:root {
  --bg: #0a0a0a;
  --bg-subtle: #111111;
  --text-primary: #e8e8e8;
  --text-secondary: #888888;
  --text-dim: #555555;
  --accent: #00ff88;
  --accent-dim: #00ff8822;
  --accent-glow: #00ff8844;
  --border: #1a1a1a;
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

.skip-to-content {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  text-decoration: none;
}
.skip-to-content:focus { left: 0; }

html {
  font-size: 116%;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--text-dim) var(--bg);
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-display);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAVIGATION ---- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, var(--bg) 60%, transparent);
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--accent);
}

.nav-logo a {
  text-decoration: none;
  position: relative;
  display: inline-block;
  line-height: 0;
}

/* Green corner brackets framing the nav logo */
.nav-logo a::before {
  content: '';
  position: absolute;
  inset: -6px;
  pointer-events: none;
  --c: #00ff88;
  --t: 2px;
  --l: 14px;
  background:
    linear-gradient(var(--c), var(--c)) top    left  / var(--l) var(--t) no-repeat,
    linear-gradient(var(--c), var(--c)) top    left  / var(--t) var(--l) no-repeat,
    linear-gradient(var(--c), var(--c)) top    right / var(--l) var(--t) no-repeat,
    linear-gradient(var(--c), var(--c)) top    right / var(--t) var(--l) no-repeat,
    linear-gradient(var(--c), var(--c)) bottom left  / var(--l) var(--t) no-repeat,
    linear-gradient(var(--c), var(--c)) bottom left  / var(--t) var(--l) no-repeat,
    linear-gradient(var(--c), var(--c)) bottom right / var(--l) var(--t) no-repeat,
    linear-gradient(var(--c), var(--c)) bottom right / var(--t) var(--l) no-repeat;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-left: 2.5rem;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--accent);
  transition: color 0.3s, border-color 0.3s;
}

.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); }

/* ---- BRAND NAME ---- */
.ok-robot { color: var(--accent); }

/* ---- PAGE CONTENT (shared by subpages) ---- */
.page-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 11rem 3rem 4rem;
}

.page-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

.page-title {
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 1rem;
}

.page-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 300;
  margin-bottom: 3rem;
}

/* ---- FOOTER ---- */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2.5rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 4rem;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s;
}

footer a:hover { color: var(--accent); }

/* ---- HAMBURGER ---- */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  margin: 5px 0;
  transition: all 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- MOBILE ---- */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .hamburger { display: block; }
  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    z-index: 100;
  }
  .nav-links.open { display: flex; }
  .nav-links a { margin-left: 0; font-size: 1.2rem; }
  .page-content { padding: 10rem 1.5rem 3rem; }
  footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding: 2rem 1.5rem;
  }
}