/* =========================================================
   Boomworks - Design System
   Modern minimal / tech. Single source of truth.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  /* Colour - ink-and-paper with one confident accent */
  --ink-900: #0B0D10;
  --ink-800: #13161B;
  --ink-700: #1B1F26;
  --ink-600: #2A2F38;
  --ink-500: #3D434E;
  --ink-400: #6B7280;
  --ink-300: #9CA3AF;
  --ink-200: #D1D5DB;
  --ink-100: #E8E9EA;
  --ink-50:  #F4F4F1;
  --paper:   #FAFAF7;

  --accent:        #FF5B2A;   /* boom - used sparingly */
  --accent-soft:   #FFE4D9;
  --accent-deep:   #C7401A;
  --signal:        #7CFFB2;   /* AI / automation cue */

  /* Semantic */
  --bg:           var(--paper);
  --bg-elev:      #FFFFFF;
  --bg-inverse:   var(--ink-900);
  --fg:           var(--ink-900);
  --fg-muted:     var(--ink-400);
  --fg-inverse:   var(--ink-50);
  --border:       #E5E5E0;
  --border-strong:#D1D1CB;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Type scale (fluid) */
  --fs-xs:   clamp(0.75rem,  0.72rem + 0.15vw, 0.82rem);
  --fs-sm:   clamp(0.875rem, 0.85rem + 0.15vw, 0.95rem);
  --fs-base: clamp(1rem,     0.97rem + 0.2vw,  1.075rem);
  --fs-lg:   clamp(1.125rem, 1.08rem + 0.3vw,  1.25rem);
  --fs-xl:   clamp(1.35rem,  1.25rem + 0.5vw,  1.6rem);
  --fs-2xl:  clamp(1.75rem,  1.5rem + 1vw,    2.25rem);
  --fs-3xl:  clamp(2.25rem,  1.8rem + 2vw,    3.25rem);
  --fs-4xl:  clamp(2.75rem,  2rem + 3.5vw,    4.5rem);
  --fs-5xl:  clamp(3.5rem,   2.5rem + 5vw,    6rem);

  --lh-tight: 1.1;
  --lh-snug:  1.25;
  --lh-base:  1.55;
  --lh-loose: 1.7;

  /* Space */
  --s-1:  0.25rem;
  --s-2:  0.5rem;
  --s-3:  0.75rem;
  --s-4:  1rem;
  --s-5:  1.5rem;
  --s-6:  2rem;
  --s-7:  3rem;
  --s-8:  4rem;
  --s-9:  6rem;
  --s-10: 8rem;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(11,13,16,.06), 0 1px 3px rgba(11,13,16,.04);
  --shadow-md: 0 4px 12px rgba(11,13,16,.06), 0 2px 4px rgba(11,13,16,.04);
  --shadow-lg: 0 20px 40px rgba(11,13,16,.10), 0 8px 16px rgba(11,13,16,.06);

  /* Motion */
  --ease: cubic-bezier(.2,.8,.2,1);
  --dur-fast: 120ms;
  --dur:      220ms;
  --dur-slow: 420ms;

  /* Layout */
  --container: 1200px;
  --container-narrow: 880px;
  --nav-h: 72px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 0; top: 0;
  padding: 0.75rem 1rem;
  background: var(--ink-900);
  color: var(--paper);
  font-weight: 500;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  transform: translateY(-110%);
  transition: transform var(--dur) var(--ease);
  z-index: 100;
}
.skip-link:focus {
  transform: translateY(0);
  color: var(--paper);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; tab-size: 4; scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--fg);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: var(--accent-deep); }
button { font: inherit; cursor: pointer; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
::selection { background: var(--accent); color: #fff; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
  margin: 0 0 var(--s-4);
  color: var(--fg);
}
h1 { font-size: var(--fs-5xl); letter-spacing: -0.035em; font-weight: 600; }
h2 { font-size: var(--fs-3xl); letter-spacing: -0.025em; }
h3 { font-size: var(--fs-xl); letter-spacing: -0.015em; }
h4 { font-size: var(--fs-lg); }
p  { margin: 0 0 var(--s-4); max-width: 70ch; }
.lead { font-size: var(--fs-lg); color: var(--ink-500); line-height: var(--lh-snug); max-width: 56ch; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: var(--s-4);
}
.eyebrow::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--ink-300);
}
.mono { font-family: var(--font-mono); }

/* ---------- Layout ---------- */
.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}
.container-narrow {
  width: min(100% - 2.5rem, var(--container-narrow));
  margin-inline: auto;
}
section { padding-block: clamp(4rem, 8vw, 7rem); }
.section-tight { padding-block: clamp(3rem, 5vw, 4.5rem); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,250,247,0.85);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--border); }
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}
.brand {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-weight: 700; font-size: 1.05rem; letter-spacing: -0.02em;
  color: var(--fg);
}
.brand__mark {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: block;
  object-fit: contain;
  flex-shrink: 0;
}
.brand:hover { color: var(--fg); }

.nav__links {
  display: flex; align-items: center; gap: var(--s-6);
  list-style: none; margin: 0; padding: 0;
}
.nav__links a {
  font-size: 0.95rem; color: var(--ink-500); font-weight: 500;
  position: relative; padding-block: 0.25rem;
}
.nav__links a:hover, .nav__links a[aria-current="page"] {
  color: var(--fg);
}
.nav__links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px;
  height: 2px; background: var(--accent); border-radius: 2px;
}
.nav__cta { display: inline-flex; }
.nav__toggle {
  display: none;
  background: transparent; border: 0; padding: var(--s-2);
  border-radius: var(--r-md);
}
.nav__toggle:hover { background: var(--ink-100); }

@media (max-width: 880px) {
  :root { --nav-h: 96px; }
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: var(--s-4);
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    transform: translateY(calc(-100% - var(--nav-h)));
    transition: transform var(--dur) var(--ease);
  }
  .nav__links.is-open { transform: translateY(0); }
  .nav__links li { border-bottom: 1px solid var(--border); }
  .nav__links li:last-child { border-bottom: 0; }
  .nav__links a { display: block; padding: var(--s-4) 0; font-size: 1.05rem; }
  .nav .nav__cta { display: none; }
  .nav__toggle { display: inline-flex; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 0.75rem 1.25rem;
  border-radius: var(--r-pill);
  font-weight: 500; font-size: 0.95rem;
  border: 1px solid transparent;
  transition: all var(--dur) var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.btn--primary {
  background: var(--ink-900);
  color: var(--paper);
}
.btn--primary:hover {
  background: var(--ink-700);
  color: var(--paper);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--accent {
  background: var(--accent);
  color: var(--ink-900);
  font-weight: 600;
}
.btn--accent:hover {
  background: var(--accent-deep);
  color: var(--paper);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255,91,42,.25);
}
.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn--ghost:hover {
  background: var(--ink-900);
  color: var(--paper);
  border-color: var(--ink-900);
}
.btn--sm { padding: 0.5rem 0.9rem; font-size: 0.875rem; }
.btn__arrow {
  display: inline-block; transition: transform var(--dur) var(--ease);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(4rem, 10vw, 9rem) clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; top: -20%; right: -10%;
  width: 50vw; height: 50vw; max-width: 700px; max-height: 700px;
  background: radial-gradient(circle at center, rgba(255,91,42,.18), transparent 60%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
.hero__content { position: relative; z-index: 1; max-width: 920px; }
.hero h1 {
  font-size: var(--fs-5xl);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.02;
  margin-bottom: var(--s-5);
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .strike {
  display: inline-block;
  position: relative;
  color: var(--ink-300);
}
.hero h1 .strike::after {
  content: ""; position: absolute; left: -2%; right: -2%; top: 52%;
  height: 6px; background: var(--accent); transform: rotate(-1.5deg);
  border-radius: 4px;
}
.hero__lede {
  font-size: var(--fs-lg);
  color: var(--ink-500);
  max-width: 56ch;
  margin-bottom: var(--s-7);
  line-height: 1.45;
}
.hero__cta {
  display: flex; gap: var(--s-3); flex-wrap: wrap;
}
.hero__meta {
  margin-top: var(--s-7);
  display: flex; gap: var(--s-6); flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}
.hero__meta span { display: inline-flex; align-items: center; gap: var(--s-2); }
.hero__meta .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal); box-shadow: 0 0 0 4px rgba(124,255,178,.2);
}

/* ---------- Service grid ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.service-card {
  background: var(--bg-elev);
  padding: var(--s-6);
  display: flex; flex-direction: column; gap: var(--s-3);
  position: relative;
  transition: background var(--dur) var(--ease);
  text-decoration: none;
  color: inherit;
  min-height: 240px;
}
.service-card:hover {
  background: var(--ink-900);
  color: var(--fg-inverse);
}
.service-card:hover .service-card__num,
.service-card:hover .service-card__desc { color: var(--ink-300); }
.service-card:hover .service-card__title { color: var(--fg-inverse); }
.service-card:hover .service-card__arrow {
  transform: translate(4px, -4px);
  color: var(--accent);
}
.service-card__num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  transition: color var(--dur) var(--ease);
}
.service-card__title {
  font-size: var(--fs-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
}
.service-card__desc {
  font-size: 0.95rem;
  color: var(--ink-500);
  line-height: 1.5;
  margin-top: auto;
  transition: color var(--dur) var(--ease);
}
.service-card__arrow {
  position: absolute; top: var(--s-5); right: var(--s-5);
  font-size: 1.25rem;
  color: var(--ink-300);
  transition: all var(--dur) var(--ease);
}

/* ---------- Stat / proof band ---------- */
.proof {
  background: var(--ink-900);
  color: var(--fg-inverse);
}
.proof__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--s-7);
  align-items: end;
}
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--paper);
  display: block;
}
.stat__num .accent { color: var(--accent); }
.stat__label {
  display: block;
  margin-top: var(--s-3);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-300);
  letter-spacing: 0.04em;
}

/* ---------- Process strip ---------- */
.process {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--s-6);
  margin-top: var(--s-7);
  counter-reset: step;
}
.process__step {
  position: relative;
  padding-top: var(--s-5);
  border-top: 1px solid var(--border);
  counter-increment: step;
}
.process__step::before {
  content: "0" counter(step);
  position: absolute; top: -0.6rem; left: 0;
  background: var(--bg);
  padding-right: var(--s-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  font-weight: 500;
}
.process__step h4 { margin: 0 0 var(--s-2); font-size: 1.05rem; }
.process__step p  { color: var(--ink-500); font-size: 0.95rem; margin: 0; }

/* ---------- Section heads ---------- */
.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-7);
  align-items: end;
  margin-bottom: var(--s-7);
}
.section-head h2 { margin: 0; max-width: 18ch; }
.section-head p  { margin: 0; color: var(--ink-500); }
@media (max-width: 720px) {
  .section-head { grid-template-columns: 1fr; gap: var(--s-4); }
}

/* ---------- Two-col content ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 880px) {
  .two-col { grid-template-columns: 1fr; gap: var(--s-6); }
}

/* ---------- Bullet list ---------- */
.tick-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: var(--s-3);
}
.tick-list li {
  position: relative;
  padding-left: 1.75rem;
  color: var(--ink-500);
  line-height: 1.5;
}
.tick-list li::before {
  content: ""; position: absolute; left: 0; top: 0.5rem;
  width: 14px; height: 14px;
  border: 2px solid var(--accent);
  border-top: 0; border-right: 0;
  transform: rotate(-45deg);
  border-radius: 1px;
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0; border-top: 1px solid var(--border); }
.faq details {
  border-bottom: 1px solid var(--border);
  padding: var(--s-5) 0;
}
.faq summary {
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--s-4);
  font-size: var(--fs-lg);
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 400;
  transition: transform var(--dur) var(--ease);
  flex-shrink: 0;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > p {
  margin: var(--s-4) 0 0;
  color: var(--ink-500);
  max-width: 65ch;
}

/* ---------- CTA section ---------- */
.cta-section {
  background: var(--ink-900);
  color: var(--fg-inverse);
  border-radius: var(--r-xl);
  padding: clamp(3rem, 6vw, 5rem);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute; bottom: -20%; left: 60%;
  width: 60%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(255,91,42,.25), transparent 60%);
  filter: blur(50px);
  pointer-events: none;
}
.cta-section > * { position: relative; }
.cta-section h2 {
  color: var(--paper);
  font-size: var(--fs-4xl);
  max-width: 18ch;
  margin-bottom: var(--s-4);
}
.cta-section p {
  color: var(--ink-300);
  font-size: var(--fs-lg);
  max-width: 50ch;
  margin-bottom: var(--s-6);
}
.cta-section .btn--ghost {
  background: transparent; color: var(--paper);
  border-color: rgba(255,255,255,.2);
}
.cta-section .btn--ghost:hover {
  background: var(--paper); color: var(--ink-900); border-color: var(--paper);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding-block: var(--s-8) var(--s-6);
  margin-top: var(--s-9);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--s-7);
  margin-bottom: var(--s-7);
}
@media (max-width: 720px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__brand-block { grid-column: 1 / -1; }
}
.footer__brand-block p {
  color: var(--ink-500);
  margin: var(--s-3) 0 0;
  font-size: 0.95rem;
  max-width: 28ch;
}
.footer__col h5 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 var(--s-4);
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s-3); }
.footer__col a { color: var(--ink-500); font-size: 0.95rem; }
.footer__col a:hover { color: var(--fg); }
.footer__bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--s-3);
  padding-top: var(--s-5);
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

/* ---------- Page header (non-home pages) ---------- */
.page-header {
  padding-block: clamp(4rem, 8vw, 7rem) var(--s-7);
  border-bottom: 1px solid var(--border);
}
.page-header h1 {
  font-size: var(--fs-4xl);
  max-width: 18ch;
  margin-bottom: var(--s-4);
}
.page-header .lead { font-size: var(--fs-lg); color: var(--ink-500); }

/* ---------- Service detail ---------- */
.deliverables {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-1);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.deliverables > div {
  background: var(--bg-elev);
  padding: var(--s-5);
}
.deliverables h4 {
  margin: 0 0 var(--s-2);
  font-size: 1rem;
}
.deliverables p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-500);
}

/* ---------- Portfolio / case study grid ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-5);
}
@media (max-width: 1040px) {
  .work-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .work-grid { grid-template-columns: 1fr; gap: var(--s-4); }
}

.work-card {
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.work-card:hover {
  transform: translateY(-2px);
  border-color: var(--ink-300);
  box-shadow: var(--shadow-md);
  color: inherit;
}
.work-card__media {
  aspect-ratio: 3 / 2;
  background: var(--ink-50);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.work-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}
.work-card:hover .work-card__media img { transform: scale(1.03); }
.work-card__body {
  padding: var(--s-5);
  display: flex; flex-direction: column; gap: var(--s-2);
  flex: 1;
}
.work-card__sector {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.work-card__title {
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1.2;
}
.work-card__desc {
  font-size: 0.95rem;
  color: var(--ink-500);
  line-height: 1.5;
  margin: 0;
}
.work-card__more {
  margin-top: auto;
  padding-top: var(--s-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--accent);
}
.work-card__more::after {
  content: " →";
  transition: margin var(--dur) var(--ease);
}
.work-card:hover .work-card__more::after { margin-left: 4px; }

/* ---------- Case study detail ---------- */
.case-hero {
  margin-block: var(--s-6) var(--s-7);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--ink-50);
}
.case-hero img {
  width: 100%; height: auto; display: block;
  max-height: 560px; object-fit: cover;
}
.case-meta {
  display: flex; flex-wrap: wrap; gap: var(--s-5);
  padding-block: var(--s-5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-block: var(--s-6);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
}
.case-meta span strong {
  color: var(--fg);
  font-weight: 500;
  margin-right: var(--s-2);
}

/* ---------- Blog index / post list ---------- */
.posts {
  display: grid;
  gap: var(--s-1);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.post-card {
  background: var(--bg-elev);
  padding: var(--s-6);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-3) var(--s-6);
  align-items: start;
  text-decoration: none;
  color: inherit;
  transition: background var(--dur) var(--ease);
}
.post-card:hover { background: var(--ink-900); color: var(--fg-inverse); }
.post-card:hover .post-card__excerpt,
.post-card:hover .post-card__meta { color: var(--ink-300); }
.post-card:hover .post-card__title { color: var(--fg-inverse); }
.post-card:hover .post-card__more { color: var(--accent); }
.post-card__meta {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  display: flex; gap: var(--s-3); align-items: center;
  transition: color var(--dur) var(--ease);
}
.post-card__meta .dot-sep {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--ink-300); display: inline-block;
}
.post-card__title {
  font-size: var(--fs-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.2;
}
.post-card__excerpt {
  grid-column: 1 / -1;
  font-size: 0.98rem;
  color: var(--ink-500);
  line-height: 1.55;
  margin: 0;
  max-width: 70ch;
  transition: color var(--dur) var(--ease);
}
.post-card__more {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  white-space: nowrap;
  align-self: end;
}

/* ---------- Article body (blog posts) ---------- */
.article {
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--ink-700);
}
.article > * + * { margin-top: var(--s-4); }
.article h2 {
  font-size: var(--fs-2xl);
  margin-top: var(--s-7);
  margin-bottom: var(--s-3);
  letter-spacing: -0.02em;
}
.article h3 {
  font-size: var(--fs-lg);
  margin-top: var(--s-6);
  margin-bottom: var(--s-2);
}
.article p { max-width: 68ch; }
.article ul, .article ol {
  padding-left: 1.5rem;
  max-width: 68ch;
  color: var(--ink-700);
}
.article li + li { margin-top: var(--s-2); }
.article a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.article a:hover { color: var(--accent); }
.article blockquote {
  margin: var(--s-6) 0;
  padding: var(--s-4) var(--s-5);
  border-left: 3px solid var(--accent);
  background: var(--bg-elev);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: var(--fs-lg);
  color: var(--ink-700);
  font-style: normal;
}
.article blockquote p { margin: 0; max-width: none; }
.article code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--ink-50);
  padding: 0.15em 0.4em;
  border-radius: var(--r-sm);
}
.article hr {
  border: 0;
  height: 1px;
  background: var(--border);
  margin-block: var(--s-7);
}

.post-header {
  padding-block: clamp(3rem, 6vw, 5rem) var(--s-5);
  border-bottom: 1px solid var(--border);
}
.post-header__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: var(--s-4);
  display: flex; gap: var(--s-3); align-items: center;
}
.post-header h1 {
  font-size: var(--fs-3xl);
  max-width: 22ch;
  margin-bottom: var(--s-4);
}
.post-header__byline {
  font-size: 0.9rem;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

/* ---------- Form ---------- */
.form { display: grid; gap: var(--s-4); max-width: 560px; }
.form__row { display: grid; gap: var(--s-2); }
.form label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-500);
}
.form input,
.form textarea,
.form select {
  font: inherit;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  background: var(--bg-elev);
  color: var(--fg);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.form input:focus,
.form textarea:focus,
.form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,91,42,.15);
}
.form textarea { min-height: 140px; resize: vertical; }
.form .row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-4); }
@media (max-width: 560px) { .form .row-2 { grid-template-columns: 1fr; } }

/* ---------- Utilities ---------- */
.center { text-align: center; }
.muted  { color: var(--fg-muted); }
.divider {
  height: 1px; background: var(--border);
  margin-block: var(--s-7);
}

/* Ambient particle background (canvas injected by main.js) */
.bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}