/* =========================================================================
   ADISS Sistemas IT — it.adiss.es
   Sistema de diseño · Dirección "NOC técnico" (hero oscuro + acento cian)
   Sitio estático, sin build. Edita variables aquí para reajustar la marca.
   ========================================================================= */

/* ----- Tokens de marca ----- */
:root {
  /* Superficies oscuras (cabecera, hero, footer) */
  --bg:        #0B1220;
  --bg-2:      #131D33;  /* tarjetas sobre fondo oscuro */
  --bg-3:      #070D1A;  /* franja inferior del footer */
  --line-d:    #24304A;  /* bordes sobre oscuro */

  /* Superficies claras (contenido) */
  --surface:   #FFFFFF;
  --surface-2: #F6F9FC;  /* secciones alternas */
  --line:      #E6EBF2;  /* bordes sobre claro */

  /* Texto */
  --ink:       #0F172A;  /* texto principal sobre claro */
  --ink-2:     #475569;  /* texto secundario */
  --ink-3:     #64748B;  /* pistas / leyendas */
  --on-dark:   #E2E8F0;  /* texto sobre oscuro */
  --on-dark-2: #94A3B8;  /* texto secundario sobre oscuro */

  /* Acento */
  --cyan:      #22B8CF;
  --cyan-600:  #0E7490;  /* iconos sobre claro */
  --cyan-700:  #0B5563;
  --cyan-ink:  #052731;  /* texto sobre relleno cian */
  --cyan-tint: #D7F6FB;  /* chip de icono sobre claro */

  /* Semánticos */
  --ok:        #16A34A;
  --ok-bg:     #DCFCE7;
  --warn:      #B45309;

  /* Forma y medidas */
  --radius:    10px;
  --radius-lg: 14px;
  --pill:      999px;
  --maxw:      1120px;

  /* Tipografía */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;
}

/* ----- Reset base ----- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }
h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.1rem); }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.25rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; }

/* ----- Accesibilidad ----- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 200;
  background: var(--cyan); color: var(--cyan-ink);
  padding: 10px 16px; border-radius: var(--radius); font-weight: 600;
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; border-radius: 4px; }

/* ----- Layout ----- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(48px, 6vw, 88px) 0; }
.section--alt  { background: var(--surface-2); }
.section--dark { background: var(--bg); color: var(--on-dark); }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--tight { padding: clamp(32px, 4vw, 56px) 0; }

.section-head { max-width: 720px; margin: 0 0 2.5rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .lead { font-size: 1.15rem; color: var(--ink-2); margin: 0; }
.section--dark .section-head .lead { color: var(--on-dark-2); }

.eyebrow {
  display: inline-block; font-family: var(--mono);
  font-size: .8rem; font-weight: 600; letter-spacing: .12em;
  text-transform: uppercase; color: var(--cyan-600); margin: 0 0 .9rem;
}
.section--dark .eyebrow { color: var(--cyan); }

.muted { color: var(--ink-2); }
.mono  { font-family: var(--mono); }
.text-center { text-align: center; }

/* ----- Botones ----- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font: inherit; font-weight: 600; font-size: .98rem;
  padding: 13px 22px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
  transition: transform .06s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--cyan); color: var(--cyan-ink); }
.btn--primary:hover { background: #3CC8DC; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink-3); }
.btn--ghost-dark { background: transparent; color: var(--on-dark); border-color: var(--line-d); }
.btn--ghost-dark:hover { border-color: var(--cyan); color: #fff; }
.btn--lg { padding: 15px 28px; font-size: 1.05rem; }
.btn--block { width: 100%; justify-content: center; }
.btn .ti { font-size: 1.1em; }

.link-arrow { color: var(--cyan-600); font-weight: 600; display: inline-flex; align-items: center; gap: .35em; }
.section--dark .link-arrow { color: var(--cyan); }
.link-arrow:hover { gap: .6em; }

/* ----- Cabecera / navegación ----- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 18, 32, .82);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line-d);
  color: var(--on-dark);
}
.site-header.is-scrolled { background: rgba(11, 18, 32, .96); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; color: #fff; letter-spacing: -.01em; }
.brand__mark { width: 30px; height: 30px; flex: 0 0 auto; }
.brand__accent { color: var(--cyan); }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a { color: var(--on-dark); font-size: .98rem; font-weight: 500; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--cyan); }
.nav__actions { display: flex; align-items: center; gap: 16px; }
.nav__phone { color: var(--on-dark-2); font-size: .92rem; display: inline-flex; align-items: center; gap: .4em; }
.nav__phone:hover { color: #fff; }
.nav__toggle {
  display: none; background: transparent; border: 1px solid var(--line-d);
  color: #fff; width: 42px; height: 42px; border-radius: var(--radius);
  font-size: 1.4rem; cursor: pointer; align-items: center; justify-content: center;
}

/* ----- Hero (home) ----- */
.hero {
  position: relative; background: var(--bg); color: var(--on-dark);
  overflow: hidden; padding: clamp(48px, 6vw, 96px) 0 clamp(56px, 7vw, 104px);
}
.hero::before {  /* rejilla técnica muy sutil */
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(var(--line-d) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-d) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 35%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 70% 0%, #000 35%, transparent 78%);
}
.hero .container { position: relative; z-index: 1; }
.hero__grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero h1 { color: #fff; margin-bottom: .65rem; }
.hero__sub { font-size: 1.2rem; color: var(--on-dark-2); max-width: 36ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2rem; }
.hero__contact { margin-top: 1.6rem; color: var(--on-dark-2); font-size: .95rem; display: flex; gap: 1.4rem; flex-wrap: wrap; }
.hero__contact a { color: var(--on-dark-2); display: inline-flex; gap: .45em; align-items: center; }
.hero__contact a:hover { color: var(--cyan); }

/* Tarjeta "estado del servicio" del hero */
.status-card { background: var(--bg-2); border: 1px solid var(--line-d); border-radius: var(--radius-lg); padding: 22px; }
.status-card__label { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; color: var(--cyan); text-transform: uppercase; margin-bottom: .6rem; }
.status-card__big { display: flex; align-items: baseline; gap: 10px; margin-bottom: 1rem; }
.status-card__big b { font-family: var(--mono); font-size: 2.2rem; color: #fff; font-weight: 700; }
.status-card__big span { color: var(--on-dark-2); font-size: .9rem; }
.status-row { display: flex; align-items: center; justify-content: space-between; font-size: .92rem; color: var(--on-dark); padding: 9px 0; border-top: 1px solid var(--line-d); }
.status-row b { font-family: var(--mono); color: var(--cyan); font-weight: 600; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 6px; vertical-align: 1px; }

/* ----- Hero interior (resto de páginas) ----- */
.page-hero { background: var(--bg); color: var(--on-dark); padding: clamp(40px, 5vw, 72px) 0 clamp(36px, 4vw, 56px); position: relative; }
.page-hero h1 { color: #fff; }
.page-hero p { color: var(--on-dark-2); font-size: 1.15rem; max-width: 60ch; margin: 0; }
.breadcrumb { font-size: .85rem; color: var(--on-dark-2); margin-bottom: 1rem; display: flex; gap: .5em; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--cyan); }

/* ----- Rejillas y tarjetas ----- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; height: 100%; }
.section--alt .card { background: #fff; }
.card__icon {
  width: 44px; height: 44px; border-radius: var(--radius);
  background: var(--cyan-tint); color: var(--cyan-600);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 14px;
}
.card h3 { margin-bottom: .4rem; font-size: 1.12rem; }
.card p { color: var(--ink-2); margin: 0; font-size: .98rem; }
.card--link { transition: border-color .15s ease, transform .15s ease; }
.card--link:hover { border-color: var(--cyan); transform: translateY(-2px); }
.card__more { margin-top: 14px; }

/* Lista de "qué incluye" con check */
.checklist { display: grid; gap: 12px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink-2); }
.checklist .ti { color: var(--cyan-600); font-size: 1.25rem; flex: 0 0 auto; margin-top: 1px; }
.checklist b { color: var(--ink); font-weight: 600; }

/* Pasos / proceso */
.steps { counter-reset: step; display: grid; gap: 20px; }
.step { position: relative; padding-left: 56px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 38px; height: 38px;
  border-radius: var(--radius); background: var(--bg-2); color: var(--cyan);
  border: 1px solid var(--line-d); font-family: var(--mono); font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.section--dark .step h3 { color: #fff; }
.step p { color: var(--ink-2); margin: 0; }
.section--dark .step p { color: var(--on-dark-2); }

/* Métricas */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat b { display: block; font-family: var(--mono); font-size: 2.1rem; color: #fff; font-weight: 700; line-height: 1; }
.stat span { color: var(--on-dark-2); font-size: .92rem; }

/* Franja de confianza */
.trust { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px 34px; }
.trust span { color: var(--on-dark-2); font-weight: 600; font-size: .98rem; letter-spacing: .01em; }
.trust .sep { color: var(--line-d); }

/* Banda CTA */
.cta-band { background: var(--cyan); color: var(--cyan-ink); border-radius: var(--radius-lg); padding: clamp(32px, 4vw, 52px); text-align: center; }
.cta-band h2 { color: var(--cyan-ink); }
.cta-band p { color: #053842; opacity: .85; max-width: 52ch; margin: 0 auto 1.6rem; }
.cta-band .btn--dark { background: var(--bg); color: #fff; }
.cta-band .btn--dark:hover { background: #16223b; }

/* ----- Formularios ----- */
.form { display: grid; gap: 18px; }
.form__row { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: .92rem; color: var(--ink); }
.field .req { color: var(--cyan-600); }
.input, .textarea, select.input {
  font: inherit; width: 100%; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; color: var(--ink); transition: border-color .15s ease, box-shadow .15s ease;
}
.input:focus, .textarea:focus, select.input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(34,184,207,.18); outline: none; }
.textarea { min-height: 130px; resize: vertical; }
.form__note { font-size: .85rem; color: var(--ink-3); }
.form__note a { color: var(--cyan-600); text-decoration: underline; }
.form-status { padding: 14px 16px; border-radius: var(--radius); font-size: .95rem; display: none; }
.form-status.ok    { display: block; background: var(--ok-bg); color: #14532D; border: 1px solid #86EFAC; }
.form-status.error { display: block; background: #FEE2E2; color: #991B1B; border: 1px solid #FCA5A5; }

/* Tarjeta de contacto lateral */
.contact-card { background: var(--bg); color: var(--on-dark); border-radius: var(--radius-lg); padding: 28px; }
.contact-card h3 { color: #fff; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-top: 1px solid var(--line-d); }
.contact-item:first-of-type { border-top: 0; }
.contact-item .ti { color: var(--cyan); font-size: 1.3rem; margin-top: 2px; }
.contact-item .k { font-size: .8rem; color: var(--on-dark-2); text-transform: uppercase; letter-spacing: .06em; }
.contact-item .v { color: #fff; }
.contact-item a.v:hover { color: var(--cyan); }

/* ----- Prosa (páginas legales) ----- */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2.2rem; font-size: 1.5rem; }
.prose h3 { margin-top: 1.6rem; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul { list-style: disc; padding-left: 1.3rem; display: grid; gap: .4rem; margin: 0 0 1rem; }
.prose a { color: var(--cyan-600); text-decoration: underline; }
.prose table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .95rem; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border: 1px solid var(--line); }
.prose th { background: var(--surface-2); }

/* ----- Pie ----- */
.site-footer { background: var(--bg); color: var(--on-dark-2); padding: 56px 0 0; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 40px; }
.footer__brand .brand { margin-bottom: 14px; }
.footer__brand p { font-size: .95rem; max-width: 30ch; }
.footer__col h4 { color: #fff; font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 600; margin-bottom: 14px; }
.footer__col li { margin-bottom: 9px; }
.footer__col a:hover { color: var(--cyan); }
.footer__bottom { border-top: 1px solid var(--line-d); padding: 20px 0; display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; font-size: .85rem; }
.footer__bottom .legal-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer__bottom a:hover { color: var(--cyan); }

/* ----- Responsive ----- */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 32px; }
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav__links, .nav__phone { display: none; }
  .nav__toggle { display: inline-flex; }
  .site-header.nav-open .nav__links {
    display: flex; position: absolute; left: 0; right: 0; top: 68px;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: var(--bg); border-bottom: 1px solid var(--line-d);
    padding: 12px 24px 20px;
  }
  .site-header.nav-open .nav__links a { padding: 10px 0; width: 100%; }
  .form__row { grid-template-columns: 1fr; }
  .grid--2 { grid-template-columns: 1fr; }
  .layout-2col { grid-template-columns: 1fr !important; }
}
@media (max-width: 480px) {
  .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; justify-content: center; }
}

/* 2 columnas genérico (servicio: contenido + aside) */
.layout-2col { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
.aside-sticky { position: sticky; top: 88px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}