-size: 15px; }

/* ============ BOTONES ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 15px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  transition: transform .25s var(--t), background .25s, color .25s, box-shadow .25s;
  white-space: nowrap; line-height: 1;
}
.btn i { width: 18px; height: 18px; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-block { width: 100%; justify-content: center; }
.btn-primary { background: var(--accent); color: var(--dark); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 12px 24px rgba(245,180,0,.35); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: #fff; }

.arrow-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: 13px; color: var(--dark);
  margin-top: auto; padding-top: 8px;
  transition: gap .25s var(--t), color .25s;
}
.arrow-link i { width: 16px; height: 16px; }
.arrow-link:hover { color: var(--accent-dark); gap: 12px; }

/* ============ NAVBAR ============ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background .35s, padding .35s, box-shadow .35s;
}
.navbar.scrolled {
  background: rgba(10,10,10,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,.18);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  height: 44px; width: auto; display: block;
  transition: transform .3s var(--t);
}
.brand:hover .brand-logo { transform: scale(1.04); }
.navbar.scrolled .brand-logo { height: 38px; }

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: rgba(255,255,255,.8); font-size: 14px; transition: color .25s; position: relative; }
.nav-links a:not(.nav-cta):hover { color: #fff; }
.nav-links a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--t);
}
.nav-links a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta { color: var(--dark) !important; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }

/* ============ HERO ============ */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 140px 0 60px;
  color: #fff; overflow: hidden;
  background: var(--black);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.05);
  animation: heroZoom 16s ease-in-out infinite alternate;
}
@keyframes heroZoom { to { transform: scale(1.12); } }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.65) 60%, rgba(10,10,10,.85) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px; border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px; font-size: 12px; letter-spacing: .2em;
  color: rgba(255,255,255,.85); margin-bottom: 24px;
  backdrop-filter: blur(8px);
  text-transform: uppercase;
}
.hero-eyebrow .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 12px var(--accent); }

.hero-title {
  font-size: clamp(36px, 5.5vw, 60px);
  font-weight: 900; line-height: 1.05; letter-spacing: -.02em;
  color: #fff; margin: 0 0 22px;
  text-shadow: 0 4px 30px rgba(0,0,0,.4);
}
.hero-subtitle { font-size: 17px; color: rgba(255,255,255,.78); max-width: 560px; margin: 0 0 36px; line-height: 1.6; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.trust-bar {
  position: relative; z-index: 2; margin-top: 60px;
  display: flex; flex-wrap: wrap; gap: 16px 48px;
  padding-top: 36px; border-top: 1px solid rgba(255,255,255,.1);
}
.trust-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.75); font-size: 13px; }
.trust-item i { color: var(--accent); width: 18px; height: 18px; }

/* ============ SECCIONES GENERALES ============ */
.section { padding: 100px 0; }

/* ============ NOSOTROS ============ */
.nosotros { background: #fff; }
.nosotros-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.nosotros-text h2 { margin-bottom: 20px; }
.nosotros-text p { color: var(--gray-600); font-size: 15px; line-height: 1.75; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 32px; padding-top: 32px; border-top: 1px solid var(--gray-200); }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat strong { font-size: 32px; font-weight: 800; color: var(--accent); line-height: 1; }
.stat span { font-size: 12px; color: var(--gray-600); }

.nosotros-image { position: relative; }
.nosotros-image img { width: 100%; height: 480px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-md); }
.floating-badge {
  position: absolute; left: -24px; bottom: 32px;
  background: var(--dark); color: #fff; padding: 16px 22px;
  border-radius: var(--radius); display: flex; align-items: center; gap: 14px;
  box-shadow: var(--shadow-lg);
}
.floating-badge i { color: var(--accent); width: 32px; height: 32px; }
.floating-badge .badge-icon {
  width: 44px; height: 44px;
  background: #fff; border-radius: 8px; padding: 4px;
}
.floating-badge strong { display: block; font-size: 14px; }
.floating-badge span { font-size: 12px; color: rgba(255,255,255,.65); }

/* ============ SERVICIOS ============ */
.servicios { background: var(--gray-100); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 28px;
  transition: transform .35s var(--t), box-shadow .35s, border-color .35s;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.service-card .ico {
  width: 52px; height: 52px; border-radius: 12px;
  background: rgba(245,180,0,.12); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 16px; transition: background .3s, color .3s;
}
.service-card:hover .ico { background: var(--accent); color: var(--dark); }
.service-card .ico i { width: 26px; height: 26px; }
.service-card h3 { font-size: 18px; margin-bottom: 8px; }
.service-card p { font-size: 13px; line-height: 1.6; flex-grow: 1; }

/* ============ PROYECTOS ============ */
.proyectos { background: #fff; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.filter {
  padding: 10px 22px; border-radius: 999px; font-size: 13px; font-weight: 600;
  border: 1px solid var(--gray-200); color: var(--gray-700);
  transition: all .25s var(--t);
}
.filter:hover { border-color: var(--dark); color: var(--dark); }
.filter.active { background: var(--accent); border-color: var(--accent); color: var(--dark); }

.projects-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px;
}
.project {
  position: relative; grid-column: span 2;
  border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4/3; cursor: pointer;
  transition: transform .45s var(--t), opacity .35s;
  background: #1a1a1a;
}
.project.lg { grid-column: span 3; }
.project.wide { grid-column: span 3; }
.project img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .65s var(--t);
}
.project:hover img { transform: scale(1.08); }
.project::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,.85) 100%);
}
.project-info {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 20px 22px; z-index: 2; color: #fff;
}
.project-info .cat { font-size: 11px; font-weight: 600; color: var(--accent); letter-spacing: .12em; text-transform: uppercase; }
.project-info h3 { color: #fff; font-size: 18px; margin-top: 4px; }
.project.hidden { display: none; }

/* ============ CALIDAD ============ */
.calidad { background: var(--dark-2); color: #fff; }
.calidad h2 { color: #fff; }
.quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quality-card {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius); padding: 32px 24px; text-align: center;
  transition: transform .35s var(--t), background .35s, border-color .35s;
}
.quality-card:hover { transform: translateY(-4px); background: rgba(245,180,0,.08); border-color: rgba(245,180,0,.4); }
.quality-card i { color: var(--accent); width: 28px; height: 28px; margin-bottom: 14px; }
.quality-card h4 { color: #fff; font-size: 15px; margin-bottom: 8px; }
.quality-card p { color: rgba(255,255,255,.55); font-size: 13px; line-height: 1.6; margin: 0; }

/* ============ TESTIMONIOS ============ */
.testimonios { background: var(--gray-100); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial {
  background: #fff; border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 32px;
  transition: transform .35s var(--t), box-shadow .35s;
  display: flex; flex-direction: column; gap: 16px;
}
.testimonial:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stars { color: var(--accent); font-size: 16px; letter-spacing: 2px; }
.testimonial p { color: var(--gray-700); font-size: 14px; font-style: italic; line-height: 1.7; margin: 0; }
.author { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--dark); font-weight: 700; font-size: 14px;
}
.author strong { display: block; font-size: 14px; color: var(--dark); }
.author span { font-size: 12px; color: var(--gray-600); }

/* ============ CTA FINAL + FORM ============ */
.cta-final { background: var(--dark); color: #fff; padding: 100px 0; }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.cta-logo { height: 64px; width: auto; display: block; margin-bottom: 24px; opacity: .95; }
.cta-text h2 { color: #fff; font-size: clamp(28px, 3.6vw, 38px); margin-bottom: 18px; }
.cta-text p { color: rgba(255,255,255,.65); font-size: 15px; line-height: 1.7; }
.cta-contact { list-style: none; padding: 0; margin: 28px 0 0; display: flex; flex-direction: column; gap: 12px; }
.cta-contact li { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.85); font-size: 14px; }
.cta-contact a { color: inherit; }
.cta-contact a:hover { color: var(--accent); }
.cta-contact i { color: var(--accent); width: 18px; height: 18px; }

.cta-form {
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius); padding: 36px; display: flex; flex-direction: column; gap: 16px;
  backdrop-filter: blur(8px);
}
.cta-form h3 { color: #fff; font-size: 20px; }
.cta-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cta-form label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: rgba(255,255,255,.75); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }
.cta-form input, .cta-form select, .cta-form textarea {
  font-family: inherit; font-size: 14px; color: #fff;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm); padding: 12px 14px; outline: none;
  transition: border-color .25s, background .25s;
}
.cta-form input::placeholder, .cta-form textarea::placeholder { color: rgba(255,255,255,.35); }
.cta-form input:focus, .cta-form select:focus, .cta-form textarea:focus { border-color: var(--accent); background: rgba(245,180,0,.06); }
.cta-form select option { background: var(--dark); color: #fff; }
.cta-form textarea { resize: vertical; }
.cta-form .invalid { border-color: #ff5555 !important; }
.form-note { color: rgba(255,255,255,.5); font-size: 12px; text-align: center; margin: 4px 0 0; }

/* ============ FOOTER ============ */
.footer { background: var(--black); color: #999; padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer h5 { color: #fff; font-size: 13px; letter-spacing: .18em; margin-bottom: 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer a { color: #999; font-size: 13px; transition: color .25s; }
.footer a:hover { color: var(--accent); }
.contact-list li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: #999; }
.contact-list i { color: var(--accent); width: 16px; height: 16px; }
.footer-logo { height: 52px; width: auto; display: block; margin-bottom: 16px; }
.footer-tag { color: #888; font-size: 13px; max-width: 280px; line-height: 1.55; margin: 14px 0 18px; }
.social { display: flex; gap: 12px; }
.social a {
  width: 36px; height: 36px; border-radius: 8px;
  background: rgba(255,255,255,.05); display: inline-flex; align-items: center; justify-content: center;
  transition: background .25s, color .25s;
}
.social a:hover { background: var(--accent); color: var(--dark); }
.social i { width: 16px; height: 16px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.06);
  color: #666; font-size: 12px; flex-wrap: wrap;
}

/* ============ WHATSAPP FLOTANTE ============ */
.whatsapp-float {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 60px; height: 60px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(37,211,102,.4);
  transition: transform .25s, box-shadow .25s;
}
.whatsapp-float:hover { transform: scale(1.08); box-shadow: 0 12px 36px rgba(37,211,102,.6); }
.wa-pulse {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid #25D366; animation: pulse 1.8s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* ============ TO TOP ============ */
.to-top {
  position: fixed; right: 24px; bottom: 96px; z-index: 89;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--dark); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .3s, transform .3s, background .3s;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--accent); color: var(--dark); }
.to-top i { width: 18px; height: 18px; }

/* ============ TOAST ============ */
.toast {
  position: fixed; left: 50%; bottom: 32px;
  transform: translateX(-50%) translateY(80px);
  background: var(--dark); color: #fff;
  padding: 14px 22px; border-radius: var(--radius-sm);
  font-size: 14px; box-shadow: var(--shadow-lg);
  opacity: 0; transition: transform .35s var(--t), opacity .35s;
  z-index: 200; max-width: 90vw;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ============ REVEAL ANIMATION ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--t), transform .8s var(--t); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .nosotros-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .project, .project.lg, .project.wide { grid-column: span 1; }
  .cta-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .brand-logo { height: 36px; }
  .navbar.scrolled .brand-logo { height: 32px; }
  .menu-toggle { display: flex; }
  .nav-links {
    position: fixed; inset: 70px 0 auto 0;
    background: rgba(10,10,10,.98); backdrop-filter: blur(14px);
    flex-direction: column; gap: 0; padding: 24px 0;
    transform: translateY(-150%); transition: transform .35s var(--t);
    border-top: 1px solid rgba(255,255,255,.06);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; padding: 14px 24px; font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-cta { margin: 12px 24px 0; width: calc(100% - 48px); justify-content: center; }
  .menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.open span:nth-child(2) { opacity: 0; }
  .menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { padding-top: 110px; min-height: 92vh; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .trust-bar { gap: 14px 24px; }

  .floating-badge { left: 16px; bottom: 16px; padding: 12px 16px; }
  .nosotros-image img { height: 320px; }

  .services-grid { grid-template-columns: 1fr; }
  .quality-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cta-form .row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .whatsapp-float { width: 54px; height: 54px; right: 16px; bottom: 16px; }
  .to-top { right: 16px; bottom: 80px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 32px; }
  h2 { font-size: 26px; }
}

/* ============ PRINT ============ */
@media print {
  .navbar, .whatsapp-float, .to-top, .cta-form { display: none !important; }
}

/* ============ MOTION REDUCE ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-bg { animation: none; }
}