/* ============================================================
   EradsBR — Wilson Santos
   Minimalist senior-dev portfolio. Dark by default.
   ============================================================ */

:root {
  --accent: #3b6cf5;
  --accent-dim: #2548b8;
  --accent-soft: rgba(59, 108, 245, 0.12);

  --bg: #0a0b0e;
  --bg-elev: #101218;
  --bg-card: #0f1117;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --fg: #ececec;
  --fg-dim: #a4a8b3;
  --fg-mute: #6a6f7c;
  --grid-line: rgba(255, 255, 255, 0.04);
}

[data-theme="light"] {
  --bg: #f6f6f3;
  --bg-elev: #ffffff;
  --bg-card: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.18);
  --fg: #14161a;
  --fg-dim: #4d525c;
  --fg-mute: #8a8f99;
  --grid-line: rgba(0, 0, 0, 0.04);
  --accent-soft: rgba(59, 108, 245, 0.10);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}
body {
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
  transition: background 240ms ease, color 240ms ease;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

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

.mono {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, Menlo, monospace;
  font-feature-settings: "zero", "ss01";
}

/* container */
.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}
@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, background 200ms ease;
}
.nav.scrolled {
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: -0.04em;
}
.brand-name { font-size: 15px; }
.brand-name b { font-weight: 600; }
.brand-name span { color: var(--fg-mute); font-weight: 400; }

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--fg-dim);
  transition: color 150ms ease;
}
.nav-links a:hover { color: var(--fg); }
.nav-cta {
  font-size: 13px;
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--fg);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 150ms ease;
}
.nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
}
@media (max-width: 720px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ---------- HERO ---------- */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero { padding: 110px 0 60px; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 28px;
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 10px #4ade80;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.hero h1 {
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  font-weight: 600;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 em {
  font-style: normal;
  font-family: 'Instrument Serif', 'Times New Roman', serif;
  font-weight: 400;
  font-style: italic;
  color: var(--fg-dim);
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 540px;
  line-height: 1.55;
  margin: 0 0 36px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 180ms ease;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dim); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--fg); }

/* hero meta strip */
.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-meta-item .num {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.hero-meta-item .lbl {
  font-size: 12px;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
}

/* avatar card */
.avatar-card {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: 18px;
  overflow: hidden;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow:
    0 1px 0 0 rgba(255,255,255,0.04) inset,
    0 30px 60px -20px rgba(0,0,0,0.5);
}
.avatar-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.05) saturate(1.1);
  display: block;
}
.avatar-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.55) 100%);
  pointer-events: none;
}
.avatar-tag {
  position: absolute;
  bottom: 18px;
  left: 18px;
  right: 18px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  z-index: 2;
  color: #fff;
}
.avatar-tag .name {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.avatar-tag .loc {
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.8;
}
.avatar-corner {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 10px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(6px);
  padding: 5px 10px;
  border-radius: 999px;
  z-index: 2;
  border: 1px solid rgba(255,255,255,0.12);
}

/* ---------- SECTION ---------- */
.section {
  padding: 100px 0;
  position: relative;
}
@media (max-width: 720px) { .section { padding: 72px 0; } }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 56px;
  gap: 32px;
  flex-wrap: wrap;
}
.section-label {
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-mute);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-label::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-size: clamp(32px, 4.5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.04;
  margin: 0;
  max-width: 720px;
  text-wrap: balance;
}
.section-title em {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--fg-dim);
}
.section-aside {
  font-size: 14px;
  color: var(--fg-dim);
  max-width: 320px;
  line-height: 1.6;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
}
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}
.about-text p {
  font-size: 17px;
  color: var(--fg-dim);
  margin: 0 0 18px;
  line-height: 1.7;
}
.about-text p strong { color: var(--fg); font-weight: 500; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.about-stat {
  padding: 28px 24px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about-stat .v {
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.025em;
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.about-stat .v sup { font-size: 18px; color: var(--accent); top: -10px; position: relative; }
.about-stat .l {
  font-size: 12px;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
}

/* ---------- SKILLS ---------- */
.skills-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}
@media (max-width: 900px) { .skills-wrap { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .skills-wrap { grid-template-columns: 1fr; } }
.skill-cat {
  background: var(--bg-card);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 220px;
  transition: background 180ms ease;
}
.skill-cat:hover { background: var(--bg-elev); }
.skill-cat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}
.skill-cat-num {
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.skill-cat-title {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.skill-tag {
  font-size: 12px;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--fg-dim);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400;
}

/* ---------- PROJECTS CAROUSEL ---------- */
.projects-section { padding-bottom: 120px; }
.carousel {
  position: relative;
}
.carousel-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 0 32px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-padding-left: 32px;
}
.carousel-track::-webkit-scrollbar { display: none; }

.project-card {
  flex: 0 0 calc(min(560px, 78vw));
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 200ms ease, transform 250ms ease;
}
.project-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.project-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-elev);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.project-visual-inner {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.project-body {
  padding: 28px 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}
.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-mute);
}
.project-meta .platform {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.project-meta .platform::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}
.project-name {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0;
}
.project-desc {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.6;
  margin: 0;
}
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.project-stack span {
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  padding: 4px 8px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  gap: 16px;
}
.carousel-progress {
  flex: 1;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.carousel-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--accent);
  width: 20%;
  transition: left 320ms ease, width 320ms ease;
}
.carousel-counter {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.06em;
  min-width: 60px;
}
.carousel-btns { display: flex; gap: 8px; }
.carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 160ms ease;
}
.carousel-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}
.carousel-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* project visuals */
.viz-app-mockup {
  width: 70%;
  height: 86%;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--accent) 0%, var(--accent-dim) 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px -20px rgba(0,0,0,0.6);
}
.viz-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.viz-bars {
  display: flex;
  align-items: end;
  gap: 10px;
  height: 60%;
  width: 70%;
}
.viz-bars div {
  flex: 1;
  background: var(--accent);
  border-radius: 4px 4px 0 0;
  opacity: 0.85;
}
.viz-letter {
  font-family: 'Instrument Serif', serif;
  font-size: 180px;
  line-height: 1;
  font-style: italic;
  color: var(--accent);
  opacity: 0.92;
}
.viz-numbers {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding: 24px;
  width: 80%;
}
.viz-numbers span {
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
}
.viz-numbers span.hot { background: var(--accent); color: #fff; border-color: var(--accent); }
.viz-doc {
  width: 50%;
  height: 80%;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.4);
}
.viz-doc-line {
  height: 6px;
  border-radius: 3px;
  background: var(--border);
}
.viz-doc-line.short { width: 60%; }
.viz-doc-line.accent { background: var(--accent); width: 30%; }
.viz-doc-stamp {
  position: absolute;
  bottom: 24px;
  right: 24px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid var(--accent);
  padding: 4px 10px;
  border-radius: 4px;
  transform: rotate(-6deg);
}

/* ---------- FOOTER / CONTACT ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}
.footer-cta {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: end;
  margin-bottom: 80px;
}
@media (max-width: 720px) { .footer-cta { grid-template-columns: 1fr; gap: 32px; } }
.footer-cta h2 {
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.035em;
  font-weight: 500;
  line-height: 1;
  margin: 0;
}
.footer-cta h2 em {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--fg-dim);
}
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.contact-item {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  transition: border-color 160ms ease;
}
.contact-item:hover { border-color: var(--accent); }
.contact-item .k { color: var(--fg-mute); font-family: 'JetBrains Mono', monospace; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-item .v { color: var(--fg); }
.contact-item .v:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--fg-mute);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom a { color: var(--fg-dim); }
.footer-bottom a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1), transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }

/* parallax avatar wrapper */
.parallax {
  will-change: transform;
  transition: transform 60ms linear;
}

/* ---------- THEME TOGGLE ---------- */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  color: var(--fg);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 180ms ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.05);
}
.theme-toggle svg { width: 18px; height: 18px; }

/* legal pages */
.legal {
  padding: 140px 0 100px;
  max-width: 760px;
  margin: 0 auto;
}
.legal h1 {
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.03em;
  font-weight: 500;
  line-height: 1.05;
  margin: 0 0 16px;
}
.legal .updated {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 40px;
}
.legal h2 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 48px 0 14px;
}
.legal h3 {
  font-size: 16px;
  font-weight: 500;
  margin: 32px 0 10px;
  color: var(--fg);
}
.legal p, .legal li {
  font-size: 16px;
  color: var(--fg-dim);
  line-height: 1.75;
}
.legal ul { padding-left: 22px; }
.legal a { color: var(--accent); }
.legal a:hover { text-decoration: underline; }
.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fg-dim);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 24px;
}
.legal-back:hover { color: var(--accent); }
.legal-apps {
  margin: 32px 0;
  padding: 20px 24px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.legal-apps strong { color: var(--fg); font-weight: 500; }