* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1b1e;
  color: #e6e6e6;
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  user-select: none;
  color-scheme: dark;
}

#toolbar {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 20;
  display: flex;
  gap: 10px;
}

#toolbar button {
  background: #2a2c31;
  color: #e6e6e6;
  border: 1px solid #45484f;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 16px;
  cursor: pointer;
}

#toolbar button:hover {
  background: #35383e;
}

#addBubbleBtn {
  width: 38px;
  height: 38px;
  line-height: 1;
}

#canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: grab;
  background:
    radial-gradient(circle at center, rgba(255,255,255,0.03) 1px, transparent 1px) 0 0 / 32px 32px,
    #1a1b1e;
}

#canvas.panning {
  cursor: grabbing;
}

#world, #linksLayer {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  transform-origin: 0 0;
}

#linksLayer {
  overflow: visible;
  pointer-events: none;
}

.link-visible {
  stroke: var(--link-color);
  stroke-width: 2px;
  pointer-events: none;
  transition: stroke-width 0.1s ease;
}

.link-group.active .link-visible {
  stroke-width: 4px;
  filter: drop-shadow(0 0 4px var(--link-color));
}

.link-x {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.1s ease;
}

.link-group.active .link-x {
  opacity: 1;
  pointer-events: auto;
}

.link-x-bg {
  fill: #24262b;
  stroke: var(--link-color);
  stroke-width: 1.5px;
  cursor: pointer;
}

.link-x-label {
  fill: #e6e6e6;
  font-size: 13px;
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
  user-select: none;
}

.bubble {
  position: absolute;
  width: max-content;
  max-width: 340px;
  padding: 10px 16px;
  border-radius: 18px;
  border: 2px solid #888;
  background: #24262b;
  color: #e6e6e6;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: box-shadow 0.05s ease, border-color 0.3s ease;
}

.bubble:hover {
  background: #303237;
  box-shadow: 0 0 18px 1px var(--bubble-color);
}

.bubble.dragging {
  cursor: grabbing;
  transition: none;
}

.bubble.selected {
  cursor: default;
  min-width: 220px;
  z-index: 10;
}

.bubble-title-display {
  font-weight: 600;
  font-size: 15px;
  text-align: center;
  white-space: normal;
  overflow-wrap: break-word;
}

.bubble.done .bubble-title-display {
  color: #82858c;
  font-weight: 500;
}

.bubble-title-input {
  display: block;
  width: 100%;
  margin: 0 auto;
  text-align: center;
  background: transparent;
  border: none;
  outline: none;
  color: #e6e6e6;
  font-weight: 600;
  font-size: 15px;
  font-family: inherit;
}

.bubble-meta {
  font-size: 11px;
  color: #9a9da3;
  text-align: center;
  margin-top: 4px;
}

.bubble-description {
  width: 100%;
  margin-top: 8px;
  background: #1c1e22;
  border: 1px solid #3a3d43;
  border-radius: 8px;
  color: #e6e6e6;
  font-family: inherit;
  font-size: 13px;
  padding: 6px 8px;
  resize: none;
  min-height: 60px;
}

.bubble-description:focus,
.bubble-title-input:focus {
  outline: 1px solid #6a6d75;
  background: #303237;
}

.bubble-description-readonly {
  width: 100%;
  margin-top: 8px;
  background: #1c1e22;
  border: 1px solid #313339;
  border-radius: 8px;
  color: #82858c;
  font-family: inherit;
  font-size: 13px;
  padding: 6px 8px;
  white-space: pre-wrap;
  min-height: 40px;
}

.bubble-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  justify-content: center;
}

.bubble-actions button {
  flex: 1;
  border: 1px solid #45484f;
  border-radius: 6px;
  background: #2a2c31;
  color: #e6e6e6;
  font-size: 12px;
  padding: 5px 6px;
  cursor: pointer;
}

.bubble-actions button:hover {
  background: #35383e;
}

.bubble-actions .delete-btn:hover {
  background: #5a2a2a;
  border-color: #7a3a3a;
}

.bubble-actions .done-btn:hover {
  background: #2a4a34;
  border-color: #3a6a44;
}

.hidden {
  display: none !important;
}

#doneListOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.55);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

#doneListModal {
  position: relative;
  width: 420px;
  max-height: 70vh;
  overflow-y: auto;
  background: #24262b;
  border: 1px solid #3a3d43;
  border-radius: 12px;
  padding: 20px;
}

#doneListModal h2 {
  margin: 0 0 12px 0;
  font-size: 18px;
}

.close-btn {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  color: #e6e6e6;
  font-size: 20px;
  cursor: pointer;
}

#doneListItems {
  list-style: none;
  margin: 0;
  padding: 0;
}

.done-item {
  border-bottom: 1px solid #35383e;
  padding: 8px 0;
}

.done-month-group {
  list-style: none;
}

.done-month-divider {
  font-size: 14px;
  color: #6a6d75;
  padding: 10px 0 4px 0;
  border-bottom: 1px solid #2c2e33;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.done-month-divider:hover {
  color: #9a9da3;
}

.done-month-caret {
  font-size: 16px;
}

.done-month-items {
  list-style: none;
  margin: 0;
  padding: 0;
}

.done-item-title {
  cursor: pointer;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
}

.done-item-title:hover {
  color: #ffffff;
}

.done-item-details {
  margin-top: 8px;
  font-size: 12px;
  color: #c3c5ca;
}

.done-item-details textarea {
  width: 100%;
  background: #1c1e22;
  border: 1px solid #3a3d43;
  border-radius: 6px;
  color: #e6e6e6;
  font-family: inherit;
  font-size: 12px;
  padding: 6px 8px;
  min-height: 50px;
  resize: none;
}

.unmark-btn {
  margin-top: 6px;
  border: 1px solid #45484f;
  border-radius: 6px;
  background: #2a2c31;
  color: #e6e6e6;
  font-size: 12px;
  padding: 5px 10px;
  cursor: pointer;
}

.unmark-btn:hover {
  background: #35383e;
}

#settingsOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.55);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

#settingsModal {
  position: relative;
  width: 420px;
  max-height: 70vh;
  overflow-y: auto;
  background: #24262b;
  border: 1px solid #3a3d43;
  border-radius: 12px;
  padding: 20px;
}

#settingsModal h2 {
  margin: 0 0 12px 0;
  font-size: 18px;
}

/* Settings framework: generic row layout - reuse this for each new setting. */
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #35383e;
}

.settings-row:last-child {
  border-bottom: none;
}

.settings-row label {
  font-size: 14px;
  color: #e6e6e6;
}

.settings-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: #6a6d75;
  cursor: pointer;
}

.settings-row input[type="number"],
.settings-row select {
  background: #1c1e22;
  border: 1px solid #3a3d43;
  border-radius: 6px;
  color: #e6e6e6;
  font-family: inherit;
  font-size: 13px;
  padding: 5px 8px;
}

.settings-row input[type="number"] {
  width: 90px;
}

.settings-row select {
  cursor: pointer;
}

.settings-row select:hover {
  border-color: #45484f;
}

.settings-row input[type="number"]:focus,
.settings-row select:focus {
  outline: 1px solid #6a6d75;
}

.settings-row select option {
  background: #1c1e22;
  color: #e6e6e6;
}

.settings-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.settings-btn {
  flex: 1;
  border: 1px solid #45484f;
  border-radius: 6px;
  background: #2a2c31;
  color: #e6e6e6;
  font-size: 13px;
  padding: 8px 10px;
  cursor: pointer;
}

#saveBackupBtn:hover {
  background: #34363c;
}

#recallBackupBtn:hover {
  background: #5a2a2a;
  border-color: #7a3a3a;
}