/* ============================================
   Marcos Fellipe Watanabe — Personal Site
   Dark glassmorphism, coral accent, 3D scene
   ============================================ */

:root {
  --bg: #0a0a10;
  --bg-2: #0e0e16;
  --bg-3: #14141e;
  --ink: oklch(0.97 0.005 60);
  --ink-dim: oklch(0.72 0.01 60);
  --ink-mute: oklch(0.52 0.01 60);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --glass: rgba(18, 18, 28, 0.55);
  --glass-2: rgba(20, 20, 30, 0.62);
  --accent: #ff5c3a;
  --accent-2: #ff8a6b;
  --accent-glow: rgba(255, 92, 58, 0.35);
  --cool: #5cc8ff;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--ink); font-family: var(--font-display); -webkit-font-smoothing: antialiased; }
body { overflow-x: hidden; position: relative; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

::selection { background: var(--accent); color: #000; }

/* ============================================
   Background ambient
   ============================================ */
.bg-grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 1;
  opacity: 0.4; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.04 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.bg-glow {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(50% 35% at 80% 10%, rgba(255, 92, 58, 0.18), transparent 70%),
    radial-gradient(45% 35% at 10% 80%, rgba(92, 200, 255, 0.10), transparent 70%);
}

/* ============================================
   3D Canvas
   ============================================ */
#scene3d {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  will-change: opacity;
  transition: opacity 0.4s ease;
}

/* ============================================
   Layout shell
   ============================================ */
.site {
  position: relative; z-index: 10;
  max-width: 1200px; margin: 0 auto;
  padding: 0 32px;
}

/* ============================================
   Nav
   ============================================ */
.nav {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 100;
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px 8px 18px;
  background: rgba(14, 14, 22, 0.6);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.7);
}
.nav-brand {
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-dim); padding-right: 12px;
  border-right: 1px solid var(--line);
}
.nav-brand b { color: var(--ink); font-weight: 600; }
.nav-links { display: flex; gap: 2px; }
.nav-link {
  font-size: 13px; padding: 8px 14px; border-radius: 999px;
  color: var(--ink-dim); transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--ink); background: var(--glass); }
.nav-lang {
  display: flex; align-items: center;
  font-family: var(--font-mono); font-size: 11px;
  padding: 6px 4px 6px 10px;
  border-left: 1px solid var(--line);
  color: var(--ink-mute);
}
.nav-lang button {
  padding: 4px 8px; border-radius: 999px; font-family: var(--font-mono);
  font-size: 11px; color: var(--ink-mute); transition: all .2s;
}
.nav-lang button.active { background: var(--accent); color: #1a0a05; font-weight: 600; }
.nav-lang button:not(.active):hover { color: var(--ink); }

@media (max-width: 720px) {
  .nav { top: 12px; padding: 6px 6px 6px 12px; }
  .nav-brand { font-size: 10px; padding-right: 8px; }
  .nav-links { display: none; }
  .nav-link { padding: 6px 10px; font-size: 12px; }
}

/* ============================================
   Section
   ============================================ */
section { padding: 120px 0; position: relative; }
.sec-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 28px;
}
.sec-label::before {
  content: ""; width: 28px; height: 1px; background: var(--accent);
}
.sec-title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 500; letter-spacing: -0.02em; line-height: 1.05;
  text-wrap: balance; margin-bottom: 56px; max-width: 22ch;
}

/* ============================================
   Hero (base)
   ============================================ */
.hero {
  min-height: 100vh; padding: 140px 0 80px;
  display: flex; flex-direction: column; justify-content: center;
  position: relative;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em;
  color: var(--ink); margin-bottom: 32px;
  text-transform: uppercase;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%; background: #2ecc71;
  box-shadow: 0 0 12px #2ecc71;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-handle {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  padding: 7px 14px; border-radius: 999px;
  color: var(--accent);
  background: rgba(255, 92, 58, 0.08);
  border: 1px solid rgba(255, 92, 58, 0.35);
  box-shadow: 0 0 0 4px rgba(255, 92, 58, 0.04);
  margin-bottom: 28px;
  margin-right: auto;
  transition: all .25s;
}
.hero-handle:hover { background: rgba(255, 92, 58, 0.14); border-color: var(--accent); }
.hero-handle .hint {
  font-size: 11px; color: var(--ink-dim); letter-spacing: 0.12em;
  padding-left: 10px; border-left: 1px solid rgba(255, 92, 58, 0.5);
  text-transform: uppercase;
}

.hero-name-wrap {
  position: relative;
  display: inline-grid;
  grid-template-columns: minmax(0, 1fr);
  cursor: pointer;
  margin-right: auto;
}
/* The two invisible sizers stack in the same grid cell — the cell auto-sizes
   to the LARGER of the two states (primary vs alt name). The live h1 is then
   overlaid absolutely so scramble characters can never push layout. */
.hero-name-sizer { grid-area: 1 / 1; }
.hero-name {
  font-size: clamp(56px, 11vw, 168px);
  font-weight: 600; letter-spacing: -0.04em; line-height: 0.92;
  white-space: pre-line;
  color: var(--ink);
  /* Crisp outline around each letter — paint-order draws the stroke BEHIND
     the fill so it reads as a hairline rim, not a thick boxed letter. */
  -webkit-text-stroke: 1.5px rgba(10, 10, 16, 0.85);
  paint-order: stroke fill;
  display: block;
  transition: color .25s;
  pointer-events: none;
  margin: 0;
}
.hero-name-wrap:hover .hero-name-live {
  -webkit-text-stroke-color: rgba(10, 10, 16, 0.95);
}
.hero-name-live {
  position: absolute;
  inset: 0;
  /* Out of normal flow so its width/height never affects the wrap. */
  overflow: hidden;
}
.hero-name-sizer {
  /* Invisible copies of both states — locks wrapper to the larger one */
  opacity: 0; visibility: hidden; pointer-events: none;
  user-select: none;
}
.hero-name-wrap:hover .hero-name-live { color: var(--accent-2); }

.hero-role {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-dim);
  margin-top: 32px;
}
.hero-role b { color: var(--accent); font-weight: 600; }

.typewriter {
  font-family: var(--font-mono); font-size: 15px;
  color: var(--ink); margin-top: 14px;
  min-height: 1.5em;
}
.typewriter .cursor { color: var(--accent); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-tagline {
  font-size: 18px; color: var(--ink); line-height: 1.55;
  max-width: 56ch; margin-top: 28px;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(14, 14, 22, 0.55), rgba(10, 10, 16, 0.35));
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: 4px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.hero-ctas { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 500; letter-spacing: -0.005em;
  border: 1px solid var(--line-strong);
  background: var(--glass-2); backdrop-filter: blur(14px);
  transition: all .25s cubic-bezier(.2,.8,.2,1);
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); border-color: var(--ink-dim); }
.btn-primary {
  background: var(--accent); color: #1a0a05; border-color: var(--accent);
  box-shadow: 0 16px 40px -16px var(--accent-glow);
}
.btn-primary:hover { background: var(--accent-2); box-shadow: 0 20px 50px -16px var(--accent-glow); }
.btn .arrow { transition: transform .25s; }
.btn:hover .arrow { transform: translateX(4px); }

.hero-stats {
  display: flex; gap: 0; margin-top: 64px; align-items: stretch;
  border-top: 1px solid var(--line);
  padding-top: 32px;
}
.hero-stat {
  flex: 1; padding-right: 24px; border-right: 1px solid var(--line);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-val {
  font-size: clamp(28px, 3.5vw, 44px); font-weight: 500;
  letter-spacing: -0.03em; color: var(--ink);
  font-feature-settings: "tnum";
}
.hero-stat-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-mute); margin-top: 6px;
}

/* Hero variations */
.hero[data-variant="split"] {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  min-height: 100vh;
}
.hero[data-variant="split"] .hero-name { font-size: clamp(48px, 7vw, 110px); }
.hero[data-variant="split"] .hero-3d-slot { position: relative; height: 540px; }

.hero[data-variant="overlay"] { display: block; min-height: 100vh; padding-top: 180px; }
.hero[data-variant="overlay"] .hero-card {
  background: var(--glass-2); backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border: 1px solid var(--line);
  border-radius: 24px; padding: 36px;
  max-width: 540px;
}
.hero[data-variant="overlay"] .hero-name { font-size: clamp(40px, 6vw, 88px); }
.hero[data-variant="overlay"] .hero-tagline-card {
  position: absolute; top: 280px; right: 0;
  max-width: 320px;
  background: var(--glass-2); backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line);
  border-radius: 20px; padding: 24px;
  font-size: 14px; color: var(--ink-dim); line-height: 1.6;
}
.hero[data-variant="overlay"] .hero-stats-card {
  position: absolute; bottom: 140px; right: 60px;
  background: var(--glass-2); backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line);
  border-radius: 20px; padding: 20px 28px;
  display: flex; gap: 28px;
}
.hero[data-variant="overlay"] .hero-stats-card .hero-stat { border: none; padding: 0; flex: initial; }
.hero[data-variant="overlay"] .hero-stats-card .hero-stat-val { font-size: 28px; }

@media (max-width: 900px) {
  .hero[data-variant="split"] { grid-template-columns: 1fr; }
  .hero[data-variant="split"] .hero-3d-slot { height: 360px; order: -1; }
  .hero[data-variant="overlay"] .hero-tagline-card,
  .hero[data-variant="overlay"] .hero-stats-card { position: static; margin-top: 24px; }
}

/* ============================================
   Glass card
   ============================================ */
.glass {
  background: var(--glass-2);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--line);
  border-radius: 20px;
  position: relative; overflow: hidden;
}
.glass::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none; border-radius: inherit;
}

/* ============================================
   About
   ============================================ */
.about-grid {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 32px;
}
.about-body p { font-size: 17px; line-height: 1.65; color: var(--ink-dim); margin-bottom: 18px; max-width: 60ch; }
.about-body p:first-child { color: var(--ink); font-size: 19px; }
.about-facts { padding: 28px; }
.about-fact {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 14px 0; border-bottom: 1px dashed var(--line);
  font-size: 14px;
}
.about-fact:last-child { border-bottom: none; }
.about-fact .k { font-family: var(--font-mono); color: var(--ink-mute); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.about-fact .v { color: var(--ink); }
@media (max-width: 760px) { .about-grid { grid-template-columns: 1fr; } }

/* ============================================
   Experience timeline
   ============================================ */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px;
  width: 1px; background: linear-gradient(180deg, var(--accent) 0%, var(--line) 30%, var(--line) 100%);
}
.exp { position: relative; padding-bottom: 56px; }
.exp:last-child { padding-bottom: 0; }
.exp::before {
  content: ""; position: absolute; left: -28px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px var(--bg), 0 0 16px var(--accent-glow);
}
.exp-head {
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap; gap: 8px; margin-bottom: 4px;
}
.exp-company { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; }
.exp-period { font-family: var(--font-mono); font-size: 12px; color: var(--ink-mute); letter-spacing: 0.08em; }
.exp-role { font-size: 14px; color: var(--accent); margin-bottom: 4px; }
.exp-location { font-family: var(--font-mono); font-size: 11px; color: var(--ink-mute); margin-bottom: 18px; letter-spacing: 0.06em; }
.exp-card {
  padding: 24px 28px; margin-top: 16px;
}
.exp-card ul { list-style: none; }
.exp-card li {
  font-size: 15px; line-height: 1.55; color: var(--ink-dim);
  padding-left: 18px; position: relative; margin-bottom: 10px;
}
.exp-card li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 6px; height: 1px; background: var(--accent);
}
.exp-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); }
.tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.05em;
  padding: 5px 10px; border-radius: 999px;
  background: rgba(255, 92, 58, 0.08);
  border: 1px solid rgba(255, 92, 58, 0.2);
  color: var(--accent-2);
}

/* ============================================
   Skills
   ============================================ */
.skills-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
}
@media (min-width: 1000px) {
  .skills-grid { grid-template-columns: repeat(4, 1fr); }
}
.skill-group { padding: 28px; }
.skill-group h3 {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 20px;
}
.skill-group ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.skill-group li {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; color: var(--ink);
}
.skill-group li::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 8px var(--accent-glow);
}
.skill-group-muted { opacity: 0.78; }
.skill-group-muted li { color: var(--ink-dim); font-size: 14px; }
.skill-group-muted li::before {
  background: var(--ink-mute); box-shadow: none; width: 5px; height: 5px;
}
@media (max-width: 760px) { .skills-grid { grid-template-columns: 1fr; } }

/* ============================================
   Education + Projects
   ============================================ */
.edu-list { display: grid; grid-template-columns: 1fr; gap: 16px; max-width: 820px; }
.edu-card { padding: 28px 32px; }
.edu-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.edu-course { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; }
.edu-period { font-family: var(--font-mono); font-size: 12px; color: var(--ink-mute); letter-spacing: 0.08em; }
.edu-inst { font-size: 13px; color: var(--accent); margin-bottom: 14px; }
.edu-card p { font-size: 15px; line-height: 1.6; color: var(--ink-dim); }

.projects-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.project-card { padding: 32px; display: flex; flex-direction: column; }
.project-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: rgba(255, 92, 58, 0.12); border: 1px solid rgba(255, 92, 58, 0.28);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 18px; margin-bottom: 18px;
}
.project-subtitle {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 8px;
}
.project-name { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; margin-bottom: 12px; line-height: 1.2; }
.project-desc { font-size: 15px; line-height: 1.6; color: var(--ink-dim); flex: 1; }

/* ============================================
   Contact
   ============================================ */
.contact { padding: 120px 0 160px; }
.contact-card {
  padding: 56px 48px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.contact-card .sec-title { margin-bottom: 0; }
.contact-card p { font-size: 17px; color: var(--ink-dim); max-width: 44ch; }
.contact-channels {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: center;
  margin-top: 8px; width: 100%;
}
.contact-chan {
  display: inline-flex; flex-direction: column; gap: 4px; align-items: flex-start;
  padding: 14px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: all .2s;
  text-align: left;
}
.contact-chan:hover { border-color: var(--accent); background: rgba(255,92,58,0.06); transform: translateY(-2px); }
.contact-chan .k {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-mute);
}
.contact-chan .v { font-size: 14px; color: var(--ink); }

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 32px 0 48px; text-align: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-mute);
  border-top: 1px solid var(--line);
}

/* ============================================
   Scroll reveal
   ============================================ */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity .8s cubic-bezier(.2,.8,.2,1), transform .8s cubic-bezier(.2,.8,.2,1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal-stagger > * {
  opacity: 0; transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1);
}
.reveal-stagger.in > * { opacity: 1; transform: none; }
.reveal-stagger.in > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: 0.15s; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: 0.25s; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: 0.35s; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: 0.45s; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: 0.55s; }

/* ============================================
   Magnetic cursor follower
   ============================================ */
.cursor-dot {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); mix-blend-mode: difference;
  transform: translate(-50%, -50%);
  transition: width .25s, height .25s, opacity .2s;
  opacity: 0;
}
@media (hover: hover) { .cursor-dot { opacity: 1; } }
.cursor-dot.hover { width: 28px; height: 28px; opacity: 0.7; }

/* ============================================
   Marquee
   ============================================ */
.marquee {
  overflow: hidden; padding: 28px 0; margin: 40px 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track {
  display: flex; gap: 56px; width: max-content;
  animation: scroll-x 30s linear infinite;
}
.marquee-item {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.1em;
  color: var(--ink-mute); white-space: nowrap;
  display: flex; align-items: center; gap: 56px;
}
.marquee-item::after {
  content: "◆"; color: var(--accent);
}
@keyframes scroll-x { to { transform: translateX(calc(-50% - 28px)); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}