/* ============================================================
   app.css — Componentes del sitio.
   FASE 1: toggle de tema.  FASE 2: navbar + footer.
   El resto (hero, servicios…) llega desde la FASE 3.
   ============================================================ */

/* ── Toggle de tema (Fase 1) ────────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  color: var(--c-heading);
  background: transparent;
  border: var(--border-thin);
  border-radius: var(--radius-btn);
  cursor: pointer;
}
.theme-toggle:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}
.theme-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
}
@media (prefers-reduced-motion: no-preference) {
  .theme-toggle { transition: color 0.2s ease, border-color 0.2s ease; }
}

/* Icono según el tema activo:
   oscuro → sol (acción: ir a claro) · claro → luna (acción: ir a oscuro) */
.theme-toggle .icon-moon { display: none; }
[data-bs-theme="light"] .theme-toggle .icon-sun  { display: none; }
[data-bs-theme="light"] .theme-toggle .icon-moon { display: inline-block; }

/* ── Navbar (Fase 2) ────────────────────────────────────────── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: var(--c-bg);
  border-bottom: var(--border-thin);
  /* Variables de navbar de Bootstrap mapeadas a tokens */
  --bs-navbar-color: var(--c-text);
  --bs-navbar-hover-color: var(--c-brand);
  --bs-navbar-active-color: var(--c-brand);
}
.site-nav .navbar-brand {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--c-heading);
}

.site-nav .nav-link {
  font-family: var(--font-body);
  font-size: 0.98rem;
  color: var(--c-text);
}
.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible { color: var(--c-brand); }

.site-nav .navbar-toggler {
  color: var(--c-text);
  border: 0;
}
.site-nav .navbar-toggler:focus { box-shadow: none; }

@media (min-width: 992px) {
  .site-nav .nav-link { padding-left: 0.9rem; padding-right: 0.9rem; }
}

/* ── Botón CTA naranja ──────────────────────────────────────── */
.btn-contacto {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--c-on-accent);
  background-color: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: var(--radius-btn);
  padding: 0.5rem 1.15rem;
  text-decoration: none;
  white-space: nowrap;
}
.btn-contacto:hover,
.btn-contacto:focus-visible {
  color: var(--c-on-accent);
  filter: brightness(0.93);
}
@media (max-width: 991.98px) {
  /* en mobile el CTA queda dentro del menú desplegado */
  .site-nav .btn-contacto { margin-top: 0.25rem; }
}

/* ── Footer (Fase 2) — isla oscura fija (data-bs-theme="dark") ─ */
.site-footer {
  background-color: var(--c-bg);          /* = #0D1B2A en dark */
  color: rgba(255, 255, 255, 0.6);
  border-top: var(--border-thin);
  padding-top: var(--section-py-sm);
  padding-bottom: 2rem;
}
.site-footer .footer-logo {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--c-heading);
  text-decoration: none;
}
.site-footer .footer-tagline {
  margin-top: 0.85rem;
  max-width: 32ch;
  color: rgba(255, 255, 255, 0.6);
}
.site-footer .footer-copy {
  margin-top: 1.25rem;
  margin-bottom: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}
.site-footer .footer-title {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 1rem;
}
.site-footer .footer-links { margin: 0; }
.site-footer .footer-links li { margin-bottom: 0.55rem; }
.site-footer .footer-links a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
}
.site-footer .footer-links a:hover,
.site-footer .footer-links a:focus-visible {
  color: var(--c-heading);
  text-decoration: underline;
}

/* ── Botones del hero (Fase 3) ──────────────────────────────── */
.btn-primario,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 500;
  border-radius: var(--radius-btn);
  padding: 0.7rem 1.4rem;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primario {
  color: var(--c-on-brand);
  background-color: var(--c-brand);
  border: 1px solid var(--c-brand);
}
.btn-primario:hover,
.btn-primario:focus-visible {
  color: var(--c-on-brand);
  filter: brightness(1.06);
}
.btn-ghost {
  color: var(--c-text);
  background: transparent;
  border: 1px solid currentColor;
}
.btn-ghost:hover,
.btn-ghost:focus-visible { color: var(--c-brand); }

/* ── Hero (Fase 3) ──────────────────────────────────────────── */
.hero-content {
  border-left: var(--bar-accent) solid var(--c-accent);
  padding-left: 1.75rem;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--c-accent-text);
  margin-bottom: 1.25rem;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 1.25rem;
}
.hero-sub {
  max-width: 52ch;
  font-size: 1.1rem;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Métricas: divisor vertical en desktop, apiladas con divisor fino */
.hero-metrics { margin: 0; }
@media (min-width: 992px) {
  .hero-metrics {
    border-left: var(--border-thin);
    padding-left: 2.5rem;
  }
}
.hero-metric { padding: 1.1rem 0; }
.hero-metric + .hero-metric { border-top: var(--border-thin); }
.metric-num {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  line-height: 1;
  color: var(--c-heading);
}
.metric-label {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  color: var(--c-text);
}

/* ── Encabezado de sección (reutilizable) ───────────────────── */
.section-head {
  max-width: 56ch;
  margin-bottom: 3rem;
}
.section-eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--c-accent-text);
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin: 0;
}

/* ── Pills de tecnología (reutilizable) ─────────────────────── */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
}
.pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.8rem;
  color: var(--c-text);
  border: var(--border-thin);
  border-radius: var(--radius-pill);   /* 100px */
}

/* ── Servicios (Fase 4) ─────────────────────────────────────── */
.services { background-color: var(--c-bg-alt); }
.service-card {
  position: relative;
  height: 100%;
  padding: 2rem 1.75rem;
  background-color: var(--c-bg);
  border: var(--border-thin);
  border-radius: var(--radius-card);    /* 0 — cards sin radio */
  overflow: hidden;
}
.service-num {
  position: absolute;
  top: -0.5rem;
  right: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 6rem;
  line-height: 1;
  color: var(--c-heading);
  opacity: 0.06;                        /* número decorativo muy claro detrás */
  pointer-events: none;
}
.service-body { position: relative; }   /* por encima del número decorativo */
.service-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  color: var(--c-heading);
}
.service-desc {
  margin-bottom: 1.25rem;
  color: var(--c-text);
}

/* ── Stack (Fase 5) — bloque invertido (data-bs-theme="dark") ── */
.stack { background-color: var(--c-bg); }    /* = #0D1B2A en dark */
.stack-head { margin-bottom: 2.5rem; }
.stack-title-label {
  margin: 0;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  /* el plan pedía blanco 35% (3.20:1, falla AA en un h2) → 0.7 (≈9:1) */
  color: rgba(255, 255, 255, 0.7);
}
.stack-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.5rem 3rem;
}
.stack-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}
.stack-logo {
  height: 48px;
  width: auto;
  filter: grayscale(1);
  opacity: 0.85;
}
.stack-item:hover .stack-logo { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .stack-logo { transition: opacity 0.2s ease; }
}
/* el plan pide borde de pill rgba(255,255,255,0.2) en el stack */
.stack-item .pill { border-color: rgba(255, 255, 255, 0.2); }

/* ── Divisor tipográfico centrado (reutilizable) ────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 3rem;
}
.divider::before,
.divider::after {
  content: "";
  flex: 1;
  border-top: var(--border-thin);
}
.divider-text {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  color: var(--c-text);
  white-space: nowrap;
}

/* ── Proyectos (Fase 6) ─────────────────────────────────────── */
.projects { background-color: var(--c-bg); }
.project-card {
  height: 100%;
  padding: 1.75rem;
  background-color: var(--c-bg);
  border: var(--border-thin);
  border-radius: var(--radius-card);
}
.project-industry {
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--c-accent-text);
}
.project-name {
  margin-bottom: 1rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--c-heading);
}
.project-tech { margin-bottom: 1.25rem; }
.project-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--c-brand);
  text-decoration: none;
}
.project-link:hover,
.project-link:focus-visible { text-decoration: underline; }

/* ── Clientes (Fase 7) — citas tipográficas ─────────────────── */
.clients { background-color: var(--c-bg-alt); }
.clients-list { margin: 0; }
.client-item {
  padding: 1.5rem 0;
  text-align: center;
  border-bottom: var(--border-thin);
}
.client-item:first-child { border-top: var(--border-thin); }
.client-name {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  color: var(--c-heading);
  text-decoration: none;
}
a.client-name:hover,
a.client-name:focus-visible { color: var(--c-brand); }

/* ── APPs propias (Fase 8) — cards horizontales ─────────────── */
.apps { background-color: var(--c-bg); }
.apps-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}
.app-card {
  display: grid;
  grid-template-columns: 1fr 1fr;   /* imagen | texto */
  border: var(--border-thin);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.app-media { background-color: var(--c-bg-alt); }
.app-media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}
.app-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 2.25rem;
}
.app-name {
  margin-bottom: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--c-heading);
}
.app-desc {
  margin-bottom: 1.5rem;
  color: var(--c-text);
}
@media (max-width: 767.98px) {
  .app-card { grid-template-columns: 1fr; }   /* apila en mobile */
  .app-media img { min-height: 180px; }
}

/* ── Contacto (Fase 10) ─────────────────────────────────────── */
.contact { background-color: var(--c-bg-alt); }
.contact-form { max-width: 640px; }
.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.25rem;
}
.form-row label {
  margin-bottom: 0.4rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--c-heading);
}
.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem 0.85rem;
  color: var(--c-text);
  background-color: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-btn);
}
.contact-form textarea { resize: vertical; }
.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-accent);
}
.contact-form [aria-invalid="true"] { border-color: var(--c-accent); }
.field-error {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--c-accent-text);
}
.form-alert {
  max-width: 640px;
  padding: 1rem 1.25rem;
  background-color: var(--c-bg);
  border: var(--border-thin);
}
.form-alert--ok  { border-left: 4px solid var(--c-brand); }
.form-alert--err { border-left: 4px solid var(--c-accent); }
/* Honeypot: fuera de pantalla, sin ocultar a teclado por display:none */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}