@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #0a0e14;
  --bg-panel: #101724;
  --bg-panel-2: #0d131e;
  --text: #e7edf5;
  --muted: #8695a8;
  --accent: #ffb020;
  --accent-2: #39d2ff;
  --line: #1c2634;
  --line-bright: #2a3648;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --display: 'Space Grotesk', sans-serif;
  --body: 'Inter', -apple-system, sans-serif;
  --max: 920px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 160ms;
  --dur: 240ms;

  /* Depth */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  --shadow-md: 0 12px 32px -12px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  --shadow-lg: 0 24px 64px -20px rgba(0, 0, 0, 0.65);

  /* 4px/8px spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--body);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--display); font-weight: 600; color: var(--text); }
h1 { line-height: 1.08; letter-spacing: -0.02em; }
h2 { line-height: 1.2; letter-spacing: -0.01em; }
h3 { line-height: 1.3; letter-spacing: -0.006em; }
a { color: var(--accent-2); text-decoration: none; transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease); }
a:hover { text-decoration: underline; }

/* Visible keyboard focus everywhere -- WCAG 2.4.7. There were no focus styles
   at all before this, so keyboard/switch users had no way to see where they were. */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.scenario-tab:focus-visible,
.nav-toggle:focus-visible,
.project-card:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 3px;
}
:focus:not(:focus-visible) { outline: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Nav */
nav.topnav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 14, 20, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
nav.topnav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1300px;
  padding: 14px 24px;
  flex-wrap: nowrap;
  gap: 16px;
  overflow-x: auto;
  scrollbar-width: none;
}
nav.topnav .wrap::-webkit-scrollbar { display: none; }
nav.topnav .brand {
  font-family: var(--mono);
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  color: var(--accent);
  flex-shrink: 0;
}
nav.topnav .brand::before { content: "// "; color: var(--muted); }
nav.topnav ul {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
  position: relative;
  flex-shrink: 0;
}
nav.topnav a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 6px 12px;
  border-radius: 3px;
  position: relative;
  display: inline-block;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
nav.topnav a:hover, nav.topnav a.active { color: var(--text); text-decoration: none; }
nav.topnav a.active { color: var(--accent); }
#nav-indicator {
  position: absolute;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  border-radius: 2px;
  width: 0;
  left: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 34px;
  height: 34px;
  background: var(--bg-panel);
  border: 1px solid var(--line-bright);
  border-radius: 5px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: border-color var(--dur) var(--ease), transform var(--dur-fast) var(--ease);
}
.nav-toggle:hover { border-color: var(--accent-2); }
.nav-toggle:active { transform: scale(0.94); }
.nav-toggle span {
  display: block;
  height: 2px;
  width: 16px;
  background: var(--accent-2);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1100px) {
  nav.topnav .wrap {
    flex-wrap: wrap;
    overflow: visible;
  }
  .nav-toggle { display: flex; }
  nav.topnav ul {
    display: none;
    flex-direction: column;
    width: 100%;
    flex-basis: 100%;
    padding-top: 12px;
    gap: 0;
  }
  nav.topnav ul.open { display: flex; }
  nav.topnav a {
    padding: 13px 8px;
    border-bottom: 1px solid var(--line);
    white-space: normal;
    width: 100%;
  }
  nav.topnav li:last-child a { border-bottom: none; }
  #nav-indicator { display: none; }
}

/* Hero */
header.hero {
  padding: 96px 0 56px;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
header.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(57, 210, 255, 0.08), transparent 70%);
  pointer-events: none;
}
header.hero .wrap { position: relative; z-index: 1; }

.hero-map {
  display: none;
  position: absolute;
  top: 0;
  right: 0;
  width: 460px;
  height: auto;
  z-index: 0;
  opacity: 0.75;
  pointer-events: none;
}
.hero-map .fl-shape {
  fill: rgba(57, 210, 255, 0.12);
  stroke: rgba(255, 176, 32, 0.45);
  stroke-width: 1.8;
  filter: drop-shadow(0 0 10px rgba(57, 210, 255, 0.25));
}
.hero-map .route {
  fill: none;
  stroke: var(--accent-2);
  stroke-width: 1.7;
  stroke-dasharray: 7 7;
  opacity: 0.85;
  filter: drop-shadow(0 0 3px rgba(57, 210, 255, 0.6));
  animation: dash-flow 3.2s linear infinite;
}
.hero-map .route.amber { stroke: var(--accent); filter: drop-shadow(0 0 3px rgba(255, 176, 32, 0.6)); }
.hero-map .city-dot { fill: var(--accent-2); opacity: 0.95; filter: drop-shadow(0 0 3px rgba(57, 210, 255, 0.7)); }
.hero-map .hub-dot { fill: var(--accent); filter: drop-shadow(0 0 5px rgba(255, 176, 32, 0.8)); }
.hero-map .pulse-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.8;
  transform-box: fill-box;
  transform-origin: center;
  animation: radar-pulse 2.6s ease-out infinite;
}
.hero-map .label {
  font-family: var(--mono);
  font-size: 10px;
  fill: var(--text);
  letter-spacing: 0.5px;
  opacity: 0.9;
}
.hero-map .label.kdab { fill: var(--accent); font-weight: 600; }

@keyframes dash-flow { to { stroke-dashoffset: -28; } }
@keyframes radar-pulse {
  0% { transform: scale(0.4); opacity: 0.65; }
  100% { transform: scale(2.4); opacity: 0; }
}

/* Only show once the viewport is comfortably wider than the 920px text
   column, so the map sits in real free space instead of overlapping text. */
@media (min-width: 1440px) {
  .hero-map { display: block; }
}
@media (min-width: 1720px) {
  .hero-map { opacity: 0.95; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-map .route, .hero-map .pulse-ring { animation: none; }
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  color: var(--accent-2);
  text-transform: uppercase;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
header.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}
header.hero .title-line { color: var(--text); font-size: 1.15rem; margin: 0 0 4px; font-weight: 500; }
header.hero .affil { color: var(--muted); font-size: 0.95rem; margin: 0; font-family: var(--mono); }
header.hero .summary { margin-top: 28px; max-width: 66ch; color: var(--muted); font-size: 1.02rem; }

.badges { margin-top: var(--space-5); display: flex; gap: var(--space-2); flex-wrap: wrap; }
.badge {
  border: 1px solid var(--line-bright);
  background: var(--bg-panel);
  border-radius: 4px;
  padding: 7px 14px;
  font-size: 0.78rem;
  font-family: var(--mono);
  letter-spacing: 0.4px;
  color: var(--accent-2);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.badge:hover { border-color: var(--accent-2); transform: translateY(-1px); }

.btn {
  display: inline-block;
  border: 1px solid var(--line-bright);
  color: var(--text);
  border-radius: 5px;
  padding: 11px 20px;
  font-size: 0.9rem;
  font-family: var(--mono);
  margin-top: 26px;
  margin-right: 10px;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }
.btn.solid { background: var(--accent); color: #14100a; border-color: var(--accent); font-weight: 600; }
.btn.solid:hover { box-shadow: 0 0 24px rgba(255, 176, 32, 0.4); }

/* Sections */
section { padding: 64px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
section h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.6rem);
  margin: 0 0 32px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
section h2::before {
  content: attr(data-index);
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
}
section h2::after { content: ""; flex: 1; height: 1px; background: var(--line-bright); }

.entry { margin-bottom: 26px; padding-left: 18px; border-left: 2px solid var(--line); }
.entry:last-child { margin-bottom: 0; }
.entry-head { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: baseline; }
.entry-title { font-weight: 600; font-size: 1.02rem; color: var(--text); }
.entry-org { color: var(--muted); font-size: 0.92rem; }
.entry-date { color: var(--accent-2); font-size: 0.8rem; font-family: var(--mono); white-space: nowrap; }
.entry ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.entry ul li { margin-bottom: 5px; font-size: 0.95rem; }

.pub-list { list-style: none; margin: 0; padding: 0; }
.pub-list li {
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--line);
  border-bottom: 1px dashed var(--line);
  font-size: 0.95rem;
  color: var(--muted);
  transition: border-left-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.pub-list li:hover { border-left-color: var(--accent); background-color: rgba(255, 255, 255, 0.015); }
.pub-list li:last-child { border-bottom: none; }
.pub-list strong { color: var(--text); }
.pub-venue { color: var(--accent-2); font-style: normal; font-family: var(--mono); font-size: 0.85rem; }
.pub-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  border: 1px solid var(--line-bright);
  border-radius: 3px;
  padding: 1px 7px;
  margin-right: 8px;
  color: var(--accent);
  vertical-align: middle;
}
.pub-award { display: inline-block; margin-top: 6px; font-size: 0.8rem; font-family: var(--mono); color: var(--accent); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
@media (max-width: 640px) { .grid-2 { grid-template-columns: 1fr; } }

.project-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 980px) { .project-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .project-grid { grid-template-columns: 1fr; } }
.project-card {
  display: block;
  background: var(--bg-panel);
  border: 1px solid var(--line-bright);
  border-radius: 8px;
  padding: 22px;
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.project-card:hover { border-color: var(--accent-2); transform: translateY(-4px); box-shadow: var(--shadow-md); text-decoration: none; }
.project-card:active { transform: translateY(-1px); }
.project-tag {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.8px; text-transform: uppercase;
  color: var(--accent); display: block; margin-bottom: 10px;
}
.project-title { font-family: var(--display); font-weight: 600; font-size: 1.05rem; margin-bottom: 10px; color: var(--text); }
.project-desc { color: var(--muted); font-size: 0.88rem; margin: 0 0 16px; }
.project-link { font-family: var(--mono); font-size: 0.8rem; color: var(--accent-2); }

.skill-group { margin-bottom: 18px; }
.skill-group .label {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent-2);
  margin-bottom: 8px;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--bg-panel);
  border: 1px solid var(--line-bright);
  border-radius: 4px;
  padding: 5px 11px;
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--muted);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.chip:hover { border-color: var(--line-bright); color: var(--text); }

.service-list { margin: 0; padding-left: 18px; color: var(--muted); }
.service-list li { margin-bottom: 10px; font-size: 0.95rem; }
.service-list strong { color: var(--text); }

.contact-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.contact-links a {
  border: 1px solid var(--line-bright);
  border-radius: 5px;
  padding: 9px 16px;
  font-size: 0.88rem;
  font-family: var(--mono);
  color: var(--text);
  display: inline-block;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.contact-links a:hover { border-color: var(--accent-2); color: var(--accent-2); text-decoration: none; transform: translateY(-2px); }

footer { padding: 36px 0 56px; color: var(--muted); font-size: 0.8rem; font-family: var(--mono); text-align: center; }

/* Reveal animation targets (GSAP controls opacity/transform via JS; CSS just sets initial state) */
.reveal { opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
}