/* ============================================
   TOKENS
============================================ */
:root {
  --bg: #0B0B0D;
  --bg-elevated: #16161A;
  --bg-elevated-2: #1D1D22;
  --border: #26262C;
  --border-soft: #1D1D22;

  --text-primary: #F2F1ED;
  --text-secondary: #9C9CA3;
  --text-tertiary: #68686F;

  --accent: #F05138;
  --accent-bright: #FF6B4A;
  --accent-dim: rgba(240, 81, 56, 0.14);
  --accent-dim-2: rgba(240, 81, 56, 0.06);

  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --maxw: 860px;
  --edge: 24px;
}

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

details {
  margin: 0;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* subtle film-grain texture, purely decorative, very low opacity */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================
   TOPBAR
============================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px var(--edge);
  background: rgba(11, 11, 13, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}

.topbar__mark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
  border: 1px solid var(--border);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.topbar__mark:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14.5px;
  color: var(--text-secondary);
}
.topbar__nav a:not(.topbar__cta) {
  position: relative;
  transition: color 0.2s ease;
}
.topbar__nav a:not(.topbar__cta):hover {
  color: var(--text-primary);
}
.topbar__cta {
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.topbar__cta:hover {
  border-color: var(--accent);
  background: var(--accent-dim-2);
}

.topbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.topbar__burger span {
  width: 20px;
  height: 1.5px;
  background: var(--text-primary);
  margin-bottom: 5px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.topbar__burger span:last-child { margin-bottom: 0; }
.topbar__burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.topbar__burger.open span:nth-child(2) { opacity: 0; }
.topbar__burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 73px;
  left: 0; right: 0;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  padding: 12px var(--edge) 24px;
  z-index: 49;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.mobile-nav a {
  padding: 14px 4px;
  font-size: 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-soft);
}
.mobile-nav a:last-child { border-bottom: none; color: var(--accent); }

/* ============================================
   LAYOUT PRIMITIVES
============================================ */
main > section,
.footer__row {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--edge);
  padding-right: var(--edge);
}

#work,
#writing,
#about {
  scroll-margin-top: 76px;
}

.divider {
  max-width: var(--maxw);
  margin: 0 auto;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent) 10%,
    var(--accent) 90%,
    transparent
  );
  opacity: 0.6;
}

.eyebrow {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.section-label {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 36px;
  padding-top: 40px;
}

/* ============================================
   HERO
============================================ */
.hero {
  position: relative;
  padding: 100px var(--edge) 72px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.hero__name,
.hero__tagline,
.hero__meta,
.hero__links,
.eyebrow {
  position: relative;
  z-index: 1;
}

.hero__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin-bottom: 22px;
}

.hero__tagline {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.55;
  margin-bottom: 28px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 13px;
  margin-bottom: 40px;
}
.hero__meta .dot { color: var(--text-tertiary); }

.hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 20px;
  border-radius: 100px;
  font-size: 14.5px;
  font-weight: 500;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}
.btn--primary {
  background: var(--accent);
  color: #0B0B0D;
  font-weight: 600;
}
.btn--primary:hover {
  background: var(--accent-bright);
  transform: translateY(-1px);
}
.btn--ghost {
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* ============================================
   STATS STRIP
============================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 56px;
  padding-bottom: 56px;
}

.stat__label {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-bottom: 10px;
}

.stat__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  letter-spacing: -0.02em;
}

.stat__caption {
  color: var(--text-secondary);
  font-size: 13.5px;
  margin-top: 4px;
}

/* ============================================
   WORK / CASE STUDIES
============================================ */
.work { padding-bottom: 0; }

.case {
  padding-bottom: 0;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border-soft);
}

.case__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 1.9rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 10px;
  max-width: 620px;
}

.case__role {
  color: var(--text-tertiary);
  font-size: 14px;
  margin-bottom: 10px;
}

.case__store-link {
  display: inline-flex;
  align-items: center;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
  margin-bottom: 24px;
}
.case__store-link:hover {
  color: var(--accent-bright);
  border-color: var(--accent-bright);
}

.case__summary {
  color: var(--text-secondary);
  font-size: 15.5px;
  line-height: 1.7;
  max-width: 640px;
  margin-bottom: 32px;
}

.case__results {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 28px;
}

.result {
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 18px 16px;
}

.result__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.result__num .arrow {
  color: var(--accent);
  font-weight: 400;
  font-size: 0.9em;
}

.result__label {
  color: var(--text-tertiary);
  font-size: 11.5px;
  margin-top: 6px;
}

/* deep dive */
.deepdive {
  border-top: 1px solid var(--border-soft);
  padding: 20px 0;
}

.deepdive__toggle {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  width: fit-content;
  color: var(--text-secondary);
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1;
  transition: color 0.2s ease;
  user-select: none;
}
.deepdive__toggle::-webkit-details-marker { display: none; }
.deepdive__toggle::marker { content: ""; display: none; }
.deepdive__toggle:hover { color: var(--accent); }

.deepdive__chev {
  display: block;
  flex-shrink: 0;
  margin-left: 8px;
  color: var(--text-tertiary);
  transition: transform 0.25s ease;
}
details[open] .deepdive__chev { transform: rotate(180deg); }

.deepdive__body {
  padding-top: 20px;
  max-width: 660px;
}
.deepdive__body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 16px;
}
.deepdive__body p:last-child { margin-bottom: 0; }
.deepdive__body strong { color: var(--text-primary); font-weight: 600; }
.deepdive__body em { color: var(--accent); font-style: normal; }

.inline-link {
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.inline-link:hover {
  color: var(--accent-bright);
  border-color: var(--accent-bright);
}

/* ============================================
   WRITING
============================================ */
.writing { padding-bottom: 64px; }

.article {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.article:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.article__text h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.article__text p {
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.6;
  max-width: 560px;
}
.article__meta {
  color: var(--text-tertiary);
  font-size: 12.5px;
  margin-top: 12px;
}
.article__arrow {
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
}

/* ============================================
   ABOUT
============================================ */
.about { padding-bottom: 72px; }

.about__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
}

.about__text p {
  color: var(--text-secondary);
  font-size: 15.5px;
  line-height: 1.75;
  margin-bottom: 18px;
  max-width: 480px;
}
.about__text p:last-child { margin-bottom: 0; }

.about__skills {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.skillgroup__label {
  color: var(--accent);
  font-size: 11.5px;
  margin-bottom: 6px;
}
.skillgroup p:not(.skillgroup__label) {
  color: var(--text-secondary);
  font-size: 14.5px;
  line-height: 1.5;
}

/* ============================================
   FOOTER
============================================ */
.footer { padding-bottom: 48px; }

.footer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 28px;
}
.footer__row > .mono {
  color: var(--text-tertiary);
  font-size: 13px;
}
.footer__links {
  display: flex;
  gap: 24px;
  font-size: 13.5px;
  color: var(--text-secondary);
}
.footer__links a {
  transition: color 0.2s ease;
}
.footer__links a:hover { color: var(--accent); }

/* ============================================
   FOCUS STATES (a11y)
============================================ */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 860px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 720px) {
  .topbar__nav { display: none; }
  .topbar__burger { display: flex; }
  .mobile-nav { display: flex; }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 32px;
  }

  .case__results {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero { padding-top: 72px; }
}

@media (max-width: 480px) {
  :root { --edge: 20px; }

  .hero__name { font-size: 2.4rem; }
  .hero__links { gap: 10px; }
  .btn { padding: 10px 16px; font-size: 14px; }

  .stats { grid-template-columns: repeat(2, 1fr); }

  .article {
    flex-direction: column;
    align-items: flex-start;
  }
  .article__arrow { display: none; }

  .footer__row {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer__links { flex-wrap: wrap; gap: 16px 20px; }
}