/* =========================================================
   David & Sánchez Legal Investment — Asociación Mutual
   Hoja de estilos institucional
   ========================================================= */

:root {
  --azul-primario: #0b3d91;
  --azul-oscuro: #062a66;
  --azul-claro: #2b6cb0;
  --dorado: #c9a227;
  --gris-100: #f5f7fa;
  --gris-200: #e2e8f0;
  --gris-400: #a0aec0;
  --gris-700: #2d3748;
  --texto: #1a202c;
  --blanco: #ffffff;
  --exito: #2f855a;
  --sombra-suave: 0 4px 14px rgba(11, 61, 145, 0.08);
  --sombra-media: 0 8px 24px rgba(11, 61, 145, 0.14);
  --radio: 10px;
  --contenedor: 1200px;
  --transicion: 0.25s ease-in-out;
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  color: var(--texto);
  background: var(--blanco);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: var(--azul-primario); text-decoration: none; transition: color var(--transicion); }
a:hover { color: var(--azul-oscuro); }
h1, h2, h3, h4 { color: var(--azul-oscuro); line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--contenedor);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ============ Barra superior informativa ============ */
.topbar {
  background: var(--azul-oscuro);
  color: var(--blanco);
  font-size: .85rem;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: .5rem;
  padding-bottom: .5rem;
  flex-wrap: wrap;
  gap: .5rem;
}
.topbar a { color: var(--blanco); opacity: .9; }
.topbar a:hover { opacity: 1; text-decoration: underline; }

/* ============ Navbar ============ */
.navbar {
  background: var(--blanco);
  box-shadow: var(--sombra-suave);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--azul-oscuro);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.15;
}
.logo-badge {
  background: linear-gradient(135deg, var(--azul-primario), var(--azul-claro));
  color: var(--blanco);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--sombra-suave);
  overflow: hidden;
  flex-shrink: 0;
}
.logo-badge img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  display: block;
}
.logo small {
  display: block;
  font-weight: 400;
  font-size: .75rem;
  color: var(--gris-700);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}
.nav-links a {
  color: var(--gris-700);
  font-weight: 500;
  padding: .5rem 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--azul-primario);
  border-bottom-color: var(--dorado);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--azul-oscuro);
  cursor: pointer;
}

/* ============ Botones ============ */
.btn {
  display: inline-block;
  padding: .8rem 1.5rem;
  border-radius: var(--radio);
  font-weight: 600;
  letter-spacing: .25px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transicion);
  text-align: center;
}
.btn-primary {
  background: var(--dorado);
  color: var(--azul-oscuro);
  border-color: var(--dorado);
}
.btn-primary:hover {
  background: #b4901f;
  border-color: #b4901f;
  color: var(--blanco);
  transform: translateY(-2px);
  box-shadow: var(--sombra-media);
}
.btn-secondary {
  background: transparent;
  color: var(--blanco);
  border-color: var(--blanco);
}
.btn-secondary:hover {
  background: var(--blanco);
  color: var(--azul-oscuro);
}
.btn-outline {
  background: transparent;
  color: var(--azul-primario);
  border-color: var(--azul-primario);
}
.btn-outline:hover {
  background: var(--azul-primario);
  color: var(--blanco);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(6, 42, 102, 0.92), rgba(43, 108, 176, 0.85)),
    url("https://images.unsplash.com/photo-1523050854058-8df90110c9f1?auto=format&fit=crop&w=1600&q=80") center/cover;
  color: var(--blanco);
  padding: 5rem 0;
}
.hero-content {
  max-width: 760px;
}
.hero h1 { color: var(--blanco); }
.hero p {
  font-size: 1.15rem;
  opacity: .95;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.25);
}
.hero-stats div strong {
  display: block;
  font-size: 2rem;
  color: var(--dorado);
}
.hero-stats div span {
  font-size: .9rem;
  opacity: .9;
}

/* ============ Secciones ============ */
section { padding: 4rem 0; }
.section-alt { background: var(--gris-100); }
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}
.section-header p { color: var(--gris-700); }
.eyebrow {
  display: inline-block;
  color: var(--dorado);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: .8rem;
  font-weight: 700;
  margin-bottom: .5rem;
}

/* ============ Tarjetas de crédito ============ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.card {
  background: var(--blanco);
  border-radius: var(--radio);
  padding: 2rem;
  box-shadow: var(--sombra-suave);
  border-top: 4px solid var(--azul-primario);
  transition: transform var(--transicion), box-shadow var(--transicion);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-media);
}
.card .icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(11, 61, 145, .08);
  color: var(--azul-primario);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--gris-700); flex-grow: 1; }
.card .card-link {
  margin-top: 1rem;
  font-weight: 600;
}

/* ============ Franja de beneficios ============ */
.benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.benefit {
  text-align: center;
  padding: 1.5rem 1rem;
}
.benefit .num {
  font-size: 2.5rem;
  color: var(--dorado);
  font-weight: 800;
}

/* ============ CTA grande ============ */
.cta-band {
  background: linear-gradient(135deg, var(--azul-primario), var(--azul-oscuro));
  color: var(--blanco);
  text-align: center;
  padding: 4rem 1rem;
}
.cta-band h2 { color: var(--blanco); }
.cta-band p { max-width: 640px; margin: 0 auto 2rem; opacity: .95; }

/* ============ Formularios ============ */
.form {
  background: var(--blanco);
  padding: 2rem;
  border-radius: var(--radio);
  box-shadow: var(--sombra-suave);
  display: grid;
  gap: 1rem;
  max-width: 720px;
  margin: 0 auto;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.field label {
  display: block;
  font-weight: 600;
  margin-bottom: .4rem;
  color: var(--gris-700);
  font-size: .9rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .75rem;
  border: 1px solid var(--gris-200);
  border-radius: 8px;
  font: inherit;
  background: var(--blanco);
  transition: border-color var(--transicion), box-shadow var(--transicion);
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--azul-primario);
  box-shadow: 0 0 0 3px rgba(11, 61, 145, .15);
}

/* ============ Simulador ============ */
.simulador-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.resultado {
  background: var(--azul-oscuro);
  color: var(--blanco);
  border-radius: var(--radio);
  padding: 2rem;
}
.resultado h3 { color: var(--dorado); margin-top: 0; }
.resultado .valor {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--blanco);
}
.resultado dl {
  display: grid;
  grid-template-columns: 1fr auto;
  row-gap: .5rem;
  column-gap: 1rem;
  margin: 1.5rem 0 0;
  font-size: .95rem;
}
.resultado dt { opacity: .85; }
.resultado dd { margin: 0; font-weight: 600; }

.tabla-amortizacion {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  font-size: .9rem;
}
.tabla-amortizacion th,
.tabla-amortizacion td {
  padding: .6rem .75rem;
  text-align: right;
  border-bottom: 1px solid var(--gris-200);
}
.tabla-amortizacion th {
  background: var(--gris-100);
  color: var(--azul-oscuro);
  text-align: right;
}
.tabla-amortizacion th:first-child,
.tabla-amortizacion td:first-child { text-align: left; }

/* ============ FAQ ============ */
.faq-item {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra-suave);
  margin-bottom: 1rem;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--azul-oscuro);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--dorado);
  transition: transform var(--transicion);
}
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transicion), padding var(--transicion);
  padding: 0 1.5rem;
  color: var(--gris-700);
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding: 0 1.5rem 1.25rem;
}

/* ============ Tipografía de apoyo ============ */
ul.check {
  list-style: none;
  padding: 0;
}
ul.check li {
  padding: .5rem 0 .5rem 1.75rem;
  position: relative;
}
ul.check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: .4rem;
  color: var(--exito);
  font-weight: 800;
}

/* ============ Footer ============ */
.footer {
  background: var(--azul-oscuro);
  color: var(--blanco);
  padding: 3rem 0 1rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  align-items: stretch;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
  height: 100%;
}
.footer-logo {
  /* ~15% de la altura original del PNG (1172px) preservando aspecto */
  height: 180px;
  width: auto;
  max-width: 100%;
  display: block;
  background: transparent;
}
.footer-brand p {
  margin: 0;
  opacity: .85;
  font-size: .9rem;
}
.footer h4 {
  color: var(--dorado);
  margin-bottom: 1rem;
}
.footer a { color: var(--blanco); opacity: .85; }
.footer a:hover { opacity: 1; color: var(--dorado); }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin-bottom: .5rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15);
  margin-top: 2rem;
  padding-top: 1rem;
  text-align: center;
  font-size: .85rem;
  opacity: .85;
}

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .simulador-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blanco);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0;
    box-shadow: var(--sombra-media);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; border-bottom: 1px solid var(--gris-200); }
  .nav-links li:last-child { border-bottom: none; }
  .nav-links a { display: block; padding: .85rem 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 3.5rem 0; }
}