/* ═══════════════════════════════════════════════════════════════
   dProspector — Design System
   Signal Amber · Space Grotesk / Inter / JetBrains Mono
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Signal Amber */
  --amber:      #F59E0B;
  --amber-50:   #FEF3C7;
  --amber-100:  #FDE68A;
  --amber-300:  #FCD34D;
  --amber-600:  #D97706;
  --amber-700:  #B45309;
  --amber-900:  #78350F;

  /* Ink & neutrals */
  --ink:        #0B0B0C;
  --ink-2:      #3B3B3F;
  --ink-3:      #8A8A90;
  --ink-4:      #C7C4BB;

  /* Surfaces */
  --canvas:     #F5F3EE;
  --panel:      #FBFAF6;
  --panel-2:    #FFFFFF;
  --rule:       #E6E3DB;
  --rule-strong:#D4D0C4;

  /* Dark theme */
  --dark:       #0B0F14;
  --dark-2:     #131820;
  --dark-3:     #1C232D;
  --dark-rule:  #2A3441;

  /* Semantic */
  --success:    #15803D;
  --danger:     #B91C1C;
  --info:       #1D4ED8;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Spacing scale */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-7: 32px; --s-8: 40px;
  --s-9: 48px; --s-10:64px; --s-11:80px; --s-12:96px; --s-13:128px;

  /* Radii */
  --r-1: 3px; --r-2: 6px; --r-3: 8px; --r-4: 12px; --r-5: 16px; --r-full: 999px;

  /* Shadow */
  --sh-1: 0 1px 2px rgba(11,11,12,0.04), 0 1px 1px rgba(11,11,12,0.02);
  --sh-2: 0 4px 12px rgba(11,11,12,0.06), 0 2px 4px rgba(11,11,12,0.03);
  --sh-3: 0 12px 32px rgba(11,11,12,0.08), 0 4px 8px rgba(11,11,12,0.04);
  --sh-amber: 0 10px 32px rgba(245,158,11,0.18), 0 2px 6px rgba(245,158,11,0.10);

  /* Layout */
  --nav-h: 72px;
  --page-max: 1280px;
  --page-max-wide: 1440px;
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ── Container ─────────────────────────────────────────────────── */
.container {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 32px;
}
.container-wide { max-width: var(--page-max-wide); margin: 0 auto; padding: 0 32px; }
@media (max-width: 768px) { .container, .container-wide { padding: 0 20px; } }

/* ── Typography helpers ────────────────────────────────────────── */
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 20px; height: 1px; background: var(--amber);
}
.eyebrow.on-dark { color: rgba(255,255,255,0.72); }
.eyebrow.on-dark::before { background: var(--amber); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--ink);
}
h1 { font-size: clamp(44px, 6vw, 80px); letter-spacing: -0.035em; line-height: 1.0; }
h2 { font-size: clamp(32px, 4vw, 52px); letter-spacing: -0.03em; line-height: 1.05; }
h3 { font-size: clamp(22px, 2.2vw, 30px); letter-spacing: -0.02em; line-height: 1.15; }
h4 { font-size: 18px; line-height: 1.3; }
p { max-width: 68ch; }
.lead { font-size: 19px; line-height: 1.55; color: var(--ink-2); font-weight: 400; }
.amber { color: var(--amber); }
strong { font-weight: 600; color: var(--ink); }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 14.5px;
  letter-spacing: -0.005em;
  padding: 12px 22px;
  border-radius: var(--r-3);
  transition: all .15s ease;
  cursor: pointer;
  white-space: nowrap;
  line-height: 1;
  border: 1px solid transparent;
}
.btn-lg { padding: 16px 28px; font-size: 15.5px; }
.btn-sm { padding: 8px 14px; font-size: 13px; }

.btn-primary {
  background: var(--amber);
  color: var(--ink);
  font-weight: 600;
  box-shadow: var(--sh-amber);
}
.btn-primary:hover { background: var(--amber-600); transform: translateY(-1px); box-shadow: 0 14px 40px rgba(245,158,11,.24); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--panel-2); }

.btn-dark {
  background: var(--ink);
  color: #fff;
}
.btn-dark:hover { background: #2b2b2f; }

.btn-on-dark {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.22);
}
.btn-on-dark:hover { border-color: #fff; background: rgba(255,255,255,0.06); }

.btn svg { width: 14px; height: 14px; }

/* ── Top Nav ───────────────────────────────────────────────────── */
.dp-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245,243,238,0.82);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--rule);
  height: var(--nav-h);
  display: flex; align-items: center;
}
.dp-nav-inner {
  width: 100%; max-width: var(--page-max-wide);
  margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
}
.dp-nav-logo { display: flex; align-items: center; gap: 10px; }
.dp-nav-logo img { height: 30px; width: auto; }
.dp-nav-links { display: flex; gap: 4px; align-items: center; }
.dp-nav-links a {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 500;
  color: var(--ink-2);
  padding: 8px 14px; border-radius: 5px;
  transition: color .12s, background .12s;
}
.dp-nav-links a:hover { color: var(--ink); background: rgba(11,11,12,0.04); }
.dp-nav-links a.active { color: var(--ink); }
.dp-nav-right { display: flex; align-items: center; gap: 12px; }
.dp-lang-toggle {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--rule-strong);
  border-radius: var(--r-full);
  padding: 3px;
  background: var(--panel-2);
}
.dp-lang-toggle button {
  font-family: var(--font-mono);
  font-size: 10.5px; font-weight: 500; letter-spacing: 0.08em;
  padding: 5px 10px; border-radius: var(--r-full);
  color: var(--ink-3); text-transform: uppercase;
  transition: all .12s;
}
.dp-lang-toggle button.active { background: var(--ink); color: #fff; }

.dp-nav-toggle { display: none; }

/* Mobile menu — hidden by default on ALL viewports, only appears when toggled + on mobile */
.dp-mobile-menu { display: none; }

@media (max-width: 900px) {
  .dp-nav-links, .dp-nav-right .btn, .dp-nav-right .dp-lang-toggle { display: none; }
  .dp-nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 6px; border: 1px solid var(--rule-strong); }
  .dp-nav-inner { padding: 0 20px; }
  .dp-mobile-menu {
    position: fixed; inset: var(--nav-h) 0 0 0;
    background: var(--canvas); z-index: 99;
    padding: 24px; display: none; flex-direction: column; gap: 4px;
    border-top: 1px solid var(--rule);
  }
  .dp-mobile-menu.open { display: flex; }
  .dp-mobile-menu a { padding: 14px 16px; font-family: var(--font-display); font-size: 17px; font-weight: 500; border-radius: 8px; }
  .dp-mobile-menu a:hover { background: rgba(11,11,12,0.04); }
  .dp-mobile-menu .btn { margin-top: 16px; justify-content: center; }
}

/* ── Section wrapper ───────────────────────────────────────────── */
.section {
  padding: clamp(72px, 10vw, 128px) 0;
  position: relative;
}
.section-tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-dark { background: var(--dark); color: rgba(255,255,255,0.9); }
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-panel { background: var(--panel); }

.section-head {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 40px;
  margin-bottom: clamp(40px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 768px) { .section-head { grid-template-columns: 1fr; gap: 12px; } }
.section-head .num {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-3); padding-top: 12px;
}
.section-head h2 { max-width: 22ch; }
.section-head .lead { margin-top: 20px; max-width: 62ch; }

/* ── Footer ────────────────────────────────────────────────────── */
.dp-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.72);
  padding: 80px 0 32px;
}
.dp-footer-inner {
  max-width: var(--page-max-wide); margin: 0 auto; padding: 0 32px;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px;
}
@media (max-width: 768px) { .dp-footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; } }
.dp-footer-brand img { height: 32px; margin-bottom: 20px; }
.dp-footer-brand p { color: rgba(255,255,255,0.55); font-size: 14px; max-width: 32ch; line-height: 1.6; }
.dp-footer-col h5 {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 20px; font-weight: 500;
}
.dp-footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.dp-footer-col a { color: rgba(255,255,255,0.72); font-size: 14px; transition: color .12s; }
.dp-footer-col a:hover { color: var(--amber); }
.dp-footer-bar {
  max-width: var(--page-max-wide); margin: 56px auto 0; padding: 24px 32px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  color: rgba(255,255,255,0.4); font-size: 12.5px; font-family: var(--font-mono); letter-spacing: 0.06em;
}

/* ── Cards ─────────────────────────────────────────────────────── */
.card {
  background: var(--panel-2);
  border: 1px solid var(--rule);
  border-radius: var(--r-4);
  padding: 28px;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.card:hover { border-color: var(--rule-strong); box-shadow: var(--sh-2); }
.card-dark {
  background: var(--dark-2);
  border: 1px solid var(--dark-rule);
  color: rgba(255,255,255,0.88);
}
.card-dark:hover { border-color: rgba(245,158,11,0.3); }

/* ── Chips & Badges ────────────────────────────────────────────── */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: var(--r-full);
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; font-weight: 500;
  background: var(--panel); border: 1px solid var(--rule); color: var(--ink-2);
}
.chip.amber { background: var(--amber-50); border-color: var(--amber-100); color: var(--amber-900); }
.chip.ink { background: var(--ink); color: #fff; border-color: var(--ink); }
.chip-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); }
.chip.amber .chip-dot { background: var(--amber); }

/* ── Utility ───────────────────────────────────────────────────── */
.grid { display: grid; gap: var(--s-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.flex { display: flex; }
.mt-4 { margin-top: 16px; } .mt-6 { margin-top: 24px; } .mt-8 { margin-top: 40px; }
.text-center { text-align: center; }
.hide-mobile { }
@media (max-width: 768px) { .hide-mobile { display: none !important; } }

/* ── Data / metric display ─────────────────────────────────────── */
.metric {
  display: flex; flex-direction: column; gap: 6px;
}
.metric-value {
  font-family: var(--font-display);
  font-weight: 600; font-size: clamp(32px, 4vw, 44px);
  letter-spacing: -0.03em; line-height: 1;
  color: var(--ink);
}
.metric-value.amber { color: var(--amber); }
.metric-label {
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 500;
}

/* Signal indicator (used often — a small live-pulse dot) */
.signal {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-2);
}
.signal-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 0 rgba(245,158,11,0.4);
  animation: signalpulse 2s infinite;
}
@keyframes signalpulse {
  0%   { box-shadow: 0 0 0 0 rgba(245,158,11,0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(245,158,11,0); }
  100% { box-shadow: 0 0 0 0 rgba(245,158,11,0); }
}

/* Hairline divider */
.hr { height: 1px; background: var(--rule); margin: var(--s-9) 0; }
.hr-dark { background: var(--dark-rule); }

/* Radar background pattern (subtle) */
.bg-radar {
  background-image:
    radial-gradient(circle at 20% 30%, rgba(245,158,11,0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(245,158,11,0.04) 0%, transparent 50%);
}

/* Grid backdrop */
.bg-grid {
  background-image:
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}
.bg-grid-dark {
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* Focus */
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 3px; }

/* Selection */
::selection { background: var(--amber); color: var(--ink); }

/* Print / internal banner */
.internal-banner {
  background: var(--ink); color: var(--amber);
  padding: 8px 20px; text-align: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
}