/* BinaryWaves — design system
   Palette: abyssal blue ground, two interfering accents (signal cyan + carrier amber).
   Type: Chakra Petch (display) / IBM Plex Sans (body) / IBM Plex Mono (labels). */

:root {
  --abyss: #060913;
  --panel: #0c1322;
  --panel-2: #111b30;
  --line: rgba(124, 160, 212, 0.16);
  --ink: #e9eef7;
  --dim: #93a0b5;
  --cyan: #4fd9e8;
  --amber: #ffb454;
  --display: "Chakra Petch", "Segoe UI", sans-serif;
  --body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1120px;
  --radius: 10px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--abyss);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- type ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}

h1, h2, h3 { font-family: var(--display); line-height: 1.12; }

.hero-heading {
  font-size: clamp(2.75rem, 7.5vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-heading {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  font-weight: 700;
}

.section-heading {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.accent { color: var(--cyan); }

.lead {
  color: var(--dim);
  font-size: 1.15rem;
  max-width: 40em;
  margin-top: 1.25rem;
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 9, 19, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-mark { width: 36px; height: 20px; color: var(--cyan); }

.brand-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.brand-name em, .footer-brand em { font-style: normal; color: var(--cyan); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--dim);
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.is-active { color: var(--ink); }

.nav-cta {
  font-family: var(--mono);
  font-size: 0.85rem !important;
  color: var(--cyan) !important;
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 999px;
  transition: border-color 0.2s, background 0.2s;
}

.nav-cta:hover { border-color: var(--cyan); background: rgba(79, 217, 232, 0.08); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  transition: transform 0.25s, opacity 0.25s;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.hero-eyebrow { color: var(--cyan); }

.hero-sub {
  color: var(--dim);
  font-size: 1.2rem;
  max-width: 36em;
  margin-top: 1.5rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.25rem; }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--radius);
  transition: transform 0.15s, background 0.2s, border-color 0.2s, color 0.2s;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--cyan);
  color: #04202a;
}

.btn-primary:hover { background: #7ae4f0; }

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- sections ---------- */

.section { padding: 6.5rem 0; }

.section-alt {
  background: linear-gradient(180deg, var(--panel) 0%, var(--abyss) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-more { margin-top: 3.5rem; text-align: center; }

.page-hero {
  padding: 6rem 0 4rem;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 70% 120% at 80% -20%, rgba(79, 217, 232, 0.10), transparent 60%),
    var(--abyss);
}

.page-hero-tall { padding: 9rem 0; border-bottom: 0; }

.page-hero .hero-actions { margin-top: 2rem; }

/* ---------- service cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  text-decoration: none;
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}

.card:hover {
  border-color: rgba(79, 217, 232, 0.55);
  background: var(--panel-2);
  transform: translateY(-4px);
}

.card-index {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--amber);
}

.card h3 { font-size: 1.3rem; font-weight: 600; }

.card p { color: var(--dim); font-size: 0.98rem; flex: 1; }

.card-link {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--cyan);
}

/* ---------- process ---------- */

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
  list-style: none;
  counter-reset: none;
}

.process li {
  border-top: 2px solid var(--line);
  padding-top: 1.25rem;
}

.process-index {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--cyan);
  display: block;
  margin-bottom: 0.75rem;
}

.process h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }

.process p { color: var(--dim); font-size: 0.95rem; }

/* ---------- work ---------- */

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.work-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.9rem 1.75rem;
  text-decoration: none;
  transition: border-color 0.25s, transform 0.25s;
}

.work-card:hover { border-color: rgba(255, 180, 84, 0.5); transform: translateY(-4px); }

.work-tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.work-card h3 { font-size: 1.2rem; font-weight: 600; margin: 0.8rem 0 0.5rem; }

.work-card p { color: var(--dim); font-size: 0.95rem; }

/* ---------- about teaser / stats ---------- */

.about-teaser {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-teaser .lead { margin-bottom: 2rem; }

.stat-list {
  list-style: none;
  display: grid;
  gap: 1.25rem;
}

.stat-list li {
  border-left: 2px solid var(--cyan);
  padding-left: 1.25rem;
}

.stat-list strong {
  font-family: var(--display);
  font-size: 2.2rem;
  font-weight: 700;
  display: block;
  line-height: 1.1;
}

.stat-list span { color: var(--dim); font-size: 0.95rem; }

/* ---------- split / feature list (service + about pages) ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.split > div > p { color: var(--dim); }

.feature-list {
  list-style: none;
  display: grid;
  gap: 1.75rem;
}

.feature-list li {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}

.feature-list h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.4rem; }

.feature-list p { color: var(--dim); font-size: 0.97rem; }

/* ---------- chips ---------- */

.chip-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.chip-list li {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  background: var(--panel);
}

/* ---------- case studies ---------- */

.case-list { display: grid; gap: 1.5rem; }

.case {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.case-stats {
  list-style: none;
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.case-stats strong {
  font-family: var(--display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--cyan);
  display: block;
  line-height: 1.1;
}

.case-stats span { color: var(--dim); font-size: 0.9rem; }

.case-body h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 1rem; }

.case-body p { color: var(--dim); margin-bottom: 0.9rem; font-size: 0.99rem; }

.case-body strong { color: var(--ink); font-weight: 600; }

/* ---------- team ---------- */

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.team-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  text-align: center;
}

.team-avatar {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  border: 1px solid rgba(79, 217, 232, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  color: var(--cyan);
  background: rgba(79, 217, 232, 0.06);
}

.team-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.4rem; }

.team-card p { color: var(--dim); font-size: 0.95rem; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 100% at 50% 120%, rgba(79, 217, 232, 0.08), transparent 65%),
    var(--abyss);
  padding: 6rem 0 2.5rem;
}

.footer-cta { text-align: center; margin-bottom: 5rem; }

.footer-heading {
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1.75rem;
}

.footer-mail {
  font-family: var(--mono);
  font-size: clamp(1rem, 2.6vw, 1.35rem);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 217, 232, 0.4);
  padding-bottom: 3px;
  transition: border-color 0.2s;
}

.footer-mail:hover { border-color: var(--cyan); }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.footer-brand { font-family: var(--display); font-weight: 700; }

.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }

.footer-links a {
  color: var(--dim);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--ink); }

.footer-copy { color: var(--dim); font-size: 0.85rem; }

/* ---------- reveal animation ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */

@media (max-width: 920px) {
  .card-grid, .work-grid, .team-grid { grid-template-columns: 1fr 1fr; }
  .process { grid-template-columns: 1fr 1fr; gap: 2rem 1.25rem; }
  .split, .about-teaser { grid-template-columns: 1fr; gap: 2.5rem; }
  .case { grid-template-columns: 1fr; gap: 1.5rem; padding: 1.75rem; }
  .case-stats { display: flex; gap: 2.5rem; }
}

@media (max-width: 640px) {
  .section { padding: 4.5rem 0; }
  .card-grid, .work-grid, .team-grid, .process { grid-template-columns: 1fr; }
  .hero { min-height: 76vh; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--abyss);
    border-bottom: 1px solid var(--line);
    display: none;
    padding: 0.5rem 24px 1.25rem;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 0.8rem 0; font-size: 1.05rem; width: 100%; }
  .nav-cta { margin-top: 0.75rem; width: auto; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .work-card:hover { transform: none; }
}