/* =========================================================
   Juan Perrotat — Portfolio
   "The Case File" — an evidence-led developer dossier.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  /* Color: olive primary (proven), rust accent (in training), light paper base */
  --bg: oklch(98% 0.006 112);
  --surface: oklch(100% 0 0);
  --surface-2: oklch(95% 0.008 112);
  --border: oklch(88% 0.012 112);
  --border-strong: oklch(78% 0.016 112);

  --ink: oklch(22% 0.015 112);
  --muted: oklch(40% 0.02 112);
  --muted-2: oklch(46% 0.018 112);

  --primary: oklch(42% 0.13 112);
  --primary-hover: oklch(36% 0.13 112);
  --primary-soft: oklch(42% 0.13 112 / 0.1);

  --accent: oklch(46% 0.17 32);
  --accent-hover: oklch(40% 0.17 32);
  --accent-soft: oklch(46% 0.17 32 / 0.12);

  --on-color: oklch(99% 0.005 112);

  /* Type */
  --font-display: 'Archivo', 'Arial Narrow', sans-serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Courier Prime', ui-monospace, 'SFMono-Regular', monospace;

  --text-2xs: 0.75rem;
  --text-xs: 0.875rem;
  --text-base: 1rem;
  --text-lead: 1.25rem;
  --text-h3: clamp(1.375rem, 1.1rem + 1.1vw, 1.75rem);
  --text-h2: clamp(1.75rem, 1.3rem + 2.2vw, 2.5rem);
  --text-h1: clamp(2.25rem, 1.55rem + 4.2vw, 4rem);

  /* Space (4pt scale) */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 6px;

  --content-width: 72rem;
  --measure: 65ch;

  /* Motion */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 250ms;
  --dur-slow: 450ms;

  /* z-index scale */
  --z-nav: 100;
  --z-nav-menu: 110;
  --z-toast: 200;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 420;
  line-height: 1.65;
  letter-spacing: 0.01em;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-align: justify; text-wrap: pretty; hyphens: auto; }
p + p { margin-top: var(--space-sm); }

/* Respect zoom; never disable it (see meta viewport in HTML) */

/* ---------- Focus & motion safety ---------- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html { scroll-behavior: smooth; }

/* ---------- Layout primitives ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: var(--z-toast);
  background: var(--primary);
  color: var(--bg);
  padding: var(--space-2xs) var(--space-sm);
  font-weight: 600;
}
.skip-link:focus-visible {
  left: var(--space-sm);
  top: var(--space-sm);
}

.wrap {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.section {
  padding-block: clamp(3.5rem, 10vw, 7rem);
  border-bottom: 1px solid var(--border);
}
.section:last-of-type { border-bottom: 0; }

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  margin-bottom: var(--space-xl);
  max-width: 42rem;
}

.section-head h2 { font-size: var(--text-h2); }

.lede {
  color: var(--muted);
  font-size: var(--text-lead);
  max-width: var(--measure);
}

.prose { max-width: var(--measure); }
.prose p { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.8rem 1.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-xs);
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out-quart),
              background-color var(--dur-fast) var(--ease-out-quart),
              border-color var(--dur-fast) var(--ease-out-quart);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: var(--bg);
}
.btn-primary:hover { background: var(--primary-hover); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

/* External link affordance */
.ext::after {
  content: '';
  display: inline-block;
  width: 0.7em;
  height: 0.7em;
  margin-left: 0.35em;
  background-color: currentColor;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M14 3h7v7h-2V6.41l-9.29 9.3-1.42-1.42 9.3-9.29H14V3z'/%3E%3Cpath d='M5 5h6v2H7v10h10v-4h2v6H5V5z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M14 3h7v7h-2V6.41l-9.29 9.3-1.42-1.42 9.3-9.29H14V3z'/%3E%3Cpath d='M5 5h6v2H7v10h10v-4h2v6H5V5z'/%3E%3C/svg%3E");
  mask-size: contain;
  -webkit-mask-size: contain;
  vertical-align: -0.05em;
  opacity: 0.7;
}

.link {
  color: var(--primary);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease-out-quart), color var(--dur-fast) var(--ease-out-quart);
}
.link:hover { border-color: var(--primary); }

/* ---------- Tags / stamps ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: 0.02em;
  padding: 0.3em 0.65em;
  border-radius: var(--radius-sm);
  line-height: 1;
}
.tag--proven { background: var(--primary-soft); color: var(--primary); border: 1px solid color-mix(in oklch, var(--primary) 45%, transparent); }
.tag--training { background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in oklch, var(--accent) 50%, transparent); }
.tag--neutral { background: var(--surface-2); color: var(--muted); border: 1px solid var(--border-strong); }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.35em 0.85em;
  border-radius: var(--radius-sm);
  transform: rotate(-1.4deg);
}
.stamp--training { background: var(--accent); color: var(--on-color); }
.stamp--outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.verified {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--primary);
}
.verified svg { width: 1em; height: 1em; flex-shrink: 0; }

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: oklch(98% 0.006 112 / 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(1.1);
}

.nav-inner {
  max-width: var(--content-width);
  margin-inline: auto;
  padding: var(--space-sm) clamp(1.25rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
}
.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.25rem;
  height: 2px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform var(--dur-base) var(--ease-out-quart), opacity var(--dur-base) var(--ease-out-quart);
}
.nav-toggle span::before { content: ''; top: -0.4rem; transform: translateX(-50%); }
.nav-toggle span::after { content: ''; top: 0.4rem; transform: translateX(-50%); }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translate(-50%, 0.4rem) rotate(45deg); top: 0; }
.nav-toggle[aria-expanded="true"] span::after { transform: translate(-50%, -0.4rem) rotate(-45deg); top: 0; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-menu a {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--muted);
  padding: var(--space-2xs) 0;
  position: relative;
  transition: color var(--dur-fast) var(--ease-out-quart);
}
.nav-menu a:hover,
.nav-menu a[aria-current="true"] { color: var(--ink); }
.nav-menu a[aria-current="true"]::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -0.85rem;
  height: 2px;
  background: var(--primary);
}
.nav-cv {
  border: 1px solid var(--border-strong);
  padding: 0.5em 1em !important;
  border-radius: var(--radius-sm);
  color: var(--ink) !important;
}
.nav-cv:hover { border-color: var(--primary); color: var(--primary) !important; }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: fixed;
    inset: 0 0 0 30%;
    z-index: var(--z-nav-menu);
    background: var(--surface);
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-2xl) var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--dur-slow) var(--ease-out-expo);
  }
  .nav-menu[data-open="true"] { transform: translateX(0); }
  .nav-menu a { font-size: var(--text-lead); color: var(--ink); }
  .nav-menu a[aria-current="true"]::after { bottom: -0.4rem; }
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(4rem, 14vw, 9rem) clamp(3rem, 8vw, 5rem);
}
.hero-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}
.hero-title {
  font-size: var(--text-h1);
  max-width: 16ch;
}
.hero-role {
  font-size: var(--text-lead);
  color: var(--primary);
  font-weight: 600;
  margin-top: var(--space-sm);
}
.hero-thesis {
  margin-top: var(--space-md);
  font-size: var(--text-lead);
  color: var(--muted);
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  list-style: none;
}
.hero-proof li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.hero-proof li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---------- Exhibit (current assignment + general feature block) ---------- */
.exhibit {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
}
.exhibit-featured {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.exhibit-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.exhibit-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
}
.exhibit h3 { font-size: var(--text-h3); }
.exhibit-sub {
  color: var(--muted);
  font-size: var(--text-base);
  margin-top: var(--space-3xs);
}
.exhibit-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}
.exhibit-points li {
  padding-left: var(--space-md);
  position: relative;
  color: var(--ink);
}
.exhibit-points li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 6px; height: 1px;
  background: var(--primary);
}
.exhibit-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-top: var(--space-sm);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  gap: var(--space-2xl);
  align-items: start;
}
.about-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
}
.about-copy p { color: var(--ink); }
.about-copy .lede { margin-bottom: var(--space-md); }

@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-photo { max-width: 12rem; }
}

/* ---------- Tech stack ---------- */
.stack-group { margin-bottom: var(--space-2xl); }
.stack-group:last-child { margin-bottom: 0; }
.stack-group-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}
.stack-group-head h3 { font-size: var(--text-h3); }

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.tech-item {
  flex: 1 1 8.5rem;
  background: var(--surface);
  padding: var(--space-md) var(--space-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2xs);
  text-align: center;
  position: relative;
  transition: background-color var(--dur-base) var(--ease-out-quart);
}
.tech-item:hover { background: var(--surface-2); }

.tech-icon {
  width: 2rem;
  height: 2rem;
  background-color: var(--muted);
  -webkit-mask-image: var(--icon-url);
  mask-image: var(--icon-url);
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  transition: background-color var(--dur-base) var(--ease-out-quart);
}
.tech-item:hover .tech-icon { background-color: var(--primary); }
.stack-group--training .tech-item:hover .tech-icon { background-color: var(--accent); }

.tech-icon--text {
  width: 2.5rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--muted);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech-item:hover .tech-icon--text { color: var(--primary); border-color: var(--primary); }

.tech-label {
  font-size: var(--text-2xs);
  color: var(--muted);
}

.stack-group--training .tech-item::after {
  content: '';
  position: absolute;
  top: 0.6rem; right: 0.6rem;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Experience: supporting role ledger ---------- */
.role-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.role-row {
  display: grid;
  grid-template-columns: minmax(7rem, 9rem) 1fr;
  gap: var(--space-md) var(--space-lg);
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--border);
}
.role-row:last-child { border-bottom: 0; }
.role-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  padding-top: 0.2rem;
}
.role-row h3 { font-size: 1.15rem; }
.role-org {
  color: var(--muted);
  font-size: var(--text-xs);
  margin-top: 0.2rem;
}
.role-desc {
  margin-top: var(--space-xs);
  color: var(--ink);
  max-width: var(--measure);
}

@media (max-width: 640px) {
  .role-row { grid-template-columns: 1fr; gap: var(--space-2xs); }
}

/* ---------- Education ---------- */
.edu-featured {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3rem) clamp(1.5rem, 4vw, 2.5rem);
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.edu-featured .stamp {
  display: inline-flex;
  transform: none;
  border-color: var(--primary);
  color: var(--primary);
  margin-bottom: var(--space-md);
}
.edu-featured h3 {
  font-size: var(--text-h2);
  color: var(--ink);
}
.edu-featured .edu-org {
  color: var(--muted);
  font-size: var(--text-base);
  margin-top: var(--space-xs);
  text-align: center;
}
.edu-org { color: var(--muted); font-size: var(--text-xs); margin-top: 0.3rem; }
.edu-date { font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--muted); margin-top: var(--space-xs); display: block; }

.edu-origin {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}
.edu-origin p {
  color: var(--muted);
  font-size: var(--text-xs);
  max-width: var(--measure);
}

.cert-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr auto auto;
  column-gap: var(--space-md);
}
.cert-row {
  display: grid;
  grid-template-columns: subgrid;
  grid-column: 1 / -1;
  align-items: baseline;
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--border);
}
.cert-row:last-child { border-bottom: 0; }
.cert-row > .tag { justify-self: center; }
.cert-main { display: flex; flex-direction: column; gap: 0.2rem; min-width: 0; }
.cert-title { font-weight: 600; }
.cert-meta { color: var(--muted); font-size: var(--text-xs); }
.cert-date { font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--muted); white-space: nowrap; }

/* ---------- Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur-base) var(--ease-out-quart), transform var(--dur-base) var(--ease-out-quart);
}
.project-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.project-img-wrap {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-2);
}
.project-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.project-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}
.project-body h3 { font-size: 1.15rem; }
.project-desc { color: var(--muted); font-size: var(--text-xs); flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: var(--space-2xs); }
.project-links {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-2xs);
}
.project-links a { font-size: var(--text-xs); font-weight: 600; color: var(--primary); }

/* ---------- Contact ---------- */
.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xl);
  justify-content: space-between;
  align-items: flex-start;
}
.contact-channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.contact-channel {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-lead);
  font-weight: 600;
}
.contact-channel .tech-icon { width: 1.5rem; height: 1.5rem; background-color: var(--ink); }
.contact-channel:hover .tech-icon { background-color: var(--primary); }
.contact-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--muted);
  max-width: 24rem;
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: var(--space-lg);
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--text-2xs);
  color: var(--muted-2);
}

/* ---------- Reveal-on-scroll ---------- */
[data-reveal] {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--dur-slow) var(--ease-out-quart), transform var(--dur-slow) var(--ease-out-quart);
  }
  [data-reveal].is-visible {
    opacity: 1;
    transform: none;
  }
  [data-reveal-group] > * {
    transition-delay: calc(var(--i, 0) * 70ms);
  }
}

.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .hero-proof { gap: var(--space-md); }
  .exhibit-head { flex-direction: column; align-items: flex-start; }
  .contact-grid { flex-direction: column; }

  .cert-list { grid-template-columns: 1fr; }
  .cert-row {
    grid-template-columns: 1fr;
    align-items: flex-start;
    gap: 0.4rem;
  }
}