/* ─── tokens ─────────────────────────────────────────── */
:root {
  --accent:       #f97316;
  --accent-dim:   rgba(249,115,22,.12);
  --accent-glow:  rgba(249,115,22,.25);
  --radius:       6px;
  --nav-h:        64px;
  --col-label:    180px;
  --transition:   .3s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --bg:           #0b0e1a;
  --bg-2:         #111422;
  --bg-3:         #181c2e;
  --border:       rgba(255,255,255,.07);
  --text:         #dde1ef;
  --text-muted:   #6b7399;
  --text-strong:  #ffffff;
  --tag-bg:       rgba(255,255,255,.06);
  --tag-border:   rgba(255,255,255,.1);
  --shadow:       0 4px 24px rgba(0,0,0,.5);
}

[data-theme="light"] {
  --bg:           #f8f7f4;
  --bg-2:         #ffffff;
  --bg-3:         #f0ede8;
  --border:       rgba(0,0,0,.08);
  --text:         #3a3d4d;
  --text-muted:   #8a8fa8;
  --text-strong:  #0b0e1a;
  --tag-bg:       rgba(0,0,0,.05);
  --tag-border:   rgba(0,0,0,.1);
  --shadow:       0 4px 24px rgba(0,0,0,.08);
}

/* ─── reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Figtree', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  /* subtle noise texture */
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── nav ────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  transition: background var(--transition);
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: .05em;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-strong);
  background: var(--bg-3);
}
.nav-links a.active { color: var(--accent); }

.nav-right { display: flex; align-items: center; gap: 16px; }

/* theme toggle */
.theme-toggle {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.theme-toggle button {
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background var(--transition);
  color: var(--text-muted);
}
.theme-toggle button.active {
  background: var(--accent);
  color: white;
}

/* language slide toggle */
.lang-toggle {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  cursor: pointer;
  width: 80px;
  height: 32px;
  border-radius: 16px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  padding: 0;
  user-select: none;
}
.lang-label {
  flex: 1;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--text-muted);
  transition: color var(--transition);
  z-index: 1;
  pointer-events: none;
}
.lang-label.active {
  color: var(--text-strong);
}
.lang-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  overflow: hidden;
  transition: transform var(--transition);
  box-shadow: 0 1px 4px rgba(0,0,0,.25);
  z-index: 2;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--lang-thumb-bg, #fff);
}
[data-theme="dark"] .lang-thumb {
  --lang-thumb-bg: #1a1a2e;
}
.lang-toggle[data-lang="es"] .lang-thumb {
  transform: translateX(48px);
}
.lang-flag {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ─── layout ─────────────────────────────────────────── */
main { max-width: 1000px; margin: 0 auto; padding: 0 48px 120px; }

section { padding: 80px 0; border-bottom: 1px solid var(--border); }
section:last-child { border-bottom: none; }

.section-inner {
  display: grid;
  grid-template-columns: var(--col-label) 1fr;
  gap: 0 48px;
}

.section-label {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 4px;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  align-self: start;
}

.section-body { min-width: 0; }

/* ─── hero ───────────────────────────────────────────── */
#home { padding-top: 40px; }

.hero-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: .1em;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp .6s .1s forwards;
}

h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--text-strong);
  letter-spacing: -.02em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp .6s .2s forwards;
}

h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-bio {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
  max-width: 640px;
  opacity: 0;
  animation: fadeUp .6s .3s forwards;
}

.hero-bio p + p { margin-top: 16px; }

.hero-bio strong {
  color: var(--text-strong);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 36px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp .6s .4s forwards;
}

.btn {
  font-family: 'Syne', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #ea6a00;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--bg-3);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-2);
  color: var(--text-strong);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-icon {
  width: 1.1em;
  height: 1.1em;
  fill: currentColor;
  flex-shrink: 0;
}

/* ─── skills ─────────────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.skill-group h3 {
  font-family: 'Syne', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.skill-group ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-group li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  letter-spacing: .02em;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
}
.skill-group li:hover {
  color: var(--accent);
  background: var(--accent-dim);
  border-color: var(--accent);
}

/* ─── featured project ───────────────────────────────── */
.featured-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.featured-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow);
}
.featured-card::before {
  content: attr(data-featured-label);
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--accent-glow);
}

.project-title {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.project-title a {
  color: var(--text-strong);
  transition: color var(--transition);
}
.project-title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.project-arrow {
  color: var(--text-muted);
  font-size: 18px;
  transition: transform var(--transition), color var(--transition);
  display: inline-block;
}
.project-title:hover .project-arrow,
a:hover .project-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

.project-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.project-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 20px;
}
.project-desc p + p { margin-top: 12px; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: .03em;
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
}
.tag:hover {
  color: var(--accent);
  background: var(--accent-dim);
  border-color: var(--accent);
}

/* ─── projects list ──────────────────────────────────── */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 32px;
}

.project-row {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
  transition: background var(--transition);
  cursor: default;
}
.project-row:last-child { border-bottom: none; }
.project-row:hover { background: var(--accent-dim); margin: 0 -20px; padding: 28px 20px; border-radius: var(--radius); border-bottom-color: transparent; }

.project-row-title {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-row-title a {
  color: var(--text-strong);
  text-decoration: none;
  transition: color var(--transition);
}
.project-row-title a:hover { color: var(--accent); }

.project-row-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.project-row-tags { display: flex; flex-wrap: wrap; gap: 6px; }

/* ─── experience ─────────────────────────────────────── */
.exp-list { display: flex; flex-direction: column; gap: 0; }

.exp-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 16px;
  align-items: start;
}
.exp-item:last-child { border-bottom: none; }

.exp-company {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 2px;
}

.exp-role {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.exp-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

.exp-extras { margin-top: 14px; display: flex; flex-direction: column; gap: 14px; }

.exp-extras-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
  opacity: .6;
}

.exp-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.exp-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.exp-highlights li {
  font-size: 13px;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.5;
}
.exp-highlights li::before {
  content: '\25B8';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 11px;
  top: 2px;
}

.exp-dates {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
  white-space: nowrap;
  padding-top: 3px;
}

.exp-badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .08em;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent-glow);
  margin-left: 8px;
  vertical-align: middle;
}

/* ─── contact ────────────────────────────────────────── */
.contact-block {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px;
  text-align: center;
}

.contact-block h2 {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-strong);
  margin-bottom: 12px;
  letter-spacing: -.02em;
}

.contact-block p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 32px;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ─── divider ────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
  margin: 0;
}

/* ─── footer ─────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 40px 48px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ─── animations ─────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ─── responsive ─────────────────────────────────────── */
@media (max-width: 720px) {
  nav { padding: 0 20px; }
  main { padding: 0 20px 80px; }

  .section-inner {
    grid-template-columns: 1fr;
    gap: 20px 0;
  }
  .section-label { position: static; }

  .exp-item {
    grid-template-columns: 1fr;
  }
  .exp-dates { text-align: left; }

  .contact-block { padding: 32px 24px; }

  .nav-links { display: none; }
}