/* ==========================================================================
   Drive U — Soluciones de software
   Brand tokens: Sapphire palette + Familjen Grotesk / Arimo
   ========================================================================== */

:root {
  --color-primary: #013CB0;      /* Sapphire blue */
  --color-primary-dark: #012a7d;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F2F5FA;
  --color-bg-accent: #ccd8ef;
  --color-text: #000000;
  --color-text-muted: #4a5568;
  --color-on-primary: #FFFFFF;

  --font-heading: "Familjen Grotesk", sans-serif;
  --font-body: "Arimo", sans-serif;

  --max-width: 1120px;
  --radius: 10px;
  --transition: 0.2s ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { padding: 0; margin: 0; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 600; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1em; color: var(--color-text); }
.text-muted { color: var(--color-text-muted); }

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

.section { padding: 72px 0; }
.section--soft { background: var(--color-bg-soft); }
.section--primary { background: var(--color-primary); color: var(--color-on-primary); }
.section--primary h1, .section--primary h2, .section--primary p { color: var(--color-on-primary); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 2px; }

.btn--primary { background: var(--color-on-primary); color: var(--color-primary); }
.btn--primary:hover { background: var(--color-bg-accent); }

.btn--outline { border-color: var(--color-on-primary); color: var(--color-on-primary); background: transparent; }
.btn--outline:hover { background: rgba(255,255,255,0.12); }

.btn--solid { background: var(--color-primary); color: var(--color-on-primary); }
.btn--solid:hover { background: var(--color-primary-dark); }

.btn-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 28px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-bg-accent);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}
.brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-primary);
}
.brand span {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 32px;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 6px;
  right: 6px;
  height: 2px;
  background: var(--color-primary);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle span:nth-child(1) { top: 8px; }
.nav-toggle span:nth-child(2) { top: 16px; }
.nav-toggle span:nth-child(3) { top: 24px; }

.main-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
}
.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-bg-accent);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .main-nav.is-open { max-height: 420px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 8px 24px 20px; }
  .main-nav a { display: block; padding: 12px 0; }
}

/* ---------- Hero ---------- */
.hero { padding: 96px 0 80px; }
.hero .tagline {
  display: inline-block;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-bg-soft);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  margin-bottom: 22px;
}
.hero h1 { max-width: 720px; }
.hero p.lead { max-width: 640px; font-size: 1.1rem; color: var(--color-text-muted); }

/* ---------- Cards ---------- */
.grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-bg-accent);
  border-radius: var(--radius);
  padding: 32px;
  height: 100%;
}
.card h3 { color: var(--color-primary); margin-bottom: 12px; }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
}
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; }
}

.price-card {
  border: 1px solid var(--color-bg-accent);
  border-radius: var(--radius);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  position: relative;
}
.price-card--featured {
  border-color: var(--color-primary);
  box-shadow: 0 12px 28px rgba(1, 60, 176, 0.14);
}
.price-card__badge {
  position: absolute;
  top: -13px;
  left: 28px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.price-card__tier {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.price-card__price {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 18px;
}
.price-card__price span { font-size: 0.95rem; font-weight: 400; color: var(--color-text-muted); }
.price-card__maintenance {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: -8px 0 18px;
  font-style: italic;
}
.price-card ul { margin: 0 0 28px; flex-grow: 1; }
.price-card li {
  list-style: none;
  padding: 9px 0 9px 26px;
  border-top: 1px solid var(--color-bg-soft);
  position: relative;
  font-size: 0.95rem;
}
.price-card li:first-child { border-top: none; }
.price-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.maintenance-note {
  text-align: center;
  margin-top: 36px;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.95rem;
}

/* ---------- Examples list (Desarrollo a la medida) ---------- */
.examples-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 12px;
}
.example-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--color-bg-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.example-item .dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 36px;
}
.contact-item {
  background: var(--color-bg);
  border: 1px solid var(--color-bg-accent);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-item .label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.contact-item a { font-weight: 600; word-break: break-word; }
.contact-item a:hover { color: var(--color-primary); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 40px 0;
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}
.site-footer a:hover { text-decoration: underline; }
.site-footer .copy { font-size: 0.85rem; opacity: 0.85; }

/* ---------- Portfolio ---------- */
.portfolio-category {
  margin-top: 56px;
}
.portfolio-category:first-of-type { margin-top: 0; }
.portfolio-category h2 {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
}
.portfolio-category h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-bg-accent);
}

.portfolio-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
  padding: 32px 0;
  border-top: 1px solid var(--color-bg-soft);
}
.portfolio-category .portfolio-item:first-of-type,
.portfolio-item:first-of-type { border-top: none; }
@media (max-width: 820px) {
  .portfolio-item { grid-template-columns: 1fr; gap: 22px; }
}

.portfolio-item__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-bg-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.portfolio-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.photo-placeholder {
  aspect-ratio: 4 / 3;
  border: 1.5px dashed var(--color-bg-accent);
  border-radius: var(--radius);
  background: var(--color-bg-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  gap: 6px;
  text-align: center;
  padding: 8px;
}
.photo-placeholder svg { width: 26px; height: 26px; opacity: 0.6; }

.portfolio-images img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-bg-accent);
  cursor: zoom-in;
  transition: opacity var(--transition);
}
.portfolio-images img:hover { opacity: 0.85; }

/* ---------- Lightbox ---------- */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 32px;
}
.lightbox-overlay.is-open { display: flex; }
.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 6px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 28px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 10px;
}
.lightbox-close:hover { opacity: 0.7; }

/* ---------- WhatsApp floating button ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  z-index: 900;
  transition: transform var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; fill: #fff; }

@media (max-width: 600px) {
  .whatsapp-float { bottom: 16px; right: 16px; width: 52px; height: 52px; }
  .whatsapp-float svg { width: 26px; height: 26px; }
}

/* ---------- Utilities ---------- */
.eyebrow {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 10px;
  display: block;
}
.center { text-align: center; }
.intro { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.intro.left { margin: 0 0 48px; text-align: left; }