/* =========================================================
   AI Trading Signals — Design Tokens
   Palette: Ink Navy / Slate panels / Signal Teal + Amber accents
   Type: Space Grotesk (display) · IBM Plex Sans (body) · IBM Plex Mono (data)
   ========================================================= */

:root {
  --ink:        #0B1220;   /* page background */
  --panel:      #121A2B;   /* card / panel background */
  --panel-2:    #17203570; /* subtle panel on panel */
  --line:       #23304A;   /* hairline borders */
  --text:       #EDEFF5;   /* primary text */
  --text-dim:   #9AA6C1;   /* secondary text */
  --teal:       #3ED9C4;   /* "signal up" / primary accent */
  --amber:      #F2A94E;   /* caution / secondary accent */
  --blue:       #5B7CFA;   /* links / info */
  --red:        #EF6461;   /* "signal down" / error */

  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body:    "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --radius: 10px;
  --max-w: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1em; color: var(--text); }
.dim { color: var(--text-dim); }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,18,32,0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
  color: var(--text);
}
.brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 10px var(--teal); }
.brand:hover { text-decoration: none; }

nav.main-nav { display: flex; gap: 28px; }
nav.main-nav a {
  color: var(--text-dim); font-size: .95rem; font-weight: 500;
}
nav.main-nav a:hover, nav.main-nav a[aria-current="page"] { color: var(--text); text-decoration: none; }

.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--text); border-radius: 8px; padding: 8px 10px; }

.cta-btn {
  display: inline-block;
  background: var(--teal);
  color: #06231F;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}
.cta-btn:hover { text-decoration: none; filter: brightness(1.08); }
.cta-btn.ghost {
  background: transparent; color: var(--text); border: 1px solid var(--line);
}

/* ---------- Hero / Ticker signature element ---------- */
.hero {
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(600px 300px at 85% -10%, #3ED9C422, transparent 60%),
    radial-gradient(500px 260px at 5% 0%, #5B7CFA1a, transparent 60%);
}
.eyebrow {
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--teal); margin-bottom: 14px;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }

.ticker-tape {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
  white-space: nowrap;
  margin-top: 44px;
}
.ticker-tape .track {
  display: inline-flex;
  animation: scroll-left 32s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .ticker-tape .track { animation: none; }
}
.ticker-tape .item {
  font-family: var(--font-mono);
  font-size: .85rem;
  padding: 12px 22px;
  border-right: 1px solid var(--line);
  display: inline-flex; align-items: center; gap: 8px;
}
.ticker-tape .up { color: var(--teal); }
.ticker-tape .down { color: var(--red); }
@keyframes scroll-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Sections / Cards ---------- */
section { padding: 64px 0; }
section.alt { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 36px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card .num {
  font-family: var(--font-mono); color: var(--text-dim); font-size: .8rem;
}

.article-card { display: block; color: var(--text); }
.article-card:hover { text-decoration: none; border-color: var(--teal); }
.article-card .tag {
  display: inline-block; font-family: var(--font-mono); font-size: .72rem;
  color: var(--amber); border: 1px solid #F2A94E44; border-radius: 999px;
  padding: 3px 10px; margin-bottom: 12px; letter-spacing: .04em;
}
.article-card h3 { margin-bottom: 8px; }
.article-card .meta { font-family: var(--font-mono); font-size: .78rem; color: var(--text-dim); margin-top: 14px; }

/* ---------- Disclaimer banner ---------- */
.disclaimer {
  border: 1px solid #F2A94E55;
  background: #F2A94E14;
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: .92rem;
  color: var(--text-dim);
}
.disclaimer strong { color: var(--amber); }

/* ---------- Article page ---------- */
.article-hero { padding: 56px 0 24px; border-bottom: 1px solid var(--line); }
.breadcrumb { font-family: var(--font-mono); font-size: .78rem; color: var(--text-dim); margin-bottom: 18px; }
.breadcrumb a { color: var(--text-dim); }
article.content { max-width: 760px; margin: 48px auto; }
article.content h2 { margin-top: 1.6em; }
article.content ul, article.content ol { color: var(--text); padding-left: 1.3em; }
article.content li { margin-bottom: .5em; }
.related { max-width: 760px; margin: 0 auto 64px; }
.related a { display: block; margin-bottom: 8px; }

/* ---------- Forms ---------- */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .9rem; margin-bottom: 6px; color: var(--text-dim); }
.field input, .field textarea {
  width: 100%; background: var(--ink); border: 1px solid var(--line);
  color: var(--text); border-radius: 8px; padding: 12px 14px; font-family: var(--font-body);
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 28px;
  margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-grid h4 { font-size: .85rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 14px; }
.footer-grid a { display: block; color: var(--text-dim); font-size: .92rem; margin-bottom: 10px; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--line); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: .82rem; color: var(--text-dim); flex-wrap: wrap; gap: 12px;
}

/* ---------- 404 ---------- */
.error-page { text-align: center; padding: 120px 0; }
.error-page .code { font-family: var(--font-mono); font-size: 5rem; color: var(--teal); margin-bottom: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  nav.main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
}