:root {
  --bg: #0a0a0b;
  --surface: #161719;
  --surface-deep: #0d0e10;
  --border: #2a2b2e;
  --border-strong: #4a3a17;
  --text: #e8e6e3;
  --text-muted: #b8b6b1;
  --text-dim: #9a9892;
  --text-faint: #8a8a8a;
  --accent: #f5a623;
  --accent-bg: #1a1612;
  --live: #4ec9b0;
  --live-border: #2d4a44;
  --sql-keyword: #c586c0;
  --sql-fn: #4ec9b0;
  --sql-string: #f5a623;

  --font-display: 'Oxanium', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container-max: 920px;
  --container-pad: 28px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }

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

.mono { font-family: var(--font-mono); }
.display { font-family: var(--font-display); }

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 14px;
}

::selection { background: var(--accent); color: #0a0a0b; }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 11, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
}
.nav-brand::before { content: '◣ '; color: var(--accent); }
.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--text-dim);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); border-bottom-color: var(--accent); }

/* ===== Section spacing ===== */
.section { padding-top: 56px; padding-bottom: 24px; }
.section-title { font-size: 28px; line-height: 1.05; letter-spacing: -0.015em; margin-bottom: 16px; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  margin-top: 56px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-faint);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ===== Hero ===== */
.hero { padding-top: 64px; }
.hero-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 64px;
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin: 12px 0 14px;
}
.hero-tagline {
  font-size: 17px;
  line-height: 1.45;
  color: var(--text-muted);
  max-width: 580px;
}
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--live);
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--live-border);
  border-radius: 4px;
  margin-top: 18px;
}
.status-pill::before { content: '●'; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
@media (prefers-reduced-motion: reduce) {
  .status-pill::before { animation: none; }
}

/* ===== KPI grid ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 34px;
}
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  transition: border-color 0.15s;
}
.kpi:hover { border-color: var(--border-strong); }
.kpi-top {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
}
.kpi-val {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 32px;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.kpi-unit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-left: 6px;
}

.prose {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 680px;
}
.prose strong { color: var(--text); font-weight: 500; }

/* ===== Skills Grid ===== */
.skills-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 18px 24px;
  align-items: start;
  margin-top: 8px;
}
.skill-group-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  padding-top: 5px;
}
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pill {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  background: #131416;
}
.pill.strong {
  color: var(--accent);
  border-color: var(--border-strong);
  background: var(--accent-bg);
}

/* ===== Projects Grid ===== */
.proj-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.proj {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px;
  min-height: 130px;
  display: block;
  transition: border-color 0.15s, transform 0.15s;
}
.proj:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.proj-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.proj-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.2;
  margin-bottom: 6px;
}
.proj-desc {
  font-size: 12.5px;
  color: var(--text-dim);
  line-height: 1.5;
}
.badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  padding: 2px 7px;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.badge.live { color: var(--live); border-color: var(--live-border); }
.badge.planned { color: #d4a05e; border-color: var(--border-strong); }
.badge.work { color: var(--text-dim); border-color: var(--border); }

/* ===== BigQuery Embed ===== */
.bq-embed {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  height: 320px;
  overflow: hidden;
}
/* When live, replace .bq-placeholder with:
   <iframe src="LOOKER_STUDIO_PUBLIC_URL" style="width:100%;height:100%;border:0;" loading="lazy"></iframe>
*/
.bq-placeholder {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11px;
}
.bq-placeholder-title {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--text-dim);
}

/* ===== Contact Grid ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 24px;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  display: block;
  transition: border-color 0.15s;
}
.contact-card:hover { border-color: var(--border-strong); }
.contact-card.cta { background: var(--accent-bg); border-color: var(--border-strong); }
.contact-card.cta .contact-val { color: var(--accent); }
.contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.contact-val {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 14px;
  color: var(--text);
}

/* ===== Scroll reveal ===== */
.reveal { opacity: 0; transform: translateY(8px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-in { opacity: 1; transform: none; transition: none; }
  .status-pill::before { animation: none; }
}

/* ===== Responsive ===== */
@media (max-width: 767px) {
  :root { --container-pad: 18px; }

  .nav-links { gap: 14px; font-size: 10px; }
  .nav-links a { white-space: nowrap; }

  .hero-name { font-size: 44px; }
  .hero-tagline { font-size: 15px; }

  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kpi-val { font-size: 26px; }

  .skills-grid { grid-template-columns: 1fr; gap: 6px 0; }
  .skill-group-label { padding-top: 14px; }
  .skill-group-label:first-child { padding-top: 0; }

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

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

  .footer-inner { flex-direction: column; gap: 6px; text-align: center; }
  .section-title { font-size: 22px; }
  .bq-embed { height: 240px; }
}

@media (max-width: 480px) {
  .nav-links { display: none; }
}

/* ===== Case study page ===== */
.cs-container { max-width: 1100px; margin: 0 auto; padding: 0 var(--container-pad); }

.cs-header { padding: 56px 0 32px; border-bottom: 1px solid var(--border); }
.cs-crumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.cs-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 44px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.cs-subtitle { font-size: 16px; color: var(--text-muted); max-width: 720px; line-height: 1.5; }

.cs-meta { display: flex; gap: 28px; margin-top: 26px; padding-top: 22px; border-top: 1px solid #1a1b1d; flex-wrap: wrap; }
.cs-meta-item .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.cs-meta-item .val { font-family: var(--font-display); font-weight: 500; font-size: 14px; }

.cs-body { display: grid; grid-template-columns: 220px 1fr; gap: 56px; padding: 40px 0 80px; }
.cs-toc { position: sticky; top: 80px; align-self: start; }
.cs-toc .toc-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.cs-toc ul { list-style: none; padding: 0; margin: 0; }
.cs-toc li {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 0 7px 14px;
  border-left: 1px solid var(--border);
  color: var(--text-dim);
}
.cs-toc li.active { color: var(--accent); border-left-color: var(--accent); }
.cs-toc a { color: inherit; display: block; }

.cs-section { margin-bottom: 48px; scroll-margin-top: 80px; }
.cs-section-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.cs-section h2 { font-size: 26px; line-height: 1.1; margin-bottom: 16px; }
.cs-section p { font-size: 15px; line-height: 1.7; color: var(--text-muted); margin: 0 0 14px; max-width: 640px; }
.cs-section strong { color: var(--text); font-weight: 500; }
.cs-section ul { list-style: none; padding: 0; margin: 8px 0 14px; }
.cs-section ul li {
  font-size: 14.5px;
  color: var(--text-muted);
  padding: 5px 0 5px 24px;
  position: relative;
  line-height: 1.55;
  max-width: 640px;
}
.cs-section ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}

.code-block {
  background: var(--surface-deep);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  margin: 20px 0;
  max-width: 720px;
  overflow-x: auto;
  white-space: pre;
}
.sql-keyword { color: var(--sql-keyword); }
.sql-fn { color: var(--sql-fn); }
.sql-string { color: var(--sql-string); }
.sql-comment { color: var(--text-faint); font-style: italic; }

.outcome-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 640px;
  margin: 16px 0 8px;
}
.outcome {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}
.outcome .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.outcome .val { font-family: var(--font-display); font-weight: 700; font-size: 24px; color: var(--accent); line-height: 1; }

.link-row { display: flex; gap: 10px; max-width: 640px; flex-wrap: wrap; }
.link-card {
  flex: 1 1 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}
.link-card .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.link-card .val { font-family: var(--font-display); font-weight: 500; font-size: 13px; color: var(--accent); }

/* Case study mobile */
@media (max-width: 767px) {
  .cs-title { font-size: 32px; }
  .cs-body { grid-template-columns: 1fr; gap: 24px; }
  .cs-toc { position: static; }
  .cs-toc ul { display: flex; flex-wrap: wrap; gap: 6px; }
  .cs-toc li { border-left: none; padding: 4px 8px; border: 1px solid var(--border); border-radius: 3px; }
  .outcome-grid { grid-template-columns: 1fr 1fr; }
  .cs-meta { gap: 18px; }
}

/* In-development banner */
.dev-banner {
  background: var(--accent-bg);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 24px;
  max-width: 640px;
}
.dev-banner::before { content: '⚙ '; }

/* ===== Skip nav (accessibility) ===== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 0 0 4px 0;
  z-index: 100;
  transition: top 0.15s;
}
.skip-link:focus { top: 0; outline: none; }