/* ============================================================
   TOKENS
   ============================================================ */
:root {
  --ink: #0a0f1e;
  --panel: #111a2e;
  --panel-2: #0e1526;
  --line: #22304e;
  --text: #dce4f2;
  --muted: #8ca0bf;
  --accent: #6cace4;      /* albiceleste blue */
  --accent-soft: rgba(108, 172, 228, 0.14);
  --purple: #b138dd;      /* fastest-lap purple */
  --signal: #37d67a;      /* positive delta green */
  --red: #e10600;

  --font-display: "Sora", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --maxw: 1080px;
  --speed: 1;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

.mono { font-family: var(--font-mono); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   F1 START LIGHTS INTRO
   ============================================================ */
#lights {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.45s ease;
}
#lights.out { opacity: 0; pointer-events: none; }
#lights.gone { display: none; }

.lights-row { display: flex; gap: 18px; }
.lights-row span {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #1c2438;
  border: 1px solid var(--line);
  transition: background 0.1s, box-shadow 0.1s;
}
.lights-row span.on {
  background: var(--red);
  box-shadow: 0 0 18px rgba(225, 6, 0, 0.7);
}

/* ============================================================
   NEURAL NET CANVAS + TIMING BAR
   ============================================================ */
#net {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

#timing-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  z-index: 60;
  transition: background 0.3s ease;
}
#timing-bar.fastest { background: var(--purple); box-shadow: 0 0 10px var(--purple); }

/* ============================================================
   TOAST
   ============================================================ */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 10px 18px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  z-index: 90;
  transition: opacity 0.3s, transform 0.3s;
  max-width: 90vw;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ============================================================
   NAV
   ============================================================ */
#topnav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: rgba(10, 15, 30, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
#topnav.scrolled { border-bottom-color: var(--line); }

.brand {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.05em;
}
.brand:hover { text-decoration: none; color: var(--accent); }

#topnav nav { display: flex; gap: 22px; align-items: center; }
#topnav nav a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.2s;
}
#topnav nav a:hover { color: var(--text); text-decoration: none; }
#topnav nav a.active { color: var(--accent); }

.nav-cta {
  border: 1px solid var(--line);
  padding: 6px 14px;
  border-radius: 6px;
  color: var(--text) !important;
}
.nav-cta:hover { border-color: var(--accent); }

/* ============================================================
   LAYOUT / SECTIONS
   ============================================================ */
main { position: relative; z-index: 1; }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 28px 60px;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-sub { color: var(--muted); margin-bottom: 36px; max-width: 640px; }

.stage-label {
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.stage-label::after {
  content: "";
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.stage-num {
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.72rem;
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transition:
    opacity calc(0.7s * var(--speed)) cubic-bezier(0.2, 0.6, 0.2, 1),
    transform calc(0.7s * var(--speed)) cubic-bezier(0.2, 0.6, 0.2, 1);
  will-change: opacity, transform;
}
.reveal.fade { transform: none; }
.reveal.rise { transform: translateY(26px); }
.reveal.zoom { transform: scale(0.92); }
.reveal.slide-l { transform: translateX(-34px); }
.reveal.slide-r { transform: translateX(34px); }

.reveal.in {
  opacity: 1;
  transform: none;
}

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  transform-origin: center top;
  will-change: transform, opacity;
}

.hero-meta {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 20px;
}
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  margin-right: 8px;
  animation: pulse-dot 2.2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(55, 214, 122, 0.5); }
  50% { box-shadow: 0 0 0 7px rgba(55, 214, 122, 0); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  min-height: 1.1em;
}

.hero-role {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  color: var(--muted);
  margin-top: 14px;
}
.hero-role strong { color: var(--accent); font-weight: 600; }

.hero-inference {
  margin-top: 26px;
  color: var(--signal);
  font-size: 0.92rem;
  min-height: 1.5em;
}

.cursor-blink { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary {
  background: var(--accent);
  color: var(--ink);
}
.btn-primary:hover { box-shadow: 0 8px 24px rgba(108, 172, 228, 0.35); }
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); }

.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.scroll-hint:hover { color: var(--accent); text-decoration: none; }
.chevron { animation: bob 1.8s ease-in-out infinite; font-size: 0.7rem; }
@keyframes bob { 50% { transform: translateY(6px); } }

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 44px;
  align-items: start;
}
.about-text p { margin-bottom: 18px; color: var(--text); }

.about-facts {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  font-size: 0.85rem;
}
.about-facts .fact { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-bottom: 1px dashed var(--line); }
.about-facts .fact:last-child { border-bottom: none; }
.about-facts .k { color: var(--muted); }
.about-facts .v { color: var(--accent); text-align: right; }

/* ============================================================
   KPI GRID
   ============================================================ */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.kpi {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 22px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.kpi:hover { border-color: var(--accent); transform: translateY(-3px); }
.kpi::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s ease;
}
.kpi.in::before { transform: scaleX(1); }

.kpi-value {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 500;
  color: var(--accent);
  line-height: 1.1;
}
.kpi-label { color: var(--muted); font-size: 0.88rem; margin-top: 8px; }

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  margin-top: 26px;
  padding-left: 34px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--line);
}
/* animated fill line */
.timeline::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  width: 2px;
  height: var(--fill, 0%);
  max-height: calc(100% - 12px);
  background: linear-gradient(180deg, var(--accent), var(--purple));
  transition: height 0.2s linear;
}

.t-item {
  position: relative;
  margin-bottom: 34px;
}
.t-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--accent);
  z-index: 2;
  transition: background 0.3s, box-shadow 0.3s;
}
.t-item.in::before {
  background: var(--accent);
  box-shadow: 0 0 12px rgba(108, 172, 228, 0.6);
}

.t-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px 26px;
  transition: border-color 0.3s;
}
.t-card:hover { border-color: var(--accent); }

.t-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.t-role { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; }
.t-period { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); }
.t-org { color: var(--accent); font-size: 0.95rem; margin-top: 2px; }
.t-current {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--signal);
  border: 1px solid rgba(55, 214, 122, 0.4);
  border-radius: 4px;
  padding: 1px 7px;
  margin-left: 8px;
  vertical-align: middle;
}
.t-card ul { margin: 14px 0 0 18px; }
.t-card li { color: var(--muted); font-size: 0.92rem; margin-bottom: 7px; }
.t-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 3px 9px;
}

.education {
  margin-top: 30px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.edu-card {
  flex: 1;
  min-width: 260px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 16px 20px;
  font-size: 0.9rem;
}
.edu-card .deg { font-weight: 600; }
.edu-card .sch { color: var(--muted); font-size: 0.85rem; margin-top: 2px; }

/* ============================================================
   RADAR GRID
   ============================================================ */
.radar-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.radar-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  transition: border-color 0.3s;
}
.radar-card:hover { border-color: var(--accent); }
.radar-card h3 {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.radar-card canvas { max-height: 300px; }

/* ============================================================
   PROJECTS
   ============================================================ */
.gh-status { font-size: 0.75rem; color: var(--muted); }

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.project {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, transform 0.3s;
  color: var(--text);
}
.project:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  text-decoration: none;
}
.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.project-stars { color: var(--accent); }
.project h3 { font-family: var(--font-display); font-size: 1.02rem; font-weight: 700; margin-bottom: 8px; }
.project p { color: var(--muted); font-size: 0.87rem; flex: 1; }
.project .t-tags { margin-top: 14px; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 10px;
}
.contact-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  color: var(--text);
  transition: border-color 0.3s, transform 0.3s;
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-3px); text-decoration: none; }
.contact-card .c-k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.contact-card .c-v { margin-top: 6px; font-weight: 600; color: var(--accent); word-break: break-all; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 50px 20px 40px;
  color: var(--muted);
  font-size: 0.78rem;
  border-top: 1px solid var(--line);
  margin-top: 60px;
}
.footer-sub { margin-top: 6px; opacity: 0.6; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .kpi-grid, .project-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .radar-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  #topnav nav a:not(.nav-cta) { display: none; }
  .kpi-grid, .project-grid, .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 20px 40px; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .chevron, .status-dot, .cursor-blink { animation: none !important; }
  #lights { display: none !important; }
  #net { display: none; }
}