/* =====================================================================
   Path-focused shell: top bar + popovers, floating dock, the path,
   node popovers, sticky unit header, modal, Practice / Profile pages.
   ===================================================================== */
.bubble {
  position: relative;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: 16px;
  padding: 10px 14px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
}
.fb-row-m .bubble::before {
  content: "";
  position: absolute;
  left: -8px;
  bottom: 16px;
  width: 14px;
  height: 14px;
  background: var(--panel);
  transform: rotate(45deg);
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--panel);
  border-bottom: 2px solid var(--line);
}
.tb-in {
  max-width: 640px;
  margin: 0 auto;
  padding: 8px 12px;
  min-height: 60px; /* the logo-only bar in index.html is as tall as the real one, so nothing jumps */
  display: flex;
  align-items: center;
  gap: 6px;
}
.tb-logo {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--teal);
  margin-right: 4px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.tb-logo b {
  color: var(--blue);
  font-weight: 900;
}
.tb-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
}
.tb-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 44px;
  min-width: 44px;
  padding: 0 10px;
  border: 2px solid transparent;
  border-radius: 14px;
  background: transparent;
  font: inherit;
  font-weight: 900;
  font-size: 16px;
  color: var(--text-faint);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
} /* transitions: css/motion.css */
.tb-btn:active {
  transform: scale(0.94);
}
@media (hover: hover) and (pointer: fine) {
  .tb-btn:hover {
    background: var(--bg-2);
  }
}
.tb-btn > svg {
  width: 26px;
  height: 26px;
}
.tb-btn .mascot {
  pointer-events: none;
}
.tb-course {
  color: var(--text-dim);
  font-size: 14px;
  letter-spacing: 0.04em;
}
.tb-course > svg {
  width: 14px;
  height: 14px;
}
.tb-streak {
  color: var(--line-2);
}
.tb-streak.lit {
  color: var(--amber);
}
.tb-streak.lit > svg {
  animation: flicker 0.8s ease-in-out infinite alternate;
  transform-origin: 50% 90%;
}
.tb-xp {
  color: var(--amber-ink);
}
.tb-xp .ring {
  width: 26px;
  height: 26px;
}
.ring-v {
  transition: stroke-dashoffset 700ms var(--ease-out);
}
.tb-quest {
  position: relative;
}
.tb-quest .tb-dot {
  position: absolute;
  top: 7px;
  right: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--rose);
  border: 2px solid var(--panel);
  transform: scale(0);
  transition: transform var(--dur-4) var(--ease-spring);
}
.tb-quest.ready .tb-dot {
  transform: scale(1);
}
.tb-quest.ready > svg {
  animation: chestJiggle 2.4s ease-in-out infinite;
}
@keyframes chestJiggle {
  0%,
  80%,
  100% {
    transform: rotate(0);
  }
  84% {
    transform: rotate(-12deg);
  }
  88% {
    transform: rotate(10deg);
  }
  92% {
    transform: rotate(-6deg);
  }
}
@keyframes flicker {
  from {
    transform: scale(1) rotate(-3deg);
  }
  to {
    transform: scale(1.12, 1.05) rotate(3deg);
  }
} /* also the toast icon (css/ux/) */

/* popovers */
.tb-pop {
  position: fixed;
  inset: 0;
  z-index: 45;
  pointer-events: none;
}
/* the dim layer behind a popover: phones only (js/app/topbar.js sets its top edge to the bottom of the bar) */
.tb-scrim {
  display: none;
}
@media (max-width: 640px) {
  .tb-scrim {
    display: block;
    position: fixed;
    inset: 62px 0 0;
    z-index: 44;
    background: var(--scrim);
    opacity: 0;
    visibility: hidden;
    pointer-events: none; /* while it fades out, taps already reach the page */
    transition:
      opacity var(--dur-2) ease,
      visibility 0s linear var(--dur-2);
  }
  .tb-scrim.on {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }
}
.pop-card {
  position: fixed;
  pointer-events: auto;
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 4px 0 var(--line);
  padding: 14px;
  transform-origin: var(--ax, 50%) 0;
  max-height: calc(100vh - 90px);
  max-height: calc(100dvh - 90px);
  overflow-y: auto;
}
.pop-card::before {
  content: "";
  position: absolute;
  top: -9px;
  left: calc(var(--ax, 50%) - 8px);
  width: 14px;
  height: 14px;
  background: var(--panel);
  border-left: 2px solid var(--line);
  border-top: 2px solid var(--line);
  transform: rotate(45deg);
}
.pop-card h3 {
  margin: 2px 4px 10px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.pop-card h4 {
  margin: 12px 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.pop-hero {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}
.pop-hero > div {
  display: flex;
  flex-direction: column;
}
.pop-hero .big-n {
  font-size: 34px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1;
}
.pop-hero .big-n small {
  font-size: 16px;
  color: var(--text-faint);
}
.pop-hero .ring {
  width: 88px;
  height: 88px;
  flex-shrink: 0;
}

/* phones: the logo, the course mascot and four buttons all have to fit (they come after the base rules so they win) */
@media (max-width: 480px) {
  .tb-in {
    padding-left: 8px;
    padding-right: 6px;
    gap: 0;
  }
  .tb-logo {
    font-size: 20px;
    margin-right: 0;
  }
  .tb-course > span:not(.mascot) {
    display: none;
  }
  .tb-btn {
    padding: 0 6px;
    gap: 4px;
  }
}
@media (max-width: 400px) {
  .tb-btn {
    padding: 0 4px;
  }
  .tb-logo {
    font-size: 18px;
  }
}
@media (max-width: 340px) {
  .tb-btn {
    padding: 0 2px;
  }
  .tb-logo {
    display: none;
  }
}