/* ============================================================
   Joaquim Peixoto — portfolio
   Aesthetic: dark engineering-ledger / editorial
   Ink background · warm cream type · burnt-orange accent
   Fraunces (display serif) + IBM Plex Mono (labels/data)
   ============================================================ */

:root {
  --ink: #0d0e10;
  --ink-2: #131417;
  --line: rgba(240, 234, 222, 0.14);
  --line-soft: rgba(240, 234, 222, 0.08);
  --cream: #f0eade;
  --cream-dim: rgba(240, 234, 222, 0.62);
  --cream-faint: rgba(240, 234, 222, 0.38);
  --accent: #ff5a1f;
  --accent-soft: rgba(255, 90, 31, 0.12);
  --serif: "Fraunces", "Georgia", serif;
  --mono: "IBM Plex Mono", "Menlo", monospace;
  --pad: clamp(1.25rem, 5vw, 5rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--cream);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--ink); }

em { font-style: italic; }
.accent { color: var(--accent); }

a { color: inherit; }

/* ---- grain overlay ---- */
.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 9s steps(6) infinite;
}
@keyframes grain-shift {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -2%); }
  80% { transform: translate(3%, 3%); }
}

/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1rem var(--pad);
  border-bottom: 1px solid var(--line-soft);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav__brand {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav__brand-dot { color: var(--accent); font-size: 0.6em; vertical-align: middle; margin-left: 2px; }
.nav__links {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}
.nav__links a {
  text-decoration: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--cream-dim);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--accent); }
.nav__cta {
  text-decoration: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}
.nav__cta:hover { background: var(--accent); color: var(--ink); }

/* ============ HERO ============ */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 7rem var(--pad) 4rem;
  position: relative;
  background:
    radial-gradient(ellipse 60% 45% at 78% 18%, rgba(255, 90, 31, 0.09), transparent 65%),
    radial-gradient(ellipse 50% 40% at 12% 85%, rgba(255, 90, 31, 0.05), transparent 60%);
}
.hero__portrait {
  position: absolute;
  top: clamp(5.5rem, 12vh, 8rem);
  right: var(--pad);
  width: clamp(200px, 23vw, 360px);
  z-index: 1;
}
.hero__portrait img {
  display: block;
  width: 100%;
  height: auto;
  filter: grayscale(1) contrast(1.05);
  border: 1px solid var(--line);
}
.hero__portrait::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  aspect-ratio: 974 / 1218;
  transform: translate(14px, 14px);
  border: 1px solid var(--accent);
  opacity: 0.55;
  z-index: -1;
}
.hero__portrait figcaption {
  margin-top: 0.8rem;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--cream-faint);
}
.hero__title, .hero__kicker { position: relative; z-index: 2; }

.hero__kicker {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--cream-dim);
  margin-bottom: clamp(1.5rem, 3vh, 3rem);
}
.tick { color: var(--accent); }
.hero__title {
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(3rem, 9.5vw, 8.5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.hero__line { display: block; }
.hero__line--indent { padding-left: clamp(1rem, 8vw, 9rem); }
.hero__title em { font-weight: 420; }
.hero__foot {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 3rem;
  margin-top: clamp(2.5rem, 6vh, 5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.hero__intro { color: var(--cream-dim); max-width: 56ch; }
.hero__intro strong { color: var(--cream); font-weight: 500; }
.hero__meta { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; font-size: 0.82rem; }
.hero__meta span {
  display: inline-block;
  min-width: 4.5rem;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  right: var(--pad);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--cream-faint);
}
.hero__scroll-line {
  display: block;
  width: 3.5rem;
  height: 1px;
  background: var(--cream-faint);
  transform-origin: left;
  animation: scroll-pulse 2.2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%, 100% { transform: scaleX(0.4); opacity: 0.5; }
  50% { transform: scaleX(1); opacity: 1; }
}

/* load-in reveal */
.reveal-load {
  opacity: 0;
  transform: translateY(24px);
  animation: rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: calc(var(--d, 0) * 130ms + 100ms);
}
@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

/* ============ MARQUEE ============ */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
  background: var(--ink-2);
}
.marquee__track {
  display: flex;
  white-space: nowrap;
  width: max-content;
  animation: marquee 36s linear infinite;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--cream-faint);
}
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ============ SECTIONS ============ */
.section {
  padding: clamp(4rem, 10vh, 8rem) var(--pad);
  border-bottom: 1px solid var(--line-soft);
}
.section__head { margin-bottom: clamp(2.5rem, 6vh, 4.5rem); position: relative; }
.section__index {
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.2em;
}
.section__head h2 {
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  letter-spacing: -0.015em;
  margin-top: 0.5rem;
}
.section__sub { color: var(--cream-dim); max-width: 52ch; margin-top: 0.9rem; }

/* ---- products ---- */
.product {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  margin-bottom: 1.5rem;
  background: var(--ink-2);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}
.product::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}
.product:hover { border-color: rgba(255, 90, 31, 0.45); }
.product:hover::before { opacity: 1; }
.product__head {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.product__name {
  font-family: var(--serif);
  font-weight: 460;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.01em;
}
.product__link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.product__link:hover { border-color: var(--accent); }
.product__period { margin-left: auto; font-size: 0.78rem; color: var(--cream-faint); }
.product__tag {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}
.product__body { margin-top: 1.5rem; }
.product__points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  color: var(--cream-dim);
  max-width: 78ch;
}
.product__points li { padding-left: 1.4rem; position: relative; }
.product__points li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.6em;
  top: 0.55em;
}
.product__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.6rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--line);
}
.product__stack span {
  font-size: 0.72rem;
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--cream-dim);
}

/* ---- timeline ---- */
.timeline { list-style: none; }
.timeline__item {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 2rem;
  padding: 1.9rem 0;
  border-top: 1px solid var(--line-soft);
  position: relative;
}
.timeline__item:last-child { border-bottom: 1px solid var(--line-soft); }
.timeline__when {
  font-size: 0.78rem;
  color: var(--cream-faint);
  letter-spacing: 0.06em;
  padding-top: 0.35rem;
}
.timeline__what h3 {
  font-family: var(--serif);
  font-weight: 460;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}
.timeline__co { color: var(--accent); font-weight: 340; }
.timeline__where {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--cream-faint);
  margin: 0.35rem 0 0.7rem;
}
.timeline__what p:last-child { color: var(--cream-dim); max-width: 74ch; }
.timeline__item::after {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.timeline__item:hover::after { width: 100%; }

/* ---- skills ---- */
.skills { border-top: 1px solid var(--line); }
.skills__row {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: baseline;
}
.skills__row h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--cream-dim);
  font-weight: 500;
}
.skills__row p { color: var(--cream); }
.skills__row--accent h3 { color: var(--accent); }
.skills__row--accent { background: linear-gradient(90deg, var(--accent-soft), transparent 55%); padding-left: 0.75rem; margin-left: -0.75rem; }

.edu {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
  margin-top: clamp(3rem, 7vh, 5rem);
}
.edu__title {
  font-family: var(--serif);
  font-weight: 460;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.edu ul { list-style: none; display: flex; flex-direction: column; gap: 1.1rem; }
.edu li strong { display: block; font-weight: 500; }
.edu li span { color: var(--cream-faint); font-size: 0.82rem; }

/* ============ CONTACT ============ */
.contact {
  padding: clamp(5rem, 14vh, 10rem) var(--pad);
  text-align: center;
  background:
    radial-gradient(ellipse 55% 55% at 50% 100%, rgba(255, 90, 31, 0.1), transparent 70%);
}
.contact__kicker {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.contact__title {
  font-family: var(--serif);
  font-weight: 340;
  font-size: clamp(2.4rem, 6.5vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.contact__email {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: clamp(1rem, 2.4vw, 1.5rem);
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 0.2rem;
  transition: opacity 0.2s;
}
.contact__email:hover { opacity: 0.75; }
.contact__links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}
.contact__links a {
  text-decoration: none;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--cream-dim);
  transition: color 0.2s;
}
.contact__links a:hover { color: var(--accent); }

/* ============ FOOTER ============ */
.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.5rem var(--pad);
  border-top: 1px solid var(--line-soft);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--cream-faint);
}

/* ============ scroll reveal ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-load { opacity: 1; transform: none; animation: none; transition: none; }
  .marquee__track, .grain, .hero__scroll-line { animation: none; }
}

/* ============ responsive ============ */
@media (max-width: 820px) {
  .nav__links { display: none; }
  .hero__portrait {
    position: static;
    width: min(68vw, 320px);
    margin: 0 0 2rem;
    order: -1;
  }
  .hero { padding-top: 6.5rem; }
  .hero__foot { grid-template-columns: 1fr; gap: 2rem; }
  .timeline__item, .skills__row { grid-template-columns: 1fr; gap: 0.5rem; }
  .edu { grid-template-columns: 1fr; }
  .product__period { margin-left: 0; width: 100%; }
  .hero__scroll { display: none; }
}