body { font-family: -apple-system, BlinkMacSystemFont, sans-serif; margin: 0; background: #0c0c0c; color: #fff; }
.container { padding: 20px; max-width: 500px; margin: auto; }
h1 { font-size: 1.8rem; text-align: center; margin: 16px 0 18px; }

.section { background: #1a1a1a; padding: 16px; border-radius: 14px; margin-bottom: 16px; position: relative; }
.label { font-size: 0.9rem; opacity: .7; }
.input { width: 100%; padding: 12px; border-radius: 10px; border: none; margin-top: 8px; font-size: 1rem; box-sizing: border-box; }
.button { width: 100%; padding: 14px; background: #3d7cff; color: #fff; border: none; border-radius: 12px; margin-top: 14px; font-size: 1rem; font-weight: 600; }
.button.hr-connected { background: #dc2626; }
.button.hr-connected:hover { background: #b91c1c; }

.start-button-row { display: flex; align-items: stretch; gap: 10px; margin-top: 14px; }
.start-button-row .button { margin-top: 0; flex: 1; min-width: 0; box-sizing: border-box; }
.start-button-row .button-cancel-workout { flex: 0 0 auto; width: auto; padding: 14px 16px; font-size: 1rem; background: #444; box-sizing: border-box; height: 100%; min-height: 0; }
.start-button-row .button-cancel-workout:hover { background: #555; }

.metric { font-size: 1rem; margin-top: 6px; text-align: center; }
.workout-day-row { margin-top: 6px; }
.workout-day-select { width: 100%; max-width: 100%; font-size: 1rem; padding: 8px 12px; border-radius: 10px; border: 1px solid #333; background: #232323; color: #fff; cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23888' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; box-sizing: border-box; }
.workout-day-select:focus { outline: none; border-color: #3d7cff; }
.phase-box { display: flex; justify-content: space-between; align-items: center; font-size: 1.5rem; padding: 14px; background: #232323; border-radius: 12px; margin-top: 18px; }
.phase-box .phase-name { flex: 1; text-align: left; }
.phase-box .phase-time { flex: 0 0 auto; text-align: right; font-weight: 600; }
.time-left { text-align: center; font-size: 1.1rem; margin-top: 10px; opacity: .9; }
.work-blocks { text-align: center; margin-top: 8px; font-size: 0.55rem; opacity: .8; }
.hr-target { text-align: center; font-size: 0.7rem; opacity: .9; }
.hr-now { 
  text-align: center; 
  color: white !important; 
  font-weight: 600; 
  font-size: 1.2rem; 
  pointer-events: none; 
  z-index: 10;
}
.calories { text-align: center; margin-top: 6px; font-size: 0.9rem; opacity: .9; }

.hamburger { position: fixed; top: 10px; right: 12px; font-size: 28px; cursor: pointer; padding: 6px 10px; z-index: 20; }
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: none; align-items: center; justify-content: center; z-index: 15; }
.modal { background: #1a1a1a; padding: 24px; border-radius: 14px; width: 90%; max-width: 400px; position: relative; }
.modal-title { font-size: 1.4rem; margin-bottom: 20px; text-align: center; font-weight: 600; }
.close-btn { float: right; cursor: pointer; font-size: 22px; margin-top: -6px; opacity: 0.7; }
.close-btn:hover { opacity: 1; }
.app-version { position: absolute; bottom: 12px; right: 12px; font-size: 0.75rem; opacity: 0.5; color: #888; }
.modal-actions { display: flex; gap: 10px; margin-top: 18px; }
.modal-actions .button { flex: 1; width: auto; }
.modal-actions .button.secondary { background: #444; }
.modal-actions .button.secondary:hover { background: #555; }
.modal-field { margin-bottom: 14px; display: flex; align-items: center; gap: 12px; }
.modal-label { font-size: 0.9rem; opacity: 0.85; font-weight: 500; min-width: 80px; flex-shrink: 0; }
.modal-input { flex: 1; padding: 10px 12px; border-radius: 10px; border: 1px solid #333; background: #232323; color: #fff; font-size: 1rem; box-sizing: border-box; }
.modal-input:focus { outline: none; border-color: #3d7cff; }
.modal-input::placeholder { opacity: 0.5; }
.modal-section { margin-bottom: 16px; }
.modal-section-title { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px; opacity: 0.6; margin-bottom: 10px; font-weight: 600; }

/* Tab styles */
.tab-buttons { display: flex; gap: 8px; margin-bottom: 20px; border-bottom: 1px solid #333; }
.tab-button { flex: 1; padding: 12px; background: transparent; border: none; color: #888; font-size: 1rem; font-weight: 500; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all 0.2s; }
.tab-button:hover { color: #fff; }
.tab-button.active { color: #3d7cff; border-bottom-color: #3d7cff; }
.tab-content { display: none; min-height: 400px; }
.tab-content.active { display: block; }
.tab-label-short { display: none; }
.tab-label-long { display: inline; }

/* Preference toggle row */
.modal-field-toggle { align-items: center; }
.modal-field-toggle .modal-label { margin-bottom: 0; }
.preference-toggle { width: 20px; height: 20px; accent-color: #3d7cff; cursor: pointer; flex-shrink: 0; }

/* Workout summary list */
.workout-summary-list { max-height: 60vh; overflow-y: auto; min-height: 350px; }

/* Sync content */
.sisu-sync-content { min-height: 350px; }

/* Battery indicator pill (Settings -> Sync): dot, level bar, percentage */
.battery-pill {
  --battery-accent: #22c55e;
  --battery-pct: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.95);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.battery-pill::after {
  content: "";
  order: 1;
  width: 40px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--battery-accent) calc(var(--battery-pct) * 1%),
    rgba(255,255,255,0.18) 0
  );
  flex-shrink: 0;
}
.battery-pill .battery-pill-pct {
  order: 2;
}
.battery-pill[data-battery-state="good"] { --battery-accent: #22c55e; }
.battery-pill[data-battery-state="med"] { --battery-accent: #f59e0b; }
.battery-pill[data-battery-state="low"] { --battery-accent: #ef4444; }

/* Install content */
.install-content { min-height: 350px; }
.install-installed-state { text-align: center; }
.install-checkmark { font-size: 2.5rem; color: #22c55e; margin-bottom: 12px; line-height: 1; }
.workout-item { 
  background: #232323; 
  padding: 16px; 
  border-radius: 10px; 
  margin-bottom: 12px; 
  position: relative;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  --drag-x: 0px;
  transform: translate3d(var(--drag-x), 0, 0);
  transition: transform 0.2s ease-out;
  overflow: hidden;
}
.workout-item.dragging {
  transition: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.workout-item.deleting {
  pointer-events: none;
  opacity: 0;
  filter: blur(1px);
  --drag-x: -12px;
  transition: opacity 0.5s ease, filter 0.5s ease, transform 0.35s ease;
}
/* Left edge: shows when swiping right → SISU (blue) */
.swipe-left-indicator {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(to bottom, #3d7cff, #2563eb);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.workout-item[data-drag-direction="right"] .swipe-left-indicator {
  opacity: 0.6;
}
.workout-item[data-swipe-armed="true"][data-drag-direction="right"] .swipe-left-indicator {
  opacity: 0.9;
}
/* Right edge: shows when swiping left → delete (red) */
.swipe-right-indicator {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(to bottom, #ef4444, #dc2626);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.workout-item[data-drag-direction="left"] .swipe-right-indicator {
  opacity: 0.6;
}
.workout-item[data-swipe-armed="true"][data-drag-direction="left"] .swipe-right-indicator {
  opacity: 0.9;
}
@keyframes swipe-complete-glow {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.0); }
  50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.12); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.0); }
}
@keyframes swipe-complete-glow-right {
  0% { box-shadow: 0 0 0 0 rgba(61, 124, 255, 0.0); }
  50% { box-shadow: 0 0 0 8px rgba(61, 124, 255, 0.12); }
  100% { box-shadow: 0 0 0 0 rgba(61, 124, 255, 0.0); }
}
.workout-item.swipe-complete {
  animation: swipe-complete-glow 0.35s ease-out;
}
.workout-item[data-drag-direction="right"].swipe-complete {
  animation: swipe-complete-glow-right 0.35s ease-out;
}
.workout-item.sending {
  opacity: 0.6;
  pointer-events: none;
}

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #1a1a1a;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s ease;
  max-width: 90%;
  text-align: center;
  font-size: 0.9rem;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast-success {
  border-left: 4px solid #10b981;
}
.toast-error {
  border-left: 4px solid #ef4444;
}
.toast-info {
  border-left: 4px solid #3d7cff;
}
.workout-item-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; position: relative; }
.workout-item-date { font-size: 0.9rem; opacity: 0.7; }
.workout-item-title { font-size: 1.1rem; font-weight: 600; }
.workout-item-cancelled { color: #e53935; font-size: 0.7rem; text-transform: lowercase; font-weight: 600; flex-shrink: 0; margin-left: 8px; }
.workout-item-details { font-size: 0.85rem; opacity: 0.8; margin-top: 8px; display: flex; gap: 16px; flex-wrap: wrap; }
.workout-item-detail { }
.workout-item-actions { display: flex; gap: 8px; margin-top: 12px; }
.workout-item-actions .button { margin-top: 0; padding: 10px; font-size: 0.9rem; }
.workout-item-actions .button.secondary { background: #444; }

.ring-container { position: relative; width: 10.625rem; height: 10.625rem; margin: 1.125rem auto 0.375rem; }
.ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: #333; stroke-width: 8; }
.ring-progress { fill: none; stroke: #3d7cff; stroke-width: 8; stroke-linecap: round; stroke-dasharray: 339.292; stroke-dashoffset: 339.292; transition: stroke-dashoffset 0.25s linear; }
.ring-center { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 1.1rem; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 0.15rem; cursor: pointer; touch-action: manipulation; user-select: none; }
.ring-center #ringCenterText { pointer-events: none; }
.ring-center-label { font-size: 0.65rem; text-transform: lowercase; opacity: 0.85; pointer-events: none; }

/* Heart pulsation animation - scale only so heart and HR text stay aligned */
@keyframes heartPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* Icon container for consistent alignment */
.icon-container {
  position: absolute;
  width: 5rem;
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Heart container - anchors heart, BPM, and range together */
.heart-container {
  position: absolute;
  left: calc(50% - 12.5rem);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 5rem;
  height: 5rem;
}

#heartIcon {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(27%) sepia(100%) saturate(10000%) hue-rotate(0deg);
  transform-origin: center center;
  /* Animation (BPM-based duration) is set by JS in updateHeartPulse() */
}

#activityIcon {
  position: absolute;
  left: calc(50% + 12.5rem);
  top: 50%;
  width: 5rem;
  height: 5rem;
  max-width: 5rem;
  max-height: 5rem;
  object-fit: contain;
  object-position: center;
  filter: brightness(0) invert(1);
  transform: translate(-50%, -50%);
  transform-origin: center center;
}

/* BPM value - centered within heart icon */
#hrNow {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white !important;
  font-weight: 600;
  font-size: 1.2rem;
  pointer-events: none;
  z-index: 10;
  width: 100%;
}

/* HR range - directly below heart icon, anchored to heart container */
#hrTarget {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  text-align: center;
  margin-top: 0.5rem;
  font-size: 0.7rem;
  opacity: 0.9;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  z-index: 5;
  color: inherit;
}

/* Mobile view - optimize for tall screens like Pixel 8 (1080x2400) */
@media (max-width: 768px) and (orientation: portrait) {
  /* Increase container padding and spacing */
  .container { 
    padding: 24px 20px 40px 20px; 
    max-width: 100%;
  }
  
  /* Increase section spacing */
  .section { 
    padding: 24px 24px 32px 24px; 
    border-radius: 16px; 
    margin-bottom: 28px; 
    min-height: auto;
  }
  
  /* Increase text sizes for better readability */
  .label { font-size: 1rem; }
  .input { 
    padding: 14px; 
    font-size: 1.1rem; 
    margin-top: 10px; 
  }
  .button { 
    padding: 16px; 
    font-size: 1.1rem; 
    margin-top: 18px; 
    border-radius: 14px;
  }
  
  /* Increase metric and phase box sizes */
  .metric { 
    font-size: 1.2rem; 
    margin-top: 10px; 
    margin-bottom: 16px;
  }
  .phase-box { 
    font-size: 1.8rem; 
    padding: 20px; 
    border-radius: 14px; 
    margin-top: 28px; 
    margin-bottom: 8px;
  }
  .work-blocks { 
    font-size: 0.7rem; 
    margin-top: 12px; 
  }
  
  /* Increase spacing for start button row; keep both buttons aligned (no margin on #startButton) */
  .start-button-row {
    margin-top: 20px;
    margin-bottom: 8px;
  }
  .start-button-row .button-cancel-workout {
    padding: 16px 16px;
    font-size: 1.1rem;
  }
  
  /* Make ring larger and add more spacing */
  .ring-container { 
    width: 16rem; 
    height: 16rem; 
    margin: 2.5rem auto 2rem; 
  }
  .ring-bg { stroke-width: 10; }
  .ring-progress { stroke-width: 10; }
  .ring-center { font-size: 1.4rem; }
  
  /* Add extra bottom padding to workout section for icon spacing */
  .workout-main-section {
    padding-bottom: 6rem !important;
  }
  
  .ring-wrapper {
    min-height: 20rem;
    padding-bottom: 4rem;
  }
  
  /* Reposition heart container to bottom left of section - aligned baseline */
  .heart-container {
    position: absolute !important;
    left: 1.5rem !important;
    bottom: 1.5rem !important;
    top: auto !important;
    width: 4rem !important;
    height: 4rem !important;
    transform: translateY(50%) !important;
  }
  
  #heartIcon {
    position: relative !important;
    width: 100% !important;
    height: 100% !important;
    transform: none;
    transform-origin: center center !important;
    object-fit: contain !important;
    object-position: center center !important;
    /* Animation (BPM-based duration) is set by JS in updateHeartPulse() - transform has no !important so keyframes can apply */
  }
  
  /* Reposition activity icon to bottom right of section - aligned baseline */
  #activityIcon {
    position: absolute !important;
    right: 1.5rem !important;
    bottom: 1.5rem !important;
    left: auto !important;
    top: auto !important;
    width: 4rem !important;
    height: 4rem !important;
    max-width: 4rem !important;
    max-height: 4rem !important;
    transform: translateY(50%) !important;
    transform-origin: center bottom !important;
    object-fit: contain !important;
    object-position: center bottom !important;
  }
  
  /* HR Now display - centered within heart icon */
  #hrNow {
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    bottom: auto !important;
    transform: translate(-50%, -50%) !important;
    font-size: 1.2rem !important;
    text-align: center !important;
    color: white !important;
    font-weight: 600 !important;
    pointer-events: none !important;
    z-index: 10 !important;
    width: 100% !important;
  }
  
  /* HR target below heart icon - anchored to heart container */
  #hrTarget {
    position: absolute !important;
    left: 50% !important;
    top: 100% !important;
    bottom: auto !important;
    transform: translateX(-50%) !important;
    font-size: 0.75rem !important;
    text-align: center !important;
    margin-top: 0.5rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    max-width: 200px !important;
  }
  
  
  /* Optimize modals for mobile */
  .modal {
    width: 95%;
    max-width: 95%;
    padding: 20px;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .modal-title {
    font-size: 1.3rem;
    margin-bottom: 18px;
  }
  
  .tab-button {
    padding: 14px;
    font-size: 1rem;
  }
  
  .tab-label-long { display: none; }
  .tab-label-short { display: inline; }
  
  /* Heart pulse animation for mobile - scale only so heart and HR text stay in place */
  @keyframes heartPulseMobile {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
  }
}

/* Landscape view - increase everything by 20% */
@media (orientation: landscape) {
  body { font-size: 1.2rem; }
  .container { padding: 24px; max-width: 600px; }
  h1 { font-size: 2.16rem; margin: 19.2px 0 21.6px; }
  
  .section { padding: 19.2px; border-radius: 16.8px; margin-bottom: 19.2px; }
  .label { font-size: 1.08rem; }
  .input { padding: 14.4px; border-radius: 12px; margin-top: 9.6px; font-size: 1.2rem; }
  .button { padding: 16.8px; border-radius: 14.4px; margin-top: 16.8px; font-size: 1.2rem; }
  .start-button-row .button-cancel-workout { padding: 16.8px 16px; font-size: 1.2rem; }
  
  .metric { font-size: 1.2rem; margin-top: 7.2px; }
  .phase-box { font-size: 1.8rem; padding: 16.8px; border-radius: 14.4px; margin-top: 21.6px; }
  .time-left { font-size: 1.32rem; margin-top: 12px; }
  .work-blocks { font-size: 1.14rem; margin-top: 12px; }
  .hr-target { font-size: 1.08rem; margin-top: 9.6px; }
  .calories { font-size: 1.08rem; margin-top: 7.2px; }
  
  .hamburger { top: 12px; right: 14.4px; font-size: 33.6px; padding: 7.2px 12px; }
  .modal { padding: 28.8px; border-radius: 16.8px; max-width: 480px; }
  .modal-title { font-size: 1.68rem; margin-bottom: 24px; }
  .close-btn { font-size: 26.4px; margin-top: -7.2px; }
  .modal-actions { gap: 12px; margin-top: 21.6px; }
  .modal-field { margin-bottom: 16.8px; gap: 14.4px; }
  .modal-label { font-size: 1.08rem; min-width: 96px; }
  .modal-input { padding: 12px 14.4px; border-radius: 12px; font-size: 1.2rem; }
  .modal-section { margin-bottom: 19.2px; }
  .modal-section-title { font-size: 1.02rem; margin-bottom: 12px; }
  
  .ring-container { width: 12.75rem; height: 12.75rem; margin: 1.35rem auto 0.45rem; }
  .ring-bg { stroke-width: 9.6; }
  .ring-progress { stroke-width: 9.6; }
  .ring-center { font-size: 1.32rem; }
  .heart-container {
    left: calc(50% - 15rem) !important;
    width: 6rem !important;
    height: 6rem !important;
  }
  
  #heartIcon { 
    width: 100% !important;
    height: 100% !important;
  }
  #activityIcon { 
    left: calc(50% + 15rem) !important;
    width: 6rem !important;
    height: 6rem !important;
    max-width: 6rem !important;
    max-height: 6rem !important;
    object-fit: contain !important;
    object-position: center !important;
    transform: translate(-50%, -50%) !important;
    transform-origin: center center !important;
  }
  #hrNow {
    font-size: 1.44rem !important;
  }
}

/* Downregulation: faded HR readout bottom-left (above goo/noise layers so it stays visible) */
.downregulation-hr-display {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.4);
  opacity: 0.7;
  pointer-events: none;
  z-index: 7;
}

/* Downregulation: tap-to-stop play icon (white, center, 1s then fade) */
.downregulation-play-wrap {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  pointer-events: none;
  z-index: 6;
  transition: opacity 0.4s ease-out;
}
.downregulation-play-wrap--clickable {
  pointer-events: auto;
  cursor: pointer;
}
.downregulation-play-wrap--fade {
  opacity: 0;
}
.downregulation-play-icon {
  display: block;
  width: 0;
  height: 0;
  border-left: 4rem solid #fff;
  border-top: 2.5rem solid transparent;
  border-bottom: 2.5rem solid transparent;
  margin-left: 0.5rem;
}
.downregulation-play-label {
  color: #0d9488;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

/* Downregulation: session hint (fade-in then fade-out after session starts) */
.downregulation-session-hint {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 6;
  color: #0d9488;
  font-size: 1.1rem;
  font-weight: 500;
  text-align: center;
  padding: 1rem;
}

/* Downregulation: session stats panel (after tap to stop) */
.downregulation-stats-panel {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(22rem, calc(100% - 3rem));
  max-height: calc(100% - 3rem);
  display: none;
  flex-direction: column;
  align-items: stretch;
  padding: 1.5rem;
  background: rgba(18, 18, 22, 0.95);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 7;
  overflow-y: auto;
}
.downregulation-stats-title {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  text-align: center;
}
.downregulation-stats-content {
  flex: 1;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.5;
}
.downregulation-hr-graph-wrap {
  width: 100%;
  height: 120px;
  margin-bottom: 1rem;
  border-radius: 0.5rem;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.25);
}
.downregulation-hr-graph {
  display: block;
  width: 100%;
  height: 100%;
}
.downregulation-stats-line {
  margin: 0.35rem 0;
}
.downregulation-stats-done {
  margin-top: 0.5rem;
}

/* Downregulation: settings button (bottom right) */
.downregulation-settings-btn {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  z-index: 8;
  width: 44px;
  height: 44px;
  padding: 8px;
  border: none;
  border-radius: 50%;
  background: rgba(18, 18, 22, 0.85);
  color: #0d9488;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.downregulation-settings-btn:hover {
  background: rgba(28, 28, 34, 0.9);
}
.downregulation-settings-btn img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: invert(1);
  opacity: 0.85;
}

/* Downregulation: preferences modal */
.downregulation-prefs-modal-bg {
  align-items: center;
  justify-content: center;
  z-index: 25;
}
.downregulation-prefs-modal {
  max-width: 20rem;
}
.downregulation-prefs-modal .tab-content {
  min-height: 0;
}
.downregulation-prefs-tabs.tab-buttons {
  margin-bottom: 1rem;
}
.downregulation-prefs-modal .modal-field-column {
  flex-direction: column;
  align-items: stretch;
}

/* Target HR number input: uses .modal-input; constrain width and style number spinners for dark theme */
.downregulation-prefs-modal .downregulation-noise-target-hr {
  max-width: 6rem;
}
.downregulation-prefs-modal .downregulation-noise-target-hr::-webkit-outer-spin-button,
.downregulation-prefs-modal .downregulation-noise-target-hr::-webkit-inner-spin-button {
  opacity: 0.7;
  color: #fff;
}
.downregulation-style-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--border-color, #333);
  border-radius: 6px;
  overflow: hidden;
}
.downregulation-style-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  transition: background 0.15s;
}
.downregulation-style-option:hover {
  background: rgba(255, 255, 255, 0.1);
}
.downregulation-style-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.downregulation-style-option:has(input:checked) {
  background: rgba(255, 255, 255, 0.15);
}
.downregulation-style-option span {
  font-size: 0.9rem;
}
.downregulation-goo-credit {
  margin: 0 0 14px 0;
  font-size: 0.7rem;
  opacity: 0.75;
  text-align: right;
  color: #e04040;
}
.downregulation-particle-size-value {
  text-align: center;
}

/* Goo (lava lamp) SVG overlay – full cover, pointer-events none so taps pass through */
.downregulation-goo-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}
.downregulation-goo-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Noise (concentric warped circles) canvas overlay – full cover, pointer-events none */
.downregulation-noise-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}
.downregulation-noise-canvas {
  display: block;
  width: 100%;
  height: 100%;
}