/* ============================================================
   YURI PEIXOTO PORTFOLIO — style.css
   Dark theme · Purple/Violet + Neon Green palette
   ============================================================ */

/* ── TOKENS ─────────────────────────────────────────────── */
:root {
  /* Palette */
  --clr-bg:         #0a090f;
  --clr-bg-alt:     #0f0d18;
  --clr-surface:    #14121f;
  --clr-surface-2:  #1c192c;
  --clr-border:     rgba(139, 92, 246, 0.18);
  --clr-border-2:   rgba(255,255,255,0.06);

  --clr-purple:     #8b5cf6;
  --clr-purple-light: #a78bfa;
  --clr-purple-dim: rgba(139, 92, 246, 0.12);
  --clr-green:      #4ade80;
  --clr-green-dim:  rgba(74, 222, 128, 0.12);

  --clr-text:       #e8e4f0;
  --clr-text-muted: #9490a8;
  --clr-text-faint: #504d61;

  /* Typography */
  --ff-sans:  'Inter', system-ui, sans-serif;
  --ff-mono:  'JetBrains Mono', 'Courier New', monospace;

  /* Spacing */
  --nav-h:    68px;
  --section-py: 100px;
  --radius:   14px;
  --radius-sm: 8px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 0.25s var(--ease);
}

/* ── RESET ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--ff-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: none; }
ul { list-style: none; }

/* ── NOISE OVERLAY ───────────────────────────────────────── */
.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── SCROLLBAR ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-purple); border-radius: 99px; }

/* ── TYPOGRAPHY HELPERS ──────────────────────────────────── */
.accent        { color: var(--clr-purple-light); }
.accent-green  { color: var(--clr-green); }
.mono          { font-family: var(--ff-mono); font-size: 0.9em; }
.link-inline {
  color: var(--clr-purple-light);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.link-inline:hover { border-color: var(--clr-purple-light); }

/* ── NAV ─────────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(10, 9, 15, 0.88);
  backdrop-filter: blur(18px);
  border-color: var(--clr-border-2);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--ff-mono);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--clr-text);
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: 0.8; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 6px 14px;
  font-size: 0.875rem;
  color: var(--clr-text-muted);
  border-radius: 99px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--clr-text); background: var(--clr-purple-dim); }
.nav-cta {
  background: var(--clr-purple-dim);
  color: var(--clr-purple-light) !important;
  border: 1px solid var(--clr-border);
}
.nav-cta:hover { background: rgba(139, 92, 246, 0.22) !important; }
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 99px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--clr-border-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--clr-border-2) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 40%, transparent 100%);
}
.hero-glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at 50% 40%, rgba(139, 92, 246, 0.22), rgba(74, 222, 128, 0.06) 60%, transparent 80%);
  pointer-events: none;
  filter: blur(40px);
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px 120px;
  display: flex;
  align-items: center;
  gap: 64px;
}
/* Avatar */
.hero-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}
.hero-avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--clr-border);
  box-shadow: 0 0 0 8px var(--clr-purple-dim), 0 24px 60px rgba(0,0,0,0.48);
  animation: avatar-float 6s ease-in-out infinite;
}
.hero-avatar-ring {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1.5px dashed rgba(139, 92, 246, 0.35);
  animation: ring-spin 20s linear infinite;
}
@keyframes avatar-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
@keyframes ring-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
/* Text */
.hero-text { flex: 1; }
.hero-greeting {
  font-size: 0.9rem;
  font-family: var(--ff-mono);
  color: var(--clr-green);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.hero-name {
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 30%, var(--clr-purple-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-roles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.hero-role-static {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--clr-purple-light);
}
.hero-sep {
  color: var(--clr-text-faint);
  font-size: 0.9rem;
}
.hero-tagline {
  color: var(--clr-text-muted);
  font-size: 1rem;
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.8;
}
/* Buttons */
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 99px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--clr-purple);
  color: #fff;
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.35);
}
.btn-primary:hover {
  background: var(--clr-purple-light);
  box-shadow: 0 0 36px rgba(139, 92, 246, 0.55);
  transform: translateY(-1px);
}
.btn-ghost {
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  background: var(--clr-purple-dim);
}
.btn-ghost:hover {
  border-color: var(--clr-purple);
  color: var(--clr-text);
  background: rgba(139, 92, 246, 0.16);
  transform: translateY(-1px);
}
/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--clr-text-faint);
  animation: bounce 2s ease-in-out infinite;
  transition: color var(--transition);
}
.hero-scroll-indicator:hover { color: var(--clr-purple-light); }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ── SECTIONS ────────────────────────────────────────────── */
.section       { padding: var(--section-py) 0; }
.section-alt   { background: var(--clr-bg-alt); }
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 720px; }
.section-label {
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  color: var(--clr-purple);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  opacity: 0.7;
}
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
  background: linear-gradient(120deg, var(--clr-text) 60%, var(--clr-purple-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  color: var(--clr-text-muted);
  max-width: 540px;
  margin-bottom: 56px;
}

/* ── SOBRE ───────────────────────────────────────────────── */
.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.sobre-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.sobre-text p { color: var(--clr-text-muted); line-height: 1.9; }
.sobre-text strong { color: var(--clr-text); font-weight: 600; }
.sobre-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Info Cards */
.info-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.info-card:hover {
  border-color: var(--clr-border);
  background: var(--clr-surface-2);
  transform: translateY(-2px);
}
.info-card-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--clr-purple-dim);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-purple-light);
}
.info-card-label { font-size: 0.72rem; color: var(--clr-text-faint); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 4px; }
.info-card-value { font-size: 0.9rem; font-weight: 500; color: var(--clr-text); }

/* ── STACK ───────────────────────────────────────────────── */
.stack-groups {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px 48px;
}
.stack-group-title {
  font-size: 0.78rem;
  font-family: var(--ff-mono);
  color: var(--clr-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.stack-pills { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--clr-border-2);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  transition: all var(--transition);
  cursor: default;
}
.pill:hover { transform: translateY(-2px); }
.pill-primary {
  background: var(--clr-purple-dim);
  border-color: var(--clr-border);
  color: var(--clr-purple-light);
}
.pill-primary:hover { box-shadow: 0 0 12px rgba(139, 92, 246, 0.25); }
.pill-green {
  background: var(--clr-green-dim);
  border-color: rgba(74, 222, 128, 0.25);
  color: var(--clr-green);
}
.pill-green:hover { box-shadow: 0 0 12px rgba(74, 222, 128, 0.2); }

/* ── TIMELINE ────────────────────────────────────────────── */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 32px;
  margin-bottom: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-purple), var(--clr-purple-dim) 80%, transparent);
}
.timeline-item {
  position: relative;
  padding: 28px 0 28px 24px;
  border-bottom: 1px solid var(--clr-border-2);
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.timeline-item.visible { opacity: 1; transform: translateX(0); }
.timeline-item:last-child { border-bottom: none; }
.timeline-dot {
  position: absolute;
  left: -32px;
  top: 34px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--clr-bg);
  border: 2px solid var(--clr-purple);
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.5);
}
.timeline-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.timeline-year { font-family: var(--ff-mono); font-size: 0.8rem; color: var(--clr-purple); }
.timeline-badge {
  font-size: 0.7rem;
  padding: 2px 10px;
  border-radius: 99px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.badge-current {
  background: var(--clr-green-dim);
  color: var(--clr-green);
  border: 1px solid rgba(74, 222, 128, 0.3);
}
.timeline-title { font-size: 1.05rem; font-weight: 600; color: var(--clr-text); margin-bottom: 4px; }
.timeline-company { font-size: 0.85rem; color: var(--clr-purple-light); margin-bottom: 10px; }
.timeline-desc { font-size: 0.9rem; color: var(--clr-text-muted); line-height: 1.8; }
.timeline-note { font-size: 0.85rem; color: var(--clr-text-faint); margin-top: 8px; }

/* ── PROJECTS ────────────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.project-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  border-color: var(--clr-border);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35), 0 0 0 1px var(--clr-border);
}
.project-card-private { opacity: 0.75; }
.project-card-wip  { border-style: dashed; }

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}
.project-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--clr-purple-dim);
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-purple-light);
}
.project-icon-dim  { background: var(--clr-surface-2); border-color: var(--clr-border-2); color: var(--clr-text-faint); }
.project-icon-green { background: var(--clr-green-dim); border-color: rgba(74,222,128,0.25); color: var(--clr-green); }

.project-link {
  color: var(--clr-text-faint);
  transition: color var(--transition);
  padding: 4px;
}
.project-link:hover { color: var(--clr-purple-light); }
.project-title { font-size: 1rem; font-weight: 600; color: var(--clr-text); }
.project-desc { font-size: 0.875rem; color: var(--clr-text-muted); line-height: 1.8; flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 0.72rem;
  font-family: var(--ff-mono);
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--clr-purple-dim);
  color: var(--clr-purple-light);
  border: 1px solid var(--clr-border);
}
.project-private-badge,
.project-wip-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--clr-text-faint);
  border: 1px solid var(--clr-border-2);
  border-radius: 99px;
  padding: 4px 12px;
  width: fit-content;
}
.project-wip-badge { color: var(--clr-green); border-color: rgba(74,222,128,0.2); background: var(--clr-green-dim); }

/* ── CONTACT ─────────────────────────────────────────────── */
.contact-lead {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: 48px;
  max-width: 520px;
}
.contact-links { display: flex; flex-direction: column; gap: 14px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-2);
  border-radius: var(--radius);
  color: var(--clr-text-muted);
  font-weight: 500;
  transition: all var(--transition);
}
.contact-card:hover {
  border-color: var(--clr-purple);
  color: var(--clr-text);
  background: var(--clr-surface-2);
  transform: translateX(4px);
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.15);
}
.contact-arrow {
  margin-left: auto;
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition);
}
.contact-card:hover .contact-arrow { opacity: 1; transform: translateX(0); }

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--clr-border-2);
  text-align: center;
}
.footer-text { font-size: 0.85rem; color: var(--clr-text-faint); }

/* ── SCROLL REVEAL ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner { flex-direction: column; text-align: center; gap: 40px; padding: 60px 24px 100px; }
  .hero-avatar { width: 140px; height: 140px; }
  .hero-roles   { justify-content: center; }
  .hero-tagline { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }

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

  .stack-groups { grid-template-columns: 1fr; gap: 28px; }

  .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --section-py: 72px; }
  .nav-links { display: none; flex-direction: column; position: fixed; top: var(--nav-h); left: 0; right: 0; background: rgba(10, 9, 15, 0.96); backdrop-filter: blur(20px); padding: 24px; gap: 6px; border-bottom: 1px solid var(--clr-border-2); }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .sobre-cards { grid-template-columns: 1fr; }
  .hero-avatar { width: 110px; height: 110px; }
  .btn { padding: 10px 20px; font-size: 0.85rem; }
}