/* =========================================================
   Portafolio — Javiera González Mardones
   Design tokens (light default, dark via prefers-color-scheme)
   ========================================================= */
:root {
  color-scheme: light;
  --brand:        #0f6b47;
  --brand-dark:   #0a4d33;
  --brand-light:  #1baf7a;
  --accent-blue:  #2a78d6;
  --accent-aqua:  #1baf7a;

  --page:         #f9f9f7;
  --surface:      #fcfcfb;
  --surface-alt:  #f1f2ee;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted:   #898781;
  --border:       rgba(11,11,11,0.10);
  --gridline:     #e1e0d9;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 2px rgba(11,11,11,0.06), 0 8px 24px rgba(11,11,11,0.06);
  --font-ui: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --brand:        #1baf7a;
    --brand-dark:   #0f6b47;
    --brand-light:  #3fd39a;
    --accent-blue:  #3987e5;
    --accent-aqua:  #199e70;

    --page:         #0d0d0d;
    --surface:      #1a1a19;
    --surface-alt:  #17201b;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted:   #898781;
    --border:       rgba(255,255,255,0.10);
    --gridline:     #2c2c2a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page);
  color: var(--text-primary);
  font-family: var(--font-ui);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 100;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 6px 16px rgba(15,107,71,0.28);
}
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-small { padding: 8px 16px; font-size: 0.85rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  background: linear-gradient(180deg, var(--brand-dark) 0%, var(--brand) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,0.08) 0, transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(255,255,255,0.10) 0, transparent 45%);
  pointer-events: none;
}

.navbar {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 2;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  text-decoration: none;
  color: #fff;
  letter-spacing: 0.02em;
}
.logo-dot { color: var(--brand-light); }

.nav-menu {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
  align-items: center;
}
.nav-menu a {
  text-decoration: none;
  color: rgba(255,255,255,0.88);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-menu a:hover { color: #fff; }
.nav-cta {
  background: rgba(255,255,255,0.14);
  padding: 8px 16px;
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 3;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 96px;
  position: relative;
  z-index: 2;
}
.hero-inner { max-width: 640px; }
.hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brand-light);
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 14px;
  font-weight: 800;
}
.hero-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: rgba(255,255,255,0.92);
  margin: 0 0 18px;
}
.hero-text {
  color: rgba(255,255,255,0.82);
  font-size: 1.02rem;
  margin: 0 0 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}
.hero-actions .btn-ghost {
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.hero-actions .btn-ghost:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.hero-social {
  list-style: none;
  display: flex;
  gap: 22px;
  padding: 0;
  margin: 0;
}
.hero-social a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 600;
}
.hero-social a:hover { color: #fff; }
.hero-social svg { width: 20px; height: 20px; fill: currentColor; }

/* ---------- Sections ---------- */
.section { padding: 88px 24px; }
.section-alt { background: var(--surface-alt); }
.section-inner { max-width: 1120px; margin: 0 auto; }
.section-kicker {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--brand);
  margin-bottom: 10px;
}
#experiencia .section-kicker { display: block; }
.section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 16px;
  font-weight: 800;
}
.section-lead {
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 0 40px;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 40px;
  align-items: start;
}
.about-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand) 0%, var(--accent-blue) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}
.about-body p { color: var(--text-secondary); margin: 0 0 16px; max-width: 640px; }
.about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
}
.skill-card h3 { margin: 0 0 14px; font-size: 1.02rem; }
.chip-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
}

/* ---------- Projects ---------- */
.project-featured {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
  gap: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
  margin-bottom: 28px;
  align-items: center;
}
.project-featured-image {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  overflow: hidden;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.project-featured-image img {
  display: block;
  width: 100%;
  height: clamp(220px, 32vw, 360px);
  object-fit: contain;
}
.project-featured-text h3 { margin: 8px 0 12px; font-size: 1.3rem; }
.project-featured-text p { color: var(--text-secondary); margin: 0 0 18px; }
.project-tag {
  display: inline-block;
  background: rgba(27,175,122,0.14);
  color: var(--brand);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  border-radius: 999px;
}
.tool-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 20px;
}
.tool-list li {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-blue);
  background: rgba(42,120,214,0.10);
  padding: 5px 10px;
  border-radius: 999px;
}
#map {
  height: 300px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}
.map-legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 0;
  margin: 12px 2px 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.map-legend li { display: inline-flex; align-items: center; gap: 6px; }
.map-legend .swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}
.map-caption {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 8px 2px 0;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}
.project-card h3 { margin: 10px 0 10px; font-size: 1.08rem; }
.project-card p { color: var(--text-secondary); margin: 0 0 16px; flex-grow: 0; }
.chart-wrap { margin-bottom: 18px; }
.project-card .tool-list { margin-top: auto; margin-bottom: 18px; }

/* ---------- Experience ---------- */
.exp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.exp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  border-radius: var(--radius-md);
  padding: 22px;
}
.exp-card h3 { margin: 0 0 10px; font-size: 1.02rem; }
.exp-card p { margin: 0; color: var(--text-secondary); font-size: 0.92rem; }

/* ---------- Contact ---------- */
.contact-inner { text-align: center; }
.contact-inner .section-lead { margin-left: auto; margin-right: auto; }
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 28px 24px;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-avatar { width: 100px; height: 100px; font-size: 1.4rem; }
  .project-featured { grid-template-columns: 1fr; }
  .project-featured-image img { height: 260px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: var(--brand-dark);
    padding: 16px 24px 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-menu.is-open { max-height: 320px; padding-top: 16px; }
  .nav-menu li { width: 100%; }
  .nav-menu a { display: block; padding: 10px 0; }
  .nav-cta { display: inline-block; }
}