* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  font-family: 'Space Grotesk', sans-serif;
  user-select: none;
}

/* ── Canvas ── */
#bg {
  position: fixed;
  inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}

/* ── Clock Card ── */
.clock-wrap {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  pointer-events: none;
}

.clock-display {
  background: rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 28px;
  padding: 2.5rem 3.5rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  box-shadow: 0 8px 60px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}

/* ── Segments ── */
.unit-group {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.group-divider {
  width: 1px;
  height: 64px;
  background: rgba(255,255,255,0.15);
  margin: 0 1.2rem;
}

.segment {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.5rem;
}

.seg-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 700;
  color: #ffffff;
  line-height: 1;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}

.seg-label {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

@keyframes digitSlide {
  from { transform: translateY(20%); opacity: 0; }
  to   { transform: translateY(0);   opacity: 1; }
}
.seg-value.changed { animation: digitSlide 0.18s ease-out; }

.sep {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  color: rgba(255,255,255,0.25);
  line-height: 1;
  padding-bottom: 1rem;
}

.empty-msg {
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── UI Overlay (fade on idle) ── */
.ui-overlay {
  position: fixed;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: opacity 0.8s ease;
}

.ui-overlay.hidden { opacity: 0; pointer-events: none; }

/* ── Toggle Row ── */
.toggle-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.tog {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 99px;
  color: rgba(255,255,255,0.45);
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.9rem;
  transition: all 0.2s;
  backdrop-filter: blur(12px);
}
.tog.active {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}
.tog:hover:not(.active) {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.7);
}

.fmt-divider {
  margin-left: 0.6rem;
  border-left: 1px solid rgba(255,255,255,0.15);
  padding-left: 1.2rem;
}

.ampm {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1rem, 2.5vw, 1.8rem);
  font-weight: 700;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  align-self: flex-start;
  padding-top: 0.4rem;
  margin-left: 0.3rem;
}

/* ── Scene Row ── */
.scene-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.scene-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 99px;
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.45rem 1.2rem;
  transition: all 0.2s;
  backdrop-filter: blur(12px);
}
.scene-btn.active {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.scene-btn:hover:not(.active) {
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85);
}