/* ══════════════════════════════════════
   § 5  SETTINGS PANEL
   ══════════════════════════════════════ */
#settings-panel {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(6px);
  z-index: 100;
  justify-content: center;
  align-items: flex-start;
  padding: 2%;
  overflow-y: auto;
}
#settings-panel.open { display: flex; }

.settings-card {
  background: rgba(245,247,250,0.97);
  border-radius: 22px;
  padding: 26px 20px 26px 22px;
  width: 94%;
  max-width: 520px;
  box-shadow: 0 30px 70px rgba(0,0,0,0.25);
  color: #1a1a2e;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.18) transparent;
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.settings-header h2 { font-size: 17px; font-weight: 600; }
.close-btn {
  background: rgba(0,0,0,0.07);
  border: none;
  border-radius: 50%;
  width: 30px; height: 30px;
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #555;
  transition: background 0.2s;
}
.close-btn:hover { background: rgba(0,0,0,0.14); }

.setting-group { margin-bottom: 18px; }

/* ══════════════════════════════════════
   § 6  SHARED SETTINGS CONTROLS
   ══════════════════════════════════════ */

.setting-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 7px;
  margin-top: 18px;
  display: block;
}
.settings-card .setting-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  margin-top: 0;
}

.toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.toggle-row:last-child { border-bottom: none; }
.toggle-label-text { font-size: 14px; color: #333; }
.toggle-row > span { font-size: 13px; color: #333; }

.toggle {
  position: relative;
  width: 44px; height: 24px;
  flex-shrink: 0;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.slider-track {
  position: absolute;
  inset: 0;
  background: #ccc;
  border-radius: 24px;
  cursor: pointer;
  transition: background 0.25s;
}
.slider-track::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 3px; top: 3px;
  background: white;
  border-radius: 50%;
  transition: transform 0.25s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.toggle input:checked + .slider-track { background: var(--accent, #007aff); }
.toggle input:checked + .slider-track::before { transform: translateX(20px); }

select {
  width: 100%;
  padding: 9px 36px 9px 12px;
  border-radius: 10px;
  border: 1.5px solid rgba(0,0,0,0.12);
  background: white;
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  color: #1a1a2e;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color 0.2s;
}
select:focus { border-color: var(--accent, #007aff); }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent, #007aff);
  height: 20px;
  padding: 4px 0 6px;
  box-sizing: border-box;
  cursor: pointer;
  display: block;
  overflow: visible;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.theme-swatch {
  height: 44px;
  border-radius: 10px;
  cursor: pointer;
  border: 2.5px solid transparent;
  transition: border-color 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
}
.theme-swatch:hover { transform: scale(1.06); }
.theme-swatch.active { border-color: var(--accent, #007aff); }
.theme-swatch::after {
  content: attr(data-label);
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.45);
  color: white;
  font-size: 8px;
  text-align: center;
  padding: 2px 0;
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  background: rgba(0,122,255,0.08);
  border: 1.5px dashed rgba(0,122,255,0.3);
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--accent-text-dark, var(--accent, #007aff));
  font-family: 'DM Sans', sans-serif;
  width: 100%;
  transition: background 0.2s;
  margin-top: 8px;
}
.file-btn:hover { background: rgba(0,122,255,0.13); }

#custom-sound-name,
#custom-name {
  font-size: 11px;
  color: #888;
  margin-top: 5px;
}

.btn-preview-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}
.btn-preview {
  flex: 1;
  padding: 8px;
  border: 1px solid rgba(0,0,0,0.13);
  border-radius: 9px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  background: rgba(0,0,0,0.09);
  color: #111;
  transition: background 0.15s;
}
.btn-preview:hover  { background: rgba(0,0,0,0.17); }
.btn-preview:active { background: rgba(0,0,0,0.24); transform: scale(0.97); }

.settings-footer {
  text-align: center;
  font-size: 10px;
  color: #aaa;
  margin-top: 22px;
  line-height: 1.8;
}
.settings-footer a { color: var(--accent-text-dark, var(--accent, #007aff)); text-decoration: none; }
.settings-footer a:hover { text-decoration: underline; }
.settings-footer-version {
  margin-top: 6px;
  color: rgba(170, 170, 170, 0.92);
  font-size: 10px;
  line-height: 1.5;
  letter-spacing: 0.01em;
}


.setting-group--advanced .setting-group--compact,
.theme-settings-grid .setting-group--compact {
  margin-top: 0;
}

.display-settings-grid,
.theme-settings-grid,
.font-settings-grid,
.advanced-settings-grid,
.alarm-sound-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: 10px;
  column-gap: 16px;
  align-items: start;
}

.display-setting-item,
.theme-setting-item,
.font-setting-item,
.advanced-setting-item,
.alarm-sound-main {
  min-width: 0;
}

.display-settings-grid .toggle-row,
.theme-settings-grid .toggle-row,
.font-settings-grid .toggle-row,
.setting-group--advanced .toggle-row,
.setting-group--advanced .opacity-row,
.theme-settings-grid .opacity-row,
.font-settings-grid .opacity-row {
  min-height: 48px;
}

.display-settings-grid .toggle-row,
.theme-settings-grid .toggle-row,
.font-settings-grid .toggle-row {
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.theme-settings-grid {
  margin-top: 12px;
}

.theme-settings-grid .setting-group--theme-select {
  margin-bottom: 0;
}

.theme-settings-grid .setting-group--theme-select .setting-label {
  margin-bottom: 10px;
}

.theme-settings-grid .opacity-row,
.font-settings-grid .opacity-row,
.setting-group--advanced .opacity-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  padding: 10px 0 14px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  overflow: visible;
}

.theme-settings-grid .opacity-controls,
.font-settings-grid .opacity-controls,
.setting-group--advanced .opacity-controls {
  width: 100%;
  min-width: 0;
  overflow: visible;
}

.theme-settings-grid .opacity-controls input[type="range"],
.font-settings-grid .opacity-controls input[type="range"],
.setting-group--advanced .opacity-controls input[type="range"] {
  width: 100%;
  min-width: 0;
  flex: 1 1 auto;
}

.theme-settings-grid .opacity-value,
.font-settings-grid .opacity-value,
.setting-group--advanced .opacity-value {
  color: var(--accent-text-dark, var(--accent, #007aff));
}

.theme-setting-item--full,
.advanced-setting-item--full,
.advanced-setting-item--wide,
.alarm-sound-grid .btn-preview-row {
  grid-column: 1 / -1;
}


.setting-group--alarm-sound .alarm-sound-grid {
  margin-top: 4px;
}

.setting-group--alarm-sound .alarm-sound-main {
  min-width: 0;
}

.setting-group--alarm-sound .btn-preview-row {
  margin-top: 0;
}

.setting-group--alarm-sound .btn-preview {
  min-height: 38px;
}

/* Browser notification toggle visibility is controlled by runtime host checks. */

.settings-footer {
  margin-top: 16px;
  line-height: 1.6;
}

.settings-footer-version {
  margin-top: 4px;
}


.theme-setting-item--full {
  min-width: 0;
}

.theme-setting-item--full .opacity-row {
  width: 100%;
}

.theme-setting-item--full .opacity-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.font-settings-grid {
  margin-top: 4px;
}

.font-setting-item--select,
.font-setting-item--zoom {
  min-width: 0;
}

.font-setting-item--zoom .opacity-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.font-setting-item--zoom .opacity-row {
  width: 100%;
}

.font-setting-item--zoom .toggle-label-text {
  display: block;
  margin-bottom: 2px;
}

@media (min-width: 560px) {
  .font-settings-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: end;
  }

  .font-setting-item--select select {
    height: 100%;
    min-height: 45px;
  }

  .font-setting-item--zoom .opacity-row {
    padding-top: 0;
  }
}

@media (max-width: 560px) {
  #settings-panel {
    padding: 14px;
  }

  .settings-card {
    width: 96%;
    padding: 24px 18px 24px 18px;
  }
}

@media (max-width: 420px) {
  #settings-panel {
    padding: 10px;
  }

  .settings-card {
    width: 100%;
    padding: 22px 16px 22px 16px;
  }

  .theme-grid {
    gap: 6px;
  }
}

@media (min-width: 500px) {
  .theme-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .theme-settings-grid {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: end;
  }

  .theme-setting-item--full {
    grid-column: auto;
  }
}

@media (min-width: 560px) {
  .display-settings-grid,
  .advanced-settings-grid,
  .alarm-sound-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .font-settings-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: end;
  }

  .alarm-sound-grid .btn-preview-row {
    grid-column: auto;
    margin-top: 0;
    align-self: end;
  }
}