/* Refine IT — shared site styles for Direction B (Technical Grid) */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --rf-bg: #0B1220;
  --rf-bg-2: #111A2E;
  --rf-bg-3: #1B2640;
  --rf-fg: #E6EAF2;
  --rf-mute: rgba(230,234,242,0.65);
  --rf-mute-2: rgba(230,234,242,0.45);
  --rf-line: rgba(255,255,255,0.08);
  --rf-line-strong: rgba(255,255,255,0.18);
  --rf-accent: #6EA8FE;
  --rf-accent-2: #3B82F6;
  --rf-good: #34D399;
  --rf-warm: #F59E0B;
  --rf-h-sans: 'Space Grotesk', system-ui, sans-serif;
  --rf-b-sans: 'Inter', system-ui, sans-serif;
  --rf-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--rf-bg);
  color: var(--rf-fg);
  font-family: var(--rf-b-sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

.wrap { max-width: 1320px; margin: 0 auto; padding: 0 48px; }

/* Top status bar */
.topbar { display:flex; justify-content:space-between; padding: 14px 48px; font-family: var(--rf-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--rf-mute-2); border-bottom: 1px solid var(--rf-line); }
.topbar span b { color: var(--rf-accent); font-weight: 500; margin-right: 6px; }

/* Nav */
.nav { display:grid; grid-template-columns: auto 1fr auto; align-items:center; padding: 22px 0; border-bottom: 1px solid var(--rf-line); gap: 48px; }
.brand { display:flex; align-items:center; gap: 12px; font-family: var(--rf-h-sans); font-weight: 600; font-size: 16px; letter-spacing: -0.01em; color: var(--rf-fg); text-decoration: none; }
.brand-mark { width: 26px; height: 26px; border-radius: 6px; background: linear-gradient(140deg, var(--rf-accent-2), var(--rf-accent)); position:relative; }
.brand-mark::after { content:""; position:absolute; inset: 6px; border:1.5px solid var(--rf-bg); border-radius: 2px; }
.nav-links { display:flex; gap: 28px; font-size: 13px; color: rgba(230,234,242,0.85); justify-self: end; margin-right: 24px; }
.nav-links a { text-decoration:none; padding: 6px 0; border-bottom: 1px solid transparent; transition: border-color .15s, color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--rf-accent); border-color: var(--rf-accent); }
.nav-actions { display:flex; gap: 8px; align-items:center; }
.btn-ghost-d { padding: 9px 16px; border: 1px solid var(--rf-line-strong); border-radius: 8px; font-size: 12.5px; color: #fff; text-decoration:none; font-family: var(--rf-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.btn-primary-d { padding: 9px 16px; border-radius: 8px; font-size: 12.5px; background: #fff; color: var(--rf-bg); text-decoration:none; font-family: var(--rf-mono); letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500; }

/* Section helpers */
.sec-head { display:flex; justify-content:space-between; align-items:end; gap: 60px; margin-bottom: 48px; }
.sec-eye { font-family: var(--rf-mono); font-size: 11px; letter-spacing:0.18em; text-transform:uppercase; color: var(--rf-accent); margin-bottom: 14px; }
.sec-title { font-family: var(--rf-h-sans); font-size: 44px; font-weight: 500; letter-spacing:-0.025em; margin: 0; max-width: 720px; line-height: 1.05; color: var(--rf-fg); }
.sec-title .dim { color: var(--rf-mute-2); }
.sec-meta { font-family: var(--rf-mono); font-size: 11px; letter-spacing: 0.14em; color: var(--rf-mute); text-transform: uppercase; min-width: 200px; text-align:right; }

/* Buttons */
.btn-pri { padding: 13px 20px; background: var(--rf-accent); color: var(--rf-bg); border-radius: 10px; font-size: 14px; font-weight: 600; text-decoration:none; display:inline-flex; align-items:center; gap: 8px; }
.btn-sec { padding: 13px 20px; border:1px solid var(--rf-line-strong); border-radius: 10px; font-size: 14px; font-weight: 500; text-decoration:none; color:#fff; display:inline-flex; align-items:center; gap: 8px; }

/* Footer */
.footer { padding: 64px 0 36px; border-top: 1px solid var(--rf-line); margin-top: 80px; }
.ft { display:grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--rf-line); }
.ft-h { font-family: var(--rf-mono); font-size: 11px; letter-spacing: 0.14em; text-transform:uppercase; color: var(--rf-mute-2); margin-bottom: 14px; }
.ft-list a { display:block; color: rgba(255,255,255,0.78); text-decoration:none; padding: 5px 0; font-size: 13.5px; }
.ft-list a:hover { color: var(--rf-accent); }
.ft-bot { display:flex; justify-content:space-between; padding-top: 24px; font-family: var(--rf-mono); font-size: 11px; letter-spacing: 0.12em; text-transform:uppercase; color: var(--rf-mute-2); }

/* Generic page padding */
.page { padding: 56px 0 0; }
.page-head { padding: 32px 0 64px; border-bottom: 1px solid var(--rf-line); }
.page-eye { font-family: var(--rf-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--rf-accent); margin-bottom: 18px; }
.page-h1 { font-family: var(--rf-h-sans); font-weight: 500; font-size: clamp(48px, 6vw, 88px); line-height: 0.98; letter-spacing: -0.035em; margin: 0; max-width: 880px; }
.page-h1 .dim { color: var(--rf-mute-2); }
.page-sub { color: var(--rf-mute); font-size: 17px; line-height: 1.55; max-width: 620px; margin-top: 24px; }

/* ============================================================ */
/* === MOBILE RESPONSIVE LAYER ================================ */
/* ============================================================ */

/* Hamburger nav button — injected into every page's nav by tweaks.js.
   Hidden on desktop, visible only on mobile. */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--rf-line-strong);
  border-radius: 8px;
  padding: 10px 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  align-items: stretch;
  margin: 0;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px;
  background: var(--rf-fg); border-radius: 1px;
  transition: transform .22s ease, opacity .18s ease;
  transform-origin: center;
}
.nav.open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav.open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* === Tablet (≤1024px) — light adjustments === */
@media (max-width: 1024px) {
  .wrap { padding: 0 28px; }
  .topbar { padding: 12px 28px; }
  .sec-head { gap: 32px; }
  .sec-title { font-size: 36px; }
  .ft { grid-template-columns: 2fr 1fr 1fr; }
}

/* === Mobile (≤768px) — main responsive layer === */
@media (max-width: 768px) {
  .wrap { padding: 0 18px; }

  /* Topbar — keep status, drop version meta */
  .topbar { padding: 10px 18px; font-size: 9.5px; gap: 12px; letter-spacing: 0.12em; }
  .topbar span:last-child { display: none; }

  /* Nav — brand left, hamburger right; links hidden until menu opened */
  .nav { grid-template-columns: 1fr auto; gap: 12px; padding: 16px 0; position: relative; }
  .nav-toggle { display: flex; }
  .nav-links, .nav-actions { display: none; }
  .nav.open .nav-links,
  .nav.open .nav-actions {
    display: flex; flex-direction: column;
    width: 100%;
    margin: 0;
  }
  .nav.open .nav-links {
    grid-column: 1 / -1;
    gap: 0;
    padding: 12px 0 4px;
    border-top: 1px solid var(--rf-line);
    margin-top: 12px;
  }
  .nav.open .nav-links a {
    padding: 14px 4px;
    border-bottom: 1px solid var(--rf-line);
    font-size: 15px;
  }
  .nav.open .nav-actions {
    grid-column: 1 / -1;
    gap: 8px;
    padding-bottom: 8px;
  }
  .nav.open .nav-actions a {
    text-align: center;
    width: 100%;
  }
  .brand { font-size: 15px; }

  /* Section headers — stack title + meta */
  .sec-head {
    flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 32px;
  }
  .sec-meta { text-align: left; min-width: 0; }
  .sec-title { font-size: 28px; line-height: 1.1; }

  /* Page heads — tighter */
  .page-head { padding: 18px 0 36px; }
  .page-h1 { font-size: clamp(34px, 9.5vw, 52px); }
  .page-sub { font-size: 15px; margin-top: 18px; }

  /* Buttons — scale down a touch */
  .btn-pri, .btn-sec { padding: 12px 16px; font-size: 13px; }
  .btn-ghost-d, .btn-primary-d { padding: 10px 14px; font-size: 11.5px; }

  /* Footer — single column */
  .footer { padding: 48px 0 24px; margin-top: 56px; }
  .ft { grid-template-columns: 1fr; gap: 28px; padding-bottom: 28px; }
  .ft-bot { flex-direction: column; gap: 8px; align-items: flex-start; padding-top: 20px; }
}

/* === Small mobile (≤480px) — final tightening === */
@media (max-width: 480px) {
  .wrap { padding: 0 14px; }
  .topbar { padding: 9px 14px; font-size: 9px; }
  .sec-title { font-size: 24px; }
  .page-h1 { font-size: clamp(30px, 9vw, 44px); }
}