/* ========================= 
   Base + Theme
   ========================= */

:root {
  --bg: #0b0f17;
  --bg-alt: #0f1624;

  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);

  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.76);
  --faint: rgba(255, 255, 255, 0.60);

  --accent: #6ee7ff;
  --accent-2: #a78bfa;

  --shadow: 0 18px 55px rgba(0, 0, 0, 0.55);

  --radius: 18px;
  --radius-sm: 12px;

  --max: 1100px;
  --pad: 24px;

  --header-offset: 120px;

  --reading-width: 72ch;

  --focus-ring: 3px;
  --focus-offset: 3px;
  --focus-glow: rgba(110, 231, 255, 0.28);
  --focus-glow-2: rgba(167, 139, 250, 0.22);
}

* {
  box-sizing: border-box;
}

/* =========================
   Reduced Motion (Accessibility)
   ========================= */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
  }
}

/* =========================
   Anchor Scrolling Improvements
   ========================= */

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-offset);
}

section {
  scroll-margin-top: var(--header-offset);
}

/* =========================
   Page Base + Readability
   ========================= */

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% 10%, rgba(110, 231, 255, 0.16), transparent 55%),
              radial-gradient(900px 700px at 85% 30%, rgba(167, 139, 250, 0.14), transparent 55%),
              var(--bg);
  color: var(--text);

  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.1px;

  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

p {
  margin-top: 0;
  margin-bottom: 0;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* =========================
   Skip Link (Keyboard)
   ========================= */

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus-visible {
  position: static;
  width: auto;
  height: auto;
  padding: 12px 16px;
  display: inline-block;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  box-shadow: 0 0 0 var(--focus-ring) var(--focus-glow);
  text-decoration: none;
}

/* =========================
   Global Focus Styles (Accessibility)
   ========================= */

a,
button {
  border-radius: 10px;
}

a:focus {
  outline: none;
}

button:focus {
  outline: none;
}

a:focus-visible,
button:focus-visible,
.nav-link:focus-visible,
.btn:focus-visible {
  outline: var(--focus-ring) solid transparent;
  box-shadow:
    0 0 0 var(--focus-ring) var(--focus-glow),
    0 0 0 calc(var(--focus-ring) + 2px) var(--focus-glow-2);
}

a:focus-visible {
  text-decoration: none;
}

a:focus-visible,
.nav-link:focus-visible,
.btn:focus-visible {
  outline-offset: var(--focus-offset);
}

/* =========================
   Links
   ========================= */

a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition-property: text-decoration-thickness, color;
  transition-duration: 180ms;
  transition-timing-function: ease;
}

a:hover {
  text-decoration-thickness: 2px;
}

/* =========================
   Header + Nav
   ========================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 23, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 18px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand-link {
  font-weight: 850;
  letter-spacing: 0.2px;
  text-decoration: none;
}

.brand-link:hover {
  text-decoration: none;
}

.brand-sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 14px;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* =========================
   Nav Links + Active Indicator
   ========================= */

.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.2;
  transition-property: background, border-color, color;
  transition-duration: 180ms;
  transition-timing-function: ease;
}

.nav-link:hover {
  border-color: var(--border);
  color: var(--text);
  text-decoration: none;
}

.nav-link.is-active {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -6px;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition-property: width, left;
  transition-duration: 260ms;
  transition-timing-function: ease;
}

.nav-link:hover::after {
  width: 100%;
  left: 0%;
}

/*
  CSS-only "active section" highlight:
  Uses :has() — no JavaScript.
*/
body:has(#projects:target) .nav-link[href="#projects"],
body:has(#contact:target) .nav-link[href="#contact"] {
  color: var(--text);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.06);
}

body:has(#projects:target) .nav-link[href="#projects"]::after,
body:has(#contact:target) .nav-link[href="#contact"]::after {
  width: 100%;
  left: 0%;
}

/* Extra clarity: focus state for nav links */
.nav-link:focus-visible {
  text-decoration: none;
}

/* =========================
   Hero
   ========================= */

.hero {
  padding: 62px 0 24px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 24px;
  align-items: start;
}

.hero-right {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-left {
  max-width: var(--reading-width);
}

.eyebrow {
  margin: 0 0 14px 0;
  color: var(--muted);
  font-weight: 650;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-size: 12px;
  line-height: 1.4;
}

.hero-title {
  margin: 0 0 18px 0;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.8px;
}

.accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-lede {
  margin: 0 0 18px 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 18px 0;
}

/* =========================
   Quick Facts (Bullets + Pills)
   ========================= */

.quick-facts {
  list-style: disc;
  padding-left: 22px;
  margin: 18px 0 0 0;
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.quick-facts li {
  display: list-item;
}

.pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  margin-right: 10px;
  color: var(--text);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* =========================
   Buttons
   ========================= */

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.10);
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  line-height: 1.2;
  transition-property: background, border-color, transform;
  transition-duration: 180ms;
  transition-timing-function: ease;
}

.btn:hover {
  text-decoration: none;
  background: rgba(255, 255, 255, 0.14);
}

.btn:active {
  transform: translateY(1px);
}

.btn-ghost {
  background: transparent;
}

/* =========================
   Headshot
   ========================= */

.headshot-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.headshot-frame {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.headshot-img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center;
}

.headshot-caption {
  padding-top: 12px;
}

.headshot-name {
  margin: 0;
  font-weight: 900;
  letter-spacing: -0.2px;
  font-size: 18px;
  line-height: 1.25;
}

.headshot-role {
  margin: 6px 0 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.headshot-note {
  margin: 10px 0 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: var(--text);
}

/* =========================
   Sections
   ========================= */

.section {
  padding: 52px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  margin-bottom: 18px;
}

.section-title {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.3px;
  line-height: 1.18;
}

.section-subtitle {
  margin: 10px 0 0 0;
  color: var(--muted);
  max-width: var(--reading-width);
  font-size: 16px;
  line-height: 1.75;
}

/* =========================
   Cards + Grids
   ========================= */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.card-title {
  margin: 0 0 10px 0;
  font-size: 18px;
  letter-spacing: -0.1px;
  line-height: 1.25;
}

.card-text {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.7;
  max-width: var(--reading-width);
}

.meta {
  margin: 12px 0 0 0;
  color: var(--faint);
  font-size: 13.5px;
  line-height: 1.5;
}

.project {
  min-height: 170px;
}

/* =========================
   Future / Coming Soon Section
   ========================= */

.future-section {
  padding: 80px 0;
  background: linear-gradient(
    135deg,
    rgba(110, 231, 255, 0.08),
    rgba(167, 139, 250, 0.08)
  );
  border-top: 1px solid var(--border);
}

.future-inner {
  max-width: 780px;
  text-align: center;
}

.future-title {
  margin: 0 0 20px 0;
  font-size: 32px;
  letter-spacing: -0.4px;
  line-height: 1.2;
}

.future-text {
  margin: 0 0 16px 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.future-highlight {
  margin-top: 28px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  font-size: 13px;
  color: var(--text);
}

/* =========================
   Footer
   ========================= */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  background: rgba(0, 0, 0, 0.18);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-text {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

/* =========================
   Responsive
   ========================= */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-list {
    justify-content: flex-start;
  }

  .headshot-img {
    height: 240px;
  }

  .hero {
    padding-top: 44px;
  }

  .section {
    padding: 46px 0;
  }
}