/* Zerker Web Theme v1
   Canonical brand, typography, color, geometry, motion, and layout tokens.
   Product/page styles consume these tokens rather than redefining the theme. */

@font-face {
  font-family: 'Geist';
  src: url('/assets/fonts/geist-variable.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('/assets/fonts/geist-mono-variable.woff2') format('woff2');
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  /* Brand color */
  --zk-bg: #f8f8f6;
  --zk-surface: #ffffff;
  --zk-ink: #0a0a0a;
  --zk-ink-raised: #161616;
  --zk-ink-soft: #1c1c1c;
  --zk-text: #101010;
  --zk-text-secondary: #5f6561;
  --zk-text-secondary-dark: #9aa09b;
  --zk-hairline: #e4e4e0;
  --zk-hairline-strong: #d9d9d4;
  --zk-accent: #6656fb;
  --zk-accent-soft: rgba(102, 86, 251, 0.09);
  --zk-success: #16866a;
  --zk-warning: #a86f00;
  --zk-danger: #c33e4b;

  /* Typography */
  --zk-font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Segoe UI', sans-serif;
  --zk-font-mono: 'Geist Mono', 'SF Mono', ui-monospace, Menlo, monospace;

  /* Geometry */
  --zk-radius-control: 10px;
  --zk-radius-control-lg: 12px;
  --zk-radius-nav: 16px;
  --zk-radius-card: 24px;
  --zk-content: 1080px;
  --zk-reading: 780px;
  --zk-gutter: 28px;
  --zk-gutter-mobile: 18px;

  /* Elevation and motion */
  --zk-shadow-nav: 0 12px 32px rgba(22, 22, 22, 0.08), 0 1px 2px rgba(22, 22, 22, 0.05);
  --zk-shadow-card: 0 16px 40px rgba(22, 22, 22, 0.08), 0 1px 2px rgba(22, 22, 22, 0.05);
  --zk-ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --zk-duration-fast: 180ms;
  --zk-duration-base: 250ms;
  --zk-duration-reveal: 720ms;
}

/* Reusable brand lockup. The mark is a mask so it inherits currentColor. */
.zk-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--zk-ink);
  font-family: var(--zk-font-sans);
  font-size: 14px;
  font-weight: 760;
  letter-spacing: 0.16em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
}
.zk-mark {
  display: inline-block;
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  background: currentColor;
  -webkit-mask: url('/assets/brand/zerker-mark.svg?v=3') center / contain no-repeat;
  mask: url('/assets/brand/zerker-mark.svg?v=3') center / contain no-repeat;
}
.zk-brand--light { color: #fff; }

/* Zerker product switcher. Portfolio companies belong on zerkerlabs.com. */
.zk-product-family {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex: 0 1 auto;
  min-width: 0;
}
.zk-product-family > .brand,
.zk-product-family > .mark { flex: 0 1 auto; min-width: 0; }
.zk-product-family-ready .zk-product-family .mark__suffix { display: none; }
.zk-product-divider {
  width: 1px;
  height: 20px;
  margin: 0 9px 0 11px;
  flex: 0 0 auto;
  background: var(--zk-hairline-strong);
}
.zk-product-trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 0 7px;
  border: 0;
  border-radius: 8px;
  color: var(--zk-text-secondary);
  background: transparent;
  font-family: var(--zk-font-mono);
  font-size: 9px;
  font-weight: 590;
  letter-spacing: 0.14em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--zk-duration-fast), background var(--zk-duration-fast);
}
.zk-product-trigger:hover,
.zk-product-trigger:focus-visible,
.zk-product-family[data-open='true'] .zk-product-trigger {
  color: var(--zk-ink);
  background: rgba(10, 10, 10, 0.055);
}
.zk-product-trigger svg {
  width: 10px;
  height: 6px;
  overflow: visible;
  transition: transform var(--zk-duration-base) var(--zk-ease-expo);
}
.zk-product-trigger path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.zk-product-family[data-open='true'] .zk-product-trigger svg { transform: rotate(180deg); }
.zk-product-panel {
  position: absolute;
  top: calc(100% + 17px);
  left: -15px;
  z-index: 1002;
  width: min(430px, calc(100vw - 36px));
  padding: 12px;
  border: 1px solid rgba(10, 10, 10, 0.09);
  border-radius: 20px;
  color: var(--zk-text);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 28px 70px rgba(22, 22, 22, 0.18), 0 2px 8px rgba(22, 22, 22, 0.06);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-7px) scale(0.975);
  transform-origin: 82px 0;
  transition: opacity var(--zk-duration-fast) ease, visibility var(--zk-duration-fast), transform var(--zk-duration-base) var(--zk-ease-expo);
}
.zk-product-family[data-open='true'] .zk-product-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}
.zk-product-panel__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 32px;
  padding: 0 4px 7px 8px;
}
.zk-product-panel__top p {
  margin: 0;
  color: var(--zk-text-secondary);
  font-family: var(--zk-font-mono);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}
.zk-product-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 999px;
  color: var(--zk-text-secondary);
  background: transparent;
  cursor: pointer;
}
.zk-product-close:hover,
.zk-product-close:focus-visible { color: var(--zk-ink); background: rgba(10, 10, 10, 0.055); }
.zk-product-close svg { width: 12px; height: 12px; }
.zk-product-close path { fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; }
.zk-product-list { display: grid; gap: 3px; }
.zk-product-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  min-height: 68px;
  padding: 8px 11px 8px 9px;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--zk-text);
  text-decoration: none;
  transition: border-color var(--zk-duration-fast), background var(--zk-duration-fast), transform var(--zk-duration-fast) var(--zk-ease-expo);
}
.zk-product-row:hover,
.zk-product-row:focus-visible {
  border-color: rgba(10, 10, 10, 0.07);
  background: #f6f6f3;
  transform: translateX(2px);
}
.zk-product-row.is-current { background: var(--zk-accent-soft); }
.zk-product-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--zk-hairline);
  border-radius: 12px;
  color: var(--zk-ink);
  background: var(--zk-surface);
  font-family: var(--zk-font-mono);
  font-size: 14px;
  font-weight: 650;
}
.zk-product-icon--gateway::before {
  content: '';
  width: 21px;
  height: 21px;
  background: currentColor;
  -webkit-mask: url('/assets/brand/zerker-mark.svg?v=3') center / contain no-repeat;
  mask: url('/assets/brand/zerker-mark.svg?v=3') center / contain no-repeat;
}
.zk-product-icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.zk-product-icon--console { color: var(--zk-accent); }
.zk-product-icon--portals { color: var(--zk-success); }
.zk-product-icon--rooms { color: #8a6b2f; }
.zk-product-copy { min-width: 0; }
.zk-product-copy strong,
.zk-product-copy small { display: block; }
.zk-product-copy strong {
  margin-bottom: 4px;
  color: var(--zk-ink);
  font-family: var(--zk-font-sans);
  font-size: 14px;
  font-weight: 680;
  letter-spacing: -0.015em;
}
.zk-product-copy small {
  overflow: hidden;
  color: var(--zk-text-secondary);
  font-family: var(--zk-font-sans);
  font-size: 12px;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.zk-product-backdrop { display: none; }

@media (max-width: 720px) {
  :root { --zk-gutter: var(--zk-gutter-mobile); }
  .zk-product-divider { margin-right: 5px; margin-left: 8px; }
  .zk-product-trigger { min-height: 44px; padding-right: 5px; padding-left: 5px; }
  .zk-product-close { width: 46px; height: 46px; }
  .zk-product-panel {
    position: fixed;
    top: auto;
    right: 10px;
    bottom: max(10px, env(safe-area-inset-bottom));
    left: 10px;
    z-index: 1102;
    width: auto;
    max-height: calc(100dvh - 20px);
    overflow-y: auto;
    overscroll-behavior: contain;
    border-radius: 22px;
    opacity: 0;
    transform: translateY(22px) scale(0.985);
    transform-origin: 50% 100%;
  }
  .zk-product-family[data-open='true'] .zk-product-panel { transform: translateY(0) scale(1); }
  .zk-product-backdrop {
    position: fixed;
    inset: 0;
    z-index: 49;
    display: block;
    border: 0;
    background: rgba(10, 10, 10, 0.22);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    transition: opacity var(--zk-duration-base), visibility var(--zk-duration-base);
  }
  .zk-switcher-open .zk-product-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  .zk-switcher-open { overflow: hidden; }
}

@media (max-width: 430px) {
  .zk-product-divider { height: 18px; margin-left: 6px; }
  .masthead__inner { gap: 0.5rem; }
  .zk-product-trigger { width: 44px; min-width: 44px; flex: 0 0 44px; gap: 0; margin-right: -16px; padding: 0; color: var(--zk-ink); background: rgba(10, 10, 10, 0.055); }
  .zk-product-trigger span { display: none; }
  .zk-product-row { grid-template-columns: 40px minmax(0, 1fr); min-height: 64px; gap: 9px; }
  .zk-product-icon { width: 40px; height: 40px; }
  .zk-product-copy small { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --zk-duration-fast: 0ms;
    --zk-duration-base: 0ms;
    --zk-duration-reveal: 0ms;
  }
}