/* ============================================================
   KERAUNOS COMPUTE — design system v3
   Enterprise AI-infrastructure (CoreWeave / Crusoe / Nscale-grade)
   Cool ink + clean white · one disciplined blue accent · Geist
   ============================================================ */

:root {
  /* dark (default) */
  --bg:        #0A0D13;
  --bg-elev:   #11151D;
  --bg-elev-2: #161B25;
  --fg:        #EEF1F6;
  --muted:     #98A1AF;
  --faint:     #5E6675;
  --line:      rgba(255,255,255,0.09);
  --line-2:    rgba(255,255,255,0.15);

  /* accent — refined electric blue */
  --accent:    #5B8CFF;
  --accent-2:  #87A9FF;
  --accent-ink:#070B16;
  --accent-soft: rgba(91,140,255,0.12);
  --accent-line: rgba(91,140,255,0.32);

  --ok: #34C77B;

  --sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  /* "mono" slots now render in the same professional sans — no monospace anywhere */
  --mono: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --maxw: 1280px;
  --gut: clamp(20px, 5vw, 64px);
  --pad: clamp(72px, 9vw, 144px);
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

[data-theme="light"] {
  --bg:        #FFFFFF;
  --bg-elev:   #F6F7F9;
  --bg-elev-2: #FFFFFF;
  --fg:        #0A0D13;
  --muted:     #59616F;
  --faint:     #98A0AE;
  --line:      rgba(10,13,19,0.10);
  --line-2:    rgba(10,13,19,0.16);
  --accent-soft: rgba(76,116,230,0.09);
  --accent-line: rgba(76,116,230,0.30);
}

[data-theme="tint"] {
  --bg:        #0C1118;
  --bg-elev:   #131925;
  --bg-elev-2: #18202E;
  --fg:        #EEF1F6;
  --muted:     #9AA4B4;
  --faint:     #5E6675;
  --line:      rgba(255,255,255,0.10);
  --line-2:    rgba(255,255,255,0.16);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: #fff; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

h1,h2,h3,h4 { margin: 0; font-family: var(--sans); font-weight: 600; line-height: 1.04; letter-spacing: -0.025em; }

/* ---- layout ---- */
.panel { position: relative; background: var(--bg); color: var(--fg); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--gut); padding-right: var(--gut); }
.sec { padding-top: var(--pad); padding-bottom: var(--pad); }

/* ---- type ---- */
.h1 { font-size: clamp(40px, 6.2vw, 78px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.0; }
.h2 { font-size: clamp(30px, 4.2vw, 54px); font-weight: 600; letter-spacing: -0.028em; line-height: 1.05; }
.h3 { font-size: clamp(21px, 2.2vw, 28px); font-weight: 600; letter-spacing: -0.02em; }
.lead { font-size: clamp(18px, 1.7vw, 21px); line-height: 1.55; color: var(--muted); }
.body { font-size: 16.5px; line-height: 1.62; color: var(--muted); }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.accent { color: var(--accent); }
.mono { font-family: var(--mono); font-weight: 500; letter-spacing: 0.05em; }
.balance { text-wrap: balance; }

/* ---- eyebrow ---- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12.5px; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent);
  white-space: nowrap;
}
@media (max-width: 640px) { .eyebrow { white-space: normal; } }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); flex: none; }
.eyebrow--muted { color: var(--muted); }
.eyebrow--muted::before { background: var(--muted); box-shadow: none; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--sans); font-size: 15px; font-weight: 500; letter-spacing: -0.01em;
  padding: 13px 22px; border-radius: var(--radius-sm); cursor: pointer; white-space: nowrap;
  border: 1px solid transparent; transition: background .2s, border-color .2s, color .2s, transform .2s, box-shadow .2s;
}
.btn .ic { width: 16px; height: 16px; transition: transform .2s; }
.btn:hover .ic { transform: translateX(2px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-2); transform: translateY(-1px); box-shadow: 0 10px 30px -12px var(--accent); }
.btn--secondary { background: transparent; border-color: var(--line-2); color: var(--fg); }
.btn--secondary:hover { border-color: var(--fg); background: color-mix(in srgb, var(--fg) 6%, transparent); }
.btn--ghost { padding-inline: 0; }
.btn--ghost:hover .ic { transform: translateX(3px); }

/* ---- chip ---- */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em;
  padding: 7px 13px; border: 1px solid var(--line); border-radius: 100px; color: var(--muted); background: var(--bg-elev); white-space: nowrap;
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex: none; }
.chip .dot--ok { background: var(--ok); }

/* ---- card ---- */
.card {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(24px, 2.6vw, 34px); position: relative; transition: border-color .25s, transform .25s, background .25s;
}
.card--hover:hover { border-color: var(--accent-line); transform: translateY(-4px); box-shadow: 0 28px 56px -36px rgba(0,0,0,0.55); }

/* ---- linkedin pill ---- */
.li-link {
  display: inline-flex; align-items: center; gap: 8px; flex: none;
  font-size: 13px; font-weight: 500; letter-spacing: -0.01em;
  padding: 8px 14px; border: 1px solid var(--line-2); border-radius: 100px; color: var(--muted);
  transition: color .2s, border-color .2s, background .2s;
}
.li-link:hover { color: var(--fg); border-color: var(--accent); background: var(--accent-soft); }

/* ---- person photo ---- */
.media--person img { transition: transform .7s var(--ease); }
.person:hover .media--person img { transform: scale(1.035); }

/* ---- subtle hairline ---- */
.hr { height: 1px; background: var(--line); border: 0; }

/* ---- reveal (keyframe, static end-state, robust) ---- */
.reveal { opacity: 0; }
.reveal.in { opacity: 1; transform: none; animation: up .7s var(--ease) both; }
@keyframes up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .reveal, .reveal.in { opacity: 1 !important; transform: none !important; animation: none !important; } html { scroll-behavior: auto; } }

/* ---- background flourishes (subtle, hero only) ---- */
.glow { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; opacity: 0.5; }
.gridlines { position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 35%, #000 10%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 35%, #000 10%, transparent 75%);
  opacity: 0.6;
}

/* ---- media frame ---- */
.media { position: relative; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-elev-2); }
.media img, .media image-slot { display: block; width: 100%; height: 100%; object-fit: cover; }
.media--cinematic img { filter: saturate(0.92) contrast(1.02); }
.media__scrim { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, rgba(10,13,19,0.85) 100%); pointer-events: none; }

/* ---- table ---- */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { text-align: left; padding: 17px 18px; border-bottom: 1px solid var(--line); }
.tbl th { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); font-weight: 500; }
.tbl tr:last-child td { border-bottom: none; }

/* ---- underline link ---- */
.ul { position: relative; display: inline-flex; align-items: center; gap: 7px; }
.ul::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease); }
.ul:hover::after { transform: scaleX(1); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #262c38; border-radius: 10px; border: 3px solid var(--bg); }

/* empty image-slot placeholder (dark) */
image-slot::part(frame) { background: repeating-linear-gradient(135deg, #141922 0 16px, #0f131b 16px 32px) !important; }
image-slot::part(empty) { color: var(--faint) !important; font-family: var(--mono) !important; font-size: 12px !important; }

/* ============================================================
   NAV
   ============================================================ */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 60; transition: background .3s, border-color .3s, backdrop-filter .3s; border-bottom: 1px solid transparent; }
.nav--solid { background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); border-bottom-color: var(--line); }
.nav__in { display: flex; align-items: center; height: 66px; gap: 12px; padding: 0 var(--gut); max-width: var(--maxw); margin: 0 auto; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 17px; letter-spacing: -0.02em; }
.brand__tag { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.18em; color: var(--faint); border: 1px solid var(--line); padding: 2px 6px; border-radius: 5px; }
.nav__links { display: flex; gap: 6px; margin-left: 22px; }
.nav__link { font-size: 14.5px; color: var(--muted); padding: 8px 13px; border-radius: 8px; transition: color .2s, background .2s; }
.nav__link:hover { color: var(--fg); background: color-mix(in srgb, var(--fg) 6%, transparent); }
.nav__link[aria-current="page"] { color: var(--fg); }
.nav__right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav__burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line-2); background: transparent; border-radius: 9px; flex-direction: column; gap: 5px; align-items: center; justify-content: center; cursor: pointer; }
.nav__burger i { width: 17px; height: 1.6px; background: var(--fg); border-radius: 2px; }

.menu { position: fixed; inset: 0; z-index: 70; background: var(--bg); padding: var(--gut); display: flex; flex-direction: column; overflow-y: auto; transform: translateY(-100%); visibility: hidden; opacity: 0; transition: transform .45s var(--ease), opacity .3s ease, visibility 0s linear .45s; }
.menu--open { transform: none; visibility: visible; opacity: 1; transition: transform .45s var(--ease), opacity .3s ease; }
.menu__top { display: flex; align-items: center; height: 66px; justify-content: space-between; }
.menu__close { width: 42px; height: 42px; border: 1px solid var(--line-2); background: transparent; border-radius: 9px; color: var(--fg); font-size: 20px; cursor: pointer; }
.menu__links { margin-top: 28px; display: flex; flex-direction: column; }
.menu__link { font-size: clamp(30px, 9vw, 46px); font-weight: 600; letter-spacing: -0.03em; padding: 16px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; }
.menu__link .mono { font-size: 13px; color: var(--faint); }
html.menu-open { overflow: hidden; }

@media (max-width: 880px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: flex; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.foot { background: var(--bg-elev); border-top: 1px solid var(--line); }
.foot__grid { display: grid; grid-template-columns: 1.8fr 1fr 1.3fr; gap: 40px; padding-top: clamp(56px,7vw,88px); padding-bottom: 40px; }
.foot__col h4 { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); font-weight: 500; margin-bottom: 18px; }
.foot__col a { display: block; color: var(--muted); font-size: 14.5px; padding: 5px 0; width: fit-content; transition: color .2s; }
.foot__col a:hover { color: var(--fg); }
.foot__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 24px 0 44px; border-top: 1px solid var(--line); }
.foot__bottom span { font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--faint); }
@media (max-width: 760px) { .foot__grid { grid-template-columns: 1fr 1fr; gap: 32px; } .foot__col--brand { grid-column: 1 / -1; } }

/* ============================================================
   utility grids
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px,2.4vw,28px); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: clamp(16px,2vw,24px); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: clamp(16px,2vw,24px); }
@media (max-width: 940px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }