/* Original visual identity, reused from style.css. Layout remains in site.css. */
/* ── Design Tokens (dark default) ──────────────── */
:root {
  --bg: #0b0b10;
  --sf: rgba(255, 255, 255, 0.055);
  --sf-h: rgba(255, 255, 255, 0.09);
  --sf-a: rgba(255, 255, 255, 0.13);
  --bd: rgba(255, 255, 255, 0.082);
  --bd-h: rgba(255, 255, 255, 0.15);
  --tx: #e3e3ea;
  --tx2: rgba(227, 227, 234, 0.5);
  --tx3: rgba(227, 227, 234, 0.28);
  --ac: #9d9bfa;
  --ac-dim: rgba(157, 155, 250, 0.2);
  --ac2: #22d3ee;
  --ac2-dim: rgba(34, 211, 238, 0.15);
  --ac3: #4ade80;
  --ac4: #fb923c;
  --blur: blur(22px) saturate(160%);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --r-pill: 9999px;
  --r-lg: 18px;
  --r-md: 12px;
  --w: 860px;
}
[data-theme="light"] {
  --bg: #f2f2f6;
  --sf: rgba(255, 255, 255, 0.68);
  --sf-h: rgba(255, 255, 255, 0.85);
  --sf-a: rgba(255, 255, 255, 0.96);
  --bd: rgba(0, 0, 0, 0.07);
  --bd-h: rgba(0, 0, 0, 0.13);
  --tx: #18181f;
  --tx2: rgba(24, 24, 31, 0.72);
  --tx3: rgba(24, 24, 31, 0.52);
  --ac: #6461e8;
  --ac-dim: rgba(100, 97, 232, 0.18);
  --ac2: #0891b2;
  --ac2-dim: rgba(8, 145, 178, 0.12);
  --ac3: #16a34a;
  --ac4: #ea580c;
}

/* ── Floating Pill Nav ──────────────────────────── */
.nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 7px 14px;
  background: rgba(10, 10, 18, 0.76);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--bd-h);
  border-radius: var(--r-pill);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 8px 40px rgba(0, 0, 0, 0.55);
  white-space: nowrap;
  user-select: none;
}
[data-theme="dark"] .nav {
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 8px 40px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(255, 255, 255, 0.07);
}
[data-theme="light"] .nav {
  background: rgba(238, 238, 246, 0.82);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
}
.nav-logo img {
  height: 32px;
  width: 32px;
  object-fit: contain;
  border-radius: 5px;
}
.nav-logo span {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--tx);
}

.nav-sep {
  width: 1px;
  height: 16px;
  background: var(--bd-h);
  margin: 0 3px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 1px;
}
.nav-link {
  position: relative;
  font-size: 13px;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: var(--r-pill);
  color: var(--tx2);
  transition:
    color 0.15s,
    background 0.15s;
}
.nav-link:hover {
  color: var(--tx);
  background: var(--sf);
}
.nav-link.active {
  color: var(--tx);
  background: var(--sf-a);
}

.nav-actions {
  display: flex;
  gap: 2px;
  margin-left: 2px;
}
.nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--tx2);
  cursor: pointer;
  font-size: 11px;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition:
    color 0.15s,
    background 0.15s;
}
.nav-btn:hover {
  color: var(--tx);
  background: var(--sf);
}
.nav-btn svg {
  pointer-events: none;
}

/* ── Image Background ────────────────────────────── */
#ibg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.ibg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.ibg-img.ibg-active {
  opacity: 0.5;
}
[data-theme="light"] .ibg-img.ibg-active {
  opacity: 0.4;
}
#ibg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 20%,
    var(--bg) 82%
  );
}
@media (max-width: 768px) {
  #ibg {
    display: none;
  }
}

/* ── Shimmer link underline ──────────────────────── */
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 3px;
  left: 50%;
  right: 50%;
  height: 1px;
  background: var(--ac);
  border-radius: 2px;
  transition:
    left 0.22s var(--ease),
    right 0.22s var(--ease);
  opacity: 0.7;
}
.nav-link:hover::after {
  left: 13px;
  right: 13px;
}
.nav-link.active::after {
  left: 13px;
  right: 13px;
  opacity: 1;
}

:root,
[data-theme="dark"],
[data-theme="light"] {
  --text: var(--tx);
  --muted: var(--tx2);
  --line: var(--bd);
  --accent: var(--ac);
  --card: var(--sf);
  --soft: var(--sf-a);
}
body {
  background: var(--bg);
  color: var(--tx);
}
main,
.footer {
  position: relative;
  z-index: 2;
}
.nav {
  width: auto;
  min-height: 0;
  margin: 0;
  flex-wrap: nowrap;
}
.nav-links {
  margin-left: 0;
  gap: 1px;
  order: initial;
  width: auto;
  justify-content: initial;
}
.nav .nav-link {
  font-size: 13px;
  padding: 7px 16px;
  border-radius: var(--r-pill);
  color: var(--tx2);
  background: transparent;
  box-shadow: none;
}
.nav .nav-link.active {
  color: var(--tx);
  background: var(--sf-a);
}
.nav .nav-link:hover {
  background: var(--sf);
  color: var(--tx);
}
.nav .nav-actions {
  display: flex;
  gap: 2px;
  margin-left: 2px;
}
.nav .nav-btn {
  font-size: 11px;
  padding: 0;
  color: var(--tx2);
}
main.shell {
  padding-top: 90px;
  max-width: 1000px;
}
main.shell.page {
  padding-top: 110px;
}
.hero {
  padding-top: 44px;
  gap: 40px;
}
.hero h1 {
  background: linear-gradient(
    130deg,
    #edeaff 0%,
    var(--ac) 38%,
    #22d3ee 72%,
    #4ade80 100%
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="light"] .hero h1 {
  background-image: linear-gradient(
    130deg,
    #3730a3 0%,
    #6d28d9 38%,
    #0e7490 72%,
    #047857 100%
  );
}
.hero-panel,
.project-card,
.focus-card,
.contact-card,
.toc {
  background: var(--sf);
  border: 1px solid var(--bd);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 4px 20px rgba(0, 0, 0, 0.18);
}
.button {
  border-radius: var(--r-pill);
  background: var(--sf);
  border-color: var(--bd-h);
  backdrop-filter: var(--blur);
  color: var(--tx);
}
.button.primary {
  background: linear-gradient(130deg, var(--ac), #22d3ee);
  color: #0b0b10;
  border-color: transparent;
}
.project-art {
  background: var(--sf);
  height: 130px;
}
[data-theme="dark"] .project-art {
  background: var(--sf);
}
.demo-banner {
  position: relative;
  z-index: 2;
  margin-top: 80px;
  background: transparent;
  font-size: 10px;
}
.demo-banner ~ main.shell {
  padding-top: 12px;
}
@media (max-width: 640px) {
  .nav {
    max-width: calc(100vw - 16px);
    padding: 5px 8px;
    gap: 1px;
    min-height: 0;
  }
  .nav-logo {
    padding: 3px 10px;
  }
  .nav-logo span {
    display: none;
  }
  .nav-sep {
    display: none;
  }
  .nav .nav-link {
    padding: 6px 10px;
    font-size: 12.5px;
  }
  .nav .nav-btn {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }
  .nav-links {
    order: initial;
    width: auto;
  }
  main.shell {
    padding-top: 75px;
  }
  .hero {
    padding-top: 25px;
  }
}
@media (max-width: 390px) {
  .nav {
    padding: 4px 6px;
  }
  .nav .nav-link {
    padding: 5px 8px;
    font-size: 12px;
  }
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
  font-size: 12px;
}
.footer-contact > span {
  font-weight: 600;
  color: var(--tx);
}
.footer-links {
  flex-wrap: wrap;
}
.footer-contact a {
  overflow-wrap: anywhere;
}