/* ============================================================
   Overlay UI: trailhead header, story panel + choices,
   passport modal, intro screen.
   ============================================================ */

/* ---------- Trailhead header ---------- */

.trailhead {
  position: fixed;
  top: 14px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 20;
  pointer-events: none;
}
.trailhead > * { pointer-events: auto; }

.trailhead-sign {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper) var(--grain);
  border: 2px solid var(--paper-edge);
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(20, 28, 18, 0.4);
  padding: 7px 16px 8px 12px;
  transform: rotate(-1.2deg);
}

.trailhead-drop { font-size: 20px; }

.trailhead-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  color: var(--pine-deep);
  letter-spacing: 0.01em;
}

.passport-button {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper) var(--grain);
  border: 2px solid var(--paper-edge);
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(20, 28, 18, 0.4);
  padding: 7px 14px;
  transform: rotate(1.2deg);
  transition: transform 0.15s ease;
}
.passport-button:hover { transform: rotate(1.2deg) scale(1.05); }

.passport-icon { font-size: 18px; }

.passport-count {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--clay);
}

.passport-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--pine-deep);
}

/* Little wiggle when a new stamp lands */
.passport-button.stamped { animation: stamp-wiggle 0.6s ease; }
@keyframes stamp-wiggle {
  0%, 100% { transform: rotate(1.2deg) scale(1); }
  30% { transform: rotate(-3deg) scale(1.15); }
  60% { transform: rotate(4deg) scale(1.08); }
}

/* ---------- Story panel ---------- */

.story-panel {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 15;
  display: flex;
  justify-content: flex-start;
  padding: 0 16px 18px;
  pointer-events: none;
}

.story-card {
  pointer-events: auto;
  width: min(clamp(400px, 32vw, 600px), 100%);
  max-height: 44vh;
  overflow-y: auto;
  background: var(--paper) var(--grain);
  border: 2px solid var(--paper-edge);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 16px 22px 18px;
}

.story-heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.scene-emoji { font-size: 30px; }

.scene-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 2vw, 36px);
  color: var(--pine-deep);
  margin: 0;
  flex: 1;
}

.read-aloud {
  font-size: 20px;
  background: var(--sky);
  border: 2px solid var(--river);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: transform 0.15s ease;
}
.read-aloud:hover { transform: scale(1.12); }
.read-aloud.speaking { animation: speaking-bob 0.8s ease-in-out infinite; background: var(--sun); border-color: var(--clay); }
@keyframes speaking-bob {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

.scene-body {
  font-size: clamp(15px, 1.25vw, 22px);
  line-height: 1.6;
  margin: 8px 0 0;
}

/* The forward question, nudging kids toward the signs in the scene */
.scene-prompt {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(14px, 1.05vw, 19px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 12px 0 0;
}
.scene-prompt:empty { display: none; }

/* ---------- Passport modal ---------- */

.passport-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(25, 33, 22, 0.6);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: 20px;
}
.passport-modal[hidden] { display: none; }

.passport-book {
  position: relative;
  width: min(680px, 100%);
  max-height: 86vh;
  overflow-y: auto;
  background: var(--paper) var(--grain);
  border: 2px solid var(--paper-edge);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 26px 28px 30px;
  animation: fact-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.passport-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 28px;
  color: var(--pine-deep);
  margin: 0;
  text-align: center;
}

.passport-subtitle {
  text-align: center;
  color: var(--ink-soft);
  font-size: 15px;
  margin: 6px 0 20px;
}

.passport-close {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-soft);
  padding: 4px 6px;
}
.passport-close:hover { color: var(--clay); }

.stamp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 16px;
}

.stamp {
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 12px;
}

.stamp-empty {
  border: 3px dashed var(--paper-edge);
  color: var(--paper-edge);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 26px;
}

.stamp-earned {
  border: 3px double var(--pine);
  color: var(--pine-deep);
  background: rgba(62, 107, 78, 0.08);
  box-shadow: inset 0 0 0 6px rgba(247, 239, 220, 0.6);
}
.stamp-earned:nth-child(odd) { transform: rotate(-5deg); border-color: var(--clay); color: var(--clay-deep); }
.stamp-earned:nth-child(3n) { transform: rotate(4deg); border-color: var(--river); color: var(--river-deep); }

.stamp-emoji { font-size: 28px; display: block; }

.stamp-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.25;
  margin-top: 4px;
  display: block;
}

/* ---------- Intro overlay ---------- */

.intro {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(25, 33, 22, 0.55);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  padding: 20px;
}
.intro[hidden] { display: none; }

.intro-card {
  width: min(520px, 100%);
  background: var(--paper) var(--grain);
  border: 2px solid var(--paper-edge);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 34px 32px 36px;
  text-align: center;
  animation: fact-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.intro-drop {
  font-size: 56px;
  animation: drop-bounce 1.8s ease-in-out infinite;
}
@keyframes drop-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.intro-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 30px;
  color: var(--pine-deep);
  margin: 10px 0 8px;
}

.intro-body {
  font-size: 16.5px;
  line-height: 1.6;
  margin: 0 0 22px;
}

.intro-start {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  background: var(--clay);
  color: #fff7ea;
  border-radius: 999px;
  border-bottom: 5px solid var(--clay-deep);
  padding: 13px 32px;
  transition: transform 0.15s ease, filter 0.15s ease;
}
.intro-start:hover { transform: translateY(-2px) scale(1.04); filter: brightness(1.08); }

/* ---------- Small screens ---------- */

@media (max-width: 560px) {
  .trailhead-title, .passport-label { display: none; }
  .story-card { max-height: 34vh; padding: 13px 16px 15px; }
  .hotspot { width: 40px; height: 40px; }
  .hotspot-tag { display: none; }
  /* Keep in-scene elements above the story panel's territory,
     staggered so clamped signs don't pile onto one row */
  .hotspot, .nav-sign { top: min(var(--y), 52%); }
  .nav-sign:nth-child(odd) { top: min(var(--y), 42%); }
  .nav-sign-next { font-size: 14px; padding: 7px 13px; }
  .nav-sign-back { font-size: 12px; padding: 5px 10px; }
}