/* ============================================================
   DESIGN TOKENS — edit these to reskin the whole site
   ============================================================ */
:root {
  /* Colors */
  --bg:          #111418;
  --bg-soft:     #1A1F26;
  --text:        #EEF0F2;
  --text-soft:   #9DAAB8;
  --muted:       #6B7A8D;
  --accent:      #2EC4B6;   /* turquoise-green */
  --accent-hi:   #4DD9CC;
  --accent-soft: rgba(46, 196, 182, 0.14);
  --line:        rgba(238, 240, 242, 0.08);

  /* Typography */
  --font-display: "DM Serif Display", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Layout */
  --container: 1180px;
  --gutter:    clamp(1.25rem, 4vw, 2.5rem);
}

/* ============================================================
   RESET + BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle grid backdrop that fades toward the middle of the page */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 75%);
          mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 75%);
  pointer-events: none;
}

a   { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.status-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}

.section__title {
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  margin-bottom: 2rem;
  max-width: 20ch;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--text);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.18s ease;
}
.btn:hover          { transform: translateY(-1px); }
.btn--primary       { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-hi); border-color: var(--accent-hi); }
.btn--ghost:hover   { background: var(--text); color: var(--bg); }
.btn--light         { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn--light:hover   { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.btn--small         { padding: 0.5rem 1rem;     font-size: 0.82rem; }
.btn--large         { padding: 1rem 1.9rem;     font-size: 0.95rem; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.5rem var(--gutter);
  z-index: 10;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.nav__mark { color: var(--accent); font-size: 1.1em; }

.nav__links { display: flex; gap: 2rem; }
.nav__links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--text-soft);
  transition: color 0.2s;
}
.nav__links a:hover { color: var(--accent); }

@media (max-width: 720px) {
  .nav__links { display: none; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(3rem, 9vw, 6rem) var(--gutter) clamp(5rem, 12vw, 8rem);
}
.hero::before {
  content: "";
  position: absolute;
  top: -10%;
  right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 60%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}
.hero__title {
  font-size: clamp(2.75rem, 7.5vw, 5.75rem);
  max-width: 18ch;
  margin-bottom: 1.75rem;
  animation: fadeUp 0.8s ease both;
}
.hero__subtitle {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--text-soft);
  max-width: 52ch;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.8s 0.1s ease both;
}
.hero__cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.2s ease both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   FEATURES
   ============================================================ */
.features {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(4rem, 9vw, 7rem) var(--gutter);
  border-top: 1px solid var(--line);
}
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  margin-top: 2rem;
}
.feature {
  padding: 2rem 1.5rem 2rem 0;
  border-top: 1px solid var(--line);
}
.feature + .feature { border-left: 1px solid var(--line); padding-left: 2rem; }
.feature__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 2rem;
  font-variant-numeric: tabular-nums;
}
.feature h3 { font-size: 1.35rem; margin-bottom: 0.75rem; }
.feature p  { color: var(--text-soft); font-size: 0.95rem; }

@media (max-width: 720px) {
  .feature + .feature { border-left: none; padding-left: 0; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(4rem, 9vw, 7rem) var(--gutter);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  border-top: 1px solid var(--line);
}
.about__content p       { color: var(--text-soft); max-width: 48ch; }
.about__content p + p   { margin-top: 1.25rem; }

.about__visual {
  aspect-ratio: 4 / 5;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 2.25rem 1.5rem 1.5rem;
  position: relative;
}
.about__visual::before {
  content: "PERFORMANCE — ILLUSTRATIVE";
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.12em;
}
.about__visual svg { width: 100%; height: 100%; display: block; }

/* Chart parts */
.chart__grid line    { stroke: var(--line); stroke-width: 1; }
.chart__area         { fill: var(--accent); opacity: 0.1; }
.chart__line         { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.chart__dot          { fill: var(--accent); }
.chart__dot--halo    { fill: var(--accent); opacity: 0.3; }
.chart__label        { fill: var(--muted); font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.08em; }

@media (max-width: 800px) {
  .about { grid-template-columns: 1fr; }
}

/* ============================================================
   CTA
   ============================================================ */
.cta {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(5rem, 10vw, 8rem) var(--gutter);
  text-align: center;
  border-top: 1px solid var(--line);
}
.cta::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, var(--accent-soft) 0%, transparent 60%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}
.cta .eyebrow { justify-content: center; }
.cta h2 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  margin-bottom: 1.25rem;
  max-width: 20ch;
  margin-inline: auto;
}
.cta > p {
  color: var(--text-soft);
  margin-bottom: 2.5rem;
  max-width: 44ch;
  margin-inline: auto;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  max-width: var(--container);
  margin: 0 auto;
  padding: 3rem var(--gutter) 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}
.footer__brand {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.footer__links { display: flex; gap: 1.5rem; }
.footer__links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}
.footer__links a:hover { color: var(--accent); }
.footer__disclaimer {
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: 75ch;
  margin-bottom: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}