/* =========================================================
   Metrica — layout chrome
   .topbar · .nav-panel · .mobile-burger · .mobile-drawer
   .footer · .tweaks-panel

   These become WP template-parts (header.html, footer.html)
   in the future Gutenberg block theme.
   ========================================================= */

/* =====================================================
   TOPBAR
   ===================================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--ink-100);
}
.topbar-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 14px 48px;
  display: flex;
  align-items: center;
  gap: 48px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.brand img { height: 38px; width: auto; display: block; }

/* ---------- Primary nav ---------- */
nav.primary {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-500);
}
nav.primary > a,
nav.primary .nav-item > .nav-trigger {
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease, color .15s ease;
  background: none;
  border-width: 0 0 1px 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
nav.primary > a:hover,
nav.primary .nav-item:hover > .nav-trigger,
nav.primary .nav-item[data-open="true"] > .nav-trigger {
  color: var(--ink-900);
  border-color: var(--ink-900);
}
nav.primary .nav-trigger .chev {
  width: 9px;
  height: 9px;
  display: inline-block;
  transition: transform .15s ease;
}
nav.primary .nav-item[data-open="true"] .nav-trigger .chev {
  transform: rotate(180deg);
}

/* ---------- Dropdown panels ---------- */
.nav-item { position: relative; }
.nav-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: -24px;
  min-width: 640px;
  background: #fff;
  border: 1px solid var(--ink-100);
  box-shadow:
    0 24px 64px -24px rgba(10, 35, 66, .18),
    0 2px 6px rgba(10, 35, 66, .04);
  padding: 28px 32px 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity .14s ease, transform .14s ease, visibility .14s;
  z-index: 60;
}
.nav-item:hover .nav-panel,
.nav-item[data-open="true"] .nav-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
/* hover bridge so panel stays open while moving cursor */
.nav-item::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 14px;
}

.nav-panel-grid { display: grid; gap: 28px 40px; }
.nav-panel-grid.cols-2 { grid-template-columns: 1fr 1fr; }

.nav-panel-col-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-400);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-100);
}

.nav-panel-link {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 8px 0;
  color: var(--ink-900);
  border-radius: 2px;
}
.nav-panel-link + .nav-panel-link { border-top: 1px solid var(--ink-100); }
.nav-panel-link:hover { color: var(--ink-900); }
.nav-panel-link:hover .nav-panel-title {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.nav-panel-link .nav-panel-mark {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-400);
  padding-top: 3px;
  letter-spacing: .08em;
}
.nav-panel-title {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-900);
  line-height: 1.3;
  margin: 0 0 2px;
}
.nav-panel-desc {
  display: block;
  font-size: 12.5px;
  color: var(--ink-500);
  line-height: 1.45;
  margin: 0;
}
.nav-panel-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--ink-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.nav-panel-foot a {
  color: var(--ink-900);
  border-bottom: 1px solid var(--ink-900);
  padding-bottom: 2px;
}

.topbar-cta {
  margin-left: auto;
  display: flex;
  gap: 12px;
  align-items: center;
}

/* =====================================================
   MOBILE BURGER + DRAWER
   ===================================================== */
.mobile-burger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 1px solid var(--ink-100);
  border-radius: 6px;
  color: var(--ink-900);
  cursor: pointer;
  position: relative;
  z-index: 60;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.mobile-burger svg { display: block; pointer-events: none; }
.mobile-burger * { pointer-events: none; }
.mobile-burger:active { background: var(--ink-50); }

.mobile-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(5, 10, 20, .55);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.mobile-drawer.open {
  display: block;
  opacity: 1;
  pointer-events: auto;
}
.mobile-drawer-panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(86vw, 380px);
  background: #ffffff;
  padding: 20px 24px calc(32px + env(safe-area-inset-bottom)) 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateX(100%);
  transition: transform .28s cubic-bezier(.2, .7, .2, 1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-drawer.open .mobile-drawer-panel { transform: translateX(0); }

.mobile-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink-100);
  margin-bottom: 12px;
}
.mobile-drawer-head img { height: 30px; }
.mobile-drawer-close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--ink-900);
  cursor: pointer;
  margin-right: -12px;
}

.mobile-nav-group { border-bottom: 1px solid var(--ink-100); }
.mobile-nav-group:last-of-type { border-bottom: none; }

.mobile-nav-link,
.mobile-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 52px;
  padding: 14px 0;
  font: inherit;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 500;
  color: var(--ink-900);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  letter-spacing: -.005em;
}
.mobile-nav-toggle .chev {
  width: 14px;
  height: 14px;
  transition: transform .2s ease;
}
.mobile-nav-group[data-open="true"] .mobile-nav-toggle .chev {
  transform: rotate(180deg);
}
.mobile-nav-sub {
  display: none;
  padding: 0 0 16px 0;
}
.mobile-nav-group[data-open="true"] .mobile-nav-sub { display: block; }
.mobile-nav-sub a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink-500);
  line-height: 1.4;
}
.mobile-nav-sub a strong {
  display: block;
  font-weight: 600;
  color: var(--ink-900);
  font-size: 15px;
  margin-bottom: 2px;
}

.mobile-drawer-cta {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mobile-drawer-cta .btn {
  width: 100%;
  justify-content: center;
  min-height: 48px;
  padding: 14px 20px;
  font-size: 15px;
  border-radius: 6px;
}

/* Body lock when drawer open */
body.drawer-open {
  overflow: hidden;
  touch-action: none;
}

/* =====================================================
   FOOTER
   ===================================================== */
footer.footer {
  background: var(--ink-950);
  color: var(--ink-100);
  padding: 96px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--ink-700);
}
.footer h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-400);
  font-weight: 500;
  margin: 0 0 20px;
}
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 12px; font-size: 14px; }
.footer li a {
  color: var(--ink-100);
  transition: color .15s ease;
}
.footer li a:hover { color: var(--cyan-400); }

.footer-brand .b {
  margin-bottom: 20px;
  display: block;
}
.footer-brand .b img { height: 30px; width: auto; display: block; }
.footer-brand p {
  font-size: 14px;
  color: var(--ink-300);
  line-height: 1.6;
  max-width: 360px;
}

/* Partnerships strip */
.footer-partners {
  padding: 20px 0;
  border-bottom: 1px solid var(--ink-700);
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-partners .t {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-300);
  flex-shrink: 0;
}
.footer-partners .badges {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
/* Fixed uniform badge size — both Salesforce and SAP fit the same box.
   Images inside use object-fit: contain so they centre without distortion. */
.footer-partners .badges a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 240px;
  height: 72px;
  padding: 8px 12px;
  border-radius: 3px;
  transition: opacity .15s ease, background .15s ease;
  opacity: .85;
}
.footer-partners .badges a:hover { opacity: 1; }
.footer-partners .badges img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}
.footer-partners .badges .sap-wrap {
  background: #fff;
}

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: .08em;
}

/* Footer socials */
.footer-socials {
  display: inline-flex;
  gap: 8px;
  margin: 0 28px 0 0;
  vertical-align: middle;
}
.footer-socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink-700);
  color: var(--ink-300);
  border-radius: 2px;
  transition: color .15s, border-color .15s, background .15s;
}
.footer-socials a:hover {
  color: var(--ink-0);
  border-color: var(--ink-0);
  background: rgba(255, 255, 255, .04);
}
.footer-socials svg { width: 15px; height: 15px; display: block; }

/* =====================================================
   TWEAKS PANEL (theme toggle: tone + accent)
   ===================================================== */
.tweaks-panel {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  background: var(--ink-0);
  border: 1px solid var(--ink-200);
  box-shadow: var(--shadow-lg);
  padding: 16px;
  width: 240px;
  font-size: 13px;
  display: none;
}
.tweaks-panel.open { display: block; }
.tweaks-panel h5 {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.tweaks-panel .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.tweaks-panel button {
  background: transparent;
  border: 1px solid var(--ink-200);
  padding: 4px 10px;
  font-size: 12px;
  color: var(--ink-900);
}
.tweaks-panel button.active {
  background: var(--ink-900);
  color: var(--ink-0);
  border-color: var(--ink-900);
}

/* =====================================================
   Layout responsive overrides (<=900px)
   ===================================================== */
@media (max-width: 900px) {
  /* Topbar */
  .topbar-inner {
    padding: 12px 20px;
    gap: 0;
    justify-content: space-between;
  }
  .topbar .brand img { height: 34px; }
  .topbar .primary,
  .topbar .topbar-cta { display: none; }
  .mobile-burger { display: inline-flex; }
  .mobile-drawer { display: block; }
  .mobile-drawer:not(.open) { opacity: 0; pointer-events: none; }

  /* Footer */
  .footer { padding: 48px 0 32px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 20px;
    padding: 0 20px 32px;
  }
  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: 8px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 20px 0;
    font-size: 12px;
  }
  .footer-socials { order: -1; }
  .footer-partners {
    flex-wrap: wrap;
    gap: 14px;
  }
}

@media (min-width: 768px) and (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  .footer-brand { grid-column: auto; }
}

@media (max-width: 390px) {
  .footer-grid { grid-template-columns: 1fr; }
}