/* Cygnik Tech — AI Consulting Site
   Editorial-technical aesthetic: dark canvas, fine grid, restrained type, monospace data
*/

:root {
  /* Brand */
  --brand-navy: #1B3A8B;
  --brand-cyan: #5BC8D6;

  /* Canvas — light editorial paper */
  --bg: #F6F4EF;
  --bg-2: #EFECE4;
  --bg-3: #E6E2D8;
  --line: rgba(22, 24, 28, 0.12);
  --line-strong: rgba(22, 24, 28, 0.22);
  --fg: #16181C;
  --fg-2: rgba(22, 24, 28, 0.72);
  --fg-3: rgba(22, 24, 28, 0.52);
  --fg-4: rgba(22, 24, 28, 0.36);

  /* Accent — deepened brand cyan for legibility on light, overridable by Tweaks */
  --accent: #0C8497;
  --accent-soft: rgba(12, 132, 151, 0.12);
  --accent-mid: rgba(12, 132, 151, 0.30);

  /* Type */
  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Geist", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

  /* Layout */
  --gutter: clamp(20px, 4vw, 56px);
  --max: 1440px;
  --col: calc((min(var(--max), 100vw - 2 * var(--gutter))) / 12);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
body { min-height: 100vh; min-height: 100dvh; overflow-x: hidden; }
/* lock scroll behind the mobile drawer */
html.nav-locked, html.nav-locked body { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: rgba(12,132,151,0.12); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

/* ==== Type scale ==== */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
}
.eyebrow .dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  transform: translateY(-1px);
}

h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -0.02em; }

.display {
  font-family: var(--serif);
  font-size: clamp(48px, 7.6vw, 120px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  font-weight: 400;
}
.display .it { font-style: italic; }

.h1 {
  font-family: var(--serif);
  font-size: clamp(40px, 5.6vw, 84px);
  line-height: 1.0;
  letter-spacing: -0.02em;
}
.h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.015em;
}
.h3 {
  font-family: var(--sans);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 500;
}

.lede {
  font-size: clamp(17px, 1.4vw, 22px);
  line-height: 1.45;
  color: var(--fg-2);
  max-width: 60ch;
  font-weight: 400;
}

p { line-height: 1.55; color: var(--fg-2); }

.mono { font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em; }

/* ==== Layout primitives ==== */
.shell {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.section { padding: clamp(80px, 10vw, 160px) 0; position: relative; }
.section--tight { padding: clamp(56px, 6vw, 96px) 0; }

.divider { height: 1px; background: var(--line); }
.divider-strong { height: 1px; background: var(--line-strong); }

/* fine grid background — used in hero etc. */
.gridbg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: calc(100% / 12) 80px;
  pointer-events: none;
  z-index: 0;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0.0) 90%);
}

/* ==== Nav ==== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  background: rgba(246, 244, 239, 0.74);
  border-bottom: 1px solid var(--line);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
.nav__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--sans);
  font-weight: 500;
  letter-spacing: 0.02em;
  font-size: 15px;
}
.nav__mark {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  position: relative;
}
.nav__links {
  display: flex; gap: 32px;
  font-size: 14px;
  color: var(--fg-2);
}
.nav__links a { position: relative; padding: 6px 0; transition: color .2s; }
.nav__links a:hover { color: var(--fg); }
.nav__links a.is-active { color: var(--fg); }
.nav__links a.is-active::after {
  content: "";
  position: absolute; bottom: -2px; left: 0; right: 0;
  height: 1px; background: var(--accent);
}
.nav__cta {
  display: inline-flex;
  align-items: center; gap: 10px;
  font-size: 13px;
  font-family: var(--mono);
  padding: 9px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: border-color .2s, background .2s;
}
.nav__cta:hover { border-color: var(--accent); background: var(--accent-soft); }
.nav__cta .arr { display: inline-block; transition: transform .2s; }
.nav__cta:hover .arr { transform: translateX(2px); }

/* ---- Mobile menu toggle + drawer ---- */
.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  margin: -8px -10px -8px 0;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
}
.nav__toggle-bar {
  display: block; width: 22px; height: 2px;
  background: var(--fg); border-radius: 2px;
  transition: transform .28s ease, opacity .2s ease;
}
.nav.is-open .nav__toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__drawer {
  position: fixed;
  top: 88px; left: 0; right: 0;
  max-height: calc(100dvh - 88px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 12px var(--gutter) calc(28px + env(safe-area-inset-bottom));
  transform: translateY(-12px);
  opacity: 0; pointer-events: none;
  transition: transform .28s cubic-bezier(.4,0,.2,1), opacity .24s ease;
  z-index: 90;
}
.nav.is-open .nav__drawer { transform: translateY(0); opacity: 1; pointer-events: auto; }
.nav__drawer-links { display: flex; flex-direction: column; }
.nav__drawer-links a {
  font-family: var(--serif);
  font-size: 28px; line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fg);
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center;
}
.nav__drawer-links a.is-active { color: var(--accent); }
.nav__drawer-links a.is-active::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); margin-right: 12px;
}
.nav__drawer-cta {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 24px;
  font-family: var(--mono); font-size: 14px;
  padding: 14px 22px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
}
.nav__drawer-cta .arr { transition: transform .2s; }

/* ==== Buttons ==== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--line-strong);
  transition: all .2s;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}
.btn--primary:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn--ghost { color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent); color: var(--fg); background: var(--accent-soft); }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }

/* ==== Footer ==== */
.footer {
  border-top: 1px solid var(--line);
  padding-top: 80px;
  padding-bottom: 32px;
  position: relative;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 80px;
}
.footer__col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 20px;
  font-weight: 500;
}
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer__col a { color: var(--fg-2); font-size: 14px; transition: color .15s; }
.footer__col a:hover { color: var(--accent); }
.footer__manifesto {
  font-family: var(--serif);
  font-size: clamp(24px, 2.4vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--fg);
  max-width: 22ch;
}
.footer__manifesto .it { font-style: italic; color: var(--accent); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.06em;
}
.footer__bottom .city {
  display: flex; align-items: center; gap: 8px;
}
.footer__bottom .pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-mid);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--accent-mid); }
  70% { box-shadow: 0 0 0 8px rgba(0,0,0,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,0,0,0); }
}

/* ==== Cards ==== */
.card {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 32px;
  border-radius: 4px;
  transition: border-color .2s, background .2s, transform .2s;
}
.card:hover {
  border-color: var(--line-strong);
}

/* ==== Marquee / page-section header ==== */
.section-head {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: end;
  margin-bottom: 64px;
}
.section-head .meta {
  display: flex; flex-direction: column; gap: 8px;
}
.section-head .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-3);
}
.section-head h2 { max-width: 18ch; }

/* responsive */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__inner { height: 68px; }
  .nav__brand img { height: 46px !important; }
  .nav__drawer { top: 68px; max-height: calc(100dvh - 68px); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__manifesto { grid-column: 1 / -1; margin-bottom: 16px; }
  .section-head { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 520px) {
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ==== Globe / orbital art ==== */
.globe {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}
.globe svg { width: 100%; height: 100%; }
.globe__core {
  position: absolute;
  width: 8%; height: 8%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--fg), var(--accent) 60%, transparent 100%);
  box-shadow: 0 0 40px var(--accent-mid);
}

/* shader-style mesh (CSS-only) */
.mesh {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 30% 20%, rgba(12, 132, 151, 0.10), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(27, 58, 139, 0.10), transparent 60%),
    radial-gradient(ellipse 50% 35% at 50% 100%, rgba(12, 132, 151, 0.07), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  opacity: 0.85;
  animation: meshDrift 24s ease-in-out infinite;
}
@keyframes meshDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2%, -1%) scale(1.05); }
}

/* tag chips */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--fg-2);
}
.chip--accent {
  border-color: var(--accent-mid);
  color: var(--accent);
  background: var(--accent-soft);
}

/* selection */
::selection { background: var(--accent); color: var(--bg); }

/* scroll bar */
html { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }

/* utility */
.center { text-align: center; }
.muted { color: var(--fg-3); }
.uppercase { text-transform: uppercase; letter-spacing: 0.14em; }

/* ==== Nav logo chip (shows full-color brand mark on dark nav) ==== */
.nav__logo-chip {
  background: #fff;
  border-radius: 7px;
  padding: 5px 11px;
  display: inline-flex;
  align-items: center;
  box-shadow: 0 2px 14px rgba(0,0,0,0.28);
  transition: box-shadow .2s, transform .2s;
}
.nav__brand:hover .nav__logo-chip { box-shadow: 0 4px 22px rgba(91,200,214,0.28); transform: translateY(-1px); }
.nav__logo-chip img { height: 26px; width: auto; display: block; }
@media (max-width: 520px) { .nav__logo-chip img { height: 22px; } }

/* ==== Footer social row ==== */
.footer__social-row {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.footer__social-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.footer__social-links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.footer__social-links a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-2);
  letter-spacing: 0.04em;
  transition: color .15s;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.footer__social-links a svg { flex-shrink: 0; display: block; }
.footer__social-links a:hover { color: var(--accent); }