/* ============================================================
   ENERSCRIPT — Design System
   Display: Space Grotesk · Body: Manrope · Labels: JetBrains Mono
   ============================================================ */

:root {
  /* Core palette */
  --ink:        oklch(0.17 0.02 265);   /* near-black blue */
  --ink-2:      oklch(0.23 0.025 265);  /* raised dark surface */
  --ink-3:      oklch(0.30 0.03 265);   /* hairlines on dark */
  --paper:      oklch(0.98 0.006 95);   /* warm off-white */
  --paper-2:    oklch(0.955 0.008 95);  /* sunk light surface */
  --line:       oklch(0.89 0.008 95);   /* hairline on light */

  --text:       oklch(0.22 0.02 265);   /* body text on light */
  --text-soft:  oklch(0.45 0.02 265);   /* muted text on light */
  --text-faint: oklch(0.60 0.015 265);

  --on-dark:        oklch(0.97 0.006 95);
  --on-dark-soft:   oklch(0.78 0.012 265);
  --on-dark-faint:  oklch(0.62 0.02 265);

  /* Accents — shared chroma/lightness, varied hue */
  --accent:     oklch(0.56 0.19 264);   /* electric indigo-blue */
  --accent-700: oklch(0.46 0.17 264);
  --accent-300: oklch(0.72 0.13 264);
  --signal:     oklch(0.80 0.14 200);   /* restrained cyan */

  /* Spacing scale */
  --s-1: 0.5rem;  --s-2: 0.75rem;  --s-3: 1rem;  --s-4: 1.5rem;
  --s-5: 2rem;    --s-6: 3rem;     --s-7: 4.5rem; --s-8: 7rem;
  --gutter: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1280px;

  --radius: 14px;
  --radius-lg: 22px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-1: 0 1px 2px oklch(0.17 0.02 265 / 0.04), 0 4px 16px oklch(0.17 0.02 265 / 0.05);
  --shadow-2: 0 2px 6px oklch(0.17 0.02 265 / 0.06), 0 18px 50px oklch(0.17 0.02 265 / 0.09);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}
body {
  font-family: "Manrope", system-ui, sans-serif;
  background: var(--paper);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--accent); color: var(--paper); }

/* ---------- Typography ---------- */
.display, h1, h2, h3 { font-family: "Space Grotesk", system-ui, sans-serif; font-weight: 600; line-height: 1.02; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.8rem, 7.5vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.6rem); letter-spacing: -0.025em; }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); letter-spacing: -0.015em; line-height: 1.1; }
p { text-wrap: pretty; }

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 1.6em; height: 1px;
  background: var(--accent);
  opacity: 0.6;
}
.eyebrow.on-dark { color: var(--signal); }
.eyebrow.on-dark::before { background: var(--signal); }
.eyebrow.center::before { display: none; }

.lead { font-size: clamp(1.1rem, 1.5vw, 1.4rem); color: var(--text-soft); line-height: 1.5; }
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
section { position: relative; }
.section-pad { padding-block: clamp(4.5rem, 9vw, 9rem); }
.section-head { max-width: 56ch; }
.section-head h2 { margin-top: var(--s-3); }
.section-head .lead { margin-top: var(--s-4); }

.dark { background: var(--ink); color: var(--on-dark); }
.dark h1, .dark h2, .dark h3 { color: var(--on-dark); }
.dark .lead { color: var(--on-dark-soft); }
.sunk { background: var(--paper-2); }

/* ---------- Buttons ---------- */
.btn {
  --bg: var(--ink); --fg: var(--paper);
  position: relative;
  display: inline-flex; align-items: center; gap: 0.6em;
  padding: 0.95em 1.5em;
  background: var(--bg); color: var(--fg);
  border-radius: 100px;
  font-weight: 600; font-size: 0.98rem;
  letter-spacing: -0.01em; white-space: nowrap;
  transition: transform 0.5s var(--ease), box-shadow 0.4s var(--ease), background 0.3s;
  will-change: transform;
}
.btn:hover { box-shadow: var(--shadow-2); }
.btn .arrow { transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-accent { --bg: var(--accent); --fg: var(--paper); }
.btn-accent:hover { --bg: var(--accent-700); }
.btn-ghost { --bg: transparent; --fg: var(--text); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--ink); }
.dark .btn-ghost { --fg: var(--on-dark); box-shadow: inset 0 0 0 1.5px var(--ink-3); }
.dark .btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--on-dark-soft); }
.btn-light { --bg: var(--paper); --fg: var(--ink); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-weight: 600; color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: gap 0.3s var(--ease);
}
.link-arrow:hover { gap: 0.85em; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), backdrop-filter 0.4s;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.site-header.scrolled {
  background: oklch(0.98 0.006 95 / 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 1px 0 var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 0.6em; font-family: "Space Grotesk"; font-weight: 700; font-size: 1.22rem; letter-spacing: -0.03em; color: var(--ink); }
.brand .logo { height: 30px; width: auto; display: block; }
.site-header .brand .logo { height: 32px; }
.footer-brand .brand .logo { height: 34px; }
.brand .mark {
  width: 26px; height: 26px; border-radius: 7px;
  background: var(--accent);
  position: relative; overflow: hidden;
  box-shadow: inset 0 0 0 1px oklch(1 0 0 / 0.15);
}
.brand .mark::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(135deg, transparent 40%, oklch(1 0 0 / 0.55) 41% 47%, transparent 48%),
    linear-gradient(135deg, transparent 58%, oklch(1 0 0 / 0.35) 59% 63%, transparent 64%);
}
.nav { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); }
.nav-links { display: flex; gap: clamp(1rem, 2vw, 2rem); }
.nav-links a {
  font-size: 0.95rem; font-weight: 500; color: var(--text-soft);
  position: relative; padding-block: 0.3em;
  transition: color 0.25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1.5px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { transform: scaleX(1); }
.nav-cta { display: inline-flex; gap: 0.7rem; align-items: center; }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; }
.menu-toggle span { position: relative; width: 22px; height: 1.6px; background: var(--ink); transition: 0.3s var(--ease); }
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; width: 22px; height: 1.6px; background: var(--ink); transition: 0.3s var(--ease); }
.menu-toggle span::before { top: -7px; }
.menu-toggle span::after { top: 7px; }
body.nav-open .menu-toggle span { background: transparent; }
body.nav-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 900px) {
  .menu-toggle { display: flex; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0;
    flex-direction: column; gap: 0;
    background: var(--paper); padding: var(--gutter);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: 0.35s var(--ease);
    box-shadow: var(--shadow-2);
  }
  body.nav-open .nav-links { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 0.9em 0; font-size: 1.2rem; border-bottom: 1px solid var(--line); }
  .nav .nav-cta .btn:not(.nav-primary) { display: none; }
}

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0; transform: translateY(22px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }
[data-reveal][data-delay="5"] { transition-delay: 0.40s; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- Placeholder imagery ---------- */
.ph {
  position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(135deg, oklch(0.92 0.01 265) 0 10px, oklch(0.94 0.008 265) 10px 20px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  display: grid; place-items: center;
  color: var(--text-faint);
}
.ph.dark-ph {
  background: repeating-linear-gradient(135deg, oklch(0.24 0.02 265) 0 10px, oklch(0.27 0.025 265) 10px 20px);
  border-color: var(--ink-3); color: var(--on-dark-faint);
}
.ph .ph-label {
  font-family: "JetBrains Mono", monospace; font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.4em 0.8em; border: 1px solid currentColor; border-radius: 100px;
  background: oklch(1 0 0 / 0.5);
}
.dark-ph .ph-label { background: oklch(0.17 0.02 265 / 0.5); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--on-dark); padding-block: clamp(3.5rem, 6vw, 5.5rem) 2.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: var(--s-5); }
.footer-grid h4 { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--on-dark-faint); margin-bottom: 1.2em; font-weight: 500; }
.footer-col a { display: block; color: var(--on-dark-soft); padding: 0.35em 0; transition: color 0.25s, padding-left 0.25s; }
.footer-col a:hover { color: var(--on-dark); padding-left: 4px; }
.footer-brand .brand { color: var(--on-dark); margin-bottom: 1.2rem; }
.footer-brand p { color: var(--on-dark-soft); max-width: 38ch; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin-top: clamp(3rem, 5vw, 4.5rem); padding-top: 2rem; border-top: 1px solid var(--ink-3); color: var(--on-dark-faint); font-size: 0.88rem; }
.footer-social { display: flex; gap: 0.7rem; }
.footer-social a { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; box-shadow: inset 0 0 0 1px var(--ink-3); transition: 0.3s var(--ease); color: var(--on-dark-soft); }
.footer-social a:hover { background: var(--accent); color: var(--paper); box-shadow: none; transform: translateY(-2px); }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- Cards / grids reused across pages ---------- */
.grid { display: grid; gap: var(--s-4); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2.2rem);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.3s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: transparent; }
.card .num { font-family: "JetBrains Mono", monospace; font-size: 0.8rem; color: var(--accent); letter-spacing: 0.1em; }
.card h3 { margin: 0.8rem 0 0.6rem; }
.card p { color: var(--text-soft); }

/* generic utilities */
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-1{margin-top:var(--s-1)} .mt-2{margin-top:var(--s-2)} .mt-3{margin-top:var(--s-3)} .mt-4{margin-top:var(--s-4)} .mt-5{margin-top:var(--s-5)} .mt-6{margin-top:var(--s-6)}
.muted { color: var(--text-soft); }
.flex { display: flex; }
.gap-2 { gap: var(--s-2); } .gap-3 { gap: var(--s-3); } .gap-4 { gap: var(--s-4); }
.wrap-btns { display: flex; flex-wrap: wrap; gap: 0.85rem; }