/* header, nav, footer, buttons, chips */

/* === header === */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--color-border);
}
.app-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
  min-width: 0;
}
.brand__logo {
  height: 30px;
  width: auto;
  display: block;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.4));
}
@media (min-width: 768px) { .brand__logo { height: 36px; } }
@media (min-width: 1100px) { .brand__logo { height: 40px; } }

/* legacy badge mark (kept for places where the wordmark won't fit) */
.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-imola);
  color: #000;
  font-weight: var(--fw-black);
  letter-spacing: 0;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  font-style: italic;
}
.brand__name { display: none; }
@media (min-width: 480px) { .brand__name { display: inline; } }

/* === primary nav (desktop) === */
.nav {
  display: none;
  gap: var(--space-6);
  align-items: center;
}
.nav__link {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--dur) var(--ease-out);
  padding-block: var(--space-2);
  position: relative;
}
.nav__link:hover,
.nav__link.is-active {
  color: var(--color-text);
}
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--color-imola);
}
@media (min-width: 900px) { .nav { display: flex; } }

/* === mobile bottom nav (PWA app feel) === */
.mobile-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-nav-h);
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 50;
}
.mobile-nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--dur) var(--ease-out);
}
.mobile-nav__link.is-active { color: var(--color-imola); }
.mobile-nav__icon {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
}
@media (min-width: 900px) { .mobile-nav { display: none; } }

/* allow content to scroll past the bottom nav on mobile */
@media (max-width: 899px) {
  body { padding-bottom: calc(var(--mobile-nav-h) + env(safe-area-inset-bottom)); }
}

/* === header actions (right side) === */
.header-actions { display: flex; align-items: center; gap: var(--space-2); }

/* === buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-imola);
  color: #000;
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease-out), background var(--dur), box-shadow var(--dur);
  white-space: nowrap;
}
.btn:hover {
  background: var(--color-imola-glow);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-imola);
}
.btn:active { transform: translateY(0); }
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}
.btn--ghost:hover {
  background: var(--color-surface);
  border-color: var(--color-imola);
  color: var(--color-imola);
  box-shadow: none;
}
.btn--sm { padding: var(--space-2) var(--space-3); font-size: var(--fs-xs); }
.btn--block { width: 100%; }

/* === chips === */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  color: var(--color-text-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  text-transform: uppercase;
}
.chip--imola { color: var(--color-imola); border-color: rgba(238,85,0,0.4); background: var(--color-imola-soft); }
.chip--na1   { color: var(--color-na1); border-color: rgba(238,85,0,0.4); }
.chip--na2   { color: var(--color-na2); border-color: rgba(200,16,46,0.4); }
.chip--live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-imola);
  box-shadow: 0 0 0 3px rgba(238,85,0,0.25);
  animation: pulse 1.8s var(--ease-in-out) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* === footer === */
.app-footer {
  margin-top: var(--space-24);
  padding-block: var(--space-16);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
}
.app-footer h6 {
  margin-bottom: var(--space-4);
  color: var(--color-text);
}
.app-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}
@media (min-width: 768px) {
  .app-footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}
.app-footer__links a {
  display: block;
  padding-block: var(--space-1);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}
.app-footer__links a:hover { color: var(--color-imola); }
.app-footer__legal {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-dim);
}

/* === install prompt (PWA) === */
.install-banner {
  position: fixed;
  bottom: calc(var(--mobile-nav-h) + var(--space-4) + env(safe-area-inset-bottom));
  left: var(--space-4);
  right: var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-imola);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 60;
  animation: slide-up var(--dur-slow) var(--ease-out);
}
.install-banner.is-visible { display: flex; align-items: center; gap: var(--space-4); }
@keyframes slide-up { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@media (min-width: 900px) {
  .install-banner {
    left: auto;
    bottom: var(--space-6);
    right: var(--space-6);
    max-width: 380px;
  }
}