/* ============================================================
   J&A Reformas Integrales — Hoja de estilos principal
   Colores de marca: azul #0A46E4 · naranja #FF5A00
   ============================================================ */

:root {
  --blue: #0a46e4;
  --orange: #ff5a00;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.16);
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Syne", "Plus Jakarta Sans", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

::selection { background: var(--orange); color: var(--white); }

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.text-blue { color: var(--blue); }
.text-orange { color: var(--orange); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, color 0.2s, box-shadow 0.2s;
  font-family: var(--font-sans);
  text-align: center;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(255, 90, 0, 0.25);
}
.btn-primary:hover { background: #e65100; transform: scale(1.02); }

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 1.5px solid var(--blue);
}
.btn-outline:hover { background: var(--blue); color: var(--white); }

.btn-sm { font-size: 0.75rem; padding: 0.7rem 1.1rem; }
.btn-lg { font-size: 0.875rem; padding: 1rem 2rem; }
.btn-block { width: 100%; }

.icon { width: 0.9em; height: 0.9em; fill: none; stroke: currentColor; stroke-width: 2; }

/* ---------- Banner superior ---------- */
.topbar {
  background: var(--blue);
  color: var(--white);
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(255, 90, 0, 0.25);
}

.topbar-icon { color: var(--orange); animation: pulse 2s infinite; }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ---------- Cabecera ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  gap: 1rem;
}

.brand { display: flex; align-items: center; gap: 0.75rem; }

.brand-logo {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  object-fit: contain;
  background: var(--white);
  border: 1px solid var(--slate-100);
  box-shadow: var(--shadow-sm);
}

.brand-text { display: flex; flex-direction: column; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  color: var(--blue);
}
.brand-name em { font-style: normal; color: var(--orange); }

.brand-tagline {
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--slate-500);
}

.nav-desktop { display: none; gap: 2rem; font-size: 0.875rem; font-weight: 700; }
.nav-desktop a { color: var(--slate-600); padding: 0.5rem 0; transition: color 0.2s; }
.nav-desktop a:hover { color: var(--blue); }

.header-actions { display: none; align-items: center; gap: 0.75rem; }

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background: var(--slate-800);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 1.5rem 1.75rem;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-md);
}
.nav-mobile.open { display: flex; }

.nav-mobile-logo { display: flex; justify-content: center; padding-bottom: 0.75rem; border-bottom: 1px solid var(--slate-100); }
.nav-mobile-logo img {
  width: 84px;
  height: 84px;
  border-radius: 14px;
  object-fit: contain;
  border: 1px solid var(--slate-100);
  box-shadow: var(--shadow-sm);
}

.nav-mobile > a {
  font-weight: 700;
  color: var(--slate-800);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--slate-100);
}
.nav-mobile > a:hover { color: var(--blue); }

.nav-mobile-actions { display: flex; flex-direction: column; gap: 0.75rem; padding-top: 1rem; }
.nav-mobile-actions .btn { padding: 0.9rem; font-size: 0.8rem; }

/* ---------- Hero ---------- */
.hero {
  padding: 3rem 0 4rem;
  background: linear-gradient(135deg, var(--slate-50) 0%, var(--white) 55%, #eff4ff 100%);
  overflow: hidden;
}

.hero-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  background: rgba(10, 70, 228, 0.08);
  color: var(--blue);
  border: 1px solid rgba(10, 70, 228, 0.15);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
}

.hero-text { display: flex; flex-direction: column; gap: 1.5rem; }

.hero-text h1 {
  font-size: clamp(2.2rem, 6vw, 3.75rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.hero-lead { font-size: 1.1rem; color: var(--slate-600); font-weight: 500; max-width: 36rem; }

.hero-buttons { display: flex; flex-direction: column; gap: 1rem; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--slate-200);
}

.stat { display: flex; flex-direction: column; }
.stat-value { font-family: var(--font-display); font-size: 1.9rem; font-weight: 800; color: var(--slate-800); }
.stat-label {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--slate-500);
  margin-top: 0.25rem;
}

.hero-image { display: flex; justify-content: center; }

.hero-figure {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--white);
}
.hero-figure > img { width: 100%; height: 100%; object-fit: cover; }

.hero-card {
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--slate-100);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 0.9rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-card-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.hero-card strong { display: block; font-size: 0.85rem; }
.hero-card small { display: block; font-size: 0.72rem; color: var(--slate-500); font-weight: 500; }

/* ---------- Secciones ---------- */
.section { padding: 4.5rem 0; border-bottom: 1px solid var(--slate-100); }
.section-alt { background: var(--slate-50); }

.section-head { text-align: center; max-width: 42rem; margin: 0 auto 3.5rem; }
.section-head p { color: var(--slate-500); font-weight: 500; margin-top: 1rem; }

.section-head-split {
  text-align: left;
  max-width: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.section-head-split .rule { margin-left: 0; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue);
}

.section h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-top: 0.5rem;
  line-height: 1.15;
}

.rule {
  width: 64px;
  height: 4px;
  background: var(--orange);
  border-radius: 999px;
  margin: 1rem auto 0;
}

.section-lead { color: var(--slate-500); font-weight: 500; margin: 1rem 0 1.5rem; }

/* ---------- Tarjetas de servicios ---------- */
.cards-grid { display: grid; grid-template-columns: 1fr; gap: 1.75rem; }

.service-card {
  background: rgba(248, 250, 252, 0.6);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
}
.service-card:hover {
  border-color: rgba(10, 70, 228, 0.3);
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1.25rem;
  transition: background 0.3s, color 0.3s;
}
.icon-blue { background: rgba(10, 70, 228, 0.1); color: var(--blue); }
.icon-orange { background: rgba(255, 90, 0, 0.1); color: var(--orange); }
.service-card:hover .icon-blue { background: var(--blue); color: var(--white); }
.service-card:hover .icon-orange { background: var(--orange); color: var(--white); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
}
.service-card p { font-size: 0.875rem; color: var(--slate-500); font-weight: 500; margin-top: 0.75rem; }

/* ---------- Filtros de proyectos ---------- */
.filter-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.tab {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--slate-200);
  background: var(--white);
  color: var(--slate-600);
  cursor: pointer;
  transition: all 0.2s;
}
.tab:hover { background: var(--slate-100); }
.tab.active {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
  box-shadow: 0 4px 10px rgba(10, 70, 228, 0.15);
}

/* ---------- Tarjetas de proyectos ---------- */
.project-card {
  background: var(--white);
  border: 1px solid rgba(226, 232, 240, 0.6);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: box-shadow 0.3s, transform 0.3s;
}
.project-card:hover { box-shadow: var(--shadow-lg); }
.project-card.hidden { display: none; }

.project-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--slate-100);
}
.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.project-card:hover .project-media img { transform: scale(1.05); }

.project-zoom {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: linear-gradient(to top, rgba(2, 6, 23, 0.6), transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
}
.project-card:hover .project-zoom { opacity: 1; }

.project-body { padding: 1.5rem; }

.project-tag {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}
.project-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 0.25rem;
  transition: color 0.2s;
}
.project-card:hover .project-body h3 { color: var(--blue); }
.project-body p { font-size: 0.78rem; color: var(--slate-500); font-weight: 500; margin-top: 0.5rem; }

/* ---------- Lightbox ---------- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.lightbox.open { display: flex; }

.lightbox img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: 12px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.6);
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.2s;
}
.lightbox-close:hover { background: rgba(0, 0, 0, 0.85); }

/* ---------- Nosotros ---------- */
.about-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }

.about-photo { display: flex; justify-content: center; }

.about-figure {
  position: relative;
  width: 100%;
  max-width: 360px;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-lg);
}
.about-figure img { width: 100%; height: 100%; object-fit: cover; }
.about-figure figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.5rem;
  color: var(--white);
  background: linear-gradient(to top, rgba(2, 6, 23, 0.85), rgba(2, 6, 23, 0.4) 60%, transparent);
}
.about-figure strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  text-transform: uppercase;
  display: block;
}
.about-figure small { font-size: 0.75rem; color: var(--slate-200); font-weight: 500; }

.about-text .rule { margin-left: 0; }
.about-text > p { color: var(--slate-600); font-weight: 500; margin-top: 1.5rem; }

.guarantees {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.guarantee { display: flex; align-items: flex-start; gap: 0.75rem; }
.guarantee .check { color: var(--orange); font-weight: 800; flex-shrink: 0; margin-top: 0.1rem; }
.guarantee strong { display: block; font-size: 0.875rem; }
.guarantee small { display: block; font-size: 0.75rem; color: var(--slate-500); font-weight: 500; margin-top: 0.2rem; }

/* ---------- Contacto ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; }

.contact-form-col .rule { margin-left: 0; }

#contact-form { display: flex; flex-direction: column; gap: 1rem; }

.form-row { display: grid; grid-template-columns: 1fr; gap: 1rem; }

.form-field { display: flex; flex-direction: column; gap: 0.4rem; }

.form-field label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--slate-600);
  letter-spacing: 0.03em;
}

.form-field input,
.form-field select,
.form-field textarea {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate-800);
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--slate-400); }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: transparent;
  box-shadow: 0 0 0 2px var(--blue);
}

.form-feedback {
  display: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 10px;
  padding: 1rem;
  border: 1px solid;
}
.form-feedback.ok {
  display: block;
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}
.form-feedback.error {
  display: block;
  background: #fef2f2;
  border-color: #fecaca;
  color: #b91c1c;
}

.contact-info-col { display: flex; flex-direction: column; gap: 1.5rem; }

.info-card {
  background: var(--white);
  border: 1px solid var(--slate-100);
  border-radius: 16px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.info-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
}

.info-item { display: flex; align-items: flex-start; gap: 0.75rem; }
.info-icon { flex-shrink: 0; }
.info-item strong {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.info-item small { display: block; font-size: 0.78rem; color: var(--slate-500); font-weight: 500; margin-top: 0.2rem; overflow-wrap: anywhere; }
.info-item a:hover { color: var(--blue); }

.map-wrap {
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-md);
}
.map-wrap iframe { width: 100%; height: 100%; display: block; }

/* ---------- Pie de página ---------- */
.footer {
  background: var(--slate-900);
  color: var(--slate-400);
  padding: 3rem 0 0;
  border-top: 1px solid var(--slate-800);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

.footer-brand p { font-size: 0.78rem; font-weight: 500; margin-top: 1rem; max-width: 20rem; }
.footer-brand .brand-logo { background: var(--white); }
.footer-brand-name { color: var(--white); }

.footer h4 {
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-links, .footer-contact { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.footer-links a:hover, .footer-contact a:hover { color: var(--white); }
.footer-contact a, .footer-contact p { font-size: 0.8rem; font-weight: 500; overflow-wrap: anywhere; }

.footer-bottom {
  border-top: 1px solid var(--slate-800);
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
  text-align: center;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate-500);
}

/* ---------- Botón flotante de WhatsApp ---------- */
.whatsapp-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 50;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s, background 0.2s;
}
.whatsapp-fab:hover { background: #20bd5a; transform: scale(1.1); }
.whatsapp-fab svg { width: 28px; height: 28px; fill: var(--white); }

/* ============================================================
   Responsive
   ============================================================ */

@media (min-width: 640px) {
  .hero-buttons { flex-direction: row; }
  .form-row { grid-template-columns: 1fr 1fr; }
  .guarantees { grid-template-columns: 1fr 1fr; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .section-head-split {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.2fr; }
}

@media (min-width: 1024px) {
  .nav-desktop { display: flex; }
  .header-actions { display: flex; }
  .menu-toggle { display: none; }
  .nav-mobile { display: none !important; }

  .hero { padding: 5rem 0 6rem; }
  .hero-grid { grid-template-columns: 7fr 5fr; }

  .cards-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 5fr 7fr; }
  .contact-grid { grid-template-columns: 7fr 5fr; }
}