#overlay-ui {
  position:absolute;
  top:0;
  left:0;
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  padding: .8rem 1rem;
  pointer-events:none;
}

#metrics-panel {
  display:flex;
  flex-direction:column;
  gap:.7rem;
  max-width:280px;
  pointer-events:none;
}

#metrics-panel > * {
  pointer-events:auto;
}

#session-cluster {
  display:flex;
  flex-direction:column;
  gap:.6rem;
  align-items:flex-end;
  pointer-events:auto;
}

#session-status-text {
  font-size:.78rem;
  opacity:.75;
  padding:.2rem .5rem;
  border-radius:999px;
  background:rgba(255,255,255,0.55);
  border:1px solid rgba(0,0,0,0.08);
  letter-spacing:.05em;
}

.panel-card {
  backdrop-filter: blur(8px);
  background: var(--panel-bg);
  border:1px solid var(--panel-border);
  border-radius: 14px;
  box-shadow:0 4px 12px rgba(0,0,0,0.12);
  padding:.6rem .9rem;
}

.panel-title {
  font-size:.78rem;
  letter-spacing:.06em;
  font-weight:600;
  opacity:.75;
  margin-bottom:.45rem;
}

#progress-wrap {
  display:flex;
  flex-direction:column;
  gap:.4rem;
  min-width:220px;
}

#progress-bar {
  width:100%;
  height:10px;
  background:rgba(0,0,0,0.08);
  border-radius:999px;
  overflow:hidden;
  position:relative;
}

#progress-fill {
  height:100%;
  width:0%;
  background: linear-gradient(90deg,#8cc56a,#6aa56a,#4d8352);
  border-radius:inherit;
  transition: width .4s ease;
  position:relative;
}

#progress-fill:after {
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(255,255,255,0.7),rgba(255,255,255,0) 55%);
  mix-blend-mode:overlay;
  animation: sheen 3.2s linear infinite;
}

@keyframes sheen {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

#level-label {
  font-size:.85rem;
  letter-spacing:.05em;
  font-weight:600;
  text-shadow:0 1px 2px rgba(255,255,255,0.8);
}

#session-time {
  backdrop-filter: blur(8px);
  background: var(--panel-bg);
  border:1px solid var(--panel-border);
  padding:.55rem .9rem;
  border-radius: 14px;
  font-size:.9rem;
  min-width:70px;
  text-align:center;
  box-shadow:0 4px 12px rgba(0,0,0,.12);
  pointer-events:auto;
}

#btn-exit {
  pointer-events:auto;
  font-size:1.4rem;
  line-height:1;
  padding:.4rem .9rem;
  background: linear-gradient(150deg,#f7bbb5,#f28e86);
  color:#5d2a27;
}

.start-panel {
  max-width:620px;
  width:100%;
  margin:0 auto 1.5rem;
  display:flex;
  flex-direction:column;
  gap:1rem;
}

.start-panel select,
.start-panel label {
  font-size:.85rem;
}

.mode-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap:.8rem;
}

.mode-option {
  position:relative;
  display:flex;
  gap:.65rem;
  align-items:flex-start;
  padding:.75rem;
  border:1px solid rgba(0,0,0,0.08);
  border-radius:12px;
  background:rgba(255,255,255,0.45);
  cursor:pointer;
  transition: background .25s ease, border .25s ease;
}

.mode-option:hover {
  background:rgba(255,255,255,0.75);
  border-color:rgba(0,0,0,0.14);
}

.mode-option input {
  margin-top:.25rem;
}

.mode-option input:checked + .mode-body,
.mode-option input:checked ~ .mode-body {
  color:#3c593c;
}

.mode-title {
  font-weight:600;
  margin-bottom:.2rem;
}

.mode-desc {
  font-size:.78rem;
  opacity:.7;
  line-height:1.4;
}

.countdown-config {
  display:flex;
  align-items:center;
  gap:.6rem;
  margin-top:.6rem;
  font-size:.85rem;
}

.countdown-config select {
  padding:.4rem .6rem;
  border-radius:10px;
  border:1px solid rgba(0,0,0,0.12);
  background:rgba(255,255,255,0.75);
}

.countdown-config.hidden {
  display:none;
}

#volume-panel {
  display:flex;
  flex-direction:column;
  gap:.4rem;
}

#volume-panel.goal-met .volume-meter {
  box-shadow:0 0 14px rgba(144,214,151,0.35);
}

.volume-meter {
  position:relative;
  width:100%;
  height:74px;
  background:rgba(0,0,0,0.08);
  border-radius:12px;
  overflow:hidden;
}

.volume-meter.boost {
  background:linear-gradient(180deg,rgba(155,226,125,0.28),rgba(0,0,0,0.08));
}

#volume-level {
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:0%;
  background:linear-gradient(180deg,#9be27d,#58ba62);
  transition:height .25s ease;
}

#volume-target {
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:rgba(255,255,255,0.7);
  box-shadow:0 0 4px rgba(255,255,255,0.8);
  opacity:.95;
}

.volume-info {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:.75rem;
  opacity:.8;
}

#volume-text {
  font-variant-numeric: tabular-nums;
}

#growth-panel {
  display:flex;
  flex-direction:column;
  gap:.4rem;
}

#growth-chart {
  width:100%;
  height:78px;
  display:block;
  background:rgba(0,0,0,0.04);
  border-radius:10px;
}

.chart-hint {
  font-size:.68rem;
  opacity:.58;
}

#stats-panel {
  display:flex;
  flex-direction:column;
  gap:.6rem;
}

.stats-grid {
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:.6rem;
}

.stat-item {
  background:rgba(255,255,255,0.48);
  border-radius:12px;
  padding:.45rem .55rem;
  display:flex;
  flex-direction:column;
  gap:.18rem;
}

.stat-label {
  font-size:.72rem;
  opacity:.7;
}

.stat-value {
  font-size:.96rem;
  font-weight:600;
  font-variant-numeric: tabular-nums;
}

.stat-diff {
  font-size:.7rem;
  color:#5a8660;
}

.stat-diff.negative {
  color:#c96c5d;
}

.modal {
  position:fixed;
  inset:0;
  background:rgba(0,0,0,0.35);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:1.5rem;
  z-index:999;
  transition: opacity .3s ease;
}

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

.modal-card {
  width:min(640px, 100%);
  background:rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-radius:18px;
  box-shadow:0 24px 60px -25px rgba(0,0,0,0.45);
  padding:1.4rem 1.6rem;
  display:flex;
  flex-direction:column;
  gap:1rem;
  border:1px solid rgba(255,255,255,0.6);
}

.modal-title {
  margin:0;
  font-size:1.4rem;
  letter-spacing:.05em;
}

.modal-body {
  display:flex;
  flex-direction:column;
  gap:1rem;
}

.summary-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
  gap:.9rem;
}

.summary-item {
  background:rgba(255,255,255,0.7);
  border-radius:14px;
  padding:.75rem .9rem;
  display:flex;
  flex-direction:column;
  gap:.3rem;
  border:1px solid rgba(0,0,0,0.06);
}

.summary-label {
  font-size:.78rem;
  opacity:.7;
}

.summary-value {
  font-size:1.1rem;
  font-weight:600;
}

.summary-note {
  font-size:.72rem;
  color:#5a8660;
}

.summary-note.negative {
  color:#c96c5d;
}

.session-extra {
  font-size:.85rem;
  display:flex;
  flex-direction:column;
  gap:.35rem;
  background:rgba(255,255,255,0.58);
  border-radius:12px;
  padding:.7rem .85rem;
  border:1px solid rgba(0,0,0,0.08);
}

.summary-chart-block {
  display:flex;
  flex-direction:column;
  gap:.5rem;
  background:rgba(255,255,255,0.68);
  border-radius:12px;
  padding:.7rem .85rem;
  border:1px solid rgba(0,0,0,0.06);
}

.summary-chart-title {
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.04em;
}

#summary-growth-chart {
  width:100%;
  height:120px;
  display:block;
  background:rgba(0,0,0,0.04);
  border-radius:10px;
}

.summary-chart-hint {
  font-size:.7rem;
  opacity:.6;
}

.summary-chart-axis {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:.75rem;
  font-variant-numeric: tabular-nums;
  color:rgba(75,70,63,0.8);
  margin-top:.2rem;
  position:relative;
  padding-top:.45rem;
}

.summary-chart-axis::before {
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:rgba(0,0,0,0.12);
}

.modal-actions {
  display:flex;
  justify-content:flex-end;
}

.modal-actions button {
  min-width:140px;
}