/* ============================================================
   Design skin: SIGNAL
   Archivo 900 + Space Mono · hard 2px rules · signal orange ·
   uppercase display · zero radius
   Active when <html data-design="signal">.
   ============================================================ */

/* ---------- Tokens ---------- */

:root[data-design="signal"] {
  color-scheme: dark;

  --bg: #0a0a0a;
  --bg-header: rgba(10, 10, 10, 0.88);
  --card: transparent;
  --text: #f5f5f2;
  --muted: #b3b3ad;
  --faint: #7a7a74;
  --line: #f5f5f2;
  --line-soft: #f5f5f2;

  --accent: #ff4d00;
  --accent-text: #ff4d00;
  --accent-solid: #ff4d00;
  --accent-contrast: #0a0a0a;
  --meter-rest-text: #f5f5f2;

  --font-sans: 'Archivo', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'Cascadia Code', Menlo, monospace;
}

:root[data-design="signal"][data-theme="light"],
:root[data-design="signal"]:not([data-theme]):has(#lightswitch:checked) {
  color-scheme: light;

  --bg: #f5f5f2;
  --bg-header: rgba(245, 245, 242, 0.9);
  --card: transparent;
  --text: #0a0a0a;
  --muted: #4a4a45;
  --faint: #85857e;
  --line: #0a0a0a;
  --line-soft: #0a0a0a;

  --accent: #e64500;
  --accent-text: #d84100;
  --accent-solid: #ff4d00;
  --accent-contrast: #0a0a0a;
  --meter-rest-text: #0a0a0a;
}

/* ---------- Header ---------- */

[data-design="signal"] .site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-header);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--line);
}
[data-design="signal"] .site-header.scrolled {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

[data-design="signal"] .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

/* two-square lockup: bordered mark box (like the theme toggle)
   + filled wordmark block (like the CTA button) */
[data-design="signal"] .logo {
  font-weight: 900;
  font-size: 17px;
  letter-spacing: -0.01em;
  /* same gap as between the CTA and the theme toggle */
  gap: 14px;
  color: var(--text);
  white-space: nowrap;
}
[data-design="signal"] .logo:hover { opacity: 1; }
[data-design="signal"] .logo-mark { color: var(--accent-text); }

[data-design="signal"] .logo-text {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 14px;
  background: var(--text);
  color: var(--bg);
}

[data-design="signal"] .site-nav {
  display: flex;
  gap: 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
}
[data-design="signal"] .site-nav a { color: var(--text); }
[data-design="signal"] .site-nav a:hover { color: var(--accent-text); opacity: 1; }
[data-design="signal"] .site-nav a.active { color: var(--accent-text); }

[data-design="signal"] .header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

[data-design="signal"] .nav-cta {
  background: var(--accent-solid);
  color: var(--accent-contrast);
  padding: 10px 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
  transition: filter 0.15s ease;
}
[data-design="signal"] .nav-cta:hover { filter: brightness(0.9); opacity: 1; }

[data-design="signal"] .theme-toggle { border-width: 2px; border-color: var(--line); color: var(--text); }
[data-design="signal"] .logo-box { border-width: 2px; }

/* ---------- Hero ---------- */

[data-design="signal"] .hero {
  border-bottom: 2px solid var(--line);
}

[data-design="signal"] .hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding-top: 90px;
  padding-bottom: 70px;
}

[data-design="signal"] .status-chip {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-text);
  margin-bottom: 28px;
}
[data-design="signal"] .status-dot { display: none; }

[data-design="signal"] h1 {
  font-size: clamp(2.9rem, 8.4vw, 7.75rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  max-width: 1200px;
}

[data-design="signal"] h1 .accent { color: var(--accent-text); }

[data-design="signal"] .lede {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 640px;
  margin-top: 40px;
}

[data-design="signal"] .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 36px;
}

[data-design="signal"] .btn {
  display: inline-block;
  padding: 19px 40px;
  font-size: 17px;
  font-weight: 800;
  text-transform: uppercase;
  transition: filter 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
[data-design="signal"] .btn:hover { opacity: 1; }

[data-design="signal"] .btn-primary {
  background: var(--accent-solid);
  color: var(--accent-contrast);
}
[data-design="signal"] .btn-primary:hover { filter: brightness(0.9); }
[data-design="signal"] .btn-ghost {
  border: 2px solid var(--line);
  color: var(--text);
}
[data-design="signal"] .btn-ghost:hover {
  background: var(--line);
  color: var(--bg);
}
[data-design="signal"] .btn-lg { padding: 20px 44px; }

/* Signal is type-first: no terminal window in the hero */
[data-design="signal"] .terminal { display: none; }

/* ---------- Clients marquee row ---------- */

[data-design="signal"] .clients {
  border-bottom: 2px solid var(--line);
}

[data-design="signal"] .clients-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 44px;
  padding-top: 24px;
  padding-bottom: 24px;
}

[data-design="signal"] .clients-label { display: none; }

[data-design="signal"] .clients-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 44px;
}

[data-design="signal"] .clients-list li {
  font-weight: 800;
  font-size: 24px;
  letter-spacing: 0.01em;
  color: var(--text);
}

[data-design="signal"] .clients-list li + li::before {
  content: "\2726";  /* four-pointed star separator */
  color: var(--accent-text);
  margin-right: 44px;
  font-size: 18px;
  font-weight: 400;
}

[data-design="signal"] .clients-list li.clients-you { color: var(--faint); }

/* ---------- Stats ---------- */

[data-design="signal"] .stats-section {
  border-bottom: 2px solid var(--line);
}
[data-design="signal"] .stats-section .container {
  max-width: none;
  padding: 0;
}

[data-design="signal"] .stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

[data-design="signal"] .stat {
  padding: 44px 40px;
  border-right: 2px solid var(--line);
}
[data-design="signal"] .stat:last-child {
  border-right: none;
  background: var(--accent-solid);
  color: var(--accent-contrast);
}

[data-design="signal"] .stat dd {
  font-size: clamp(2.5rem, 4.4vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
}
[data-design="signal"] .stat dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}
[data-design="signal"] .stat:last-child dt { color: var(--accent-contrast); }

/* ---------- Sections ---------- */

[data-design="signal"] .section { padding: 84px 0 64px; }
[data-design="signal"] .section-slim { padding: 0 0 64px; }

[data-design="signal"] .section-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-text);
  text-transform: uppercase;
}
[data-design="signal"] .section-label::before { content: "/// "; }

[data-design="signal"] h2 {
  font-size: clamp(2rem, 3.9vw, 3.5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-top: 14px;
}

[data-design="signal"] .h2-accent { color: var(--accent-text); }

[data-design="signal"] .section-lede {
  font-size: 16px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 22px;
  max-width: 680px;
}

/* ---------- Services (numbered bordered cells) ---------- */

[data-design="signal"] .card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 44px;
  border: 2px solid var(--line);
  counter-reset: service;
}

[data-design="signal"] .card {
  padding: 34px 36px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  counter-increment: service;
  transition: background-color 0.15s ease;
}
[data-design="signal"] .card:nth-child(2n) { border-right: none; }
[data-design="signal"] .card:nth-last-child(-n+2) { border-bottom: none; }
[data-design="signal"] .card:hover { background: color-mix(in srgb, var(--accent-solid) 7%, transparent); }

[data-design="signal"] .card-icon { display: none; }

[data-design="signal"] .card::before {
  content: "0" counter(service);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-text);
}

[data-design="signal"] .card h3 {
  font-size: 24px;
  font-weight: 800;
  text-transform: uppercase;
  margin-top: 8px;
  letter-spacing: -0.01em;
}

[data-design="signal"] .card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 10px;
}

[data-design="signal"] .card .card-tags {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--faint);
  margin-top: 14px;
}

/* ---------- Stack ---------- */

[data-design="signal"] .stack-band {
  border: 2px solid var(--line);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
}

[data-design="signal"] .stack-col {
  padding: 36px 36px;
  border-right: 2px solid var(--line);
}
[data-design="signal"] .stack-col:last-child { border-right: none; }

[data-design="signal"] .stack-label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--accent-text);
}
[data-design="signal"] .stack-main {
  font-size: 24px;
  font-weight: 800;
  text-transform: uppercase;
  margin-top: 8px;
}
[data-design="signal"] .stack-note {
  font-size: 14px;
  color: var(--muted);
  margin-top: 6px;
}

/* ---------- Approach ---------- */

[data-design="signal"] #approach {
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  padding: 0;
}

[data-design="signal"] .approach-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
}

[data-design="signal"] .approach-copy {
  padding: 84px 56px 84px 0;
  border-right: 2px solid var(--line);
}

[data-design="signal"] .approach-copy h2 { max-width: 540px; line-height: 1.0; }

[data-design="signal"] .split-meter { margin-top: 36px; }

[data-design="signal"] .split-track {
  display: flex;
  height: 56px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}
[data-design="signal"] .split-code {
  width: 80%;
  background: var(--accent-solid);
  color: var(--accent-contrast);
  display: flex;
  align-items: center;
  padding-left: 16px;
  white-space: nowrap;
  overflow: hidden;
}
[data-design="signal"] .split-mgmt {
  width: 20%;
  border: 2px solid var(--line);
  color: var(--meter-rest-text);
  display: flex;
  align-items: center;
  padding-left: 12px;
}

[data-design="signal"] .split-legend {
  font-size: 13px;
  color: var(--faint);
  margin-top: 12px;
  line-height: 1.55;
}

[data-design="signal"] .principles {
  display: flex;
  flex-direction: column;
  gap: 30px;
  justify-content: center;
  padding: 84px 0 84px 56px;
}

[data-design="signal"] .principles li { padding: 0; }

[data-design="signal"] .principles h3 {
  font-size: 19px;
  font-weight: 800;
  text-transform: uppercase;
}

[data-design="signal"] .principles p {
  font-size: 14.5px;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.6;
}

/* ---------- Track record ---------- */

[data-design="signal"] .slider { position: relative; margin-top: 44px; }

[data-design="signal"] .slider-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
[data-design="signal"] .slider-track::-webkit-scrollbar { display: none; }

[data-design="signal"] .role {
  flex: 0 0 calc((100% - 48px) / 3);
  scroll-snap-align: start;
  border: 2px solid var(--line);
  padding: 30px;
}

[data-design="signal"] .role-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--accent-text);
}

[data-design="signal"] .role h3 {
  font-size: 22px;
  font-weight: 800;
  text-transform: uppercase;
  margin-top: 6px;
}
[data-design="signal"] .role h3 a { color: inherit; }
[data-design="signal"] .role h3 a:hover { color: var(--accent-text); opacity: 1; }
[data-design="signal"] .role h3 .ext { font-size: 15px; color: var(--faint); }

[data-design="signal"] .role p {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 12px;
}

[data-design="signal"] .role-more {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
  border-style: dashed;
}
[data-design="signal"] .role-more-text {
  font-size: 24px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--muted);
}
[data-design="signal"] .role-more a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--accent-text);
  text-decoration: underline;
}

[data-design="signal"] .founder {
  margin-top: 32px;
  display: flex;
  justify-content: space-between;
  gap: 48px;
}

[data-design="signal"] .founder h3 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

[data-design="signal"] .founder-copy { max-width: 820px; }

[data-design="signal"] .founder-copy p {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
  margin-top: 8px;
  text-transform: uppercase;
}

[data-design="signal"] .founder-awards {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2;
  color: var(--faint);
  white-space: nowrap;
  text-align: right;
}

/* ---------- Contact (full orange band) ---------- */

[data-design="signal"] .contact {
  background: var(--accent-solid);
  color: var(--accent-contrast);
  padding: 100px 0;
}

[data-design="signal"] .contact-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

[data-design="signal"] .contact h2 {
  font-size: clamp(2.6rem, 6.4vw, 5.75rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

[data-design="signal"] .contact .section-lede {
  color: var(--accent-contrast);
  font-weight: 500;
  max-width: 520px;
  opacity: 0.9;
}

[data-design="signal"] .contact .btn-lg {
  margin-top: 36px;
  background: #0a0a0a;
  color: #f5f5f2;
  text-transform: none;
  font-weight: 800;
}
[data-design="signal"] .contact .btn-lg:hover { background: #262626; filter: none; }

[data-design="signal"] .contact-links {
  font-family: var(--font-mono);
  font-size: 12.5px;
  margin-top: 22px;
  color: var(--accent-contrast);
}
[data-design="signal"] .contact-links a { color: var(--accent-contrast); text-decoration: underline; }

/* ---------- Footer ---------- */

[data-design="signal"] .footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding-top: 30px;
}

[data-design="signal"] .footer-name {
  font-weight: 800;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

[data-design="signal"] .footer-address {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--muted);
  margin-top: 8px;
}
[data-design="signal"] .footer-address a { color: var(--text); text-decoration: underline; }

[data-design="signal"] .footer-tag {
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--muted);
}

[data-design="signal"] .footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 18px;
  padding-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  [data-design="signal"] .role { flex-basis: calc((100% - 24px) / 2); }

  [data-design="signal"] .approach-grid { grid-template-columns: 1fr; }
  [data-design="signal"] .approach-copy {
    border-right: none;
    border-bottom: 2px solid var(--line);
    padding-right: 0;
  }
  [data-design="signal"] .principles { padding-left: 0; }

  [data-design="signal"] .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  [data-design="signal"] .stat { border-bottom: 2px solid var(--line); }
  [data-design="signal"] .stat:nth-child(2) { border-right: none; }
  [data-design="signal"] .stat:nth-child(n+3) { border-bottom: none; }
}

@media (max-width: 820px) {
  [data-design="signal"] .site-nav { display: none; }

  [data-design="signal"] .card-grid { grid-template-columns: 1fr; }
  [data-design="signal"] .card { border-right: none; }
  [data-design="signal"] .card:nth-last-child(2) { border-bottom: 2px solid var(--line); }

  [data-design="signal"] .stack-band { grid-template-columns: 1fr; }
  [data-design="signal"] .stack-col {
    border-right: none;
    border-bottom: 2px solid var(--line);
  }
  [data-design="signal"] .stack-col:last-child { border-bottom: none; }

  [data-design="signal"] .founder { flex-direction: column; gap: 24px; }
  [data-design="signal"] .founder-awards { text-align: left; white-space: normal; }
}

@media (max-width: 640px) {
  [data-design="signal"] .hero-inner { padding-top: 64px; padding-bottom: 56px; }

  [data-design="signal"] .btn { padding: 16px 28px; font-size: 15px; }

  [data-design="signal"] .stats { grid-template-columns: 1fr; }
  [data-design="signal"] .stat { border-right: none; border-bottom: 2px solid var(--line); padding: 32px; }
  [data-design="signal"] .stat:last-child { border-bottom: none; }

  [data-design="signal"] .role { flex-basis: 86%; }

  [data-design="signal"] .clients-list li { font-size: 18px; }
  [data-design="signal"] .clients-list li + li::before { margin-right: 24px; font-size: 14px; }
  [data-design="signal"] .clients-inner,
  [data-design="signal"] .clients-list { gap: 14px 24px; }

  [data-design="signal"] .section { padding: 64px 0 48px; }

  [data-design="signal"] .footer-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  /* phones: logo + theme toggle only — the hero CTA is right below */
  [data-design="signal"] .nav-cta { display: none; }
  [data-design="signal"] .logo { font-size: clamp(12.5px, 4.2vw, 15px); }
  [data-design="signal"] .header-inner { gap: 16px; }
}
