/* ==========================================================================
   TOKENS
   ========================================================================== */
:root {
  /* paleta — Mercedes-AMG Petronas F1 */
  --c-black:        #0A0E12;
  --c-black-soft:   #10151B;
  --c-panel:        #141A21;
  --c-line:         #232B33;
  --c-silver:       #C4CBD1;
  --c-silver-dim:   #6E7881;
  --c-white:        #F5F7F8;
  --c-teal:         #00A19B;
  --c-teal-dim:     #00A0DC33;
  --c-teal-glow:    #35C4F0;

  --font-display: "Barlow Condensed", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --container: 1120px;
  --radius: 2px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

/* ==========================================================================
   RESET
   ========================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--c-black);
  color: var(--c-silver);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

::selection { background: var(--c-teal); color: var(--c-black); }

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

/* ==========================================================================
   UTILITÁRIOS
   ========================================================================== */
.section__inner, .header__inner, .hero__inner, .footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: 28px;
}

.section { padding: 120px 0; border-bottom: 1px solid var(--c-line); }
.section--alt { background: var(--c-black-soft); }

.section__head { margin-bottom: 56px; }

.section__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 14px;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4.5vw, 48px);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--c-white);
}

/* ==========================================================================
   SCROLL PROGRESS BAR
   ========================================================================== */
.scroll-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--c-teal), var(--c-teal-glow));
  z-index: 999;
  transition: width 0.1s linear;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(10, 14, 18, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-line);
  transition: transform 0.4s var(--ease);
}
.header.header--hidden { transform: translateY(-100%); }

.header__inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--c-white);
}
.header__logo .dot { color: var(--c-teal); }

.header__nav {
  display: flex;
  align-items: center;
  gap: 36px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-silver);
}
.header__nav a { position: relative; padding: 4px 0; transition: color 0.25s; }
.header__nav a:not(.header__cta):hover { color: var(--c-white); }
.header__nav a:not(.header__cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--c-teal);
  transition: width 0.25s var(--ease);
}
.header__nav a:not(.header__cta):hover::after { width: 100%; }

.header__cta {
  border: 1px solid var(--c-teal);
  color: var(--c-teal) !important;
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: background 0.25s, color 0.25s;
}
.header__cta:hover { background: var(--c-teal); color: var(--c-black) !important; }

.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
}
.header__burger span {
  height: 2px;
  background: var(--c-white);
  width: 100%;
  transition: transform 0.3s, opacity 0.3s;
}
.header__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__burger.is-open span:nth-child(2) { opacity: 0; }
.header__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.header__mobile {
  display: none;
  flex-direction: column;
  background: var(--c-black-soft);
  border-top: 1px solid var(--c-line);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s var(--ease);
}
.header__mobile.is-open { max-height: 300px; }
.header__mobile a {
  padding: 16px 28px;
  border-bottom: 1px solid var(--c-line);
  font-size: 15px;
  font-weight: 500;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 60% 40%, black 10%, transparent 75%);
  opacity: 0.55;
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 90px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-silver-dim);
  margin-bottom: 28px;
}
.eyebrow__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-teal);
  box-shadow: 0 0 0 0 rgba(0,160,220,0.6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0,160,220,0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(0,160,220,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,160,220,0); }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--c-white);
  font-size: clamp(48px, 9vw, 108px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero__cargo {
  color: var(--c-teal);
  font-size: clamp(22px, 3.4vw, 38px);
  letter-spacing: 0.06em;
}

.hero__frase {
  max-width: 560px;
  margin-top: 28px;
  font-size: clamp(16px, 1.6vw, 18px);
  color: var(--c-silver);
  font-weight: 400;
}

.hero__meta {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-silver-dim);
  letter-spacing: 0.03em;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all 0.25s var(--ease);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.btn--primary {
  background: var(--c-teal);
  color: var(--c-black);
}
.btn--primary:hover { background: var(--c-teal-glow); transform: translateY(-2px); }
.btn--ghost {
  border: 1px solid var(--c-line);
  color: var(--c-white);
}
.btn--ghost:hover { border-color: var(--c-teal); color: var(--c-teal); transform: translateY(-2px); }

.hero__telemetry {
  position: absolute;
  bottom: 0; left: 0;
  width: 100%;
  height: 90px;
  z-index: 1;
  opacity: 0.9;
}
.hero__telemetry polyline {
  fill: none;
  stroke: var(--c-silver-dim);
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-dasharray: 2400;
  stroke-dashoffset: 2400;
  animation: draw 2.6s var(--ease) forwards 0.3s;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ==========================================================================
   REVEAL ON SCROLL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { transition-delay: 0ms !important; }
}

/* ==========================================================================
   SOBRE
   ========================================================================== */
.sobre__content {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}

.sobre__texto p {
  font-size: 17px;
  color: var(--c-silver);
  margin-bottom: 20px;
  max-width: 60ch;
}
.sobre__texto p:last-child { margin-bottom: 0; }

.sobre__destaques {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--c-line);
}
.sobre__destaque {
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.sobre__destaque-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 30px;
  color: var(--c-teal);
  min-width: 64px;
}
.sobre__destaque-label {
  font-size: 13.5px;
  color: var(--c-silver-dim);
  letter-spacing: 0.01em;
}

/* ==========================================================================
   STACK
   ========================================================================== */
.stack__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.stack__card {
  background: var(--c-black-soft);
  padding: 32px 28px;
  transition: background 0.3s;
}
.stack__card:hover { background: var(--c-panel); }

.stack__cat {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.stack__itens {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.stack__itens li {
  font-size: 14.5px;
  color: var(--c-silver);
  position: relative;
  padding-left: 16px;
}
.stack__itens li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 1.5px;
  background: var(--c-silver-dim);
}

/* ==========================================================================
   PROJETOS
   ========================================================================== */
.projetos__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.card-projeto {
  position: relative;
  background: var(--c-black-soft);
  border: 1px solid var(--c-line);
  padding: 36px 32px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  transition: border-color 0.3s, transform 0.3s var(--ease);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.card-projeto:hover {
  border-color: var(--c-teal);
  transform: translateY(-4px);
}

.card-projeto__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.card-projeto__titulo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  color: var(--c-white);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.card-projeto__badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-black);
  background: var(--c-teal);
  padding: 4px 9px;
  white-space: nowrap;
}

.card-projeto__desc {
  font-size: 14.5px;
  color: var(--c-silver);
  line-height: 1.65;
}

.card-projeto__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.card-projeto__tags span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-silver-dim);
  border: 1px solid var(--c-line);
  padding: 4px 9px;
}

.card-projeto__link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--c-teal);
  padding-top: 6px;
  width: fit-content;
}
.card-projeto__link svg { transition: transform 0.25s var(--ease); width: 14px; height: 14px; }
.card-projeto__link:hover svg { transform: translate(3px, -3px); }
.card-projeto__link--disabled {
  color: var(--c-silver-dim);
  pointer-events: none;
}

/* ==========================================================================
   CONTATO
   ========================================================================== */
.section--contato {
  border-bottom: none;
  text-align: left;
  background:
    radial-gradient(ellipse 60% 100% at 100% 0%, var(--c-teal-dim), transparent 60%),
    var(--c-black);
}

.contato__frase {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.2vw, 34px);
  color: var(--c-white);
  max-width: 680px;
  margin-bottom: 36px;
  letter-spacing: 0.005em;
}

.contato__email {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  color: var(--c-teal);
  border-bottom: 1px solid var(--c-teal);
  padding-bottom: 6px;
  margin-bottom: 44px;
  transition: color 0.25s, border-color 0.25s;
}
.contato__email:hover { color: var(--c-teal-glow); border-color: var(--c-teal-glow); }

.contato__links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.contato__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--c-silver);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}
.contato__links a:hover { color: var(--c-white); border-color: var(--c-silver-dim); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer { border-top: 1px solid var(--c-line); background: var(--c-black); }
.footer__inner {
  display: flex;
  justify-content: space-between;
  padding-block: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver-dim);
}

/* ==========================================================================
   RESPONSIVO
   ========================================================================== */
@media (max-width: 860px) {
  .header__nav { display: none; }
  .header__burger { display: flex; }
  .header__mobile { display: flex; }

  .sobre__content { grid-template-columns: 1fr; gap: 40px; }

  .section { padding: 88px 0; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: stretch; }
  .card-projeto__top { flex-direction: column; }
}