:root {
  --bg1: #e3f0ff;
  --bg2: #ffe7f3;
  --clay: #eef1fb;
  --clay-soft: #f5f7fd;
  --text: #4b4a68;
  --text-soft: #8987a6;
  --accent: #7c83fd;
  --accent-dark: #5c62d6;
  --accent2: #7fd8c4;
  --danger: #ff8fa3;
  --danger-dark: #e8536b;
  --shadow-dark: rgba(163, 155, 207, 0.55);
  --shadow-light: rgba(255, 255, 255, 0.9);
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: radial-gradient(circle at 15% 0%, var(--bg1), transparent 55%),
    radial-gradient(circle at 100% 20%, var(--bg2), transparent 45%),
    #eef1fb;
  background-attachment: fixed;
  color: var(--text);
  margin: 0;
  padding: 32px 20px 60px;
  min-height: 100vh;
}

.container {
  max-width: 960px;
  margin: 0 auto;
}

h1 {
  margin: 0 0 28px;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-emoji {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 20px;
  background: var(--clay);
  box-shadow: 7px 7px 14px var(--shadow-dark), -7px -7px 14px var(--shadow-light);
  font-size: 1.5rem;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.dashboard-card {
  background: var(--clay);
  border-radius: 26px;
  padding: 24px 16px;
  text-align: center;
  box-shadow: 9px 9px 18px var(--shadow-dark), -9px -9px 18px var(--shadow-light);
  transition: transform 0.2s ease;
}

.dashboard-card:hover {
  transform: translateY(-3px);
}

.dashboard-icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.dashboard-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-dark);
}

.dashboard-label {
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 0.85rem;
  font-weight: 600;
}

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 720px) {
  .columns {
    grid-template-columns: 1fr;
  }
  .dashboard {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--clay);
  border-radius: 28px;
  padding: 26px;
  box-shadow: 10px 10px 22px var(--shadow-dark), -10px -10px 22px var(--shadow-light);
}

.panel h2 {
  margin: 0 0 18px;
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-emoji {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 14px;
  background: var(--clay-soft);
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
  font-size: 1rem;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.form input,
.form textarea {
  padding: 12px 16px;
  border: none;
  border-radius: 16px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--clay);
  box-shadow: inset 5px 5px 10px var(--shadow-dark), inset -5px -5px 10px var(--shadow-light);
  resize: vertical;
  outline: none;
  transition: box-shadow 0.2s ease;
}

.form input::placeholder,
.form textarea::placeholder {
  color: var(--text-soft);
}

.form input:focus,
.form textarea:focus {
  box-shadow: inset 6px 6px 12px var(--shadow-dark), inset -6px -6px 12px var(--shadow-light),
    0 0 0 3px rgba(124, 131, 253, 0.25);
}

.form button {
  align-self: flex-start;
  background: linear-gradient(145deg, #8b91ff, var(--accent));
  color: #fff;
  border: none;
  padding: 11px 26px;
  border-radius: 18px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  box-shadow: 6px 6px 14px var(--shadow-dark), -4px -4px 10px var(--shadow-light);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.form button:hover {
  transform: translateY(-2px);
}

.form button:active {
  transform: translateY(0);
  box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.25), inset -2px -2px 6px rgba(255, 255, 255, 0.2);
}

.list {
  list-style: none;
  margin: 0;
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 480px;
  overflow-y: auto;
}

.item {
  background: var(--clay-soft);
  border-radius: 20px;
  padding: 14px 16px;
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
}

.item-title {
  font-weight: 700;
  word-break: break-word;
}

.item-body {
  margin-top: 6px;
  white-space: pre-wrap;
  color: var(--text);
  opacity: 0.8;
  font-size: 0.9rem;
  word-break: break-word;
}

.item-meta {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-soft);
  font-weight: 600;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.task-item .task-main {
  flex: 1;
}

.task-item.completed {
  opacity: 0.75;
}

.task-item.completed .item-title {
  text-decoration: line-through;
  color: var(--text-soft);
}

.task-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  min-width: 24px;
  margin-top: 2px;
  border-radius: 8px;
  background: var(--clay);
  box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
  cursor: pointer;
  position: relative;
  transition: background 0.15s ease;
}

.task-checkbox:checked {
  background: linear-gradient(145deg, var(--accent2), #5ec2ab);
  box-shadow: 3px 3px 6px var(--shadow-dark), -2px -2px 5px var(--shadow-light);
}

.task-checkbox:checked::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
}

.delete-btn {
  background: var(--clay);
  border: none;
  color: var(--danger-dark);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 12px;
  margin-top: 8px;
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
  transition: transform 0.15s ease;
}

.delete-btn:hover {
  transform: translateY(-1px);
  background: linear-gradient(145deg, #ffb0bf, var(--danger));
  color: #fff;
}

.delete-btn:active {
  transform: translateY(0);
  box-shadow: inset 3px 3px 6px rgba(0, 0, 0, 0.2), inset -2px -2px 5px rgba(255, 255, 255, 0.2);
}

.empty {
  color: var(--text-soft);
  font-size: 0.9rem;
  text-align: center;
  padding: 12px 0;
}

.list::-webkit-scrollbar {
  width: 8px;
}

.list::-webkit-scrollbar-track {
  background: transparent;
}

.list::-webkit-scrollbar-thumb {
  background: var(--shadow-dark);
  border-radius: 8px;
}