/* ============================================================
   Back Row Studio — Design Tokens
   Theme: stage crew / production — the people working the back
   row so the front of house runs clean. Warm marquee amber
   against ink navy and denim, cool paper background (not the
   default cream), slab display type for craft, plain sans for
   read-heavy copy, mono for data/labels (nods to the founder's
   engineering background + the review-automation product).
   ============================================================ */

:root {
  --curtain-navy: #1c2b39;
  --ink: #20242a;
  --denim: #3e5c76;
  --marquee-amber: #e3a335;
  --marquee-amber-dark: #c8862091;
  --canvas: #eef1f2;
  --paper: #ffffff;
  --line: #d7dde0;
  --success-green: #3f6b4f;

  --font-display: "Zilla Slab", Georgia, serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --radius: 4px;
  --max-width: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--curtain-navy);
}
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--denim);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--marquee-amber);
  display: inline-block;
}

.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 44px 0; }
.section--tight { padding: 22px 0; }
.section--dark { background: var(--curtain-navy); color: #dfe6ea; }
.section--dark h2, .section--dark h3 { color: #fff; }
.section--line-top { border-top: 1px solid var(--line); }

/* Header / nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 72px;
  max-width: none;
  padding-left: 0;
  padding-right: 24px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--curtain-navy);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
}
.site-header .logo {
  position: static;
  margin-right: auto;
}

.logo-mark {
  width: min(248px, calc(100vw - 140px));
  height: auto;
  display: block;
}

.site-footer .logo-mark {
  width: 110px;
}

.brs-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--marquee-amber);
  color: var(--curtain-navy);
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.22), 0 0 0 2px rgba(255, 255, 255, 0.55);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s ease;
  z-index: 65;
}

.brs-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.brs-to-top:hover {
  background: #d99420;
}

.brs-to-top:focus-visible {
  outline: 2px solid var(--curtain-navy);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.65);
}

.nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] {
  border-bottom-color: var(--marquee-amber);
}
.nav-cta {
  background: var(--curtain-navy);
  color: #fff !important;
  padding: 10px 18px !important;
  border-radius: var(--radius);
  border-bottom: none !important;
}
.nav-cta:hover { background: var(--denim); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-left: auto;
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  align-items: center;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--marquee-amber);
  outline-offset: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn:focus-visible {
  outline: 2px solid var(--marquee-amber);
  outline-offset: 3px;
}
.btn-primary { background: var(--marquee-amber); color: var(--curtain-navy); }
.btn-primary:hover { background: #d99420; }
.btn-secondary {
  background: transparent;
  color: var(--curtain-navy);
  border-color: var(--curtain-navy);
}
.btn-secondary:hover { background: var(--curtain-navy); color: #fff; }
.btn-on-dark { border-color: #8fa4b3; color: #fff; }
.btn-on-dark:hover { background: #fff; color: var(--curtain-navy); }

/* Hero */
.hero {
  padding: 72px 0 52px;
  background:
    radial-gradient(ellipse 900px 480px at 85% -10%, rgba(227,163,53,0.16), transparent 60%),
    var(--canvas);
}
.hero--sub { padding-bottom: 36px; }
.hero .eyebrow { margin-bottom: 18px; }
.hero p.lead { font-size: 1.15rem; max-width: 640px; color: var(--denim); }
.hero-ctas { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* Stat / pillar strip */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.stat-strip > div {
  padding: 18px 20px;
  border-left: 1px solid var(--line);
}
.stat-strip > div:first-child { border-left: none; }
.stat-strip strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--marquee-amber-dark);
  margin-bottom: 4px;
}
.stat-strip span { font-size: 0.92rem; color: var(--ink); }

/* Card grid */
.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, 1fr);
}
.grid.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card .num {
  font-family: var(--font-mono);
  color: var(--marquee-amber-dark);
  font-size: 0.8rem;
  margin-bottom: 10px;
  display: block;
}
.card--featured {
  border-color: var(--marquee-amber);
  box-shadow: 0 0 0 1px var(--marquee-amber);
}

/* Process list */
.process {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 0;
}
.process li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.process li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  color: var(--marquee-amber-dark);
  font-size: 0.95rem;
}

/* Quote / case study */
.quote {
  border-left: 3px solid var(--marquee-amber);
  padding: 4px 0 4px 22px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--curtain-navy);
  margin: 20px 0;
}
.quote cite {
  display: block;
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--denim);
  margin-top: 10px;
}

.metric-row { display: flex; gap: 24px; flex-wrap: wrap; margin: 22px 0; }
.metric { font-family: var(--font-mono); }
.metric strong { display: block; font-size: 1.8rem; color: var(--curtain-navy); }
.metric span { font-size: 0.82rem; color: var(--denim); }

/* Forms */
.form-grid { display: grid; gap: 18px; max-width: 620px; }
.form-row { display: grid; gap: 6px; }
.form-row label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--denim);
}
.form-row input,
.form-row select,
.form-row textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  width: 100%;
}
.form-row select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%233e5c76' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: 2px solid var(--marquee-amber);
  outline-offset: 1px;
}
.form-note { font-size: 0.85rem; color: var(--denim); }
.form-status {
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.success { background: #e6efe9; color: var(--success-green); border: 1px solid #bfd8c8; }
.form-status.error { background: #f6e6e3; color: #9a3b2a; border: 1px solid #e3b7ac; }
.honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Footer */
.site-footer {
  background: var(--curtain-navy);
  color: #b9c6ce;
  padding: 16px 0 8px;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.site-footer .wrap > div p { margin-bottom: 0; }
.site-footer .wrap > div p + p { margin-top: 6px !important; }
.site-footer a { color: #dfe6ea; text-decoration: none; }
.site-footer a:hover { color: var(--marquee-amber); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; font-size: 0.86rem; }
.footer-bottom {
  border-top: 1px solid #33465a;
  margin-top: 8px;
  padding-top: 6px;
  font-size: 0.78rem;
  color: #8ea0ac;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Responsive */
@media (max-width: 860px) {
  .wrap { padding: 0 18px; }
  .section { padding: 36px 0; }
  .section--tight { padding: 18px 0; }
  .hero { padding: 60px 0 42px; }

  .grid, .grid.grid-2, .stat-strip { grid-template-columns: 1fr; }
  .stat-strip > div { border-left: none; border-top: 1px solid var(--line); }
  .stat-strip > div:first-child { border-top: none; }

  .site-header .wrap {
    height: 72px;
    padding-left: 0;
    padding-right: 16px;
  }

  .nav { position: fixed; inset: 72px 0 auto 0; background: var(--paper); flex-direction: column; align-items: flex-start; padding: 14px 18px; border-bottom: 1px solid var(--line); display: none; gap: 12px; }
  .nav.is-open { display: flex; }
  .nav-toggle { display: inline-block; }

  .card { padding: 20px; }
  .metric-row { gap: 18px; margin: 18px 0; }
  .site-footer { padding: 14px 0 8px; }

  .logo-mark {
    width: min(52vw, 170px);
    max-width: none;
  }

  .site-footer .logo-mark {
    width: 96px;
  }

  .brs-to-top {
    right: 0.85rem;
    bottom: 0.85rem;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 560px) {
  .wrap { padding: 0 14px; }
  .section { padding: 30px 0; }
  .section--tight { padding: 16px 0; }
  .hero { padding: 52px 0 36px; }

  .site-header .wrap {
    height: 68px;
    padding-right: 12px;
  }

  .logo-mark {
    width: min(58vw, 145px);
  }

  .nav {
    inset: 68px 0 auto 0;
    padding: 12px 14px;
  }

  .hero-ctas { gap: 10px; margin-top: 18px; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .card { padding: 18px; }
  .metric-row { gap: 14px; margin: 16px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}