/* ==========================================================
   TESG – Tauro Enterprise Solutions Group
   Hoja de estilos compartida. Paleta tomada del logo:
   azul marino #2b4257 + azul acero #5f82a3
   ========================================================== */

:root {
  --navy: #2b4257;
  --navy-dark: #1d2f40;
  --steel: #5f82a3;
  --steel-dark: #4a6b8b;
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --surface: #ffffff;
  --border: #dbe3ec;
  --text: #1d2b3a;
  --muted: #5b6b7d;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(43, 66, 87, 0.12);
  --max: 1140px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--steel-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .6em; color: var(--navy); }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; color: var(--muted); }

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

.section { padding: 5rem 0; }
.section.alt { background: var(--bg-alt); }
.section-head { max-width: 680px; margin-bottom: 3rem; }
.section-head.center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--steel-dark);
  margin-bottom: .8rem;
}

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: .85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); color: #fff; }
.btn-outline { border-color: var(--navy); color: var(--navy); background: transparent; }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- Logo ---------- */
.logo { height: 46px; width: auto; display: block; }
.logo-footer { height: 54px; }

/* ---------- Header / navegación ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; }
.brand:hover { text-decoration: none; }

.nav-links { display: flex; align-items: center; gap: 1.8rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: .96rem; }
.nav-links a:hover,
.nav-links a.active { color: var(--navy); text-decoration: none; }
.nav-links a.active { border-bottom: 2px solid var(--steel); padding-bottom: 4px; }
.nav-links .btn { padding: .6rem 1.2rem; color: #fff; border-bottom: 2px solid transparent; }
.nav-links .btn:hover,
.nav-links .btn.active { color: #fff; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: .5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: .25s; }

/* ---------- Hero ---------- */
.hero {
  padding: 6rem 0 5rem;
  background:
    radial-gradient(900px 400px at 90% -10%, rgba(95, 130, 163, .22), transparent 60%),
    radial-gradient(700px 400px at 0% 110%, rgba(43, 66, 87, .08), transparent 60%),
    var(--bg);
}
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 3rem; align-items: center; }
.hero p.lead { font-size: 1.15rem; max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.hero h1 span { color: var(--steel); }

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 4px solid var(--steel);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow);
}
.hero-card ul { list-style: none; padding: 0; margin: 0; }
.hero-card li { display: flex; gap: .8rem; padding: .7rem 0; border-bottom: 1px solid var(--border); color: var(--text); }
.hero-card li:last-child { border-bottom: 0; }
.hero-card li::before { content: "✓"; color: var(--steel); font-weight: 800; }

.page-hero { padding: 4.5rem 0 3rem; background: var(--bg-alt); border-bottom: 1px solid var(--border); }
.page-hero p { max-width: 640px; font-size: 1.1rem; }

/* ---------- Grillas y tarjetas ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--steel); box-shadow: var(--shadow); }
.card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  background: rgba(95, 130, 163, .15);
  margin-bottom: 1rem;
}
.card ul { margin: 1rem 0 0; padding-left: 1.2rem; color: var(--muted); }
.card li { margin-bottom: .35rem; }

/* ---------- Pasos / proceso ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.step {
  position: relative;
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--steel);
  margin-bottom: .5rem;
}

/* ---------- Banda CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy), var(--navy-dark));
  border-radius: 20px;
  padding: 3.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow);
}
.cta-band h2 { color: #fff; }
.cta-band p { max-width: 560px; margin-inline: auto; color: #c5d3e0; }
.cta-band .btn-primary { background: #fff; color: var(--navy); }
.cta-band .btn-primary:hover { background: var(--bg-alt); color: var(--navy); }

/* ---------- Caso de éxito ---------- */
.case {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  margin-bottom: 2rem;
}
.tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  padding: .25rem .7rem;
  border-radius: 999px;
  background: rgba(95, 130, 163, .15);
  color: var(--navy);
  margin: 0 .4rem .4rem 0;
}
.placeholder-box {
  min-height: 220px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  padding: 1rem;
  background: var(--bg-alt);
}

/* ---------- Nosotros / valores ---------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.timeline { border-left: 2px solid var(--border); padding-left: 1.6rem; margin-left: .5rem; }
.timeline-item { position: relative; margin-bottom: 1.8rem; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.15rem;
  top: .45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--steel);
}

/* ---------- Contacto / formulario ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2.5rem; align-items: start; }

form .field { margin-bottom: 1.2rem; }
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .4rem; color: var(--navy); }
input, select, textarea {
  width: 100%;
  padding: .85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--steel);
  box-shadow: 0 0 0 3px rgba(95, 130, 163, .25);
}
textarea { min-height: 150px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-note { font-size: .85rem; color: var(--muted); margin-top: .8rem; }

.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { padding: .9rem 0; border-bottom: 1px solid var(--border); color: var(--text); }
.info-list li:last-child { border-bottom: 0; }
.info-list strong { display: block; color: var(--steel-dark); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 3.5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem; }
.footer-grid h4 { font-size: .9rem; text-transform: uppercase; letter-spacing: .1em; color: var(--steel-dark); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: .5rem; color: var(--muted); }
.footer-grid a { color: var(--navy); }
.copy { border-top: 1px solid var(--border); padding-top: 1.4rem; font-size: .85rem; color: var(--muted); text-align: center; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid, .contact-grid, .case { grid-template-columns: 1fr; }
  .grid-3, .values { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .logo { height: 38px; }
  .nav-links {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: .5rem 1.25rem 1.2rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; padding: .7rem 0; border-bottom: 1px solid var(--border); }
  .nav-links li:last-child { border-bottom: 0; }
  .grid-3, .grid-2, .values, .steps, .form-row, .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 3.5rem 0; }
  .hero { padding: 4rem 0 3rem; }
}

/* ---------- Botón flotante de WhatsApp ---------- */
.whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .28);
  z-index: 100;
  transition: transform .2s ease, background .2s ease;
}
.whatsapp-float:hover { transform: scale(1.08); background: #1ebe5a; text-decoration: none; }
.whatsapp-float::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #25d366;
  animation: wa-pulse 2.2s ease-out infinite;
}
@keyframes wa-pulse {
  0% { transform: scale(1); opacity: .7; }
  100% { transform: scale(1.6); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) { .whatsapp-float::after { animation: none; } }

/* ---------- Imágenes de casos ---------- */
.case-media {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--bg-alt);
}
.case-media img { width: 100%; height: auto; display: block; }