:root,
:root[data-theme="dark"] {
  --bg-0: #0d0f14;
  --bg-1: #14171f;
  --bg-2: #1a1d26;
  --bg-3: #232733;
  --fg: #f5f7fa;
  --muted: rgba(245, 247, 250, 0.7);
  --dim: rgba(245, 247, 250, 0.5);
  --accent: #6366f1;
  --accent-2: #818cf8;
  --glass-bg: rgba(255, 255, 255, 0.025);
  --glass-bg-hover: rgba(255, 255, 255, 0.045);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.18);
  --nav-bg: rgba(13, 15, 20, 0.85);
  --surface-tint: rgba(255, 255, 255, 0.04);
  --surface-tint-border: rgba(255, 255, 255, 0.08);
  --primary-ink: #ffffff;
}

:root[data-theme="light"] {
  --bg-0: #ffffff;
  --bg-1: #f7f8fa;
  --bg-2: #eef0f4;
  --bg-3: #d6d9e0;
  --fg: #0d0f14;
  --muted: rgba(13, 15, 20, 0.68);
  --dim: rgba(13, 15, 20, 0.48);
  --accent: #4f46e5;
  --accent-2: #4338ca;
  --glass-bg: rgba(0, 0, 0, 0.025);
  --glass-bg-hover: rgba(0, 0, 0, 0.05);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-border-hover: rgba(0, 0, 0, 0.22);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --surface-tint: rgba(0, 0, 0, 0.04);
  --surface-tint-border: rgba(0, 0, 0, 0.08);
  --primary-ink: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100dvh;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "cv11", "ss01";
  color: var(--fg);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
  transition: background 0.25s ease, color 0.25s ease;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--bg-0);
}

.orb {
  display: none;
}
.orb {
  opacity: 0.5;
}
.orb-a {
  width: 520px;
  height: 520px;
  top: -120px;
  left: -120px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
  animation: drift-a 22s ease-in-out infinite;
}
.orb-b {
  width: 460px;
  height: 460px;
  top: 10%;
  right: -160px;
  background: radial-gradient(circle, #22d3ee 0%, transparent 70%);
  opacity: 0.35;
  animation: drift-b 28s ease-in-out infinite;
}
.orb-c {
  width: 600px;
  height: 600px;
  bottom: -200px;
  left: 30%;
  background: radial-gradient(circle, #818cf8 0%, transparent 70%);
  opacity: 0.4;
  animation: drift-c 30s ease-in-out infinite;
}

@keyframes drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(80px, 60px) scale(1.1); }
}
@keyframes drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-100px, 80px) scale(0.9); }
}
@keyframes drift-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, -80px) scale(1.15); }
}

/* Layout */
.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
}

/* Header */
header.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  margin-bottom: 4rem;
  border-radius: 12px;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  position: sticky;
  top: 1rem;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--fg);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  object-fit: contain;
  display: block;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 0;
  box-sizing: border-box;
}

nav.links {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

nav.links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  text-align: center;
  transition: color 0.2s, background 0.2s;
}

nav.links a:hover {
  color: var(--fg);
  background: var(--glass-bg-hover);
}

nav.links a.current {
  color: var(--fg);
  background: var(--glass-bg);
}

nav.links .gh {
  margin-left: 0.25rem;
  padding: 0;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--glass-bg);
  color: var(--fg);
  border: 1px solid var(--glass-border);
  gap: 0;
}

nav.links .gh:hover {
  background: var(--glass-bg-hover);
  color: var(--fg);
  border-color: var(--glass-border-hover);
}

nav.links .gh .linkedin-mark,
nav.links .gh .github-mark {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Hero */
.hero {
  text-align: center;
  padding: 3rem 1rem 5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  margin-bottom: 1.75rem;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: 0 auto 1.5rem;
  max-width: 24ch;
  color: var(--fg);
}

h1 .accent {
  color: var(--accent-2);
  font-style: italic;
}

.lede {
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.6;
  max-width: 56ch;
  margin: 0 auto 2.25rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Mission statement (DM Serif Display) */
.mission-statement {
  font-family: "DM Serif Display", Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: #b8a9e8; /* muted lavender */
  max-width: 60ch;
  margin: 2.5rem auto 1.75rem;
  text-align: center;
}
:root[data-theme="light"] .mission-statement {
  color: #6b5fb0;
}
.mission-statement .pillar {
  font-style: italic;
  color: #e0d5ff; /* brighter lavender */
}
:root[data-theme="light"] .mission-statement .pillar {
  color: #4f46e5;
}
.mission-statement .label {
  font-style: normal;
  color: var(--muted);
  font-size: 0.7em;
  letter-spacing: 0.04em;
}

/* Pillar pill tags */
.pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin: 0 auto 0;
}
.pillar-pill {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  color: #c4b5fd; /* purple */
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(129, 140, 248, 0.25);
  white-space: nowrap;
}
:root[data-theme="light"] .pillar-pill {
  color: #4f46e5;
  background: rgba(79, 70, 229, 0.06);
  border-color: rgba(79, 70, 229, 0.2);
}

@media (max-width: 540px) {
  .mission-statement {
    font-size: 1.2rem;
    margin-top: 2rem;
    padding: 0 0.25rem;
  }
  .pillar-pill {
    font-size: 0.72rem;
    padding: 0.4rem 0.8rem;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-ink);
  font-weight: 600;
}
.btn-primary:hover {
  transform: translateY(-1px);
  background: var(--accent-2);
}

/* Cards grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.card {
  position: relative;
  padding: 1.75rem;
  border-radius: 12px;
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s, border-color 0.2s;
}

.card:hover {
  background: var(--bg-2);
  border-color: var(--glass-border-hover);
}

.card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.22);
  font-size: 1.05rem;
  margin-bottom: 1.1rem;
  color: var(--accent-2);
}
.card .icon svg,
.card .icon img {
  width: 20px;
  height: 20px;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.card .more {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
}

.coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dim);
  background: var(--surface-tint);
  border: 1px solid var(--surface-tint-border);
  border-radius: 999px;
  cursor: not-allowed;
  user-select: none;
}

.coming-soon::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--dim);
}

/* Disable interaction below the top-level category */
.card[aria-disabled="true"] {
  cursor: default;
}
.card[aria-disabled="true"]:hover {
  transform: none;
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-left: 0.25rem;
  padding: 0;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--muted);
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.theme-toggle:hover {
  color: var(--fg);
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
}
.theme-toggle .moon { display: none; }
.theme-toggle .sun { display: block; }
:root[data-theme="light"] .theme-toggle .sun { display: none; }
:root[data-theme="light"] .theme-toggle .moon { display: block; }

/* Section */
section.block {
  margin-top: 5rem;
}

.section-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 0.6rem;
}

.section-head p {
  color: var(--muted);
  max-width: 50ch;
  margin: 0 auto;
  line-height: 1.6;
}

/* Note panel */
.note {
  margin-top: 4rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.note .badge {
  flex-shrink: 0;
  padding: 0.25rem 0.65rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-2);
  border-radius: 999px;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* About page */
.page-about .hero {
  padding: 1.5rem 1rem 2rem;
}
.page-about .eyebrow {
  margin-bottom: 2rem;
}
.page-about .mission-statement {
  font-size: clamp(1.65rem, 4.2vw, 2.85rem);
  line-height: 1.35;
  max-width: none;
  margin: 0 auto 2rem;
  color: var(--fg);
}
.page-about .mission-statement .pillar {
  color: var(--accent-2);
  font-style: italic;
}
.page-about .mission-statement .label {
  display: block;
  font-family: "Inter", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--muted);
}
.page-about section.block {
  margin-top: 3.5rem;
}

.about-body {
  max-width: 62ch;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  text-align: center;
}
.about-body p + p { margin-top: 1.25rem; }

.about-signoff {
  font-style: italic;
  margin-top: 1.5rem !important;
}

@media (max-width: 540px) {
  .page-about .mission-statement {
    font-size: 1.5rem;
  }
  .page-about section.block {
    margin-top: 2.5rem;
  }
  .about-body { font-size: 0.98rem; }
}

/* Code blocks (skill install pages) */
pre.code,
.code-block {
  margin: 0;
  padding: 1rem 1.15rem;
  background: var(--bg-1);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  overflow-x: auto;
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--fg);
}
pre.code code {
  background: transparent;
  padding: 0;
  font-size: inherit;
  color: inherit;
}
code {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
  padding: 0.12em 0.4em;
  border-radius: 5px;
  background: var(--surface-tint);
  border: 1px solid var(--surface-tint-border);
  color: var(--fg);
}

/* Skill page layout */
.skill-prose {
  max-width: 70ch;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}
.skill-prose p { margin: 0 0 1rem; }
.skill-prose h3 {
  color: var(--fg);
  margin: 2rem 0 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.skill-prose ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}
.skill-prose li { margin: 0.35rem 0; }
.skill-prose a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(129, 140, 248, 0.4);
}
.skill-prose a:hover { border-bottom-color: var(--accent-2); }

/* Install steps */
.install-step {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin: 1.25rem 0 1.75rem;
}
.install-step .step-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.install-step .step-label .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-2);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 6px;
}

/* Meta tag chips (e.g., "Claude Code", "FAR", "RFO") */
.meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 0 0 1.5rem;
}
.meta-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.75rem;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: var(--surface-tint);
  border: 1px solid var(--surface-tint-border);
  border-radius: 999px;
}

/* Download button group */
.download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: center;
  margin: 0.5rem 0 0.5rem;
}
.btn-secondary {
  background: var(--glass-bg);
  color: var(--fg);
  border: 1px solid var(--glass-border);
  font-weight: 500;
}
.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}

/* Tabs (OS-specific install) */
.tabs {
  margin: 1rem 0 0.75rem;
}
.tab-buttons {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  background: var(--surface-tint);
  border: 1px solid var(--surface-tint-border);
  border-radius: 10px;
  margin-bottom: 0.85rem;
}
.tab-buttons button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.45rem 0.95rem;
  border-radius: 7px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.tab-buttons button:hover { color: var(--fg); }
.tab-buttons button.active {
  color: var(--fg);
  background: var(--bg-2);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Footer */
footer {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  color: var(--dim);
  font-size: 0.85rem;
}

.footer-disclaimer {
  margin: 0 auto;
  color: var(--dim);
  opacity: 0.75;
  font-size: 0.68rem;
  line-height: 1.55;
  max-width: 80ch;
  text-align: center;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

footer a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1rem;
}
footer a:hover {
  color: var(--fg);
}

/* Responsive */
@media (max-width: 640px) {
  nav.links a:not(.gh) {
    display: none;
  }
  header.nav {
    padding: 0.6rem 0.75rem 0.6rem 1rem;
    margin-bottom: 2.5rem;
  }
  .hero {
    padding: 1.5rem 0 3rem;
  }
  .shell {
    padding: 1rem 1rem 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orb { animation: none; }
}