/* ==========================================================================
   Mi Constructora — Landing Page
   Paleta corporativa: azul marino, gris, gris claro, blanco
   ========================================================================== */

:root {
  --navy-950: #0a1524;
  --navy-900: #0e1e35;
  --navy-800: #14294b;   /* primario */
  --navy-700: #1b3a66;
  --navy-600: #24548f;
  --navy-tint: #eef2f7;

  --gray-700: #4b5158;
  --gray-500: #6b7280;
  --gray-400: #9aa0a8;
  --gray-200: #e3e6ea;
  --gray-100: #f0f1f3;
  --gray-50:  #f7f8f9;

  --white: #ffffff;

  --success: #1e7d4f;
  --error: #b3261e;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 3px rgba(14, 30, 53, 0.08), 0 1px 2px rgba(14, 30, 53, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 30, 53, 0.10);
  --shadow-lg: 0 20px 48px rgba(14, 30, 53, 0.16);

  --font-head: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;

  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--navy-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
svg { max-width: 100%; }
body { overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.2; margin: 0 0 .5em; color: var(--navy-800); }
p { margin: 0 0 1em; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

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

.section {
  padding: 88px 0;
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
}

.section-tag {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--navy-600);
  background: var(--navy-tint);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.section-head {
  max-width: 680px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.section-head p { color: var(--gray-500); font-size: 1.05rem; }

.bg-alt { background: var(--gray-50); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .98rem;
  border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
  text-align: center;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary {
  background: var(--navy-800);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--navy-700); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.55);
  color: var(--white);
}
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: var(--white); }
.btn-outline-navy {
  background: transparent;
  border-color: var(--navy-800);
  color: var(--navy-800);
}
.btn-outline-navy:hover { background: var(--navy-800); color: var(--white); }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; }

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.header.is-scrolled {
  box-shadow: var(--shadow-sm);
  border-color: var(--gray-200);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 46px; width: auto; }

.nav-desktop { display: flex; align-items: center; gap: 32px; }
.nav-desktop a {
  font-weight: 600;
  font-size: .95rem;
  color: var(--navy-900);
  position: relative;
  padding: 6px 0;
}
.nav-desktop a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--navy-800);
  transform: scaleX(0); transform-origin: right;
  transition: transform .2s ease;
}
.nav-desktop a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: .95rem; color: var(--navy-800);
}
.header-phone svg { width: 20px; height: 20px; }

.nav-toggle {
  display: none;
  background: none; border: none; padding: 8px;
  color: var(--navy-800);
}
.nav-toggle svg { width: 28px; height: 28px; }

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 12px 24px 20px;
}
.nav-mobile a {
  padding: 12px 4px;
  font-weight: 600;
  border-bottom: 1px solid var(--gray-100);
}
.nav-mobile .btn { margin-top: 12px; }

@media (max-width: 900px) {
  .nav-desktop,
  .header-actions > .header-phone,
  .header-actions > .btn-primary { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-mobile.is-open { display: flex; }
}
.nav-mobile .header-phone { display: flex; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  color: var(--white);
  overflow: hidden;
  padding: 96px 0 0;
}
.hero-skyline {
  position: absolute;
  right: -60px;
  bottom: -10px;
  width: 620px;
  max-width: 55vw;
  opacity: .16;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  align-items: center;
  padding-bottom: 60px;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.18);
  padding: 7px 16px; border-radius: 999px;
  font-size: .82rem; font-weight: 600; letter-spacing: .04em;
  margin-bottom: 22px;
  flex-wrap: wrap;
  max-width: 100%;
}
.hero-eyebrow svg { width: 18px; height: 18px; flex-shrink: 0; }
.hero h1 {
  color: var(--white);
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  margin-bottom: 20px;
}
.hero h1 span { color: #9fc0ea; }
.hero p.lead {
  color: rgba(255,255,255,.82);
  font-size: 1.15rem;
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 44px; }

.hero-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-card h3 { color: var(--white); font-size: 1.15rem; margin-bottom: 18px; }
.hero-mini-list { display: flex; flex-direction: column; gap: 14px; }
.hero-mini-list li { display: flex; gap: 12px; align-items: flex-start; color: rgba(255,255,255,.9); font-size: .95rem; }
.hero-mini-list svg { width: 20px; height: 20px; flex-shrink: 0; color: #9fc0ea; margin-top: 1px; }

.trust-strip {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.12);
}
.trust-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 28px 24px;
}
.trust-item { display: flex; align-items: center; gap: 12px; color: var(--white); }
.trust-item svg { width: 30px; height: 30px; flex-shrink: 0; color: #9fc0ea; }
.trust-item span { font-size: .85rem; font-weight: 600; line-height: 1.25; }

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-card { max-width: 480px; }
}
@media (max-width: 640px) {
  .trust-strip .container { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-top: 76px; }
}

/* ==========================================================================
   Servicios
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .services-grid { grid-template-columns: 1fr; } }

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.service-icon {
  width: 54px; height: 54px;
  border-radius: 14px;
  background: var(--navy-tint);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.service-icon svg { width: 28px; height: 28px; color: var(--navy-800); }
.service-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.service-card p { color: var(--gray-500); font-size: .92rem; margin-bottom: 18px; flex-grow: 1; }
.service-link {
  font-weight: 700; font-size: .88rem; color: var(--navy-800);
  display: inline-flex; align-items: center; gap: 6px;
}
.service-link svg { width: 16px; height: 16px; transition: transform .15s ease; }
.service-card:hover .service-link svg { transform: translateX(3px); }

/* ==========================================================================
   Como trabajamos
   ========================================================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

.step { position: relative; padding-top: 8px; }
.step-num {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--navy-800);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 1.1rem;
  margin-bottom: 18px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { color: var(--gray-500); font-size: .92rem; margin: 0; }

/* ==========================================================================
   Por que elegirnos
   ========================================================================== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr; gap: 36px; } }

.why-list { display: flex; flex-direction: column; gap: 22px; }
.why-item { display: flex; gap: 16px; }
.why-item-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 12px;
  background: var(--navy-tint);
  display: flex; align-items: center; justify-content: center;
}
.why-item-icon svg { width: 22px; height: 22px; color: var(--navy-800); }
.why-item h4 { font-size: 1rem; margin-bottom: 4px; }
.why-item p { color: var(--gray-500); font-size: .92rem; margin: 0; }

.why-visual {
  background: linear-gradient(155deg, var(--navy-900), var(--navy-700));
  border-radius: var(--radius-lg);
  padding: 40px 34px;
  color: var(--white);
}
.why-visual .quote-mark { font-family: var(--font-head); font-size: 3rem; color: #9fc0ea; line-height: 1; margin-bottom: 8px; }
.why-visual p.quote { font-size: 1.15rem; color: rgba(255,255,255,.92); margin-bottom: 22px; }
.why-visual .stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; border-top: 1px solid rgba(255,255,255,.16); padding-top: 22px; }
.why-visual .stat b { display: block; font-family: var(--font-head); font-size: 1.5rem; color: var(--white); }
.why-visual .stat span { font-size: .82rem; color: rgba(255,255,255,.7); }

/* ==========================================================================
   Presupuesto (form)
   ========================================================================== */
.quote-section { background: var(--navy-tint); }
.quote-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: .85fr 1.15fr;
}
@media (max-width: 900px) { .quote-wrap { grid-template-columns: 1fr; } }

.quote-side {
  background: linear-gradient(165deg, var(--navy-900), var(--navy-700));
  color: var(--white);
  padding: 48px 40px;
}
.quote-side h2 { color: var(--white); font-size: 1.7rem; }
.quote-side p { color: rgba(255,255,255,.82); }
.quote-side-list { margin-top: 30px; display: flex; flex-direction: column; gap: 18px; }
.quote-side-list li { display: flex; gap: 12px; align-items: flex-start; font-size: .95rem; color: rgba(255,255,255,.9); }
.quote-side-list svg { width: 20px; height: 20px; color: #9fc0ea; flex-shrink: 0; margin-top: 2px; }
.quote-side-contact { margin-top: 34px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.18); }
.quote-side-contact a { display: flex; align-items: center; gap: 10px; font-weight: 600; margin-bottom: 12px; }
.quote-side-contact svg { width: 20px; height: 20px; color: #9fc0ea; }

.quote-form { padding: 48px 44px; }
@media (max-width: 560px) { .quote-side, .quote-form { padding: 34px 24px; } }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 7px; color: var(--navy-900); }
.field .hint { font-weight: 400; color: var(--gray-500); font-size: .82rem; }
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: var(--gray-50);
  transition: border-color .15s ease, background .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--navy-800);
  background: var(--white);
}
.field textarea { min-height: 130px; resize: vertical; }

.field input[type="file"] {
  width: 100%;
  border: 1.5px dashed var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 14px;
  background: var(--gray-50);
  font-size: .88rem;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
@media (max-width: 560px) { .checkbox-grid { grid-template-columns: 1fr; } }

.check-option {
  display: flex; align-items: center; gap: 10px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease;
}
.check-option:has(input:checked) {
  border-color: var(--navy-800);
  background: var(--navy-tint);
}
.check-option input { width: 17px; height: 17px; accent-color: var(--navy-800); flex-shrink: 0; }

.consent {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .85rem; color: var(--gray-500);
  margin-bottom: 22px;
}
.consent input { width: 17px; height: 17px; accent-color: var(--navy-800); margin-top: 2px; flex-shrink: 0; }
.consent a { text-decoration: underline; color: var(--navy-800); }

.honey { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

.form-msg {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.form-msg.show { display: block; }
.form-msg.success { background: #e6f4ec; color: var(--success); }
.form-msg.error { background: #fbe9e7; color: var(--error); }

.field-error {
  color: var(--error);
  font-size: .8rem;
  margin-top: 6px;
  display: none;
}
.field.has-error input,
.field.has-error textarea,
.field.has-error select { border-color: var(--error); }
.field.has-error .field-error { display: block; }

/* ==========================================================================
   Contacto
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  text-align: center;
}
.contact-card-icon {
  width: 56px; height: 56px; margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--navy-tint);
  display: flex; align-items: center; justify-content: center;
}
.contact-card-icon svg { width: 26px; height: 26px; color: var(--navy-800); }
.contact-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.contact-card p { color: var(--gray-500); font-size: .9rem; margin-bottom: 14px; }
.contact-card .value { font-family: var(--font-head); font-weight: 700; color: var(--navy-800); font-size: 1.05rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--navy-950);
  color: rgba(255,255,255,.72);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  margin-bottom: 44px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-logo-chip {
  display: inline-flex;
  align-items: center;
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  margin-bottom: 18px;
}
.footer-brand img { height: 34px; display: block; }
.footer-brand p { font-size: .9rem; max-width: 280px; }
.footer h4 { color: var(--white); font-size: .92rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 18px; }
.footer ul { display: flex; flex-direction: column; gap: 11px; }
.footer a { font-size: .9rem; }
.footer a:hover { color: var(--white); }
.footer-contact li { display: flex; align-items: center; gap: 10px; }
.footer-contact svg { width: 17px; height: 17px; flex-shrink: 0; color: #9fc0ea; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .82rem;
  color: rgba(255,255,255,.5);
}
.footer-bottom a:hover { color: var(--white); }
.footer-legal { display: flex; gap: 20px; flex-wrap: wrap; }

/* ==========================================================================
   Floating WhatsApp button
   ========================================================================== */
.whatsapp-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 600;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: #25D366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(0,0,0,.25);
  transition: transform .15s ease;
}
.whatsapp-fab:hover { transform: scale(1.08); }
.whatsapp-fab svg { width: 30px; height: 30px; color: var(--white); }

/* ==========================================================================
   Reveal animation
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Utility
   ========================================================================== */
.text-center { text-align: center; }
.mt-32 { margin-top: 32px; }