/* ─────────────────────────────────────────────────────────────────
   CORVUS — CTRT Capital stylesheet
   A tactical web3 hedge fund. Disciplined alpha in digital assets.
   (The light inverse of TRCT VC, anchored by one ink-black corvus.)
   ───────────────────────────────────────────────────────────────── */

:root {
  --paper:     #F7F7F5;
  --white:     #FFFFFF;
  --mist:      #ECECEF;
  --hairline:  #DEDEE2;
  --hairline-2:#CCCCD2;

  --ink:       #0A0A10;
  --graphite:  #2F2F35;
  --slate:     #55555E;
  --ash:       #8A8A93;

  /* monochrome metallic — no color accent; graphite / ink / silver only */
  --accent:        #2F2F35;
  --accent-dim:    #0A0A10;
  --accent-bright: #8A8A93;

  --chrome-light: #ECECEF;
  --chrome-mid:   #8A8A93;
  --chrome-dark:  #2F2F35;

  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease:     cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);

  --pad-x: clamp(20px, 5vw, 72px);
  --maxw:  1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
img, svg { max-width: 100%; }
::selection { background: var(--ink); color: var(--paper); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad-x); }
.section { padding-block: clamp(64px, 9vw, 140px); }
.section--tight { padding-block: clamp(48px, 6vw, 88px); }
.divider { border: 0; border-top: 1px solid var(--hairline); margin: 0; }

.display { font-family: var(--font-display); font-weight: 400; line-height: 1.04; letter-spacing: -0.015em; font-size: clamp(2.6rem, 6vw, 5rem); margin: 0; }
.h2 { font-family: var(--font-display); font-weight: 400; line-height: 1.1; letter-spacing: -0.01em; font-size: clamp(1.8rem, 3.4vw, 2.9rem); margin: 0 0 0.6em; }
.h3 { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.15rem, 1.8vw, 1.45rem); line-height: 1.2; margin: 0 0 0.4em; }
.lede { font-size: clamp(1.05rem, 1.5vw, 1.3rem); color: var(--graphite); max-width: 62ch; }
.body { color: var(--slate); max-width: 64ch; }
.body a { color: var(--ink); border-bottom: 1px solid var(--hairline-2); }
.body a:hover { border-bottom-color: var(--ink); }

.eyebrow { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ash); display: inline-flex; align-items: center; gap: 0.7em; margin: 0 0 1.4em; }
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--accent); }
.figure { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

/* wordmark (chrome) + corvus lockup */
.wordmark { font-family: "Share Tech Mono", ui-monospace, monospace; font-weight: 400; letter-spacing: 0.04em; background: linear-gradient(115deg, #0A0A10, #34343C 50%, #0A0A10); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand { display: inline-flex; align-items: center; gap: 14px; }
.brand .corvus { flex: none; display: block; }

.btn { display: inline-flex; align-items: center; gap: 0.55em; font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.04em; padding: 0.85em 1.4em; border-radius: 2px; transition: all .25s var(--ease); }
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--graphite); }
.btn--ghost { border: 1px solid var(--hairline-2); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); background: var(--white); }

.card { background: var(--white); border: 1px solid var(--hairline); border-radius: 4px; padding: clamp(20px, 2.4vw, 34px); transition: border-color .25s var(--ease), transform .25s var(--ease); }
.card:hover { border-color: var(--hairline-2); transform: translateY(-2px); }
.card .kicker { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.grid { display: grid; gap: clamp(16px, 1.6vw, 24px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 860px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 560px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--hairline); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.nav .wordmark { font-size: 1.4rem; }
.nav-links { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.nav-links a { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.03em; color: var(--slate); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--ink); }
.nav-toggle { display: none; }
@media (max-width: 760px) {
  .nav-links { position: fixed; inset: 76px 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--white); border-bottom: 1px solid var(--hairline); padding: 8px var(--pad-x) 20px; visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(-16px); transition: opacity .34s var(--ease-out), transform .42s var(--ease-out), visibility .42s; }
  .nav-links.open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-links a { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--hairline); opacity: 0; transform: translateY(-8px); transition: opacity .3s var(--ease-out), transform .3s var(--ease-out), color .25s var(--ease); }
  .nav-links.open a { opacity: 1; transform: translateY(0); }
  .nav-links.open a:nth-child(1) { transition-delay: .07s; }
  .nav-links.open a:nth-child(2) { transition-delay: .12s; }
  .nav-links.open a:nth-child(3) { transition-delay: .17s; }
  .nav-links.open a:nth-child(4) { transition-delay: .22s; }
  .nav-links.open a:nth-child(5) { transition-delay: .27s; }
  .nav-toggle { display: inline-flex; font-family: var(--font-mono); font-size: 0.8rem; }
}
@media (max-width: 760px) and (prefers-reduced-motion: reduce) {
  .nav-links, .nav-links a { transition: opacity .15s linear; transform: none; }
}

.footer { background: var(--white); border-top: 1px solid var(--hairline); padding-block: clamp(40px, 5vw, 72px); }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 28px; }
.footer a { color: var(--slate); font-family: var(--font-mono); font-size: 0.8rem; }
.footer a:hover { color: var(--ink); }
.eco-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.eco-chip { border: 1px solid var(--hairline); border-radius: 2px; padding: 6px 10px; font-size: 0.72rem; }
.eco-chip:hover { border-color: var(--accent); color: var(--accent); }
.disclaimer { color: var(--ash); font-size: 0.72rem; font-family: var(--font-mono); line-height: 1.7; max-width: 92ch; margin-top: 28px; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 8px; top: 8px; }

.footer .corvus { height: 34px; }

/* ── article / blog ────────────────────────────────────────────── */
.article { max-width: 720px; margin: 0 auto; }
.article p { color: var(--slate); margin: 0 0 1.3em; }
.article h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.4rem, 2.4vw, 1.95rem); line-height: 1.15; letter-spacing: -0.01em; margin: 1.9em 0 0.5em; }
.article h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; margin: 1.6em 0 0.4em; }
.article ul { color: var(--slate); padding-left: 1.2em; margin: 0 0 1.3em; }
.article li { margin: 0.45em 0; }
.article strong { color: var(--ink); font-weight: 600; }
.article a { color: var(--ink); border-bottom: 1px solid var(--hairline-2); }
.article a:hover { border-bottom-color: var(--ink); }
.post-meta { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ash); letter-spacing: 0.04em; margin-top: 14px; }
.tldr { background: var(--white); border: 1px solid var(--hairline); border-left: 3px solid var(--ink); border-radius: 4px; padding: 22px 26px; margin: 0 0 2.2em; }
.tldr p { margin: 0 0 0.5em; color: var(--graphite); }
.tldr .kicker { color: var(--ink); }
.tldr ul { margin: 0.4em 0 0; }
.backlink { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ash); letter-spacing: 0.03em; }
.backlink:hover { color: var(--ink); }

/* ── mobile refinements ────────────────────────────────────────── */
@media (max-width: 640px) {
  .section { padding-block: clamp(52px, 11vw, 84px); }
  .section--tight { padding-block: clamp(40px, 8vw, 64px); }
  /* full-width, stacked CTAs in content (nav button keeps its own layout) */
  main .btn { display: flex; width: 100%; justify-content: center; padding-block: 1em; }
  main .btn + .btn { margin-top: 12px; }
  .lede { font-size: 1.08rem; }
  .article h1 { font-size: clamp(1.9rem, 7.5vw, 2.4rem) !important; }
}
@media (max-width: 560px) {
  /* tighter, shorter nav so the bold lockup fits small screens */
  .nav-inner { height: 64px; }
  .nav .wordmark { font-size: 1.3rem; }
  .brand { gap: 10px; }
  .nav-links { inset: 64px 0 auto 0; }
  .display { font-size: clamp(2rem, 8.5vw, 2.7rem); }
  .h2 { font-size: clamp(1.5rem, 6.4vw, 2.1rem); }
  .eyebrow { letter-spacing: 0.12em; }
  /* avoid edge-to-edge text crowding on phones */
  .tldr { padding: 18px 18px; }
}
@media (max-width: 380px) {
  .nav .wordmark { font-size: 1.15rem; }
  .nav .corvus { height: 32px; }
}

/* ── black header (obsidian nav) + wireframe mark ──────────────── */
.nav { background: color-mix(in srgb, #0A0A10 88%, transparent); border-bottom: 1px solid #1E1E26; }
.nav .corvus { color: #E8E8EC; }
.nav .wordmark { background: linear-gradient(105deg, #CFCFD4, #FFFFFF 50%, #CFCFD4); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav .nav-links a { color: #9A9AA1; }
.nav .nav-links a:hover, .nav .nav-links a[aria-current="page"] { color: #FFFFFF; }
.nav .btn--primary { background: var(--paper); color: var(--ink); }
.nav .btn--primary:hover { background: #FFFFFF; }
.nav .nav-toggle { border-color: #2E2E38; color: var(--paper); }
.nav .nav-toggle:hover { border-color: #4A4A55; background: transparent; }
.footer .corvus { color: var(--ink); }
@media (max-width: 760px) {
  .nav-links { background: #0A0A10; border-bottom: 1px solid #1E1E26; }
  .nav-links a { border-bottom: 1px solid #1E1E26; }
}

/* ── cutting-edge layer: grid backdrop · ticker · HUD cards ─────── */
main, .footer { position: relative; z-index: 1; }

.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--hairline) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hairline) 1px, transparent 1px);
  background-size: 74px 74px;
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(130% 90% at 50% -10%, #000 28%, transparent 78%);
          mask-image: radial-gradient(130% 90% at 50% -10%, #000 28%, transparent 78%);
}

/* live theme ticker — black command strip under the header */
.ticker { position: relative; z-index: 2; background: #0A0A10; border-bottom: 1px solid #1E1E26; overflow: hidden; white-space: nowrap; }
.ticker-track { display: inline-flex; will-change: transform; animation: ticker 38s linear infinite; }
.ticker-track span { display: inline-block; padding: 9px 0; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: #6E6E77; }
.ticker:hover .ticker-track { animation-play-state: paused; }
@keyframes ticker { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .ticker-track { animation: none; } }

/* HUD cards — targeting corners + depth on hover */
.card { position: relative; transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease); }
.card::before, .card::after { content: ""; position: absolute; width: 11px; height: 11px; pointer-events: none; opacity: 0; transition: opacity .25s var(--ease); }
.card::before { top: 9px; left: 9px; border-top: 1px solid var(--graphite); border-left: 1px solid var(--graphite); }
.card::after { bottom: 9px; right: 9px; border-bottom: 1px solid var(--graphite); border-right: 1px solid var(--graphite); }
.card:hover { border-color: var(--ash); box-shadow: 0 18px 50px -28px rgba(10,10,16,.45); }
.card:hover::before, .card:hover::after { opacity: 0.75; }