/* ==========================================================================
   Nelson Figueiredo — Portfolio
   Tokens: deep navy field, orange signal, lavender-grey grid,
   Space Grotesk (display) + Inter (body) + JetBrains Mono (labels/data)
   ========================================================================== */

:root{
  --navy-900: #0a0f17;
  --navy-800: #0f1823;
  --navy-700: #142a38;
  --navy-600: #1a3a4a;
  --border: rgba(201, 199, 240, 0.12);
  --border-soft: rgba(201, 199, 240, 0.07);

  --orange: #2FA99A;
  --orange-soft: #A3E4D9;
  --orange-dim: rgba(47, 169, 154, 0.16);

  --lavender: #c9c7f0;
  --lavender-dim: rgba(201, 199, 240, 0.35);

  --text: #f3f2fb;
  --text-muted: #9aa5c2;
  --text-faint: #6c7796;

  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --maxw: 1120px;
  --radius: 14px;
}

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

html{ scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin: 0;
  background: var(--navy-900);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

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

/* subtle grain overlay for depth */
.grain{
  position: fixed; inset: 0; pointer-events: none; z-index: 500;
  opacity: 0.035; mix-blend-mode: overlay;
  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' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ==========================================================================
   Nav
   ========================================================================== */
.nav{
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px clamp(20px, 5vw, 64px);
  background: rgba(6, 15, 31, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.nav__mark{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.nav__mark-grid{
  display: inline-grid; grid-template-columns: repeat(2, 6px); grid-template-rows: repeat(2, 6px);
  gap: 2px;
}
.nav__mark-grid i{ background: var(--orange); border-radius: 1px; }
.nav__mark-grid i:nth-child(3){ background: var(--lavender); }

.nav__links{ display: flex; align-items: center; gap: clamp(16px, 2.4vw, 32px); }
.nav__links a{
  font-size: 0.92rem; color: var(--text-muted); transition: color 0.2s ease;
}
.nav__links a:hover{ color: var(--text); }
.nav__cta{
  color: var(--navy-900) !important;
  background: var(--orange);
  padding: 8px 16px; border-radius: 999px;
  font-weight: 600;
}
.nav__cta:hover{ background: var(--orange-soft); color: var(--navy-900) !important; }

.nav__burger{ display: none; background: none; border: 0; padding: 6px; cursor: pointer; }
.nav__burger span{ display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; }

/* Language switch */
.lang-switch{
  display: inline-flex; align-items: center; gap: 2px;
  border: 1px solid var(--border); border-radius: 999px; padding: 3px;
  margin-left: clamp(8px, 2vw, 24px);
  font-family: var(--font-mono);
}
.lang-switch__btn{
  background: none; border: 0; cursor: pointer;
  font-family: var(--font-mono); font-size: 0.74rem; font-weight: 500;
  letter-spacing: 0.04em; color: var(--text-faint);
  padding: 5px 11px; border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}
.lang-switch__btn:hover{ color: var(--text); }
.lang-switch__btn.is-active{ background: var(--orange); color: var(--navy-900); }

@media (max-width: 760px){
  .lang-switch{ margin-left: auto; margin-right: 10px; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  padding: 80px clamp(20px, 6vw, 64px) 100px;
  overflow: hidden;
  background:
    var(--navy-900);
}

.hero__arc{
  position: absolute; left: -18vw; bottom: -30vw;
  width: 55vw; height: 55vw; border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, var(--navy-700), transparent 70%);
  opacity: 0.8; pointer-events: none;
}

.hero__inner{ position: relative; z-index: 2; max-width: 760px; }

.eyebrow{
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em;
  color: var(--orange); text-transform: uppercase; margin-bottom: 20px;
}

.hero__title{
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  font-weight: 700; line-height: 0.98; color: var(--text);
}

.hero__tagline{
  font-family: var(--font-mono); color: var(--lavender);
  font-size: 0.95rem; letter-spacing: 0.06em;
  margin-top: 22px;
}

.hero__lede{
  margin-top: 22px; max-width: 560px;
  font-size: 1.08rem; color: var(--text-muted);
}

.hero__actions{ display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px;
  font-family: var(--font-body); font-weight: 600; font-size: 0.94rem;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn--primary{ background: var(--orange); color: var(--navy-900); }
.btn--primary:hover{ background: var(--orange-soft); transform: translateY(-1px); }
.btn--ghost{ border: 1px solid var(--border); color: var(--text); }
.btn--ghost:hover{ border-color: var(--lavender-dim); transform: translateY(-1px); }

.hero__social{
  margin-top: 40px; font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-faint);
}
.hero__social a{ color: var(--text-muted); }
.hero__social a:hover{ color: var(--orange-soft); }
.hero__social .dot{ margin: 0 10px; }

/* ==========================================================================
   Sections
   ========================================================================== */
.section{ padding: 110px clamp(20px, 6vw, 64px); }
.section--alt{ background: var(--navy-800); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.section__inner{ max-width: var(--maxw); margin: 0 auto; position: relative; }

.section__eyebrow{
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em;
  color: var(--orange); text-transform: uppercase; margin-bottom: 16px;
}

.section__title{
  font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 600; color: var(--text);
  margin-bottom: 28px; max-width: 760px;
}

.section__intro{
  color: var(--text-muted); max-width: 640px; margin-bottom: 44px; font-size: 1.02rem;
}

/* Sobre */
.about{ max-width: 700px; display: flex; flex-direction: column; gap: 18px; }
.about__lead{ font-size: 1.2rem; color: var(--text); }
.about p:not(.about__lead){ color: var(--text-muted); }

.whyfin{
  margin-top: 64px; display: grid; grid-template-columns: 160px 1fr; gap: 40px; align-items: start;
  padding: 32px; border: 1px solid var(--border); border-radius: var(--radius);
  background: linear-gradient(135deg, var(--navy-700), transparent);
}
.whyfin__grid{ display: flex; align-items: center; justify-content: center; padding-top: 6px; }
.whyfin__text h3{ font-size: 1.3rem; margin-bottom: 12px; color: var(--text); }
.whyfin__text p{ color: var(--text-muted); }

@media (max-width: 640px){
  .whyfin{ grid-template-columns: 1fr; }
  .whyfin__grid{ justify-content: flex-start; }
}

/* mini animated data-grid used as signature motif */
.mini-grid{
  display: grid; grid-template-columns: repeat(5, 12px); grid-template-rows: repeat(5, 12px); gap: 4px;
}
.mini-grid i{ display: block; width: 12px; height: 12px; border-radius: 2px; background: var(--border); }

/* Competências */
.skills{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px){ .skills{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .skills{ grid-template-columns: 1fr; } }

.skill-card{
  padding: 26px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--navy-700);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.skill-card:hover{ border-color: var(--orange); transform: translateY(-3px); }
.skill-card__grid{
  display: inline-grid; grid-template-columns: repeat(2, 8px); grid-template-rows: repeat(2, 8px); gap: 3px;
  margin-bottom: 16px;
}
.skill-card__grid i{ background: var(--lavender); border-radius: 1px; opacity: 0.8; }
.skill-card__grid i:nth-child(1){ background: var(--orange); }
.skill-card h4{ font-size: 1.02rem; color: var(--text); margin-bottom: 8px; }
.skill-card p{ color: var(--text-muted); font-size: 0.92rem; line-height: 1.55; }

/* Timeline */
.timeline{ display: flex; flex-direction: column; gap: 0; max-width: 760px; }
.timeline__item{
  display: grid; grid-template-columns: 20px 1fr; gap: 24px;
  padding-bottom: 44px; position: relative;
}
.timeline__item:not(:last-child)::before{
  content: ""; position: absolute; left: 9px; top: 22px; bottom: 0;
  width: 1px; background: var(--border);
}
.timeline__marker{
  width: 20px; height: 20px; border-radius: 5px;
  background: var(--orange-dim); border: 1px solid var(--orange);
  margin-top: 2px;
}
.timeline__period{
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--orange);
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px;
}
.timeline__content h4{ font-size: 1.12rem; color: var(--text); margin-bottom: 10px; }
.timeline__content p{ color: var(--text-muted); max-width: 640px; }

/* Projectos actuais */
.projects{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 760px){ .projects{ grid-template-columns: 1fr; } }

.project-card{
  padding: 30px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--navy-900);
}
.project-card__tag{
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  color: var(--lavender); text-transform: uppercase;
}
.project-card h4{ font-size: 1.2rem; color: var(--text); margin: 14px 0 12px; }
.project-card p{ color: var(--text-muted); font-size: 0.95rem; }
.project-card__stack{ display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.project-card__stack span{
  font-family: var(--font-mono); font-size: 0.74rem; padding: 5px 10px;
  border-radius: 999px; border: 1px solid var(--border); color: var(--text-muted);
}

/* Roteiro (roadmap) */
.roadmap{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 940px){ .roadmap{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px){ .roadmap{ grid-template-columns: 1fr; } }

.roadmap-card{
  padding: 28px; border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--navy-700) 0%, var(--navy-800) 100%);
  position: relative; overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.roadmap-card:hover{ border-color: var(--orange); transform: translateY(-3px); }
.roadmap-card__num{
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--orange-soft);
  letter-spacing: 0.1em; margin-bottom: 14px;
}
.roadmap-card h4{ font-size: 1.08rem; color: var(--text); margin-bottom: 12px; line-height: 1.3; }
.roadmap-card p{ color: var(--text-muted); font-size: 0.9rem; margin-bottom: 18px; }
.roadmap-card__stack{ display: flex; flex-wrap: wrap; gap: 6px; }
.roadmap-card__stack span{
  font-family: var(--font-mono); font-size: 0.7rem; padding: 4px 9px;
  border-radius: 999px; background: var(--orange-dim); color: var(--orange-soft);
}

/* Contacto */
.section--contact{ position: relative; }
.contact-grid{
  position: absolute; top: 0; right: 0; display: grid;
  grid-template-columns: repeat(6, 10px); grid-template-rows: repeat(6, 10px); gap: 4px;
  opacity: 0.5;
}
.contact-grid::before{ content: ""; } /* placeholder, filled by JS */
.contact__title{ max-width: 620px; }
.contact__links{ display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.contact__secondary{
  margin-top: 28px; display: flex; gap: 22px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted);
}
.contact__secondary a:hover{ color: var(--orange-soft); }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer{ padding: 40px clamp(20px, 6vw, 64px) 60px; border-top: 1px solid var(--border-soft); }
.footer__inner{
  max-width: var(--maxw); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px;
}
.footer__mark{ display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; }
.footer p{ color: var(--text-faint); font-size: 0.85rem; }
.footer__top{ color: var(--text-muted); font-size: 0.85rem; }
.footer__top:hover{ color: var(--orange-soft); }

/* ==========================================================================
   Grid pattern squares (populated via JS) + reveal animation
   ========================================================================== */
.sq{ animation: pulse 3.4s ease-in-out infinite; }
@keyframes pulse{
  0%, 100%{ opacity: 0.35; }
  50%{ opacity: 1; }
}

.reveal{ opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* Mobile nav */
@media (max-width: 760px){
  .nav__links{
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: flex-start;
    background: var(--navy-800); padding: 24px clamp(20px, 6vw, 64px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%); opacity: 0; transition: transform 0.25s ease, opacity 0.25s ease;
    gap: 18px;
  }
  .nav__links.is-open{ transform: translateY(0); opacity: 1; }
  .nav__burger{ display: block; }
}

:focus-visible{ outline: 2px solid var(--orange); outline-offset: 3px; }