/* =========================================================
   TSIT — Hoja de estilos principal
   Paleta: Azul marino profundo + acento celeste/teal (tech, IA, confianza)
   ========================================================= */

:root {
  /* Colores base */
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fb;
  --color-bg-dark: #071426;
  --color-bg-darker: #040d1c;
  --color-navy: #10173d;
  --color-navy-light: #1b2464;

  /* Acentos — colores de marca TSIT */
  --color-accent: #1b2464;      /* azul marino — marca TSIT */
  --color-accent-2: #f5901c;    /* naranjo — marca TSIT */
  --color-accent-2-dim: rgba(245, 144, 28, 0.14);
  --color-accent-dim: rgba(27, 36, 100, 0.10);

  /* Texto */
  --color-text: #16213a;
  --color-text-muted: #57647d;
  --color-text-light: #f5f7fb;
  --color-text-light-muted: #aab6cc;

  /* Bordes / sombras */
  --color-border: #e3e8f1;
  --shadow-sm: 0 2px 8px rgba(13, 35, 64, 0.06);
  --shadow-md: 0 8px 24px rgba(13, 35, 64, 0.10);
  --shadow-lg: 0 20px 48px rgba(7, 20, 38, 0.18);

  /* Tipografía */
  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;

  /* Layout */
  --container-max: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-navy);
}

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

.section {
  padding: 96px 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: linear-gradient(160deg, var(--color-bg-dark), var(--color-bg-darker));
  color: var(--color-text-light);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text-light);
}

.section--dark p {
  color: var(--color-text-light-muted);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-accent-2);
  display: inline-block;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  margin-bottom: 16px;
}

.section-head p {
  color: var(--color-text-muted);
  font-size: 17px;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, #f5901c, #d97706);
  color: #fff;
  box-shadow: 0 8px 20px rgba(245, 144, 28, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(245, 144, 28, 0.45);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--color-text-light);
}

.btn--ghost:hover {
  border-color: var(--color-accent-2);
  color: var(--color-accent-2);
}

.btn--outline-dark {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.btn--outline-dark:hover {
  background: var(--color-navy);
  color: #fff;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 14px;
}

/* ---------- Header / Navegación ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7, 20, 38, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 22px;
  color: #fff;
  letter-spacing: 0.02em;
}

.brand__logo-chip {
  display: flex;
  align-items: center;
  background: #ffffff;
  border-radius: 12px;
  padding: 9px 18px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.brand__logo-chip img {
  height: 44px;
  display: block;
}

.brand__full {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__full span {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text-light-muted);
  text-transform: uppercase;
}

/* Logo dentro del footer (mismo tratamiento) */
.footer-brand .brand__logo-chip {
  margin-bottom: 4px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light-muted);
  transition: color 0.2s ease;
  position: relative;
}

.nav__links a:hover,
.nav__links a.active {
  color: #fff;
}

.nav__links a.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent-2);
  border-radius: 2px;
}

.nav__cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.2s ease;
}

/* ---------- Hero ---------- */
.hero {
  padding: 180px 0 120px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(27, 36, 100, 0.45), transparent 45%),
    radial-gradient(circle at 85% 10%, rgba(245, 144, 28, 0.20), transparent 40%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 4.6vw, 54px);
  margin-bottom: 22px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #ffb84d, var(--color-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  font-size: 18px;
  color: var(--color-text-light-muted);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: 36px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero__stat strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 30px;
  color: #fff;
}

.hero__stat span {
  font-size: 13px;
  color: var(--color-text-light-muted);
}

.hero__panel {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(6px);
}

.hero__panel-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__panel-row:last-child {
  border-bottom: none;
}

.hero__panel-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.hero__panel-row:nth-child(1) .hero__panel-icon { background: var(--color-accent-dim); }
.hero__panel-row:nth-child(2) .hero__panel-icon { background: var(--color-accent-2-dim); }
.hero__panel-row:nth-child(3) .hero__panel-icon { background: var(--color-accent-dim); }

.hero__panel-row h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 4px;
}

.hero__panel-row p {
  font-size: 13.5px;
  margin: 0;
  color: var(--color-text-light-muted);
}

/* ---------- Logos de confianza ---------- */
.trust-strip {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
}

.trust-strip p {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

.trust-strip__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px 20px;
  flex-wrap: wrap;
}

.trust-strip__logos span,
.trust-strip__logos a {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14.5px;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
  padding: 10px 18px;
  border-radius: 999px;
  transition: all 0.2s ease;
}

.trust-strip__logos a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

/* ---------- Cards de servicios ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 22px;
}

.card__icon--blue { background: var(--color-accent-dim); }
.card__icon--teal { background: var(--color-accent-2-dim); }
.card__icon--navy { background: rgba(16, 23, 61, 0.08); }

.card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.card p {
  color: var(--color-text-muted);
  font-size: 15px;
  margin-bottom: 18px;
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.card__list li {
  font-size: 14px;
  color: var(--color-text-muted);
  padding-left: 22px;
  position: relative;
}

.card__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent-2);
  font-weight: 700;
}

.card__link {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ---------- CTA banda ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--color-navy), var(--color-bg-dark));
  border-radius: var(--radius-lg);
  padding: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  color: #fff;
}

.cta-band h3 {
  color: #fff;
  font-size: 26px;
  margin-bottom: 8px;
}

.cta-band p {
  color: var(--color-text-light-muted);
  margin: 0;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-darker);
  color: var(--color-text-light-muted);
  padding: 72px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 20px;
}

.footer-grid ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-grid ul a {
  font-size: 14.5px;
  transition: color 0.2s ease;
}

.footer-grid ul a:hover {
  color: var(--color-accent-2);
}

.footer-brand p {
  font-size: 14.5px;
  margin: 18px 0 22px;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.footer-social a:hover {
  background: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a:hover {
  color: var(--color-accent-2);
}

/* ---------- Breadcrumb / page hero (páginas internas) ---------- */
.page-hero {
  padding: 160px 0 80px;
  text-align: center;
}

.page-hero .eyebrow {
  justify-content: center;
}

.page-hero h1 {
  font-size: clamp(30px, 4vw, 46px);
  margin-bottom: 18px;
}

.page-hero p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--color-text-light-muted);
  font-size: 17px;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-light-muted);
  margin-bottom: 24px;
}

.breadcrumb a:hover {
  color: var(--color-accent-2);
}

/* ---------- Utilidades ---------- */
.text-center { text-align: center; }
.mt-lg { margin-top: 48px; }
.mb-lg { margin-bottom: 48px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-row strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 36px;
  color: var(--color-navy);
}

.stat-row span {
  font-size: 14px;
  color: var(--color-text-muted);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline__item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.timeline__item strong {
  font-family: var(--font-heading);
  color: var(--color-accent);
  font-size: 20px;
}

.value-card {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.value-card .card__icon {
  flex-shrink: 0;
  margin-bottom: 0;
}

.value-card h4 {
  font-size: 17px;
  margin-bottom: 6px;
}

.value-card p {
  font-size: 14.5px;
  color: var(--color-text-muted);
  margin: 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  text-align: center;
}

.team-card__photo {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-dim), var(--color-accent-2-dim));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 16px;
}

.team-card h4 {
  font-size: 16px;
  margin-bottom: 2px;
}

.team-card span {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Servicios: bloques alternos */
.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block--reverse .service-block__visual {
  order: 2;
}

.service-block__tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.tag--oracle { background: var(--color-accent-dim); color: var(--color-accent); }
.tag--ia { background: var(--color-accent-2-dim); color: #b35f0f; }
.tag--negocio { background: rgba(16, 23, 61, 0.08); color: var(--color-navy); }

.service-block h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: 18px;
}

.service-block p {
  color: var(--color-text-muted);
  margin-bottom: 22px;
}

.service-block__visual {
  background: linear-gradient(160deg, var(--color-bg-dark), var(--color-navy));
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.service-block__visual span {
  font-size: 72px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.feature-grid div {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
  color: var(--color-text-muted);
}

.feature-grid div::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 700;
}

/* Casos de éxito */
.case-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.case-card__header {
  background: var(--color-bg-alt);
  padding: 28px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.case-card__header strong {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-navy);
}

.case-card__body {
  padding: 30px;
}

.case-card__metrics {
  display: flex;
  gap: 28px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.case-card__metrics div strong {
  display: block;
  font-family: var(--font-heading);
  color: var(--color-accent);
  font-size: 22px;
}

.case-card__metrics div span {
  font-size: 12.5px;
  color: var(--color-text-muted);
}

.testimonial {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
}

.testimonial p {
  font-size: 19px;
  color: var(--color-navy);
  font-style: italic;
  margin-bottom: 24px;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.testimonial__author-photo {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
}

.testimonial__author strong {
  display: block;
  font-size: 15px;
  color: var(--color-navy);
}

.testimonial__author span {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Contacto */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
}

.contact-info__item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 28px;
}

.contact-info__item h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.contact-info__item p, .contact-info__item a {
  font-size: 14.5px;
  color: var(--color-text-muted);
}

.form-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-navy);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 13px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 14px;
}

.map-placeholder {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-top: 8px;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav__links, .nav__cta .btn--ghost { display: none; }
  .nav__toggle { display: flex; }
  .hero .container { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .service-block { grid-template-columns: 1fr; }
  .service-block--reverse .service-block__visual { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; text-align: center; }
}

@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .hero { padding: 140px 0 72px; }
  .page-hero { padding: 130px 0 56px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ---------- Menú móvil ---------- */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--color-bg-darker);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  padding: 100px 32px 40px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav a {
  color: #fff;
  font-size: 22px;
  font-weight: 600;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav__close {
  position: absolute;
  top: 28px;
  right: 28px;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}