/* ===== Variables ===== */
:root {
  --blue: #1f6fd1;
  --blue-light: #4aa3f0;
  --navy: #10264a;
  --text: #4b5873;
  --soft: #f4f8fd;
  --border: #e3ebf6;
  --white: #ffffff;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(16, 38, 74, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  background: var(--white);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

h1, h2, h3, h4 { color: var(--navy); line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 700; margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: .6rem; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* ===== Botones ===== */
.btn {
  display: inline-block;
  padding: .9rem 1.6rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s;
}
.btn--primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  color: var(--white);
  box-shadow: 0 8px 20px rgba(31, 111, 209, .25);
}
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(31, 111, 209, .35); }
.btn--ghost { border-color: var(--border); color: var(--navy); }
.btn--ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn--sm { padding: .6rem 1.2rem; font-size: .9rem; }
.btn--full { width: 100%; }

.tag {
  display: inline-block;
  padding: .35rem .9rem;
  border-radius: 50px;
  background: rgba(31, 111, 209, .08);
  color: var(--blue);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* ===== Encabezado ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(10px);
  transition: box-shadow .3s;
}
.header.scrolled { box-shadow: 0 4px 20px rgba(16, 38, 74, .06); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo img { height: 56px; width: auto; }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav__link { font-weight: 500; color: var(--navy); position: relative; }
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--blue);
  transition: width .3s;
}
.nav__link:hover::after { width: 100%; }

.menu-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.menu-toggle span {
  display: block; width: 24px; height: 2px; margin: 5px 0;
  background: var(--navy); border-radius: 2px; transition: .3s;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Bienvenida ===== */
.hero { position: relative; padding: 150px 0 80px; overflow: hidden; }
.hero__bg {
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(74, 163, 240, .15), transparent 70%);
  z-index: -1;
}
.hero__inner { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 3rem; }
.hero__text p { font-size: 1.1rem; margin: 1.2rem 0 2rem; max-width: 520px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.highlight {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__visual { display: flex; justify-content: center; }
.hero__circle {
  width: min(380px, 80vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--white);
  box-shadow: var(--shadow), 0 0 0 18px var(--soft), 0 0 0 36px rgba(244, 248, 253, .5);
  display: flex; align-items: center; justify-content: center;
  padding: 2.5rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 5rem;
}
.stat {
  text-align: center;
  padding: 1.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.stat strong, .stat span { font-size: 2.4rem; font-weight: 800; color: var(--blue); }
.stat p { font-weight: 500; }

/* ===== Secciones ===== */
.section { padding: 100px 0; }
.section--soft { background: var(--soft); }
.section__head { text-align: center; max-width: 600px; margin: 0 auto 3.5rem; }

/* Nosotros */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about__text p + p { margin-top: 1rem; }
.about__list { list-style: none; display: grid; gap: 1.2rem; }
.about__list li {
  display: flex; gap: 1rem;
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.about__list li:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: transparent; }
.about__list h4 { margin-bottom: .2rem; }
.icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  color: var(--white);
  font-weight: 700;
}

/* Misión / visión / valores */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.card {
  background: var(--white);
  padding: 2.2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s;
}
.card:hover { transform: translateY(-8px); }
.card__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--soft);
  display: grid; place-items: center;
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
}
.values { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; }
.values li {
  padding: .3rem .8rem;
  border-radius: 50px;
  background: var(--soft);
  color: var(--blue);
  font-size: .85rem;
  font-weight: 600;
}

/* Servicios */
.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.service {
  padding: 2rem 1.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
  transition: border-color .3s, transform .3s;
}
.service::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s;
}
.service:hover { border-color: transparent; transform: translateY(-6px); box-shadow: var(--shadow); }
.service:hover::before { transform: scaleX(1); }
.service__num { display: block; font-size: 2rem; font-weight: 800; color: rgba(31, 111, 209, .2); margin-bottom: .8rem; }

/* Contacto */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: start; }
.contact__list { list-style: none; margin-top: 2rem; display: grid; gap: 1rem; }
.contact__list li { display: flex; align-items: center; gap: .8rem; font-weight: 500; color: var(--navy); }
.contact__list span {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow);
  display: grid; place-items: center;
}

.form {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { margin-bottom: 1.2rem; }
.field label { display: block; font-size: .9rem; font-weight: 600; color: var(--navy); margin-bottom: .4rem; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: .85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: .95rem;
  color: var(--navy);
  background: var(--white);
  transition: border-color .25s, box-shadow .25s;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(31, 111, 209, .1);
}
.field textarea { resize: vertical; }
.field .error, .field .error:focus { border-color: #e04b4b; }
.form__msg { margin-top: 1rem; text-align: center; font-weight: 600; min-height: 1.5em; }
.form__msg.ok { color: #1a9a5c; }
.form__msg.err { color: #e04b4b; }

/* Pie de página */
.footer { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer__logo { height: 48px; width: auto; }
.footer p { font-size: .9rem; }

/* ===== Animaciones ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.fade-up { opacity: 0; animation: fadeUp .8s ease forwards; }
.fade-in { opacity: 0; animation: fadeIn 1s ease forwards; }
.delay-1 { animation-delay: .15s; }
.delay-2 { animation-delay: .3s; }
.delay-3 { animation-delay: .45s; }
.float { animation: float 5s ease-in-out infinite; }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .fade-up, .fade-in, .reveal { opacity: 1; transform: none; }
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .about, .contact { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav {
    position: fixed;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    gap: 1.4rem;
    padding: 2rem 20px;
    background: var(--white);
    box-shadow: 0 10px 20px rgba(16, 38, 74, .08);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .35s ease, opacity .35s ease;
    z-index: -1;
  }
  .nav.open { transform: translateY(0); opacity: 1; }

  .hero { padding-top: 120px; text-align: center; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__text p { margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { order: -1; }
  .hero__circle { width: min(260px, 70vw); padding: 1.8rem; }
  .stats { grid-template-columns: 1fr; margin-top: 3rem; }
  .section { padding: 70px 0; }
}

@media (max-width: 560px) {
  .services { grid-template-columns: 1fr; }
  .form { padding: 1.6rem; }
  .form__row { grid-template-columns: 1fr; gap: 0; }
  .footer__inner { flex-direction: column; text-align: center; }
  .logo img { height: 46px; }
}