/* ==========================================================================
   Ckelar Software - Hoja de estilos
   Para cambiar colores o tipografías, edita las variables de :root.
   ========================================================================== */

/* ---------- Variables ---------- */
:root {
  /* Colores de marca (tomados del logo) */
  --color-primary: #002255;       /* azul corporativo */
  --color-primary-dark: #001636;
  --color-accent: #806600;        /* dorado corporativo */
  --color-accent-light: #c9a62b;  /* dorado claro, para fondos oscuros */

  /* Neutros */
  --color-text: #2b3445;
  --color-muted: #5f6b80;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6fa;
  --color-border: #e1e6ee;

  /* Tipografía */
  --font-heading: "Raleway", system-ui, sans-serif;
  --font-body: "Open Sans", system-ui, sans-serif;

  /* Medidas */
  --container: 1080px;
  --header-height: 72px;
  --radius: 14px;
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 700; }

p { margin: 0 0 1em; }

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

/* ---------- Componentes reutilizables ---------- */
.eyebrow {
  margin-bottom: 0.8rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow--light { color: var(--color-accent-light); }

.btn {
  display: inline-block;
  padding: 0.85rem 1.8rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: 999px;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}

.btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--small { padding: 0.5rem 1.2rem; font-size: 0.9rem; }

.btn--ghost {
  color: var(--color-primary);
  background: transparent;
}

.btn--ghost:hover {
  color: #fff;
  background: var(--color-primary);
}

.btn--light {
  color: var(--color-primary);
  background: #fff;
  border-color: #fff;
}

.btn--light:hover {
  color: var(--color-primary);
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
}

/* ---------- Cabecera ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  transition: box-shadow 0.25s;
}

.header.is-scrolled { box-shadow: 0 2px 18px rgba(0, 34, 85, 0.1); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo img { width: auto; height: 44px; }

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-primary);
}

.nav a:not(.btn):hover { color: var(--color-accent); }

.nav .btn { color: #fff; }

/* Botón hamburguesa (solo móvil) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Inicio (hero) ---------- */
.hero {
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding: calc(var(--header-height) + 3rem) 0 4rem;
  background:
    radial-gradient(circle at 85% 15%, rgba(128, 102, 0, 0.1), transparent 40%),
    radial-gradient(circle at 10% 90%, rgba(0, 34, 85, 0.08), transparent 45%),
    var(--color-bg);
}

.hero .accent { color: var(--color-accent); }

.hero__lead {
  max-width: 560px;
  margin-bottom: 2rem;
  font-size: 1.15rem;
  color: var(--color-muted);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ---------- Secciones ---------- */
.section { padding: 6rem 0; }
.section--alt { background: var(--color-bg-alt); }
.section__head { margin-bottom: 3rem; }

/* Nosotros */
.about {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: start;
}

.about__values { display: grid; gap: 1.8rem; }

.value {
  padding-left: 1.4rem;
  border-left: 3px solid var(--color-accent);
}

.value p { margin: 0; color: var(--color-muted); }

/* Servicios */
.grid { display: grid; gap: 1.5rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  padding: 2rem 1.6rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0, 34, 85, 0.1);
}

.card p { margin: 0; color: var(--color-muted); font-size: 0.95rem; }

.card__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 1.2rem;
  color: #fff;
  background: var(--color-primary);
  border-radius: 12px;
}

.card__icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Clientes */
.clients { text-align: center; }

.clients__title {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.clients__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem 3.5rem;
}

.clients__list img {
  width: auto;
  height: 52px;
  max-width: 180px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.7;
  transition: filter 0.25s, opacity 0.25s;
}

.clients__list a:hover img,
.clients__list li:hover img {
  filter: none;
  opacity: 1;
}

/* Contacto */
.contact {
  color: #fff;
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.contact h2 { color: #fff; }
.contact__lead { color: rgba(255, 255, 255, 0.8); }
.contact__hours { margin: 1.5rem 0 0; font-size: 0.95rem; color: rgba(255, 255, 255, 0.65); }

/* ---------- Pie ---------- */
.footer {
  padding: 1.6rem 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  background: var(--color-primary-dark);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 2rem;
}

.footer p { margin: 0; }
.social { display: flex; gap: 1.5rem; }
.social a:hover { color: var(--color-accent-light); }

/* ---------- Animación de aparición al hacer scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .about { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 720px) {
  .section { padding: 4.5rem 0; }

  .nav-toggle { display: flex; }

  .nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 1.2rem;
    padding: 1.5rem;
    background: #fff;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 12px 20px rgba(0, 34, 85, 0.1);
    transform: translateY(-120%);
    visibility: hidden;
    transition: transform 0.3s, visibility 0.3s;
  }

  .nav.is-open { transform: none; visibility: visible; }

  .grid--4 { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; text-align: center; }
}