/* ============================================================
   Ernesto Rencoret Orrego — Oficina digital de consultoría
   Paleta: azul marino / blanco / gris piedra
   ============================================================ */

:root {
  --navy-950: #0f1c2e;
  --navy-900: #16263b;
  --navy-800: #1f3450;
  --navy-700: #2c4a6e;
  --navy-100: #e8edf3;

  --stone-50: #faf9f7;
  --stone-100: #f3f1ec;
  --stone-200: #e6e2da;
  --stone-300: #d4cec1;
  --stone-500: #9b9488;
  --stone-700: #6b6459;

  --white: #ffffff;
  --ink: #2b3648;
  --ink-soft: #55606f;

  --navy-50: #eef2f7;
  --accent-sky: #4d7ba3;
  --shadow-sm: 0 1px 3px rgba(15, 28, 46, 0.06);
  --shadow-md: 0 6px 20px rgba(15, 28, 46, 0.08);

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --max-width: 1120px;
  --radius: 2px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--navy-900);
  line-height: 1.25;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); font-weight: 500; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1.1em; color: var(--ink-soft); }
p:last-child { margin-bottom: 0; }

a { color: var(--navy-800); text-decoration: none; }
a:hover { color: var(--navy-950); }

ul, ol { color: var(--ink-soft); padding-left: 1.2em; }
li { margin-bottom: 0.5em; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

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

/* ---------- Eyebrow / kicker ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-sky);
  margin-bottom: 1em;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--stone-200);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--serif);
  font-size: 1.18rem;
  color: var(--navy-950);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-title {
  font-size: 0.72rem;
  color: var(--stone-700);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 0;
}

nav.main-nav a {
  font-size: 0.88rem;
  color: var(--navy-800);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--navy-950);
  border-bottom-color: var(--accent-sky);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--stone-300);
  border-radius: var(--radius);
  width: 42px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--navy-900);
  position: relative;
}
.nav-toggle span::before { position: absolute; top: -6px; width: 18px; height: 2px; background: var(--navy-900); }
.nav-toggle span::after { position: absolute; top: 6px; width: 18px; height: 2px; background: var(--navy-900); }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 76px;
  background: linear-gradient(165deg, var(--navy-50) 0%, var(--stone-50) 45%, var(--white) 100%);
  border-bottom: 1px solid var(--stone-200);
}

.hero .container { max-width: var(--max-width); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 56px;
  align-items: center;
}

.hero-photo { max-width: 340px; }

.hero h1 { max-width: 18ch; }

.hero .lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 56ch;
  margin-bottom: 2.2em;
}

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

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 14px 28px;
  border-radius: var(--radius);
  transition: all 0.18s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--navy-900);
  color: var(--white) !important;
}
.btn-primary:hover { background: var(--navy-950); }

.btn-secondary {
  background: transparent;
  color: var(--accent-sky) !important;
  border-color: var(--accent-sky);
}
.btn-secondary:hover { border-color: var(--navy-700); color: var(--navy-900) !important; }

/* ---------- Page header (non-home) ---------- */
.page-header {
  padding: 72px 0 56px;
  background: linear-gradient(165deg, var(--navy-50) 0%, var(--stone-50) 60%);
  border-bottom: 1px solid var(--stone-200);
}
.page-header .container { max-width: 800px; }
.page-header .lede { font-size: 1.05rem; max-width: 60ch; }

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section + .section { border-top: 1px solid var(--stone-200); }
.section-tight { padding: 56px 0; }
.section-narrow .container { max-width: 760px; }

.section-intro { max-width: 700px; margin-bottom: 3em; }

.section-alt { background: linear-gradient(180deg, var(--stone-50) 0%, var(--navy-50) 100%); }

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--stone-200);
  border: 1px solid var(--stone-200);
}

.card {
  background: var(--white);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card h3 { margin-bottom: 0.5em; font-size: 1.1rem; }
.card p { font-size: 0.95rem; margin: 0; }

/* ---------- Service blocks (stacked, with rule) ---------- */
.service-list { display: flex; flex-direction: column; }

.service {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  padding: 36px 0;
  border-top: 1px solid var(--stone-200);
}
.service:last-child { border-bottom: 1px solid var(--stone-200); }

.service h3 { margin-bottom: 0.4em; }
.service p { font-size: 0.97rem; }

/* ---------- Two column ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: start;
}

/* ---------- Profile photo ---------- */
.profile-photo {
  border: 1px solid var(--stone-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.profile-photo img {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(35%) contrast(1.03);
}
.profile-photo .photo-caption {
  padding: 10px 14px;
  font-size: 0.78rem;
  color: var(--stone-700);
  border-top: 1px solid var(--stone-200);
  background: var(--stone-50);
}
.profile-photo-small { max-width: 260px; }

/* ---------- Definition-style list (Perfil) ---------- */
.fact-block { margin-bottom: 2.4em; }
.fact-block h3 {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stone-700);
  margin-bottom: 0.9em;
}
.fact-block ul { list-style: none; padding-left: 0; }
.fact-block li {
  padding-left: 22px;
  position: relative;
  font-size: 0.99rem;
  color: var(--ink);
}
.fact-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 1px;
  background: var(--navy-700);
}
.fact-block p { font-size: 0.99rem; color: var(--ink); }

/* ---------- Experience timeline (Perfil) ---------- */
.exp-list { display: flex; flex-direction: column; }
.exp-item {
  padding: 14px 0;
  border-top: 1px solid var(--stone-200);
}
.exp-item:last-child { border-bottom: 1px solid var(--stone-200); }
.exp-item .exp-role { color: var(--navy-900); font-weight: 600; }
.exp-item .exp-dates { color: var(--stone-700); font-weight: 400; }
.exp-item .exp-title { display: block; font-size: 0.92rem; color: var(--ink-soft); margin-top: 2px; }

/* ---------- Numbered process ---------- */
.process { list-style: none; padding: 0; margin: 0; counter-reset: step; }
.process li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--stone-200);
}
.process li:last-child { border-bottom: 1px solid var(--stone-200); }
.process li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--stone-500);
}
.process h3 { margin-bottom: 0.3em; font-size: 1.05rem; }
.process p { font-size: 0.96rem; margin: 0; }

/* ---------- Pull quote / positioning line ---------- */
.pull-quote {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  color: var(--navy-900);
  line-height: 1.45;
  max-width: 820px;
  font-weight: 500;
  padding-left: 24px;
  border-left: 3px solid var(--navy-700);
}

/* ---------- Book / publication cards ---------- */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.pub-card {
  border: 1px solid var(--stone-200);
  padding: 32px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.pub-card .pub-label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone-700);
  margin-bottom: 0.8em;
  display: block;
}
.pub-card h3 { margin-bottom: 0.25em; }
.pub-card p { font-size: 0.92rem; margin: 0; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color: var(--white);
  padding: 72px 0;
}
.cta-banner .container { max-width: 760px; text-align: left; }
.cta-banner h2 { color: var(--white); }
.cta-banner p { color: rgba(255,255,255,0.72); font-size: 1.02rem; }
.cta-banner .btn-primary { background: var(--white); color: var(--navy-950) !important; }
.cta-banner .btn-primary:hover { background: var(--stone-100); }
.cta-banner .btn-secondary { color: var(--white) !important; border-color: rgba(255,255,255,0.3); }
.cta-banner .btn-secondary:hover { border-color: var(--white); }

/* ---------- Contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
}

.contact-info dl { margin: 0; }
.contact-info dt {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone-700);
  margin-bottom: 0.3em;
}
.contact-info dd {
  margin: 0 0 1.8em;
  font-size: 1.02rem;
  color: var(--ink);
}

.tag-list { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.tag-list li {
  margin: 0;
  font-size: 0.85rem;
  padding: 6px 14px;
  border: 1px solid var(--stone-300);
  color: var(--ink-soft);
  border-radius: 999px;
}

form.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--stone-700);
  font-weight: 600;
}
.field input,
.field select,
.field textarea {
  font-family: var(--sans);
  font-size: 0.96rem;
  padding: 12px 14px;
  border: 1px solid var(--stone-300);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
}
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--navy-700);
}

.form-note {
  font-size: 0.85rem;
  color: var(--stone-700);
  margin-top: 4px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: linear-gradient(180deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color: rgba(255,255,255,0.65);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand { display: flex; flex-direction: column; }
.footer-brand .brand-name { display: block; color: var(--white); font-size: 1.15rem; }
.footer-brand .brand-title { display: block; color: rgba(255,255,255,0.55); margin-top: 2px; }
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.9rem; margin-top: 16px; max-width: 32ch; }

.footer-col h4 {
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1em;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.7em; }
.footer-col a { color: rgba(255,255,255,0.8); font-size: 0.92rem; }
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-photo { max-width: 220px; }
  .card-grid { grid-template-columns: 1fr; }
  .pub-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .service { grid-template-columns: 1fr; gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 760px) {
  nav.main-nav {
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--stone-200);
    display: none;
    padding: 8px 0;
  }
  nav.main-nav.open { display: block; }
  nav.main-nav ul { flex-direction: column; gap: 0; }
  nav.main-nav li { border-top: 1px solid var(--stone-200); }
  nav.main-nav li:first-child { border-top: none; }
  nav.main-nav a { display: block; padding: 16px 28px; border-bottom: none; }
  .nav-toggle { display: flex; }
  .form-row { grid-template-columns: 1fr; }
}