/* ============================================================
   Sindicato SKF Chilena S.A.I.C. — Sistema de diseño
   Paleta: acero institucional + acento ámbar de seguridad
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders+Display:wght@600;700;800&family=Source+Sans+3:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500&display=swap');

:root{
  --ink:        #1B2430; /* texto principal, headers oscuros */
  --steel:      #33526E; /* color de marca primario */
  --steel-dark: #223A4E;
  --amber:      #D98B2B; /* acento, usar con moderación */
  --paper:      #EEF0F2; /* fondo claro, base fría (no crema) */
  --paper-alt:  #E2E6E9;
  --white:      #FFFFFF;
  --graphite:   #5B6570; /* texto secundario */
  --line:       #C7CDD3; /* bordes / rivets */
  --focus:      #B5591A;

  --display: 'Big Shoulders Display', sans-serif;
  --body: 'Source Sans 3', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
img{ max-width:100%; display:block; }
a{ color: inherit; }

h1,h2,h3,h4{
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0 0 0.4em 0;
  color: var(--ink);
}
h1{ font-size: clamp(2.4rem, 5vw, 4.2rem); font-weight: 800; }
h2{ font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3{ font-size: 1.25rem; }

p{ margin: 0 0 1em 0; }
.lead{ font-size: 1.15rem; color: var(--graphite); }

.container{
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
header.site{
  background: var(--ink);
  color: var(--white);
  position: sticky; top:0; z-index: 50;
  border-bottom: 3px solid var(--amber);
}
.nav-wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding: 14px 24px;
  max-width: 1120px; margin:0 auto;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family: var(--display); font-weight:800;
  font-size: 1.15rem; letter-spacing:0.02em;
  text-decoration:none; color:var(--white);
}
.brand .ring-mark{
  height:50px; width:50px; flex-shrink:0; border-radius:50%;
  background: var(--white); padding:4px;
  box-shadow: 0 0 0 2px var(--amber);
}
nav.main-nav{ display:flex; gap: 26px; flex-wrap:wrap; }
nav.main-nav a{
  color: #D7DCE1; text-decoration:none; font-weight:600; font-size:0.94rem;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color: var(--white); border-bottom-color: var(--amber);
}
.nav-toggle{ display:none; }

@media (max-width: 760px){
  .nav-wrap{ flex-direction:column; align-items:flex-start; gap:10px; }
  nav.main-nav{ gap:16px; }
}

/* ---------- Hero ---------- */
.hero{
  background: var(--white);
  color: var(--ink);
  position: relative;
  overflow:hidden;
  border-bottom: 1px solid var(--line);
}
.hero-inner{
  display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 40px;
  align-items:center;
  padding: 76px 24px 84px;
  max-width: 1120px; margin:0 auto;
}
@media (max-width: 860px){ .hero-inner{ grid-template-columns: 1fr; padding: 56px 24px; } }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--mono); font-size:0.78rem; letter-spacing:0.08em;
  text-transform:uppercase; color: var(--steel);
  margin-bottom: 18px;
}
.eyebrow .dot{ width:7px; height:7px; border-radius:50%; background: var(--amber); }

.hero h1{ color: var(--ink); }
.hero .lead{ color: var(--graphite); max-width: 52ch; }

.cta-row{ display:flex; gap:14px; margin-top: 28px; flex-wrap:wrap; }
.btn{
  display:inline-block; padding: 13px 26px; border-radius: 3px;
  font-weight:700; text-decoration:none; font-size:0.96rem;
  border: 2px solid transparent; transition: transform .15s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--amber); color: var(--ink); }
.btn-ghost{ border-color: var(--steel); color: var(--steel); }

.bearing-art{ width:100%; max-width: 380px; margin: 0 auto; }

/* ---------- Sections ---------- */
section{ padding: 68px 0; }
section.alt{ background: var(--white); }
.section-head{ max-width: 68ch; margin-bottom: 40px; }
.section-head .eyebrow{ color: var(--steel); }
.section-head .eyebrow .dot{ background: var(--amber); }

.ring-bullet{
  display:inline-flex; align-items:center; justify-content:center;
  width: 30px; height:30px; border-radius:50%;
  border: 3px solid var(--amber); flex-shrink:0;
}

.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.grid-2{ display:grid; grid-template-columns: repeat(2,1fr); gap: 26px; }
@media (max-width: 860px){ .grid-3, .grid-2{ grid-template-columns: 1fr; } }

.card{
  background: var(--white); border: 1px solid var(--line); border-radius: 4px;
  padding: 26px; position:relative;
}
.card::before{
  content:""; position:absolute; top:0; left:0; width: 100%; height:4px;
  background: var(--steel); border-radius: 4px 4px 0 0;
}
.card h3{ display:flex; align-items:center; gap:12px; }

.placeholder{
  background: repeating-linear-gradient(135deg, #FBEFDD, #FBEFDD 10px, #F6E4C6 10px, #F6E4C6 20px);
  border: 1px dashed var(--amber);
  color: #7A4E12; font-family: var(--mono); font-size: 0.82rem;
  padding: 14px 16px; border-radius: 3px; margin-top: 10px;
}
.placeholder strong{ font-family: var(--body); }

table.data{ width:100%; border-collapse: collapse; background: var(--white); }
table.data th, table.data td{
  text-align:left; padding: 13px 16px; border-bottom: 1px solid var(--line);
  font-size: 0.94rem;
}
table.data th{
  font-family: var(--mono); font-size: 0.74rem; text-transform:uppercase;
  letter-spacing: 0.06em; color: var(--graphite); background: var(--paper-alt);
}

.divider-ring{
  display:flex; align-items:center; gap: 14px; margin: 56px 0 0;
  color: var(--graphite); font-family: var(--mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.06em;
}
.divider-ring::before, .divider-ring::after{
  content:""; flex:1; height:1px; background: var(--line);
}

/* ---------- Forms ---------- */
form.contact-form{ display:grid; gap: 16px; max-width: 560px; }
form.contact-form label{ font-weight:600; font-size:0.9rem; display:block; margin-bottom:6px; }
form.contact-form input, form.contact-form textarea, form.contact-form select{
  width:100%; padding: 11px 13px; border:1px solid var(--line); border-radius:3px;
  font-family: var(--body); font-size:0.96rem; background: var(--white);
}
form.contact-form input:focus, form.contact-form textarea:focus{
  outline: 3px solid var(--amber); outline-offset: 1px; border-color: var(--steel);
}
form.contact-form button{ justify-self:start; }

/* ---------- Footer ---------- */
footer.site{
  background: var(--ink); color: #B9C2CB; padding: 44px 0 26px; margin-top: 40px;
}
footer.site .foot-grid{ display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 34px; }
@media (max-width: 760px){ footer.site .foot-grid{ grid-template-columns: 1fr; } }
footer.site h4{ color: var(--white); font-size:0.85rem; text-transform:uppercase; letter-spacing:0.05em; font-family: var(--body); font-weight:700; }
footer.site a{ color:#B9C2CB; text-decoration:none; font-size:0.92rem; }
footer.site a:hover{ color: var(--amber); }
footer.site .legal-line{
  border-top: 1px solid #34455A; margin-top: 30px; padding-top: 18px;
  font-size: 0.8rem; color:#8E99A5; display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .btn{ transition:none; }
}