/* ============================================================
   BTIG POWER — Design System
   Brand: technical, industrial, premium event-power engineering
   Palette: deep charcoal/graphite + premium gold (#D4A02A) + warm amber glow
   ============================================================ */

:root, [data-theme="dark"] {
  /* Surfaces — graphite/charcoal */
  --color-bg: #0d0f12;
  --color-surface: #14171c;
  --color-surface-2: #191d23;
  --color-surface-offset: #1f242b;
  --color-surface-offset-2: #262c34;
  --color-divider: #23282f;
  --color-border: #2c333c;

  /* Text */
  --color-text: #eef1f4;
  --color-text-muted: #9aa3ad;
  --color-text-faint: #5f6873;
  --color-text-inverse: #0d0f12;

  /* Primary accent — BTiG premium gold */
  --color-primary: #d4a02a;
  --color-primary-hover: #e8b942;
  --color-primary-active: #a87d18;
  --color-primary-soft: rgba(212, 160, 42, 0.13);
  --color-primary-glow: rgba(212, 160, 42, 0.42);

  /* Secondary — warm amber (energy / status) */
  --color-amber: #f6c454;
  --color-amber-soft: rgba(246, 196, 84, 0.15);

  /* Steel highlight */
  --color-steel: #7d8794;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.45);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.55);
  --shadow-glow: 0 0 0 1px rgba(212,160,42,0.28), 0 12px 40px rgba(212,160,42,0.2);

  --content-narrow: 680px;
  --content-default: 1040px;
  --content-wide: 1280px;

  --font-display: 'Cabinet Grotesk', 'Arial Narrow', sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', ui-monospace, monospace;

  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.15rem);
  --text-2xl: clamp(2rem, 1.3rem + 2.6vw, 3.4rem);
  --text-3xl: clamp(2.6rem, 1.4rem + 4.2vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;
}

/* Light mode */
[data-theme="light"] {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-surface-2: #f7f8fa;
  --color-surface-offset: #eceef1;
  --color-surface-offset-2: #e3e6ea;
  --color-divider: #e2e5e9;
  --color-border: #d4d8dd;
  --color-text: #14171c;
  --color-text-muted: #5a636d;
  --color-text-faint: #97a0aa;
  --color-text-inverse: #ffffff;
  --color-primary-soft: rgba(212, 160, 42, 0.1);
  --shadow-sm: 0 1px 2px rgba(20,23,28,0.06);
  --shadow-md: 0 8px 24px rgba(20,23,28,0.10);
  --shadow-lg: 0 24px 60px rgba(20,23,28,0.14);
  --shadow-glow: 0 0 0 1px rgba(212,160,42,0.22), 0 12px 40px rgba(212,160,42,0.14);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}
body {
  min-height: 100dvh; line-height: 1.65;
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--color-text); background: var(--color-bg);
  overflow-x: hidden;
}
img, picture, video, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.05; text-wrap: balance; font-weight: 700; letter-spacing: -0.01em; }
p { text-wrap: pretty; }
table { border-collapse: collapse; width: 100%; }

::selection { background: var(--color-primary); color: #1a1206; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

a, button, input, textarea, select {
  transition: color var(--transition-interactive), background var(--transition-interactive),
              border-color var(--transition-interactive), box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration:.01ms!important; transition-duration:.01ms!important; scroll-behavior:auto!important; }
}
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--content-wide); margin-inline: auto; padding-inline: clamp(var(--space-5), 5vw, var(--space-12)); }
.wrap--narrow { max-width: var(--content-narrow); }
.wrap--default { max-width: var(--content-default); }
.section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); }
.section--tight { padding-block: clamp(var(--space-12), 6vw, var(--space-20)); }

/* ---------- Eyebrow / labels ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--color-primary); font-weight: 500;
}
.eyebrow::before {
  content:""; width: 28px; height: 2px; background: var(--color-primary);
}
.eyebrow--center { justify-content: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-body); font-weight: 600; font-size: var(--text-sm);
  padding: 0.85rem 1.5rem; border-radius: var(--radius-full);
  letter-spacing: 0.01em; white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #1a1206; box-shadow: 0 8px 24px rgba(212,160,42,0.3); }
.btn--primary:hover { background: var(--color-primary-hover); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(212,160,42,0.42); }
.btn--ghost { border: 1px solid var(--color-border); color: var(--color-text); }
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-2px); }
.btn--lg { padding: 1.05rem 2rem; font-size: var(--text-base); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in oklab, var(--color-bg) 80%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.header--scrolled { border-bottom-color: var(--color-border); background: color-mix(in oklab, var(--color-bg) 92%, transparent); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); }
.brand svg { height: 30px; width: auto; }
.brand__name { font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; }
.brand__name b { color: var(--color-primary); }
.nav { display: flex; align-items: center; gap: var(--space-1); }
.nav a {
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted);
  padding: 0.5rem 0.85rem; border-radius: var(--radius-full);
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--color-text); background: var(--color-surface-offset); }
.header__actions { display: flex; align-items: center; gap: var(--space-3); }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-full); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.icon-btn:hover { color: var(--color-primary); border-color: var(--color-primary); }
.nav-toggle { display: none; }

/* mobile nav */
@media (max-width: 880px) {
  .nav, .header__actions .btn { display: none; }
  .nav-toggle { display: inline-grid; }
  .nav.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 72px; left: 0; right: 0;
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
    padding: var(--space-4); gap: var(--space-1);
  }
  .nav.open a { padding: 0.8rem 1rem; font-size: var(--text-base); }
}

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 90vh; display: flex; align-items: center; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: -2; }
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
/* Hero always uses a dark scrim — the background photo is dark in both themes */
.hero__bg::after {
  content:""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, #0a0c0f 4%, rgba(10,12,15,0.82) 42%, rgba(10,12,15,0.42) 100%),
    linear-gradient(0deg, #0a0c0f 2%, transparent 48%);
}
.hero__content { padding-block: clamp(var(--space-20), 14vh, 9rem); max-width: 760px; }
.hero h1 { font-size: var(--text-3xl); font-weight: 800; margin: var(--space-5) 0 var(--space-6); color: #fff; }
.hero h1 .accent { color: var(--color-primary); }
.hero__lede { font-size: var(--text-lg); color: rgba(238,241,244,0.86); max-width: 560px; margin-bottom: var(--space-8); }
.hero .eyebrow { color: var(--color-primary); }
.hero .stat__num { color: #fff; }
.hero .stat__label { color: rgba(238,241,244,0.72); }
.hero .btn--ghost { border-color: rgba(255,255,255,0.3); color: #fff; }
.hero .btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.hero__stats { display: flex; flex-wrap: wrap; gap: clamp(var(--space-6), 5vw, var(--space-12)); margin-top: clamp(var(--space-12), 8vh, var(--space-20)); }
.stat__num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-xl); color: var(--color-text); }
.stat__num span { color: var(--color-primary); }
.stat__label { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.12em; margin-top: var(--space-1); }

/* ---------- Section heading ---------- */
.sec-head { max-width: 640px; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.sec-head--center { margin-inline: auto; text-align: center; }
.sec-head h2 { font-size: var(--text-2xl); margin: var(--space-4) 0 var(--space-5); }
.sec-head p { color: var(--color-text-muted); font-size: var(--text-lg); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: var(--space-6); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 980px) { .grid--3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 720px) { .grid--3, .grid--2 { grid-template-columns: 1fr; } }

.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-8);
  position: relative; overflow: hidden;
  transition: border-color var(--transition-interactive), transform var(--transition-interactive), box-shadow var(--transition-interactive);
}
.card:hover { border-color: color-mix(in oklab, var(--color-primary) 50%, var(--color-border)); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card__icon {
  width: 52px; height: 52px; border-radius: var(--radius-md);
  display: grid; place-items: center; margin-bottom: var(--space-5);
  background: var(--color-primary-soft); color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
}
.card__icon svg { width: 26px; height: 26px; }
.card h3 { font-size: var(--text-lg); margin-bottom: var(--space-3); }
.card p { color: var(--color-text-muted); font-size: var(--text-sm); }
.card__num { position: absolute; top: var(--space-5); right: var(--space-6); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); }
.card ul { list-style: none; margin-top: var(--space-4); display: grid; gap: var(--space-2); }
.card ul li { display: flex; gap: var(--space-2); font-size: var(--text-sm); color: var(--color-text-muted); }
.card ul li::before { content:""; flex: none; width: 6px; height: 6px; margin-top: 0.55em; border-radius: 2px; background: var(--color-primary); }

/* ---------- Split feature ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 6vw, var(--space-20)); align-items: center; }
.split--rev .split__media { order: 2; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } .split--rev .split__media { order: 0; } }
.split__media img { border-radius: var(--radius-lg); border: 1px solid var(--color-border); box-shadow: var(--shadow-md); }
.split__body h2 { font-size: var(--text-xl); margin: var(--space-4) 0 var(--space-5); }
.split__body p { color: var(--color-text-muted); margin-bottom: var(--space-5); }
.feat-list { list-style: none; display: grid; gap: var(--space-4); }
.feat-list li { display: flex; gap: var(--space-3); }
.feat-list .chk { flex: none; width: 24px; height: 24px; border-radius: var(--radius-full); background: var(--color-primary-soft); color: var(--color-primary); display: grid; place-items: center; }
.feat-list .chk svg { width: 14px; height: 14px; }
.feat-list strong { display: block; color: var(--color-text); font-size: var(--text-base); }
.feat-list span { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---------- Stat band ---------- */
.band { background: var(--color-surface); border-block: 1px solid var(--color-border); }
.band__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-8); text-align: center; }
@media (max-width: 720px) { .band__grid { grid-template-columns: repeat(2,1fr); gap: var(--space-10); } }
.band__num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); color: var(--color-text); }
.band__num span { color: var(--color-primary); }
.band__label { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-2); }

/* ---------- Case studies ---------- */
.case { display: grid; grid-template-columns: 1.1fr 1fr; gap: 0; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); overflow: hidden; }
.case--rev { grid-template-columns: 1fr 1.1fr; }
.case--rev .case__media { order: 2; }
@media (max-width: 880px) { .case, .case--rev { grid-template-columns: 1fr; } .case--rev .case__media { order: 0; } }
.case__media { position: relative; min-height: 320px; }
.case__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case__tag { position: absolute; top: var(--space-5); left: var(--space-5); z-index: 2; background: var(--color-primary); color:#1a1206; font-size: var(--text-xs); font-weight: 700; padding: 0.35rem 0.8rem; border-radius: var(--radius-full); letter-spacing: 0.05em; }
.case__body { padding: clamp(var(--space-8), 4vw, var(--space-16)); display: flex; flex-direction: column; justify-content: center; }
.case__body h3 { font-size: var(--text-xl); margin: var(--space-3) 0 var(--space-4); }
.case__body > p { color: var(--color-text-muted); margin-bottom: var(--space-6); }
.case__metrics { display: flex; flex-wrap: wrap; gap: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.case__metrics .m-num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); color: var(--color-primary); }
.case__metrics .m-lab { font-size: var(--text-xs); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- Partner ---------- */
.partner { display: flex; align-items: center; gap: var(--space-5); background: var(--color-surface-offset); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); }
.partner__mark { flex: none; width: 56px; height: 56px; border-radius: var(--radius-md); background: var(--color-bg); display: grid; place-items: center; color: var(--color-amber); border: 1px solid var(--color-border); }
.partner__mark svg { width: 30px; height: 30px; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(120deg, #1a0608, var(--color-surface)); border: 1px solid color-mix(in oklab, var(--color-primary) 35%, var(--color-border)); border-radius: var(--radius-xl); padding: clamp(var(--space-12), 7vw, var(--space-24)); text-align: center; }
.cta-band::before { content:""; position: absolute; width: 480px; height: 480px; background: radial-gradient(circle, var(--color-primary-glow), transparent 70%); top: -200px; right: -120px; filter: blur(20px); opacity: 0.5; }
.cta-band h2 { font-size: var(--text-2xl); margin-bottom: var(--space-5); position: relative; }
.cta-band p { color: var(--color-text-muted); font-size: var(--text-lg); max-width: 540px; margin: 0 auto var(--space-8); position: relative; }
.cta-band .hero__cta { justify-content: center; position: relative; }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-6); counter-reset: step; }
@media (max-width: 980px) { .steps { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { padding: var(--space-6); border-left: 2px solid var(--color-border); position: relative; }
.step__n { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary); letter-spacing: 0.1em; }
.step h3 { font-size: var(--text-lg); margin: var(--space-3) 0 var(--space-3); }
.step p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ---------- Page hero (interior) ---------- */
.page-hero { padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-10), 5vw, var(--space-16)); border-bottom: 1px solid var(--color-divider); position: relative; }
.page-hero h1 { font-size: var(--text-2xl); margin: var(--space-4) 0 var(--space-5); max-width: 16ch; }
.page-hero p { color: var(--color-text-muted); font-size: var(--text-lg); max-width: 60ch; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(var(--space-10), 6vw, var(--space-20)); }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }
.field { display: grid; gap: var(--space-2); margin-bottom: var(--space-5); }
.field label { font-size: var(--text-sm); font-weight: 600; }
.field input, .field textarea, .field select {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 0.8rem 1rem; font-size: var(--text-sm); width: 100%;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--color-primary); outline: none; box-shadow: 0 0 0 3px var(--color-primary-soft); }
.contact-info li { display: flex; gap: var(--space-4); padding: var(--space-5) 0; border-bottom: 1px solid var(--color-divider); }
.contact-info li:first-child { padding-top: 0; }
.contact-info .ci-icon { flex: none; width: 44px; height: 44px; border-radius: var(--radius-md); background: var(--color-primary-soft); color: var(--color-primary); display: grid; place-items: center; }
.contact-info .ci-icon svg { width: 22px; height: 22px; }
.contact-info .ci-label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-faint); }
.contact-info .ci-value { font-size: var(--text-base); color: var(--color-text); font-weight: 500; }
.note { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ---------- Footer ---------- */
.footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding-block: var(--space-16) var(--space-8); }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-8); margin-bottom: var(--space-12); }
@media (max-width: 880px) { .footer__top { grid-template-columns: 1fr 1fr; gap: var(--space-10); } }
@media (max-width: 520px) { .footer__top { grid-template-columns: 1fr; } }
.footer__brand p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-4); max-width: 34ch; }
.footer__col h4 { font-family: var(--font-body); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-text-faint); margin-bottom: var(--space-4); }
.footer__col a { display: block; color: var(--color-text-muted); font-size: var(--text-sm); padding: var(--space-2) 0; }
.footer__col a:hover { color: var(--color-primary); }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); padding-top: var(--space-8); border-top: 1px solid var(--color-divider); color: var(--color-text-faint); font-size: var(--text-xs); }

/* ---------- Reveal animation ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(0.16,1,0.3,1), transform .7s cubic-bezier(0.16,1,0.3,1); }
.js .reveal.in { opacity: 1; transform: none; }
/* No-JS / fallback: always visible */
.reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1 !important; transform: none !important; } }

/* ---------- Utility ---------- */
.text-amber { color: var(--color-amber); }
.mono { font-family: var(--font-mono); }