/* ============================================================================
   main.css: minimalist monochrome design system (no color, ever)
   Light base · large editorial type · generous whitespace · hairline rules.
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap');

:root {
  --paper: #ffffff;
  --paper-2: #f4f3f0;
  --surface: #ecebe7;
  --ink: #0b0b0b;
  --ink-2: #111111;        /* inverted section bg */
  --text: #141414;
  --muted: #6b6b6b;
  --faint: #9a9a9a;
  --hair: #e7e6e3;
  --hair-strong: #d4d3cf;
  --on-ink: #f4f3f0;       /* text on inverted */
  --on-ink-muted: rgba(244, 243, 240, 0.6);
  --on-ink-hair: rgba(244, 243, 240, 0.16);

  --font: 'Geist', 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', monospace;

  --container: 1200px;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
  --section-y: clamp(4.5rem, 11vh, 9rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 14px;
}

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scrollbar-width: thin; }
body {
  background: var(--paper);
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--ink); color: var(--paper); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---- layout primitives ---- */
.container { width: min(100% - var(--pad) * 2, var(--container)); margin-inline: auto; }
.section { padding-block: var(--section-y); border-top: 1px solid var(--hair); }
.section--alt { background: var(--paper-2); }
.section--ink { background: var(--ink-2); color: var(--on-ink); border-top: none; }
.section-head { max-width: 52ch; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted); display: inline-flex; gap: 0.7em; align-items: baseline;
}
.eyebrow .idx { color: var(--faint); }
.section--ink .eyebrow { color: var(--on-ink-muted); }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.025em; line-height: 1.05; }
.h-display { font-size: clamp(2.4rem, 1.2rem + 5vw, 5.25rem); line-height: 1.0; letter-spacing: -0.035em; }
.h-section { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3.3rem); margin-top: 0.6rem; }
.lead { font-size: clamp(1.1rem, 1rem + 0.6vw, 1.45rem); line-height: 1.5; color: var(--muted); }
.section--ink .lead { color: var(--on-ink-muted); }
.muted { color: var(--muted); }
.emph { position: relative; white-space: nowrap; }
.emph::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0.08em; height: 2px; background: currentColor; opacity: 0.85; }

/* ---- buttons (fill-and-invert sweep on hover; magnetic via JS) ---- */
.btn {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-flex; align-items: center; gap: 0.6em;
  padding: 0.95em 1.5em; border-radius: 100px; font-weight: 500; font-size: 0.98rem;
  border: 1px solid transparent;
  transition: color .4s var(--ease), border-color .35s var(--ease);
  will-change: transform;
}
.btn > span { position: relative; z-index: 1; }
.btn::before { content: ''; position: absolute; inset: 0; z-index: 0; transform: translateY(102%); transition: transform .5s var(--ease); }
.btn:hover::before { transform: translateY(0); }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary::before { background: var(--paper); }
.btn-primary:hover { color: var(--ink); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--hair-strong); }
.btn-secondary::before { background: var(--ink); }
.btn-secondary:hover { color: var(--paper); border-color: var(--ink); }

/* inverted sections flip the sweep colors */
.section--ink .btn-primary { background: var(--paper); color: var(--ink); }
.section--ink .btn-primary::before { background: var(--ink); }
.section--ink .btn-primary:hover { color: var(--paper); }
.section--ink .btn-secondary { color: var(--on-ink); border-color: var(--on-ink-hair); }
.section--ink .btn-secondary::before { background: var(--on-ink); }
.section--ink .btn-secondary:hover { color: var(--ink); border-color: var(--on-ink); }

/* attention pulse on the primary CTA ("Book a call") to draw the eye */
.btn-attn { animation: btnPulse 2.6s ease-out infinite; }
.btn-attn:hover { animation: none; }
.btn-attn .arrow { animation: arrowNudge 2.6s ease-in-out infinite; }
.btn-attn:hover .arrow { animation: none; }
@keyframes btnPulse {
  0% { box-shadow: 0 0 0 0 rgba(11, 11, 11, 0.32); }
  70%, 100% { box-shadow: 0 0 0 12px rgba(11, 11, 11, 0); }
}
@keyframes arrowNudge {
  0%, 55%, 100% { transform: translateX(0); }
  72% { transform: translateX(5px); }
}
@media (prefers-reduced-motion: reduce) { .btn-attn, .btn-attn .arrow { animation: none !important; } }

/* animated underline link */
.ulink { position: relative; display: inline-flex; align-items: center; gap: 0.4em; padding-bottom: 2px; }
.ulink::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease); }
.ulink:hover::after { transform: scaleX(1); transform-origin: left; }

/* ============================================================================
   NAV
   ========================================================================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--hair);
  transition: transform .45s var(--ease);
}
.nav--hidden { transform: translateY(-100%); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 0.55em; font-weight: 600; letter-spacing: -0.02em; }
.logo-mark { width: 1.6em; height: 1.6em; display: inline-grid; place-items: center; }
.logo-mark svg { width: 100%; height: 100%; display: block; }
.nav-links { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.2rem); }
.nav-links a:not(.btn) { font-size: 0.92rem; color: var(--muted); transition: color .25s; }
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links .btn { padding: 0.6em 1.1em; font-size: 0.88rem; }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.4rem; }

/* ============================================================================
   HERO
   ========================================================================== */
.hero { padding-top: clamp(8rem, 18vh, 12rem); padding-bottom: var(--section-y); }
.hero-grid { display: grid; grid-template-columns: 1.6fr 0.9fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.avail { display: inline-flex; align-items: center; gap: 0.6em; font-size: 0.85rem; color: var(--muted); margin-bottom: 1.6rem; }
.avail .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink); position: relative; }
.avail .dot::after { content: ''; position: absolute; inset: -4px; border-radius: 50%; border: 1px solid var(--ink); opacity: 0.4; animation: pulse 2.4s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(0.6); opacity: 0.5; } 100% { transform: scale(1.6); opacity: 0; } }
.hero h1 { margin-bottom: 1.6rem; }
.hero .lead { max-width: 46ch; margin-bottom: 2.2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: center; }
.hero-portrait { position: relative; aspect-ratio: 4/5; border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.hero-portrait img { width: 100%; height: 112%; object-fit: cover; object-position: center; filter: contrast(1.02) saturate(1.03); will-change: transform; }

/* scroll progress bar */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 200; background: var(--ink); transform: scaleX(0); transform-origin: left; will-change: transform; }
.hero-meta { margin-top: 1rem; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em; color: var(--faint); text-transform: uppercase; }

/* ---- proof strip ---- */
.proof { border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); }
.proof-inner { display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; padding-block: 1.4rem; }
.proof-item { display: inline-flex; align-items: center; gap: 0.6em; font-size: 0.9rem; color: var(--muted); }
.proof-item::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--ink); }

/* ============================================================================
   SERVICES
   ========================================================================== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.4rem); }
.card {
  border: 1px solid var(--hair); border-radius: var(--radius); padding: clamp(1.5rem, 2.5vw, 2.2rem);
  background: var(--paper); transition: border-color .4s var(--ease), transform .4s var(--ease);
  display: flex; flex-direction: column; min-height: 100%;
}
.section--alt .card { background: var(--paper); border-color: var(--hair-strong); }
.card:hover { border-color: var(--ink); transform: translateY(-3px); }
.card .idx { font-family: var(--mono); font-size: 0.78rem; color: var(--faint); }
.card h3 { font-size: 1.4rem; margin: 0.9rem 0 0.7rem; }
.card p { color: var(--muted); }
.card .ticks { list-style: none; margin-top: 1.3rem; padding-top: 1.3rem; border-top: 1px solid var(--hair); display: grid; gap: 0.55rem; }
.card .ticks li { font-size: 0.9rem; padding-left: 1.4em; position: relative; }
.card .ticks li::before { content: '+'; position: absolute; left: 0; color: var(--faint); }

/* ============================================================================
   WORK (inverted band)
   ========================================================================== */
.work-item { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: center; padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.work-item + .work-item { border-top: 1px solid var(--on-ink-hair); }
.work-item:nth-child(even) .work-shot { order: -1; }
.work-kicker { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--on-ink-muted); }
.work-item h3 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin: 0.7rem 0 1.2rem; }
.work-item .row { color: var(--on-ink-muted); margin-bottom: 0.8rem; line-height: 1.55; }
.work-item .row strong { color: var(--on-ink); font-weight: 600; }
.work-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.4rem 0; }
.work-tags span { font-family: var(--mono); font-size: 0.72rem; padding: 0.35em 0.8em; border: 1px solid var(--on-ink-hair); border-radius: 100px; color: var(--on-ink-muted); }
.work-ctas { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.work-shot { border: 1px solid var(--on-ink-hair); border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; background: #000; }
.work-shot img { width: 100%; height: 112%; object-fit: cover; object-position: center; filter: grayscale(1) contrast(1.05) brightness(0.95); transition: filter .55s var(--ease); will-change: transform; }
.work-shot:hover img { filter: grayscale(0) contrast(1) brightness(1); }
.work-outro { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding-top: clamp(2rem, 4vw, 3rem); border-top: 1px solid var(--on-ink-hair); color: var(--on-ink-muted); }

/* ============================================================================
   WHY (value): two-column list
   ========================================================================== */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1.5rem, 3vw, 3rem) clamp(2rem, 5vw, 5rem); }
.why-item { border-top: 1px solid var(--hair); padding-top: 1.4rem; }
.why-item h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }
.why-item p { color: var(--muted); }

/* ============================================================================
   PROCESS
   ========================================================================== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1rem, 2vw, 2rem); }
.step { border-top: 2px solid var(--ink); padding-top: 1.2rem; }
.step .n { font-family: var(--mono); font-size: 0.8rem; color: var(--faint); }
.step h4 { font-size: 1.2rem; margin: 0.6rem 0 0.4rem; font-weight: 600; }
.step p { font-size: 0.95rem; color: var(--muted); }

/* ============================================================================
   ENGAGEMENT
   ========================================================================== */
.engage { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.4rem); }
.engage .card h3 { font-size: 1.3rem; }
.engage .best { margin-top: auto; padding-top: 1.2rem; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); }
.engage-cta { margin-top: clamp(2rem, 4vw, 3rem); text-align: center; color: var(--muted); }

/* ============================================================================
   FAQ
   ========================================================================== */
.faq { max-width: 780px; }
.faq-item { border-top: 1px solid var(--hair); }
.faq-item:last-child { border-bottom: 1px solid var(--hair); }
.faq-q { width: 100%; background: none; border: 0; text-align: left; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.3rem 0; font-size: clamp(1.05rem, 1.6vw, 1.25rem); font-weight: 500; color: var(--ink); }
.faq-icon { flex: none; width: 1.1rem; height: 1.1rem; position: relative; }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: var(--ink); transition: transform .4s var(--ease); }
.faq-icon::before { top: 50%; left: 0; width: 100%; height: 1.5px; transform: translateY(-50%); }
.faq-icon::after { left: 50%; top: 0; width: 1.5px; height: 100%; transform: translateX(-50%); }
.faq-item.open .faq-icon::after { transform: translateX(-50%) scaleY(0); }
.faq-a { overflow: hidden; height: 0; }
.faq-a p { padding-bottom: 1.3rem; color: var(--muted); max-width: 62ch; }

/* ============================================================================
   FINAL CTA + FOOTER
   ========================================================================== */
.cta-final { text-align: center; }
.cta-final .h-display { margin: 0.6rem auto 1.2rem; max-width: 18ch; }
.cta-final .lead { max-width: 40ch; margin: 0 auto 2.4rem; }
.cta-mail { font-family: var(--mono); font-size: 0.85rem; color: var(--on-ink-muted); margin-top: 1.6rem; }

.footer { background: var(--ink-2); color: var(--on-ink); padding-block: clamp(2.5rem, 5vw, 4rem); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.4rem; font-size: 0.9rem; color: var(--on-ink-muted); }
.footer-links a:hover { color: var(--on-ink); }
.footer .small { font-family: var(--mono); font-size: 0.74rem; color: var(--on-ink-muted); }

/* ============================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-portrait { max-width: 320px; }
  .cards, .engage { grid-template-columns: 1fr; }
  .work-item { grid-template-columns: 1fr; }
  .work-item:nth-child(even) .work-shot { order: 0; }
  .why-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; position: fixed; inset: 64px 0 auto 0; flex-direction: column; background: var(--paper); border-bottom: 1px solid var(--hair); padding: var(--pad); gap: 1.2rem; }
  .nav-toggle { display: block; }
  .steps { grid-template-columns: 1fr; }
}

/* ---- reduced motion: show everything, no transforms ---- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.05ms !important; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}