/* ============================================================
   PortfolioHUB · Lucca Mariz
   Estilos · Dark tech moderno · Mobile-first
   ============================================================ */

:root {
  /* Cores */
  --bg:          #0b0d12;
  --bg-soft:     #0f121a;
  --bg-elev:     #141821;
  --bg-elev-2:   #1c2230;
  --border:      #252b3a;
  --border-soft: #1c212e;

  --text:        #e6e9ef;
  --text-mid:    #b6bccc;
  --text-dim:    #8a93a6;

  --accent:      #6c8cff;
  --accent-2:    #22d3ee;
  --accent-glow: rgba(108, 140, 255, 0.35);

  --success:     #4ade80;
  --warning:     #fbbf24;
  --danger:      #f87171;

  /* Tokens */
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg:   0 20px 50px rgba(0, 0, 0, 0.55);

  --fs-mono:     'JetBrains Mono', ui-monospace, 'Cascadia Mono', Menlo, monospace;
  --fs-sans:     'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--fs-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3 {
  margin: 0 0 0.5em;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1rem; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover { color: var(--accent-2); }

ul { margin: 0; padding: 0; list-style: none; }

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

button {
  font: inherit;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: inherit;
}

/* ===================== Layout =================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--accent);
  color: #000;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
}

/* ===================== Topbar =================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 18, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.topbar__inner {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--text); }
.brand__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}

.nav { display: none; }
.nav a {
  color: var(--text-mid);
  font-size: 0.95rem;
  padding: 0.4rem 0.6rem;
}
.nav a:hover { color: var(--text); }

.nav-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-mid);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-soft);
  background: var(--bg-soft);
}
.nav-mobile a {
  color: var(--text-mid);
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-soft);
}
.nav-mobile a:hover { color: var(--text); background: var(--bg-elev); }

/* ===================== Hero =================== */
.hero {
  position: relative;
  padding: 4rem 0 3rem;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(108, 140, 255, 0.18), transparent 50%),
    radial-gradient(circle at 85% 60%, rgba(34, 211, 238, 0.12), transparent 55%);
  pointer-events: none;
  z-index: 0;
}
.hero__inner { position: relative; z-index: 1; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-dim);
  font-family: var(--fs-mono);
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 99px;
  margin-bottom: 1.5rem;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
}
.dot--success {
  background: var(--success);
  box-shadow: 0 0 10px rgba(74, 222, 128, 0.55);
}

.hero__title {
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  max-width: 850px;
  margin: 0 0 1.25rem;
}
.hero__name {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__highlight {
  color: var(--accent);
  position: relative;
}
.hero__highlight::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.hero__lede {
  font-size: 1.1rem;
  color: var(--text-mid);
  max-width: 620px;
  margin: 0 0 2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--accent);
  color: #0a0c10;
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn--primary:hover { background: var(--accent-2); color: #0a0c10; }
.btn--ghost {
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-soft);
}
.hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.hero__stats strong {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.hero__stats span {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--fs-mono);
}

/* ===================== Section base =================== */
.section {
  padding: 4rem 0;
}
.section--alt {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

.section__header {
  max-width: 720px;
  margin-bottom: 2.5rem;
}
.section__header--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section__tag {
  font-family: var(--fs-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: lowercase;
  letter-spacing: 0.05em;
}
.section__title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 700;
  margin: 0.5rem 0;
}
.section__lede {
  color: var(--text-mid);
  font-size: 1.05rem;
  margin: 0;
}

/* ===================== Cards de Projetos =================== */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}
.card__badge {
  font-family: var(--fs-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 99px;
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card__badge--academico {
  color: var(--accent);
  background: rgba(108, 140, 255, 0.08);
  border-color: rgba(108, 140, 255, 0.25);
}
.card__badge--pessoal {
  color: var(--accent-2);
  background: rgba(34, 211, 238, 0.08);
  border-color: rgba(34, 211, 238, 0.25);
}
.card__num {
  font-family: var(--fs-mono);
  color: var(--text-dim);
  font-size: 0.95rem;
}
.card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.card__desc {
  color: var(--text-mid);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}
.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}
.card__tags li {
  font-family: var(--fs-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  background: var(--bg-elev-2);
  color: var(--text-mid);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
}
.card__actions { margin-top: auto; }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
}
.link-arrow span {
  transition: transform 0.2s ease;
  display: inline-block;
}
.link-arrow:hover span { transform: translateX(4px); }

/* ===================== Sobre =================== */
.sobre__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.sobre__texto p { color: var(--text-mid); font-size: 1rem; }
.sobre__texto strong { color: var(--text); }
.sobre__quick {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.sobre__quick h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  font-family: var(--fs-mono);
  margin-top: 1rem;
  margin-bottom: 0.4rem;
}
.sobre__quick h3:first-child { margin-top: 0; }
.sobre__quick p { color: var(--text); font-size: 0.95rem; margin: 0; }

/* ===================== Stack =================== */
.stack-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.stack__group {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}
.stack__group h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-family: var(--fs-mono);
  margin: 0 0 0.75rem;
}
.stack__group ul { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.stack__group li {
  font-size: 0.9rem;
  padding: 0.3rem 0.75rem;
  background: var(--bg-elev-2);
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  border: 1px solid var(--border-soft);
}

/* ===================== Contato =================== */
.contato__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}
.contato__link {
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 0.25rem 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.contato__link:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--text);
}
.contato__icon {
  grid-row: 1 / span 2;
  width: 48px; height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elev-2);
  border-radius: var(--radius-sm);
  font-family: var(--fs-mono);
  color: var(--accent);
  font-size: 1.1rem;
  font-weight: 700;
}
.contato__rotulo {
  font-family: var(--fs-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.contato__valor { font-weight: 600; word-break: break-all; }

/* ===================== Rodapé =================== */
.rodape {
  padding: 2rem 0;
  border-top: 1px solid var(--border-soft);
  background: var(--bg);
}
.rodape__inner {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  align-items: center;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.rodape__release { font-family: var(--fs-mono); }

/* ============================================================
   Responsivo
   ============================================================ */

/* Tablet ≥ 640px */
@media (min-width: 640px) {
  .cards-grid    { grid-template-columns: repeat(2, 1fr); }
  .stack-grid    { grid-template-columns: repeat(2, 1fr); }
  .contato__links{ grid-template-columns: repeat(2, 1fr); }
}

/* Desktop ≥ 1024px */
@media (min-width: 1024px) {
  .nav         { display: inline-flex; gap: 0.4rem; }
  .nav-toggle  { display: none; }
  .nav-mobile  { display: none !important; }

  .hero        { padding: 6rem 0 5rem; }
  .section     { padding: 6rem 0; }

  .cards-grid  { grid-template-columns: repeat(3, 1fr); }
  .stack-grid  { grid-template-columns: repeat(4, 1fr); }
  .contato__links { grid-template-columns: repeat(3, 1fr); }

  .sobre__grid {
    grid-template-columns: 1.6fr 1fr;
    gap: 3rem;
  }

  .rodape__inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Animação reduzida para usuários sensíveis */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}