styles.css

/* Root color palette */
:root {
  --bg: #eef2ff;
  --toolbar: rgba(255, 255, 255, 0.92);
  --toolbar-border: rgba(148, 163, 184, 0.24);
  --text: #0f172a;
  --muted: #475569;
  --card: rgba(255, 255, 255, 0.94);
  --card-border: rgba(226, 232, 240, 0.8);
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --low: #22c55e;
  --medium: #facc15;
  --high: #ef4444;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.16), transparent 28%),
    radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.14), transparent 24%),
    var(--bg);
}

button,
.color-swatch {
  transition: all 0.15s ease;
}

button {
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  background: #2563eb;
  color: white;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

button:active {
  transform: translateY(1px);
}

/* Toolbar */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--toolbar);
  border-bottom: 1px solid var(--toolbar-border);
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.controls label {
  font-size: 14px;
  color: var(--muted);
}

.help {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* Board */
.board {
  min-height: calc(100vh - 104px);
  padding: 24px;
  overflow: auto;
}

/* Note cards */
.note {
  position: absolute;
  min-width: 190px;
  min-height: 130px;
  padding: 16px 18px;
  background: var(--card);
  border-radius: 16px;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  cursor: grab;
  user-select: none;
  transition: box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.flying-note {
  pointer-events: none;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
  border-color: transparent;
}

.note:hover {
  transform: translateY(-1px);
}

.note:focus {
  outline: none;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
}

.note.editing {
  cursor: text;
}

.note.low {
  border-left: 5px solid var(--low);
}

.note.medium {
  border-left: 5px solid var(--medium);
}

.note.high {
  border-left: 5px solid var(--high);
}

.note .header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.note .title {
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #334155;
}

.note .actions {
  display: flex;
  gap: 6px;
}

.note button {
  background: transparent;
  border: none;
  color: #64748b;
  font-size: 14px;
}

.note button:hover {
  color: #0f172a;
}

.note button.complete {
  color: #16a34a;
}

.note button.complete:hover {
  color: #0f766e;
}

.animation-piece {
  position: absolute;
  pointer-events: none;
  opacity: 1;
  transform: translate(0, 0);
  animation: scatter 1.8s ease-out forwards;
}

@keyframes scatter {
  to {
    transform: translate(var(--dx), var(--dy)) rotate(var(--rotate));
    opacity: 0;
  }
}

.completion-cat {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 140px;
  height: 140px;
  z-index: 20;
  pointer-events: auto;
  cursor: pointer;
}

.completion-cat.active .cat-box {
  transform: scale(1.07);
}

.completion-cat:hover .cat-box {
  transform: scale(1.03);
}

.cat-box {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #e5e7eb 0%, #cbd5e1 100%);
  border: 2px solid #0f172a;
  border-radius: 32px;
  box-shadow: 0 28px 70px rgba(15, 23, 42, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.22s ease;
}

.completed-panel {
  position: fixed;
  bottom: 190px;
  right: 24px;
  width: min(360px, calc(100vw - 48px));
  max-height: 420px;
  background: rgba(15, 23, 42, 0.94);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  box-shadow: 0 24px 100px rgba(15, 23, 42, 0.25);
  padding: 18px;
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  overflow: hidden;
}

.completed-panel.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.completed-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.completed-panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.completed-panel-subtitle {
  margin: 6px 0 0;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.72);
}

.completed-list {
  max-height: 250px;
  overflow-y: auto;
  padding-right: 6px;
}

.completed-entry {
  display: grid;
  gap: 8px;
  padding: 14px 12px;
  margin-bottom: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.completed-entry.low {
  border-color: rgba(34, 197, 94, 0.24);
}

.completed-entry.medium {
  border-color: rgba(252, 211, 77, 0.24);
}

.completed-entry.high {
  border-color: rgba(239, 68, 68, 0.28);
}

.completed-text {
  font-size: 0.95rem;
  line-height: 1.4;
}

.completed-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.68);
}

.completed-empty {
  padding: 24px 14px;
  text-align: center;
  color: rgba(255, 255, 255, 0.72);
}

.completed-panel-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.completed-panel .secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: white;
}

.icon-button {
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px;
}

.icon-button:hover {
  color: white;
}

.cat-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cat-box::before,
.cat-box::after {
  content: '';
  position: absolute;
  top: -12px;
  width: 38px;
  height: 44px;
  background: #111827;
  border-radius: 50% 50% 0 0;
}

.cat-box::before,
.cat-box::after {
  display: none;
}

.cat-face {
  position: relative;
  width: 92px;
  height: 92px;
  background: #111827;
  border-radius: 50% 50% 45% 45%;
  border: 6px solid #ffffff;
  overflow: hidden;
}

.cat-face::before {
  content: '';
  position: absolute;
  top: 18px;
  left: 50%;
  width: 56px;
  height: 44px;
  background: #ffffff;
  border-radius: 50% 50% 40% 40%;
  transform: translateX(-50%);
}

.cat-face::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 50%;
  width: 16px;
  height: 10px;
  border-radius: 50%;
  background: #fbbf24;
  transform: translateX(-50%);
}

.cat-ear {
  position: absolute;
  top: -14px;
  width: 24px;
  height: 28px;
  background: #111827;
  border-radius: 20px 20px 0 0;
}

.cat-ear.left {
  left: 8px;
  transform: rotate(-20deg);
}

.cat-ear.right {
  right: 8px;
  transform: rotate(20deg);
}

.cat-eye {
  position: absolute;
  top: 30px;
  width: 12px;
  height: 12px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: inset 0 0 0 4px #111827;
}

.cat-eye.left {
  left: 18px;
}

.cat-eye.right {
  right: 18px;
}

.cat-nose {
  position: absolute;
  top: 46px;
  left: 50%;
  width: 10px;
  height: 10px;
  background: #111827;
  border-radius: 40% 40% 50% 50%;
  transform: translateX(-50%);
}

.cat-mouth {
  position: absolute;
  bottom: 16px;
  left: 50%;
  width: 22px;
  height: 10px;
  border-radius: 0 0 12px 12px;
  background: #111827;
  transform: translateX(-50%);
}

.cat-whisker {
  position: absolute;
  top: 48px;
  width: 30px;
  height: 2px;
  background: #111827;
}

.cat-whisker.left {
  left: 2px;
}

.cat-whisker.right {
  right: 2px;
}

.note .content {
  width: 100%;
  min-height: 48px;
  resize: none;
  border: none;
  outline: none;
  font-size: 15px;
  line-height: 1.6;
  overflow: hidden;
  background: transparent;
  color: inherit;
}

.color-swatch {
  width: 22px;
  height: 22px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
}

.color-swatch:hover,
.color-swatch.selected {
  transform: translateY(-1px);
  border-color: rgba(15, 23, 42, 0.2);
}

.color-swatch.low {
  background: var(--low);
}

.color-swatch.medium {
  background: var(--medium);
}

.color-swatch.high {
  background: var(--high);
}

.delete {
  color: #94a3b8;
}

.delete:hover {
  color: #0f172a;
}

@media (max-width: 700px) {
  .controls {
    justify-content: center;
  }

  .board {
    min-height: calc(100vh - 144px);
    padding: 18px;
  }

  .note {
    min-width: 160px;
    min-height: 110px;
  }
}

.note {
  opacity: 0;
  transform: translateY(6px);
  animation: note-enter 0.22s ease-out forwards;
}

@keyframes note-enter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.note .resize-handle {
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  border: 1px solid #cbd5e1;
  background: #e2e8f0;
  cursor: se-resize;
}

body.theme-dark {
  --bg: #020617;
  --toolbar: rgba(15, 23, 42, 0.92);
  --toolbar-border: rgba(71, 85, 105, 0.16);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --card: rgba(15, 23, 42, 0.95);
  --card-border: rgba(71, 85, 105, 0.35);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

body.theme-dark .note .title {
  color: #cbd5e1;
}

body.theme-dark .note button:hover,
body.theme-dark .delete:hover {
  color: #f8fafc;
}

body.theme-dark .note .content {
  color: #e5e7eb;
}

body.theme-dark .color-swatch {
  border-color: #1f2937;
}