/* Casey Petersen — caseypetersen.com
   Swiss-dark operator. Clean hierarchy. Ages well without constant updates. */

:root {
  --bg: #070808;
  --bg-elevated: #0e0f10;
  --bg-card: #121314;
  --bg-card-hover: #161819;
  --ink: #f4f1ea;
  --ink-soft: #c8c4bb;
  --ink-muted: #8a8680;
  --ink-faint: #5c5954;
  --line: rgba(244, 241, 234, 0.08);
  --line-strong: rgba(244, 241, 234, 0.14);
  --accent: #c9a27a;
  --accent-soft: rgba(201, 162, 122, 0.14);
  --accent-hover: #dbb892;
  --success: #6f9f7a;
  --radius: 10px;
  --radius-sm: 6px;
  --max: 1120px;
  --measure: 68ch;
  --nav-h: 64px;
  --font: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-feature-settings: "ss01", "cv01", "liga";
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: -0.011em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(201, 162, 122, 0.07), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 255, 255, 0.03), transparent 50%);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }
button { font: inherit; }

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  z-index: 100;
}
.skip:focus { left: 0.75rem; top: 0.75rem; }

/* ——— Layout ——— */
.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

.section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  gap: 0.75rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
  max-width: 40rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1, h2, h3, h4 {
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.12;
  text-wrap: balance;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 6.5vw, 4.25rem);
  letter-spacing: -0.045em;
  font-weight: 500;
}

h2 {
  font-size: clamp(1.65rem, 3.4vw, 2.25rem);
}

h3 {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

p { margin: 0; }
.lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 38rem;
  text-wrap: pretty;
}

.muted { color: var(--ink-muted); }
.faint { color: var(--ink-faint); }

/* ——— Nav ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(7, 8, 8, 0.78);
  border-bottom: 1px solid var(--line);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 5px;
  background: linear-gradient(145deg, var(--accent), #8f6d4a);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
  flex-shrink: 0;
}
.brand-text { font-size: 0.98rem; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--ink-muted);
  padding: 0.35rem 0;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none !important;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--bg) !important;
  background: var(--ink);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-cta:hover {
  background: var(--accent) !important;
  color: var(--bg) !important;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: currentColor;
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: currentColor;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.25rem;
    background: rgba(7, 8, 8, 0.97);
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid var(--line);
  }
  .nav-cta {
    margin-top: 0.75rem;
    justify-content: center;
  }
}

/* ——— Hero ——— */
.hero {
  padding: clamp(3.5rem, 10vw, 7rem) 0 clamp(3rem, 7vw, 5rem);
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}

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

.hero h1 {
  margin-top: 0.85rem;
  margin-bottom: 1.1rem;
}

.hero .role {
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  color: var(--ink-soft);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  max-width: 28ch;
}

.hero-copy {
  color: var(--ink-muted);
  max-width: 36rem;
  font-size: 1.05rem;
  line-height: 1.65;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.7rem 1.15rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none !important;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
  cursor: pointer;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg) !important;
}
.btn-primary:hover {
  background: var(--accent);
  color: var(--bg) !important;
}
.btn-ghost {
  background: transparent;
  color: var(--ink) !important;
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-hover) !important;
  background: var(--accent-soft);
}

.proof-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}

.proof-panel .label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}

.proof-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.proof-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.proof-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.metric {
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1.1;
  min-width: 4.5rem;
}

.metric-note {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* ——— Strip ——— */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 1.1rem 0;
  position: relative;
  z-index: 1;
}
.strip-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  align-items: center;
  justify-content: space-between;
  color: var(--ink-muted);
  font-size: 0.9rem;
}
.strip strong {
  color: var(--ink-soft);
  font-weight: 500;
}

/* ——— Work cards ——— */
.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) {
  .work-grid { grid-template-columns: 1fr; }
}

.work-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.35rem 1.35rem 1.25rem;
  text-decoration: none !important;
  color: inherit;
  min-height: 100%;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), transform 0.2s var(--ease);
}
.work-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--line-strong);
  color: inherit;
  transform: translateY(-2px);
}

.work-card .tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.work-card h3 {
  font-size: 1.2rem;
  margin-top: 0.15rem;
}

.work-card p {
  color: var(--ink-muted);
  font-size: 0.95rem;
  flex: 1;
}

.chain {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.25rem;
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--ink-faint);
}
.chain span {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.5rem;
}
.chain b {
  color: var(--ink-muted);
  font-weight: 500;
}

.card-link {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
}
.work-card:hover .card-link { color: var(--accent-hover); }

/* ——— Writing ——— */
.writing-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
}

.writing-item {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 1rem 1.25rem;
  align-items: baseline;
  padding: 1.25rem 1.35rem;
  text-decoration: none !important;
  color: inherit;
  border-top: 1px solid var(--line);
  transition: background 0.15s var(--ease);
}
.writing-item:first-child { border-top: 0; }
.writing-item:hover {
  background: var(--bg-card-hover);
  color: inherit;
}
.writing-item time {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}
.writing-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
}
.writing-item p {
  color: var(--ink-muted);
  font-size: 0.92rem;
  max-width: 48rem;
}
.writing-item .go {
  color: var(--ink-faint);
  font-size: 0.9rem;
  align-self: center;
}
.writing-item:hover .go { color: var(--accent); }

@media (max-width: 700px) {
  .writing-item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .writing-item .go { display: none; }
}

/* ——— About / two-col ——— */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
}

.prose {
  color: var(--ink-soft);
  max-width: var(--measure);
}
.prose p + p { margin-top: 1rem; }
.prose strong { color: var(--ink); font-weight: 500; }

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line-strong);
}
.timeline li {
  position: relative;
  padding: 0 0 1.35rem 1.25rem;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 0.4rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}
.timeline .org {
  font-weight: 500;
  color: var(--ink);
  font-size: 0.98rem;
}
.timeline .role {
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-top: 0.15rem;
}
.timeline .when {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-top: 0.25rem;
  letter-spacing: 0.04em;
}

/* ——— Consulting ——— */
.consult-box {
  display: grid;
  grid-template-columns: 1.3fr auto;
  gap: 1.5rem;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(201, 162, 122, 0.1), transparent 55%),
    var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  padding: clamp(1.4rem, 3vw, 2rem);
}
@media (max-width: 700px) {
  .consult-box { grid-template-columns: 1fr; }
}
.consult-box h2 { margin-bottom: 0.65rem; }
.consult-box p {
  color: var(--ink-muted);
  max-width: 40rem;
}

/* ——— Page (inner) ——— */
.page-hero {
  padding: clamp(2.5rem, 6vw, 4rem) 0 1.5rem;
  position: relative;
  z-index: 1;
}
.page-hero .back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
.page-hero .back:hover { color: var(--accent-hover); }
.page-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.85rem);
  max-width: 18ch;
  margin: 0.5rem 0 1rem;
}
.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.article {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(4rem, 8vw, 6rem);
}
.article-body {
  max-width: 40rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}
.article-body h2 {
  margin: 2.4rem 0 0.85rem;
  font-size: 1.35rem;
  color: var(--ink);
}
.article-body h3 {
  margin: 1.8rem 0 0.65rem;
  color: var(--ink);
}
.article-body p + p { margin-top: 1.05rem; }
.article-body ul, .article-body ol {
  margin: 1rem 0;
  padding-left: 1.25rem;
  color: var(--ink-soft);
}
.article-body li + li { margin-top: 0.4rem; }
.article-body strong { color: var(--ink); font-weight: 500; }
.article-body blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 0 0.25rem 1.1rem;
  border-left: 2px solid var(--accent);
  color: var(--ink-soft);
  font-size: 1.08rem;
}
.article-body code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(255,255,255,0.05);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.callout {
  margin: 1.75rem 0;
  padding: 1.1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.callout .kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.45rem;
}
.callout p { color: var(--ink-soft); font-size: 0.98rem; }

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin: 1.75rem 0;
}
@media (max-width: 700px) {
  .stage-grid { grid-template-columns: 1fr; }
}
.stage {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
}
.stage .k {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.45rem;
}
.stage p {
  font-size: 0.92rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

/* ——— Footer ——— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.75rem;
  position: relative;
  z-index: 1;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: start;
}
.footer-brand {
  font-weight: 500;
  letter-spacing: -0.02em;
}
.footer-meta {
  color: var(--ink-faint);
  font-size: 0.88rem;
  margin-top: 0.35rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-links a:hover { color: var(--accent-hover); }

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}