/* BinPar brand tokens — source: binpar-brand-design-system skill */
:root {
  --ui-color-bg: #09080c;
  --ui-color-bg-dark: #111016;
  --ui-color-yellow: #fcb810;
  --ui-color-teal: #67d7c3;
  --ui-color-red: #ff6e8e;
  --ui-color-border: rgba(245, 241, 248, 0.1);
  --ui-color-border-soft: rgba(245, 241, 248, 0.06);
  --ui-color-border-strong: rgba(252, 184, 16, 0.32);
  --ui-color-text-primary: #f5f1f8;
  --ui-color-text-secondary: #c8c1d0;
  --ui-color-text-muted: #8f859b;
  --ui-shadow-panel: 0 32px 72px -44px rgba(0, 0, 0, 0.88),
    0 14px 32px -24px rgba(0, 0, 0, 0.66);
  --ui-font-display: "Poppins", "Segoe UI", sans-serif;
  --ui-font-body: "Roboto", "Segoe UI", sans-serif;
  --ui-font-code: "Fira Code", monospace;

  --background-dot-spacing: 14px;
  --background-dot-size: 0.8px;
  --background-dot-color: rgba(245, 241, 248, 0.15);
  --background-dot-active-color: rgba(245, 241, 248, 0.42);
  --background-pointer-x: 50vw;
  --background-pointer-y: 35vh;
  --background-pointer-opacity: 0;
  --background-halo-size: 180px;
  --background-glow-size: 250px;
}

@media (max-width: 1023px) {
  :root {
    --background-dot-spacing: 13px;
    --background-dot-color: rgba(245, 241, 248, 0.085);
  }
}

* { box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--ui-color-bg);
  background-image: linear-gradient(180deg, rgba(31, 19, 41, 0.9) 0%, #09080c 100%);
  background-attachment: fixed;
  color: var(--ui-color-text-primary);
  font-family: var(--ui-font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(252, 184, 16, 0.2); }

:focus-visible {
  outline: 2px solid var(--ui-color-yellow);
  outline-offset: 2px;
}

* { scrollbar-color: var(--ui-color-yellow) var(--ui-color-bg-dark); }

/* Interactive dotted background */
.interactive-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  transform: translateZ(0);
}

.interactive-background > div {
  position: absolute;
  inset: -1px;
}

.interactive-background__dots {
  inset: calc(var(--background-dot-spacing) * 0.5);
  background-image: radial-gradient(
    circle,
    var(--background-dot-color) 0 var(--background-dot-size),
    transparent calc(var(--background-dot-size) + 0.45px)
  );
  background-position: 0 0;
  background-size: var(--background-dot-spacing) var(--background-dot-spacing);
  opacity: 0.64;
}

.interactive-background__glow {
  background: radial-gradient(
    circle var(--background-glow-size) at var(--background-pointer-x) var(--background-pointer-y),
    rgba(248, 242, 255, 0.045),
    rgba(252, 184, 16, 0.018) 26%,
    transparent 72%
  );
  opacity: calc(var(--background-pointer-opacity) * 0.4);
  transition: opacity 180ms ease-out;
}

.interactive-background__dots--active {
  inset: calc(var(--background-dot-spacing) * 0.5);
  background-image: radial-gradient(
    circle,
    var(--background-dot-active-color) 0 calc(var(--background-dot-size) + 0.02px),
    transparent calc(var(--background-dot-size) + 0.55px)
  );
  opacity: calc(var(--background-pointer-opacity) * 0.62);
  transition: opacity 180ms ease-out;
  -webkit-mask-image: radial-gradient(
    circle var(--background-halo-size) at var(--background-pointer-x) var(--background-pointer-y),
    rgba(0, 0, 0, 0.84),
    transparent 76%
  );
  mask-image: radial-gradient(
    circle var(--background-halo-size) at var(--background-pointer-x) var(--background-pointer-y),
    rgba(0, 0, 0, 0.84),
    transparent 76%
  );
}

.interactive-background[data-cursor-state="idle"] .interactive-background__glow,
.interactive-background[data-cursor-state="idle"] .interactive-background__dots--active {
  transition-duration: 1.5s;
  transition-timing-function: ease-out;
}

.interactive-background[data-mode="static"] .interactive-background__glow,
.interactive-background[data-mode="static"] .interactive-background__dots--active {
  opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
  .interactive-background__glow,
  .interactive-background__dots--active {
    opacity: 0;
    transition: none;
  }
}

/* Layout: sticky sidebar + content */
.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 2.5rem 1.75rem;
  border-right: 1px solid var(--ui-color-border-soft);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  backdrop-filter: blur(10px);
  overflow-y: auto;
}

.logo { margin-bottom: 2.75rem; }
.logo a { display: inline-block; transition: opacity 180ms ease; }
.logo a:hover { opacity: 0.7; }
.logo-img { display: block; height: 32px; width: auto; }

.nav-label {
  font-family: var(--ui-font-display);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ui-color-text-muted);
  margin-bottom: 0.9rem;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.nav-item a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 12px;
  text-decoration: none;
  color: var(--ui-color-text-secondary);
  font-size: 0.84rem;
  border-radius: 10px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-item a:hover {
  background: rgba(245, 241, 248, 0.05);
  color: var(--ui-color-yellow);
}

.nav-item a.active {
  background: rgba(252, 184, 16, 0.1);
  color: var(--ui-color-yellow);
  font-weight: 500;
}

.nav-num {
  font-family: var(--ui-font-code);
  font-size: 0.68rem;
  color: var(--ui-color-text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 20px;
}

.nav-item a.active .nav-num { color: var(--ui-color-yellow); }

.sidebar-foot {
  margin-top: auto;
  padding-top: 1.75rem;
  font-size: 0.7rem;
  color: var(--ui-color-text-muted);
  line-height: 1.5;
}

.sidebar-foot strong {
  font-family: var(--ui-font-display);
  font-weight: 500;
  color: var(--ui-color-text-secondary);
}

main {
  min-width: 0;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2.5rem;
}

section { scroll-margin-top: 1.5rem; }

/* Hero */
.hero { padding: 5rem 0 4rem; }

.eyebrow {
  font-family: var(--ui-font-display);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ui-color-text-muted);
  margin: 0 0 0.75rem;
}

.eyebrow--landing {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ui-color-yellow);
}

h1 {
  font-family: var(--ui-font-display);
  font-weight: 600;
  font-size: clamp(2.55rem, 6vw, 4.65rem);
  line-height: 1.02;
  text-wrap: balance;
  letter-spacing: 0;
  margin: 0 0 1.5rem;
}

.hl { color: var(--ui-color-yellow); }

h2 {
  font-family: var(--ui-font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  line-height: 1.25;
  text-wrap: balance;
  margin: 0 0 1rem;
}

.lead, .copy {
  font-size: 0.95rem;
  line-height: 1.75rem;
  color: var(--ui-color-text-secondary);
  max-width: 42rem;
  margin: 0 0 2rem;
}

.copy code {
  font-family: var(--ui-font-code);
  font-size: 0.85em;
  color: var(--ui-color-yellow);
}

.copy--center { margin: 0 auto; text-align: center; }

.cta-row { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }

.cta {
  display: inline-block;
  font-family: var(--ui-font-display);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #111016;
  background: var(--ui-color-yellow);
  border-radius: 9999px;
  padding: 0.85rem 1.75rem;
  text-decoration: none;
  box-shadow: 0 12px 30px -12px rgba(252, 184, 16, 0.45);
  transition: transform 200ms ease;
}

.cta:hover { transform: scale(1.02); }

.cta-ghost {
  font-family: var(--ui-font-display);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ui-color-text-secondary);
  text-decoration: none;
  border: 1px solid var(--ui-color-border);
  border-radius: 9999px;
  padding: 0.85rem 1.75rem;
  transition: color 180ms ease, border-color 180ms ease;
}

.cta-ghost:hover {
  color: var(--ui-color-yellow);
  border-color: var(--ui-color-border-strong);
}

/* Section bands (panels) */
.band {
  border-radius: 34px;
  border: 1px solid var(--ui-color-border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  backdrop-filter: blur(10px);
  box-shadow: var(--ui-shadow-panel);
  padding: 2.5rem;
  margin-bottom: 2rem;
}

.band--center { text-align: center; }

.symbol { margin-bottom: 1.25rem; }

/* Color swatches */
.swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 1rem;
}

.swatch {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border: 1px solid var(--ui-color-border-soft);
  border-radius: 18px;
  padding: 1rem;
}

.chip { height: 56px; border-radius: 12px; }
.chip--border { border: 1px solid var(--ui-color-border); }

.swatch strong {
  font-family: var(--ui-font-display);
  font-size: 0.78rem;
  font-weight: 500;
  margin-top: 0.4rem;
}

.swatch code {
  font-family: var(--ui-font-code);
  font-size: 0.7rem;
  color: var(--ui-color-text-muted);
}

/* Typography samples */
.type-grid { display: grid; gap: 1rem; }

.type-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border: 1px solid var(--ui-color-border-soft);
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
}

.type-label {
  font-family: var(--ui-font-display);
  font-size: 0.64rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.17em;
  color: var(--ui-color-text-muted);
}

.type-display {
  font-family: var(--ui-font-display);
  font-weight: 600;
  font-size: 2rem;
  line-height: 1.1;
}

.type-body {
  font-size: 0.95rem;
  line-height: 1.5rem;
  color: var(--ui-color-text-secondary);
}

.type-code {
  font-family: var(--ui-font-code);
  font-size: 0.85rem;
  color: var(--ui-color-teal);
}

/* Metric cards */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  border: 1px solid var(--ui-color-border-soft);
  border-radius: 18px;
  padding: 1.5rem;
}

.metric-label {
  font-family: var(--ui-font-display);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--ui-color-text-muted);
}

.metric-value {
  font-family: var(--ui-font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.9rem);
  letter-spacing: -0.06em;
  line-height: 1;
}

.metric-value--yellow { color: var(--ui-color-yellow); }

.metric-state {
  font-size: 0.78rem;
  color: var(--ui-color-text-muted);
}

.metric-state--good { color: var(--ui-color-teal); }

/* Footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--ui-color-border-soft);
  font-size: 0.78rem;
  color: var(--ui-color-text-muted);
}

/* Mobile: sidebar collapses to a top bar */
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }

  .sidebar {
    position: relative;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 16px;
    padding: 1rem 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--ui-color-border-soft);
    overflow-y: visible;
  }

  .logo { margin-bottom: 0; margin-right: auto; }
  .logo-img { height: 26px; }
  .nav-label, .sidebar-foot { display: none; }
  .nav-list { flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .nav-item a { padding: 6px 10px; font-size: 0.72rem; }
  .nav-item .nav-txt { display: none; }

  main { padding: 0 1.5rem; }
  .hero { padding: 3.5rem 0 3rem; }
  .band { padding: 1.75rem; }
}