/* ═══════════════════════════════════════════════════════════
   SETTINGS PANEL
═══════════════════════════════════════════════════════════ */
.settings-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  opacity: 1;
  pointer-events: none;
  transition: background 1.0s cubic-bezier(0.16,1,0.3,1);
  z-index: 100;
}
.settings-overlay.show {
  background: rgba(0,0,0,0.38);
  pointer-events: all;
}

.settings-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 960px;
  height: 1080px;
  background: rgb(12,20,24);
  border-left: 1px solid rgba(238,247,247,0.04);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  opacity: 0;
  transition:
    transform 1.0s cubic-bezier(0.22,1,0.36,1),
    opacity   1.3s cubic-bezier(0.4,0,0.2,1) 0.15s;
  z-index: 101;
  pointer-events: none;
  box-shadow: -1px 0 0 rgba(238,247,247,0.04), -40px 0 80px rgba(0,0,0,0.35);
}
.settings-panel.show {
  transform: translateX(0);
  opacity: 1;
  pointer-events: all;
}

.settings-close {
  position: absolute;
  top: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.18s;
  z-index: 10;
  background: none;
  border: none;
  padding: 0;
}

.settings-power {
  position: absolute;
  bottom: 40px;
  left: calc(160px - 24px);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.18s;
  background: none;
  border: none;
  padding: 0;
}

.settings-body {
  display: flex;
  flex-direction: row;
  flex: 1;
  overflow: hidden;
}

/* left nav */
.settings-nav {
  width: 320px;
  flex-shrink: 0;
  padding: 0 0 0 64px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
  border-right: 1px solid rgba(238,247,247,0.05);
  background-size: cover;
  background-position: center;
}

.settings-tab {
  font-size: var(--body);
  font-weight: 200;
  color: var(--text-tertiary);
  padding: 14px 24px 14px 0;
  cursor: pointer;
  position: relative;
  user-select: none;
  white-space: nowrap;
  transition:
    color          0.6s cubic-bezier(0.16,1,0.3,1),
    letter-spacing 0.5s cubic-bezier(0.16,1,0.3,1);
}
.settings-tab.active {
  color: var(--accent);
  letter-spacing: 0.01em;
}
.settings-tab::before {
  content: '';
  position: absolute;
  left: -64px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  border-radius: 2px;
  background: var(--accent);
  height: 0;
  opacity: 0;
  transition:
    height  0.55s cubic-bezier(0.22,1,0.36,1) 0.1s,
    opacity 0.4s  cubic-bezier(0.22,1,0.36,1) 0.1s;
}
.settings-tab.active::before { height: 28px; opacity: 1; }

/* right content */
.settings-content {
  flex: 1;
  padding: 100px 80px 120px 64px;
  overflow-y: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  cursor: pointer;
}
.settings-section {
  cursor: default;
}
.settings-content::-webkit-scrollbar { display: none; }

/* section animation */
@keyframes settingsItemRise {
  from { transform: translateY(28px); }
  to   { transform: translateY(0); }
}
@keyframes settingsItemFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.settings-section { display: none; }
.settings-section.active { display: flex; flex-direction: column; justify-content: center; flex: 1; }
.settings-section.active > * { opacity: 0; }

.s-title {
  font-size: var(--t3);
  font-weight: 200;
  color: var(--text-primary);
  margin-bottom: 40px;
  letter-spacing: -0.01em;
}
.s-label {
  font-size: var(--caption);
  font-weight: 300;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.s-divider {
  height: 1px;
  background: rgba(238,247,247,0.06);
  margin: 28px 0;
}
.s-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.s-toggle-label {
  font-size: var(--body);
  font-weight: 300;
  color: var(--text-primary);
}
.s-toggle-sub {
  font-size: var(--caption);
  font-weight: 300;
  color: var(--text-tertiary);
  margin-top: 4px;
}
.s-select-value {
  font-size: var(--body);
  font-weight: 300;
  color: var(--text-tertiary);
  cursor: pointer;
}
.s-chevron { margin-left: 8px; }

/* toggle — dot + pill */
.s-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  flex-shrink: 0;
}
.s-toggle::before,
.s-toggle::after {
  content: '';
  border-radius: 16px;
  transition:
    width  0.35s cubic-bezier(0.16,1,0.3,1),
    height 0.35s cubic-bezier(0.16,1,0.3,1),
    background 0.35s ease;
}
.s-toggle::before {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(238,247,247,0.25);
  align-self: center;
}
.s-toggle::after {
  width: 44px;
  height: 32px;
  background: rgba(238,247,247,0.08);
  position: static;
  top: auto; left: auto;
  transform: none;
}
.s-toggle.on::before {
  width: 44px;
  height: 32px;
  border-radius: 16px;
  background: var(--accent-warm);
}
.s-toggle.on::after {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(238,247,247,0.25);
}

/* Locked toggle — can't be turned off */
.s-toggle-locked {
  opacity: 0.6;
  pointer-events: none;
}

/* Demo restart button */
.s-demo-restart {
  margin-top: 16px;
  padding: 20px 24px;
  border-radius: 16px;
  background: rgba(238,247,247,0.04);
  cursor: pointer;
  transition: background 0.3s ease;
}
.s-demo-restart-text {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-primary);
  display: block;
}
.s-demo-restart-sub {
  font-size: 12px;
  font-weight: 300;
  color: rgba(238,247,247,0.35);
  display: block;
  margin-top: 4px;
}

/* reversed slider (volume) — fill grows from right */
/* slider — two pill design */
.s-slider-wrap {
  position: relative;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
}
.s-slider-filled {
  height: 52px;
  background: var(--accent-warm);
  border-radius: 26px;
  flex-shrink: 0;
  flex-grow: 100;
  position: relative;
  transition: flex-grow 0.3s cubic-bezier(0.22,1,0.36,1), opacity 0.25s ease;
}
.s-slider-filled.full::after { display: none; }
.s-slider-filled::after {
  content: '';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.8);
}
.s-slider-empty {
  height: 52px;
  background: rgba(238,247,247,0.07);
  border-radius: 26px;
  flex-grow: 0;
  flex-shrink: 0;
  transition: flex-grow 0.3s cubic-bezier(0.22,1,0.36,1), opacity 0.25s ease;
}
.s-slider-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
  margin: 0;
}

/* bluetooth badge */
.s-device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.s-device-name { font-size: var(--body); font-weight: 300; color: var(--text-primary); }
.s-device-status { font-size: var(--caption); font-weight: 300; color: var(--text-tertiary); }
.s-device-status.connected { color: var(--accent); }
.s-pair-btn {
  font-size: var(--caption);
  font-weight: 300;
  color: var(--text-tertiary);
  padding: 8px 20px;
  border-radius: 20px;
  border: 1px solid rgba(238,247,247,0.15);
  cursor: pointer;
}

/* state label (debug) */
.state-label {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  font-weight: 300;
  color: rgba(238,247,247,0.2);
  letter-spacing: 0.06em;
  pointer-events: none;
  z-index: 200;
  display: none;
}