:root {
  /* Light theme (default) — warm cream, brass + terracotta */
  --bg: #f4ecdc;
  --bg-elevated: #ffffff;
  --bg-elevated-2: #fbf4e4;
  --border: #e3d4b4;
  --border-hover: #c9ad7c;
  --text: #241c10;
  --text-dim: #6e5c41;
  --text-dimmer: #93815f;
  --text-body: #4a3b26;
  --accent: #a9762f;
  --accent-2: #b5502e;
  --accent-rgb: 169, 118, 47;
  --accent-2-rgb: 181, 80, 46;
  --btn-hover-bg: #f0e6d0;
  --btn-primary-text: #fbf4e4;
  --header-bg: rgba(244, 236, 220, 0.85);
  --hover-overlay: rgba(36, 28, 16, 0.035);
  --shadow-sm: 0 2px 10px rgba(60, 40, 10, 0.1);
  --shadow-md: 0 10px 26px rgba(60, 40, 10, 0.14);
  --shadow-md-hover: 0 14px 34px rgba(60, 40, 10, 0.18);
  --radius-lg: 14px;
  --radius-md: 10px;
}

:root[data-theme="dark"] {
  /* Dark theme — warm charcoal, brass + olive */
  --bg: #16130e;
  --bg-elevated: #201c15;
  --bg-elevated-2: #2a2419;
  --border: #3a2f20;
  --border-hover: #5c4b30;
  --text: #ede3ce;
  --text-dim: #b7a587;
  --text-dimmer: #7c6e56;
  --text-body: #d8cbb0;
  --accent: #c9a227;
  --accent-2: #8fa35e;
  --accent-rgb: 201, 162, 39;
  --accent-2-rgb: 143, 163, 94;
  --btn-hover-bg: #262019;
  --btn-primary-text: #16130e;
  --header-bg: rgba(22, 19, 14, 0.85);
  --hover-overlay: rgba(255, 255, 255, 0.025);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.4);
  --shadow-md-hover: 0 16px 40px rgba(0, 0, 0, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background:
    radial-gradient(680px circle at 12% -8%, rgba(var(--accent-rgb), 0.1), transparent 60%),
    radial-gradient(560px circle at 100% 0%, rgba(var(--accent-2-rgb), 0.08), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a { color: inherit; }

/* ---- Header / Nav ---- */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.nav-bar {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  letter-spacing: 0.02em;
  color: var(--text);
}

/* ---- Top nav ---- */
.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.top-nav a {
  position: relative;
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--text-dim);
  padding: 0.3rem 0;
  transition: color 0.15s;
}

.top-nav a:hover,
.top-nav a.active {
  color: var(--text);
}

.top-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

@media (max-width: 480px) {
  .top-nav { gap: 0.9rem; font-size: 0.85rem; }
  .top-nav a { font-size: 0.85rem; }
  .nav-bar { flex-wrap: wrap; row-gap: 0.6rem; }
}

/* ---- Theme toggle ---- */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text);
  transform: translateY(-1px);
}

.theme-toggle svg {
  width: 17px;
  height: 17px;
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline-flex; }

[data-theme="dark"] .theme-toggle .icon-sun { display: inline-flex; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---- Layout ---- */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

section { margin-bottom: 3.5rem; }

h1 {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  color: var(--text);
}
h2 { font-size: 1.6rem; margin-bottom: 1rem; }
h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }

.tagline { color: var(--text-dim); font-size: 1.2rem; margin-bottom: 1.5rem; }

p { color: var(--text-body); margin-bottom: 1rem; max-width: 65ch; }

.links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 0.65rem 1.3rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  border-color: var(--border-hover);
  background: var(--btn-hover-bg);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--btn-primary-text);
  border-color: transparent;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(var(--accent-rgb), 0.25);
}

.btn.primary:hover {
  opacity: 0.95;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(var(--accent-rgb), 0.35);
}

button.btn {
  font: inherit;
  cursor: pointer;
  min-width: 9.5rem;
}

/* ---- Skills ---- */
.skill-group {
  background: linear-gradient(180deg, var(--bg-elevated-2), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.skill-group:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.tag {
  font-size: 0.85rem;
  color: var(--text-dim);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: color 0.15s, border-color 0.15s;
}

.tag:hover {
  color: var(--text);
  border-color: var(--accent);
}

/* ---- Case study / project card (expandable) ---- */
.card {
  background: linear-gradient(180deg, var(--bg-elevated-2), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md-hover);
  transform: translateY(-3px);
  border-color: var(--border-hover);
}

.card > summary {
  cursor: pointer;
  list-style: none;
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.card > summary::-webkit-details-marker { display: none; }
.card > summary::marker { content: ""; }

.card > summary:hover { background: var(--hover-overlay); }

.card-summary-text h2 { margin-bottom: 0.4rem; }

.card-title-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
}

.card-title-row h2 { margin-bottom: 0.4rem; }

.read-time {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-dim);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  white-space: nowrap;
}

.card-summary-text .summary-line {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin: 0;
  max-width: 60ch;
}

.card-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--text-dimmer);
  transition: transform 0.2s ease;
}

.card[open] > summary .card-chevron { transform: rotate(180deg); }

.card-body {
  padding: 0.25rem 2rem 2rem;
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
  margin-top: 0.25rem;
}

.card .meta {
  font-size: 0.85rem;
  color: var(--text-dimmer);
  margin-bottom: 1rem;
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 1.5rem 0;
  font-size: 0.85rem;
}

.flow .step {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.9rem;
  color: var(--text-dim);
  background: var(--bg);
  box-shadow: var(--shadow-sm);
}

.flow .arrow { color: var(--text-dimmer); }

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.impact-grid .stat {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1rem;
  text-align: center;
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.impact-grid .stat:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.impact-grid .stat .num {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.impact-grid .stat .label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* ---- Screenshots ---- */
.screenshots {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.screenshot img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}

.screenshot .caption {
  font-size: 0.85rem;
  color: var(--text-dimmer);
  margin-top: 0.5rem;
  max-width: none;
}

/* Narrow screenshots (e.g. a Slack thread) shouldn't be stretched past their
   native resolution just to fill the card width — that's what causes blur. */
.screenshot.narrow img {
  width: auto;
  max-width: min(100%, 460px);
  margin: 0 auto;
}

.screenshot.narrow .caption {
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.screenshot-pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.screenshot-pair img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: block;
}

/* ---- Company context box ---- */
.company-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.company-box h4 {
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.company-box ul {
  margin: 0 0 0 1.1rem;
}

.company-box li {
  font-size: 0.9rem;
  color: var(--text-body);
  margin-bottom: 0.4rem;
}

/* ---- System prompt box ---- */
.prompt-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--text-body);
  white-space: pre-wrap;
  max-width: none;
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.85rem;
  color: var(--text-dimmer);
  border-top: 1px solid var(--border);
}

/* ---- Hero (homepage headshot) ---- */
.hero {
  display: flex;
  align-items: flex-start;
  gap: 1.75rem;
}

.headshot {
  flex-shrink: 0;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.hero-text { min-width: 0; }

@media (max-width: 560px) {
  .hero { flex-direction: column; align-items: center; text-align: center; }
  .hero-text p { max-width: 100%; }
}

/* ---- Personal / outside of work ---- */
.books-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.book-block {
  flex: 1 1 260px;
  min-width: 0;
}

.book-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dimmer);
  margin-bottom: 0.6rem;
}

.book-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: linear-gradient(180deg, var(--bg-elevated-2), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  max-width: 480px;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.book-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.book-cover {
  flex-shrink: 0;
  width: 68px;
  height: 100px;
  border-radius: 2px 5px 5px 2px;
  background: linear-gradient(135deg, #2e2013, #1a1108);
  border: 1px solid var(--border-hover);
  box-shadow: -3px 0 0 rgba(0, 0, 0, 0.35) inset, var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.4rem 0.3rem;
}

.book-cover .cover-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.2;
}

.book-cover .cover-rule {
  width: 16px;
  height: 1px;
  background: var(--border-hover);
  margin: 0.35rem 0;
}

.book-cover .cover-author {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.48rem;
  color: var(--text-dimmer);
  line-height: 1.2;
}

.book-info .book-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.book-info .book-subtitle {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}

.book-info .book-author {
  color: var(--text-dimmer);
  font-size: 0.8rem;
  margin: 0;
}

/* ---- Card fade-in on scroll ---- */
.card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card.in-view {
  opacity: 1;
  transform: translateY(0);
}

.card.in-view:hover {
  transform: translateY(-3px);
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: box-shadow 0.25s ease, border-color 0.25s ease; opacity: 1; transform: none; }
}

/* ---- Print (resume) ---- */
@media print {
  body { background: #fff !important; color: #000; }
  header, footer, .links, .card-chevron, .theme-toggle { display: none !important; }
  main { max-width: 100%; padding: 0.5rem 0; }
  h1, h2, h3, h4, .job-company, .book-info .book-title { color: #000 !important; }
  .tagline, p, .job-dates, .role-dates, .book-info .book-subtitle, .book-info .book-author, .book-label, .read-time { color: #333 !important; }
  a { color: #000 !important; text-decoration: underline; }
  .job { border-left-color: #999; }
  .job::before { background: #000 !important; box-shadow: none !important; }
  .skill-group, .card, .company-box, .prompt-box, .impact-grid .stat, .flow .step, .tag, .book-card, .book-cover, .read-time {
    box-shadow: none !important;
    border-color: #ccc !important;
    background: #fff !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .impact-grid .stat .num {
    -webkit-text-fill-color: #000 !important;
    background: none !important;
    color: #000 !important;
  }
  .headshot { border-color: #ccc; }
}

/* ---- Resume ---- */
main ul {
  margin: 0 0 1rem 1.25rem;
  color: var(--text-body);
  max-width: 65ch;
}

main li { margin-bottom: 0.4rem; }

.job {
  border-left: 2px solid var(--border);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
  position: relative;
}

.job::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.15), 0 0 12px rgba(var(--accent-rgb), 0.4);
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.15rem;
}

.job-title { font-weight: 600; font-size: 1.05rem; }
.job-dates { color: var(--text-dimmer); font-size: 0.8rem; white-space: nowrap; }
.job-company { color: var(--accent); font-size: 0.9rem; margin-bottom: 0.6rem; }

.resume-section { margin-bottom: 2.5rem; }

.roles {
  list-style: none;
  margin: 0 0 0.85rem 0;
  padding: 0;
  max-width: none;
}

.roles li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dimmer);
  padding: 0.15rem 0;
}

.roles li > span:first-child {
  flex: 1 1 auto;
}

.role-dates {
  color: var(--text-dimmer);
  font-size: 0.8rem;
  white-space: nowrap;
  flex-shrink: 0;
  text-align: right;
}