/* River Atacama — hoja de estilos corporativa
   Paleta: Cobre #B55A2B · Óxido #D48A2E · Arena #E2C9A6 · Grafito #333333 */

:root {
  --cobre: #B55A2B;
  --oxido: #D48A2E;
  --arena: #E2C9A6;
  --grafito: #333333;
  --grafito-deep: #1E1C1A;
  --bg: #F8F5F0;
  --white: #FFFFFF;
  --ink-soft: #6B6560;
  --max-w: 1200px;
  --pad-mobile: 20px;
  --pad-desktop: 80px;
  --font-heading: 'Montserrat', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--grafito);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-heading); margin: 0; }
p { margin: 0; }
::selection { background: var(--cobre); color: #fff; }

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad-mobile); }
@media (min-width: 900px) { .wrap { padding: 0 var(--pad-desktop); } }

.icon { width: 1em; height: 1em; display: inline-block; vertical-align: -0.15em; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid rgba(51,51,51,0.08);
  height: 100px;
}
.nav .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { padding: 10px 0; }
.nav-logo img { height: 82px; width: auto; }
.nav-links { display: none; align-items: center; gap: 22px; }
.nav-link {
  font-family: var(--font-heading); font-size: 12px; font-weight: 700; white-space: nowrap;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-soft);
  padding-bottom: 6px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s;
}
.nav-link:hover, .nav-link.active { color: var(--cobre); border-color: var(--cobre); }
.nav-cta {
  background: var(--cobre); color: #fff; padding: 10px 20px; border-radius: 4px; white-space: nowrap;
  font-family: var(--font-heading); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  transition: background .2s;
}
.nav-cta:hover { background: var(--grafito); }
.nav-webmail {
  display: inline-flex; align-items: center; gap: 7px; color: var(--grafito); white-space: nowrap;
  border: 1.5px solid rgba(51,51,51,0.25); padding: 8.5px 16px; border-radius: 4px;
  font-family: var(--font-heading); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  transition: border-color .2s, color .2s;
}
.nav-webmail .icon { width: 15px; height: 15px; }
.nav-webmail:hover { border-color: var(--cobre); color: var(--cobre); }
.mobile-menu .nav-webmail { border: 1.5px solid rgba(51,51,51,0.25); justify-content: center; padding: 12px; }
.menu-toggle {
  display: flex; background: none; border: 0; cursor: pointer; color: var(--grafito); padding: 6px;
}
.menu-toggle .icon { width: 28px; height: 28px; }
.mobile-menu {
  display: none; flex-direction: column; gap: 18px; background: #fff;
  border-top: 1px solid rgba(51,51,51,0.08); padding: 22px var(--pad-mobile) 28px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-family: var(--font-heading); font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--grafito); }
.mobile-menu .nav-cta { text-align: center; }

@media (min-width: 1220px) {
  .nav-links { display: flex; }
  .menu-toggle { display: none; }
  .mobile-menu { display: none !important; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  padding-top: 100px; overflow: hidden;
  background-color: var(--grafito-deep);
  background-image: linear-gradient(120deg, rgba(30,28,26,0.95) 0%, rgba(30,28,26,0.82) 45%, rgba(30,28,26,0.5) 100%);
}
.hero-veins { position: absolute; inset: 0; pointer-events: none; }
.hero-content { position: relative; z-index: 2; padding: 90px 0 70px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18); color: var(--arena); padding: 8px 18px;
  font-family: var(--font-heading); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.2em;
  margin-bottom: 26px;
}
.hero h1 {
  color: #fff; font-size: clamp(2.1rem, 5.2vw, 3.6rem); font-weight: 800; line-height: 1.1; margin-bottom: 24px; max-width: 720px;
}
.hero h1 em { color: var(--oxido); font-style: normal; }
.hero p.lead {
  color: rgba(255,255,255,0.8); font-size: 1.15rem; line-height: 1.65; max-width: 560px; margin-bottom: 40px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 32px; border-radius: 4px; font-family: var(--font-heading);
  font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em;
  cursor: pointer; border: 2px solid transparent; transition: all .25s ease;
}
.btn-primary { background: var(--cobre); color: #fff; }
.btn-primary:hover { background: #fff; color: var(--grafito); }
.btn-outline { border-color: rgba(255,255,255,0.35); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.1); }
.scroll-hint {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  display: none; flex-direction: column; align-items: center; gap: 6px; color: rgba(255,255,255,0.5);
  font-family: var(--font-heading); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
}
@media (min-width: 800px) { .scroll-hint { display: flex; } }

/* ---------- SECTION helpers ---------- */
section { padding: 96px 0; }
.section-white { background: var(--white); }
.section-bg { background: var(--bg); }
.section-dark { background: var(--grafito-deep); position: relative; overflow: hidden; }
.eyebrow-line { width: 46px; height: 3px; background: linear-gradient(90deg, var(--cobre), var(--oxido)); display: inline-block; margin-right: 12px; vertical-align: middle; }
.section-title { font-size: clamp(1.7rem, 3vw, 2.3rem); font-weight: 800; color: var(--grafito); margin-bottom: 20px; display: flex; align-items: center; }
.section-title.center { justify-content: center; text-align: center; }
.section-title.on-dark { color: #fff; }
.section-sub { color: var(--ink-soft); font-size: 1.05rem; max-width: 640px; }
.section-sub.center { margin: 0 auto; text-align: center; }

/* ---------- QUIENES SOMOS ---------- */
.about-grid { display: grid; gap: 60px; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) { .about-grid { grid-template-columns: 1fr 1fr; } }
.about-text p { color: var(--ink-soft); line-height: 1.75; margin-bottom: 22px; }
.about-text p.lg { font-size: 1.12rem; }
.mv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 34px; }
.mv-item { border-left: 2px solid var(--arena); padding-left: 16px; }
.mv-item h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.mv-item p { color: var(--ink-soft); font-size: 0.92rem; }

.about-visual { position: relative; }
.about-visual-box {
  aspect-ratio: 1/1; background: var(--bg); border-radius: 10px; border: 1px solid rgba(51,51,51,0.06);
  display: flex; align-items: center; justify-content: center; padding: 60px;
}

/* ---------- VALUES ---------- */
.values-grid { display: grid; gap: 24px; grid-template-columns: 1fr; margin-top: 50px; }
@media (min-width: 720px) { .values-grid { grid-template-columns: repeat(3, 1fr); } }
.value-card {
  background: var(--white); padding: 44px 34px; text-align: center; border-radius: 8px;
  border: 1px solid rgba(51,51,51,0.06); border-top: 3px solid transparent; transition: all .3s ease;
}
.value-card:hover { transform: translateY(-4px); border-top-color: var(--cobre); box-shadow: 0 16px 34px rgba(51,51,51,0.08); }
.value-icon {
  width: 64px; height: 64px; border-radius: 50%; background: rgba(226,201,166,0.4); color: var(--cobre);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 22px;
}
.value-icon .icon { width: 30px; height: 30px; }
.value-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; }
.value-card p { color: var(--ink-soft); font-size: 0.92rem; line-height: 1.6; }

/* ---------- SERVICES ---------- */
.services-grid { display: grid; gap: 24px; grid-template-columns: 1fr; margin-top: 56px; }
@media (min-width: 640px) { .services-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1080px) { .services-grid { grid-template-columns: repeat(4, 1fr); } }
.service-card {
  background: var(--bg); padding: 34px 28px; border-radius: 8px; border: 1px solid rgba(51,51,51,0.06);
  border-top: 3px solid transparent; transition: all .3s ease;
}
.service-card:hover { transform: translateY(-4px); border-top-color: var(--cobre); box-shadow: 0 16px 34px rgba(51,51,51,0.08); }
.service-icon {
  width: 56px; height: 56px; border-radius: 6px; background: #fff; color: var(--cobre);
  display: flex; align-items: center; justify-content: center; margin-bottom: 22px; box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  transition: background .25s, color .25s;
}
.service-icon .icon { width: 27px; height: 27px; }
.service-card:hover .service-icon { background: var(--cobre); color: #fff; }
.service-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; }
.service-card p { color: var(--ink-soft); font-size: 0.9rem; line-height: 1.6; }

/* ---------- BRAND ---------- */
.brand-text p { color: rgba(255,255,255,0.72); line-height: 1.75; margin-bottom: 20px; }
.brand-text p.small { color: rgba(255,255,255,0.5); font-size: 0.92rem; }
.brand-text-centered { max-width: 720px; margin: 0 auto; text-align: center; }
.brand-terrain-icon { position: absolute; right: -60px; bottom: -60px; opacity: 0.05; pointer-events: none; }
.brand-terrain-icon .icon { width: 420px; height: 420px; stroke-width: 0.6; }

/* ---------- CONTACT ---------- */
.contact-grid { display: grid; gap: 56px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-intro { color: var(--ink-soft); margin: 20px 0 44px; line-height: 1.7; max-width: 460px; }
.contact-item { display: flex; gap: 20px; margin-bottom: 30px; }
.contact-item .icon-wrap { color: var(--cobre); flex-shrink: 0; }
.contact-item .icon-wrap .icon { width: 24px; height: 24px; }
.contact-item h4 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.contact-item p { color: var(--ink-soft); font-size: 0.92rem; }
.contact-item p a { color: var(--cobre); font-weight: 600; transition: opacity .2s; }
.contact-item p a:hover { opacity: 0.75; }

.contact-form { background: var(--bg); padding: 38px; border-radius: 10px; border: 1px solid rgba(51,51,51,0.06); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 22px; }
.field label { display: block; font-family: var(--font-heading); font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--ink-soft); margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; background: #fff; border: 0; border-bottom: 2px solid rgba(51,51,51,0.18);
  padding: 12px 10px; font-family: var(--font-body); font-size: 0.95rem; color: var(--grafito);
  border-radius: 3px 3px 0 0; transition: border-color .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--cobre); }
.form-submit {
  width: 100%; background: var(--grafito); color: #fff; padding: 16px; border: 0; border-radius: 4px;
  font-family: var(--font-heading); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em;
  cursor: pointer; transition: background .2s;
}
.form-submit:hover { background: var(--cobre); }
.form-note { text-align: center; font-size: 0.78rem; color: rgba(107,101,96,0.85); margin-top: 16px; }
.form-note.sent { color: var(--cobre); font-weight: 600; }

/* ---------- FOOTER ---------- */
.footer { background: var(--grafito-deep); padding: 56px 0 0; border-top: 1px solid rgba(255,255,255,0.06); }
.footer-top { display: flex; flex-direction: column; gap: 48px; padding-bottom: 40px; }
@media (min-width: 800px) { .footer-top { flex-direction: row; justify-content: space-between; } }
.footer-brand { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 800; color: var(--oxido); margin-bottom: 20px; }
.footer-brand span { color: #fff; }
.footer-desc { color: rgba(255,255,255,0.55); font-size: 0.9rem; line-height: 1.7; max-width: 340px; margin-bottom: 18px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 4px; border: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); transition: all .2s;
}
.footer-social a:hover { border-color: var(--cobre); color: var(--cobre); }
.footer-cols { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col-title { font-family: var(--font-heading); font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; color: var(--oxido); margin-bottom: 6px; }
.footer-col a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 26px 0; }
.footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.78rem; }

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
  .about-visual-box { padding: 34px; }
}