/* =========================================================
   Valeria Cortes-Mora — Portfolio
   Design system: "Field Log" — geography-grounded, coordinates
   and topographic contour lines as structural devices.
   ========================================================= */

:root{
  --ink: #0E2A22;         /* deep green-black, primary text/dark bg */
  --ink-70: rgba(14,42,34,0.7);
  --ink-45: rgba(14,42,34,0.45);
  --paper: #FFFFFF;       /* crisp white page background */
  --paper-warm: #EDFAF3;  /* light mint card background */
  --card: #FFFFFF;
  --ochre: #16A34A;       /* vibrant green accent */
  --teal: #2563EB;        /* vibrant blue accent */
  --clay: #16A34A;
  --line: rgba(14,42,34,0.12);

  --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, monospace;

  --max: 1120px;
}

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

html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body{
  margin:0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
}

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

a{ color: var(--teal); text-decoration: none; }
a:hover{ color: var(--ink); }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 0.5em;
  color: var(--ink);
}
h1{ font-size: clamp(2.6rem, 4.5vw + 1rem, 4.4rem); font-weight: 500; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.8rem, 2.4vw + 1rem, 2.6rem); font-weight: 500; }
h3{ font-size: 1.35rem; }
p{ margin: 0 0 1.1em; }

.lede{ font-size: 1.2rem; color: var(--ink-70); max-width: 46ch; }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:0.5em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1em;
}
.eyebrow::before{
  content:"";
  width: 1.4em;
  height: 1px;
  background: var(--teal);
  display:inline-block;
}

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

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.5em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.9em 1.5em;
  border-radius: 2px;
  border: 1px solid var(--ink);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-primary{ background: var(--ink); color: var(--paper); }
.btn-primary:hover{ background: var(--teal); border-color: var(--teal); color: #fff; }
.btn-ghost{ background: transparent; color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--paper); }
.btn-row{ display:flex; flex-wrap:wrap; gap: 14px; }

/* ---------- Header / nav ---------- */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  max-width: var(--max); margin:0 auto; padding: 18px 28px;
  display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; flex-direction:column; line-height:1.2; color:var(--ink); }
.brand:hover{ color: var(--ink); }
.brand-name{ font-family: var(--font-display); font-size:1.15rem; font-weight:600; }
.brand-coords{ font-family: var(--font-mono); font-size:0.65rem; letter-spacing:0.1em; color: var(--teal); }

.site-nav{ display:flex; gap: 30px; }
.site-nav a{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-70);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover, .site-nav a.active{ color: var(--ink); border-color: var(--ochre); }

.nav-toggle{
  display:none; flex-direction:column; gap:5px;
  background:none; border:0; cursor:pointer; padding: 8px;
}
.nav-toggle span{ width:22px; height:2px; background: var(--ink); display:block; }

@media (max-width: 760px){
  .nav-toggle{ display:flex; }
  .site-nav{
    position:absolute; top:100%; left:0; right:0;
    background: var(--paper-warm);
    flex-direction:column; gap:0;
    max-height:0; overflow:hidden;
    border-bottom: 1px solid var(--line);
    transition: max-height 0.25s ease;
  }
  .site-nav.open{ max-height: 320px; }
  .site-nav a{ padding: 16px 28px; border-bottom: 1px solid var(--line); }
}

/* ---------- Topo divider ---------- */
.topo-divider{
  height: 30px;
  background-image: url('topo-line.svg');
  background-repeat: repeat-x;
  background-size: 200px 30px;
  background-position: center;
}

/* ---------- Hero ---------- */
.hero{ padding: 90px 0 60px; }
.hero-grid{
  display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items:center;
}
@media (max-width: 860px){ .hero-grid{ grid-template-columns:1fr; } }

.hero p.lede{ margin-bottom: 1.6em; }

/* ---------- Journey / field log (signature element) ---------- */
.journey{ padding: 70px 0 90px; background: var(--paper-warm); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.journey-head{ max-width: 60ch; margin-bottom: 50px; }
.trail{ position:relative; padding-left: 34px; }
.trail::before{
  content:""; position:absolute; left:5px; top:8px; bottom:8px; width:1px;
  background: repeating-linear-gradient(to bottom, var(--ink-45) 0 6px, transparent 6px 12px);
}
.waypoint{ position:relative; padding-bottom: 42px; }
.waypoint:last-child{ padding-bottom:0; }
.waypoint::before{
  content:""; position:absolute; left:-34px; top:4px; width:11px; height:11px;
  border-radius:50%; background: var(--paper-warm); border: 2px solid var(--ochre);
}
.waypoint-coords{ font-family: var(--font-mono); font-size:0.75rem; letter-spacing:0.06em; color: var(--teal); margin-bottom:6px; display:block; }
.waypoint h3{ margin-bottom: 4px; }
.waypoint-period{ font-family: var(--font-mono); font-size:0.72rem; color: var(--ink-45); text-transform:uppercase; letter-spacing:0.08em; }
.waypoint p{ margin: 8px 0 0; color: var(--ink-70); max-width: 56ch; }

/* ---------- Card grids ---------- */
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-2{ display:grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
@media (max-width: 860px){ .grid-3{ grid-template-columns:1fr 1fr; } .grid-2{ grid-template-columns:1fr; } }
@media (max-width: 600px){ .grid-3{ grid-template-columns:1fr; } }

.card{
  background: var(--card);
  border: 1px solid var(--line);
  padding: 30px;
  border-radius: 3px;
}
.card .tag{
  font-family: var(--font-mono); font-size:0.68rem; letter-spacing:0.08em;
  text-transform:uppercase; color: var(--ochre); display:block; margin-bottom:10px;
}

/* ---------- Sections generic ---------- */
section{ padding: 80px 0; }
.section-head{ max-width: 62ch; margin-bottom: 50px; }
.section-alt{ background: var(--paper-warm); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

.two-col{ display:grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items:start; }
@media (max-width: 860px){ .two-col{ grid-template-columns:1fr; } }
.two-col.reverse{ grid-template-columns: 1.15fr 0.85fr; }
@media (max-width: 860px){ .two-col.reverse{ grid-template-columns:1fr; } }

.portrait{
  border-radius: 3px;
  border: 1px solid var(--line);
  aspect-ratio: 4/5;
  object-fit: cover;
  width: 100%;
}
.portrait-round{ border-radius: 50%; aspect-ratio: 1/1; }

/* ---------- Page header (non-home pages) ---------- */
.page-head{ padding: 70px 0 50px; }

/* ---------- Timeline (resume) ---------- */
.timeline{ position:relative; padding-left: 34px; }
.timeline::before{ content:""; position:absolute; left:5px; top:8px; bottom:8px; width:1px; background: var(--line); }
.timeline-item{ position:relative; padding-bottom: 46px; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:""; position:absolute; left:-34px; top:4px; width:11px; height:11px;
  border-radius:50%; background: var(--paper); border: 2px solid var(--teal);
}
.timeline-date{ font-family: var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color: var(--ink-45); }

/* ---------- Skills ---------- */
.skill-group{ margin-bottom: 34px; }
.skill-group h3{ margin-bottom: 14px; }
.pill-row{ display:flex; flex-wrap:wrap; gap:10px; }
.pill{
  font-family: var(--font-mono); font-size:0.78rem;
  border: 1px solid var(--line); padding: 8px 14px; border-radius: 20px;
  color: var(--ink-70); background: var(--card);
}

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; }
@media (max-width: 860px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-list{ list-style:none; margin:0; padding:0; }
.contact-list li{ padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-list li:first-child{ padding-top:0; }
.contact-list .label{ font-family: var(--font-mono); font-size:0.68rem; text-transform:uppercase; letter-spacing:0.08em; color: var(--ink-45); display:block; margin-bottom:4px; }

.form-field{ margin-bottom: 20px; }
.form-field label{ display:block; font-family: var(--font-mono); font-size:0.72rem; text-transform:uppercase; letter-spacing:0.08em; color: var(--ink-70); margin-bottom:8px; }
.form-field input, .form-field textarea{
  width:100%; padding: 12px 14px; font-family: var(--font-body); font-size: 1rem;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); border-radius: 2px;
}
.form-field textarea{ resize: vertical; min-height: 140px; }
.form-field input:focus, .form-field textarea:focus{ outline: 2px solid var(--teal); outline-offset: 1px; }

/* ---------- CTA band ---------- */
.cta-band{ background: linear-gradient(135deg, var(--ochre), var(--teal)); color: #fff; padding: 70px 0; text-align:center; }
.cta-band h2{ color: #fff; }
.cta-band .lede{ color: rgba(255,255,255,0.85); margin: 0 auto 1.8em; }
.cta-band .btn-primary{ background: #fff; color: var(--ink); border-color: #fff; }
.cta-band .btn-primary:hover{ background: var(--ink); border-color: var(--ink); color:#fff; }
.cta-band .btn-row{ justify-content:center; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,0.8); padding: 40px 0; }
.footer-inner{ display:flex; flex-wrap:wrap; justify-content:space-between; gap: 20px; align-items:center; }
.footer-name{ font-family: var(--font-display); color: var(--paper); margin:0; }
.footer-meta{ font-family: var(--font-mono); font-size:0.75rem; margin: 4px 0 0; color: rgba(255,255,255,0.55); }
.footer-links{ display:flex; gap: 24px; }
.footer-links a{ color: rgba(255,255,255,0.8); font-family: var(--font-mono); font-size:0.8rem; }
.footer-links a:hover{ color: var(--ochre); }

/* ---------- Scroll reveal ---------- */
.reveal{ opacity:0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in{ opacity:1; transform: translateY(0); }