/* ---------- CSS Custom Properties ---------- */
:root {
  --color-bg: #eef2f8;
  --color-surface: #f7f9ff;
  --color-primary: #5b6af0;
  --color-primary-hover: #4a56d4;
  --app-accent: #5b6af0;
  --app-accent-hover: #4a56d4;
  --color-text: #242c3b;
  --color-text-light: #7a84a0;
  --color-border: #d9ddec;
  --color-danger: #e5576c;
  --color-success: #2ecc71;
  --item-bg: #f6f8ff;
  --item-hover: #e9effe;
  --item-border: #d9ddec;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

body.dark-mode {
  --color-bg: #080d1a;
  --color-surface: #0f1628;
  --color-primary: #5b5bff;
  --color-primary-hover: #4550d8;
  --app-accent: #7c86ff;
  --app-accent-hover: #5c67e8;
  --color-text: #e8ebff;
  --color-text-light: #9aa0c8;
  --color-border: #1c2137;
  --color-danger: #ff7a7a;
  --color-success: #61df7a;
  --item-bg: #091028;
  --item-hover: #121e38;
  --item-border: #162043;
}

body[data-theme="blue"] {
  --app-accent: #4169E1;
  --app-accent-hover: #2f55c4;
}

body[data-theme="orange"] {
  --app-accent: #FF7F50;
  --app-accent-hover: #ff6a37;
}

body[data-theme="teal"] {
  --app-accent: #20B2AA;
  --app-accent-hover: #1b958f;
}

body[data-theme="purple"] {
  --app-accent: #9370DB;
  --app-accent-hover: #7c63c6;
}

body[data-theme="red"] {
  --app-accent: #FF6347;
  --app-accent-hover: #ff4731;
}


body[data-theme="blue"] {
  --app-accent: #4169E1;
  --app-accent-hover: #2f55c4;
}

body[data-theme="orange"] {
  --app-accent: #FF7F50;
  --app-accent-hover: #ff6a37;
}

body[data-theme="teal"] {
  --app-accent: #20B2AA;
  --app-accent-hover: #1b958f;
}

body[data-theme="purple"] {
  --app-accent: #9370DB;
  --app-accent-hover: #7c63c6;
}

body[data-theme="red"] {
  --app-accent: #FF6347;
  --app-accent-hover: #ff4731;
}


/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 2rem;
  line-height: 1.6;
  transition: var(--transition);
  overflow-x: hidden;
  overflow-y: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- App Container ---------- */
.app {
  width: 100%;
  max-width: 520px;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  position: relative;
  text-align: center;
}

header .mode {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
  transition: transform 0.2s ease, color 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

header .mode:hover {
  transform: scale(1.12);
}

header .mode:active {
  transform: scale(0.95);
}

header .mode i {
  transition: transform 0.4s ease;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--app-accent);
  margin: 0;
}


#date {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.theme-selector {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.theme-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.3s ease;
  animation: floatSubtle 3s ease-in-out infinite;
}

.theme-btn:nth-child(1) {
  animation: floatDelay1Subtle 3s ease-in-out infinite;
  animation-delay: 0s;
}

.theme-btn:nth-child(2) {
  animation: floatDelay2Subtle 3s ease-in-out infinite;
  animation-delay: 0.15s;
}

.theme-btn:nth-child(3) {
  animation: floatDelay1Subtle 3s ease-in-out infinite;
  animation-delay: 0.3s;
}

.theme-btn:nth-child(4) {
  animation: floatDelay2Subtle 3s ease-in-out infinite;
  animation-delay: 0.45s;
}

.theme-btn:nth-child(5) {
  animation: floatDelay1Subtle 3s ease-in-out infinite;
  animation-delay: 0.6s;
}

.theme-btn:hover {
  transform: scale(1.15);
  filter: brightness(1.1);
}

.theme-btn.active {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.date-time-display {
  display: flex;
  gap: 1rem;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

#date-display, #time-display {
  margin: 0;
}

/* ---------- Input ---------- */
.todo-input {
  display: flex;
  gap: 1rem;
  margin-top: 3%;
  flex-wrap: wrap;
  align-items: flex-start;
  width: 100%;
}

#task-input {
  flex: 2 1 280px;
  min-width: 0;
  width: 100%;
  padding: 1rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
  background: var(--color-surface);
  font-weight: 500;
  color: var(--color-text);
}

body.dark-mode #task-input {
  border-color: var(--color-border);
}

#task-input::placeholder {
  color: #999;
  font-weight: 400;
}

body.dark-mode #task-input::placeholder {
  color: #666;
}

#task-input:focus {
  border-color: var(--color-primary);
}

.datetime-inputs {
  display: flex;
  gap: 0.5rem;
  flex: 1 1 220px;
  min-width: 0;
  max-width: 100%;
  flex-wrap: wrap;
}

.datetime-inputs input {
  min-width: 0;
}

#date-input,
#time-input {
  flex: 1 1 110px;
  padding: 0.75rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
  background: var(--color-surface);
  color: var(--color-text);
}

body.dark-mode #date-input,
body.dark-mode #time-input {
  border-color: var(--color-border);
}

#date-input:focus,
#time-input:focus {
  border-color: var(--app-accent);
}

#add-task {
  background: var(--app-accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  white-space: nowrap;
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

#add-task:hover,
#add-task:focus-visible {
  background: var(--app-accent-hover);
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

body.dark-mode .delete-btn:hover,
body.dark-mode .delete-btn:focus-visible {
  background: rgba(255, 107, 107, 0.16);
  color: var(--color-danger);
}

#add-task:active {
  transform: scale(0.95);
}

.agent-input {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

#agent-input {
  flex: 1 1 260px;
  min-width: 0;
  padding: 1rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
  background: var(--color-surface);
  font-weight: 500;
  color: var(--color-text);
}

body.dark-mode #agent-input {
  border-color: var(--color-border);
}

#agent-input::placeholder {
  color: #999;
  font-weight: 400;
}

body.dark-mode #agent-input::placeholder {
  color: #666;
}

#agent-input:focus {
  border-color: var(--color-primary);
}

#agent-btn {
  background: var(--app-accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  white-space: nowrap;
  flex-shrink: 0;
}

#agent-btn:hover,
#agent-btn:focus-visible {
  background: var(--app-accent-hover);
  transform: scale(1.02);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.18);
}

#agent-btn:active {
  transform: scale(0.98);
}

.agent-response {
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.85rem 1rem;
  background: var(--item-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  color: var(--color-text-light);
  font-size: 0.9rem;
  white-space: pre-line;
  min-height: 2.5rem;
}

/* ---------- Filters ---------- */
.filters {
  display: flex;
  gap: 0.5rem;
  background: transparent;
  border-radius: 999px;
  padding: 0.5rem 0;
  justify-content: center;
  margin: 1rem 0;
}

.filter {
  flex: 0 1 auto;
  text-align: center;
  padding: 0.5rem 1.5rem;
  border: none;
  background: transparent;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #999;
  cursor: pointer;
  transition: all var(--transition), color 0.3s ease;
  position: relative;
}

.filter::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #5B5BFF;
  transition: width 0.3s ease;
}

.filter.active {
  background: transparent;
  color: var(--color-text);
  border-bottom: 2px solid var(--app-accent);
  box-shadow: none;
}

.filter.active::after {
  width: 100%;
}

.filter:hover:not(.active) {
  color: var(--color-text-light);
  transform: translateY(-2px);
}

/* ---------- Todo List ---------- */
.todos-container {
  min-height: 150px;
}

#todos-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: var(--color-text-light);
  padding: 2rem 0;
}

.empty-state i {
  font-size: 3rem;
  opacity: 0.5;
  color: #999;
}

.empty-state h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.empty-state p {
  font-size: 0.9rem;
  color: #999;
  margin: 0;
}

.hidden {
  display: none !important;
}

/* ---------- Todo Item ---------- */
.todo-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--item-bg);
  border: 1px solid var(--item-border);
  border-radius: var(--radius-sm);
  transition: background var(--transition), box-shadow var(--transition), transform 0.3s ease;
  animation: fadeSlide 0.2s ease;
}

.todo-item:hover {
  background: var(--item-hover);
  transform: translateX(4px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.todo-item.completed .todo-item-text {
  text-decoration: line-through;
  color: var(--color-text-light);
  opacity: 0.7;
}

.todo-priority-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.5rem;
  border: 1px solid rgba(255,255,255,0.4);
}

.todo-priority-dot.low {
  background: #FF6B6B;
}

.todo-priority-dot.medium {
  background: #FFB84D;
}

.todo-priority-dot.high {
  background: #51CF66;
}

.todo-item.priority-low {
  border-left: 4px solid #FF6B6B;
}

.todo-item.priority-medium {
  border-left: 4px solid #FFB84D;
}

.todo-item.priority-high {
  border-left: 4px solid #51CF66;
}

/* Custom checkbox */
.checkbox-container {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  width: 1.2rem;
  height: 1.2rem;
  cursor: pointer;
}

.checkmark {
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  transform-origin: center;
}

.checkbox-container input:checked ~ .checkmark {
  background: var(--color-success);
  border-color: var(--color-success);
  animation: pulse 0.4s ease-out;
}

.checkmark::after {
  content: '';
  display: none;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -1px;
  animation: fadeSlide 0.3s ease;
}

.checkbox-container input:checked ~ .checkmark::after {
  display: block;
}

.checkbox-container input:focus-visible + .checkmark {
  box-shadow: 0 0 0 3px rgba(91, 106, 240, 0.3);
}

.todo-item-text {
  flex: 1;
  word-break: break-word;
  font-size: 1rem;
  transition: color var(--transition);
}

/* Edition mode */
.todo-item.editing .todo-item-text {
  display: none;
}

.edit-input {
  flex: 1;
  padding: 0.3rem 0.5rem;
  font-size: 1rem;
  border: 2px solid var(--color-primary);
  border-radius: 6px;
  outline: none;
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--color-danger);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 50%;
  transition: background var(--transition), transform var(--transition), color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delete-btn:hover,
.delete-btn:focus-visible {
  background: #ffe0e4;
  transform: scale(1.15) rotate(90deg);
  color: #ff3d3d;
}

/* ---------- Footer ---------- */
footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  gap: 1rem;
}

#clear-completed {
  background: none;
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition);
}

#clear-completed:hover,
#clear-completed:focus-visible {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

/* ---------- Animations ---------- */
@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes spinSlow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes floatSubtle {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes floatDelay1Subtle {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes floatDelay2Subtle {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-7px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  body {
    padding: 1rem;
  }

  .app {
    padding: 1.25rem;
    gap: 1rem;
    max-width: 100%;
    width: 100%;
  }

  header {
    gap: 0.75rem;
  }

  .date-time-display {
    flex-direction: column;
    gap: 0.35rem;
  }

  .theme-selector {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }

  .todo-input {
    flex-direction: column;
    align-items: stretch;
  }

  .datetime-inputs {
    width: 100%;
    flex-direction: column;
  }

  #add-task {
    width: 100%;
  }

  .filters {
    flex-wrap: wrap;
    justify-content: center;
  }

  footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    text-align: center;
  }

  .priority-selector {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  .priority-options {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.6rem;
  }

  .date-time-display {
    font-size: 0.85rem;
  }

  .theme-btn {
    width: 26px;
    height: 26px;
  }

  #add-task {
    padding: 0.85rem 1rem;
  }
}

/* ---------- Priority Selector ---------- */
.priority-selector-container {
  display: flex;
  justify-content: center;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #E0E0E0;
}

.priority-selector {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.priority-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.priority-options {
  display: flex;
  gap: 0.5rem;
}

.priority-option {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.3s ease;
  animation: floatSubtle 3s ease-in-out infinite;
}

.priority-option[data-priority="low"] {
  background: #FF6B6B;
  animation-delay: 0s;
}

.priority-option[data-priority="medium"] {
  background: #FFB84D;
  animation-delay: 0.2s;
}

.priority-option[data-priority="high"] {
  background: #51CF66;
  animation-delay: 0.4s;
}

.priority-option:hover {
  transform: scale(1.2);
  filter: brightness(1.15);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.priority-option.active {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
  transform: scale(1.15);
}

/* responsive */

.todo-item {
  flex-wrap: wrap;
}

.todo-item-text {
  min-width: 0;
}

@media (max-width: 680px) {
  .app {
    padding: 1.2rem;
  }

  .todo-input {
    flex-direction: column;
    align-items: stretch;
  }

  .datetime-inputs {
    width: 100%;
    flex-direction: column;
  }

  .datetime-inputs input {
    width: 100%;
  }

  #add-task {
    width: 100%;
    padding: 0.95rem 1rem;
  }

  .filters {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .filters .filter {
    flex: 1 1 calc(33.333% - 0.5rem);
    min-width: 120px;
  }

  .priority-selector-container,
  footer {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  footer {
    align-items: center;
  }

  footer p {
    width: 100%;
  }
}

@media (max-width: 480px) {
  body {
    padding: 1rem;
  }

  .app {
    padding: 1rem;
    border-radius: 14px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .theme-selector {
    gap: 0.5rem;
  }

  .date-time-display {
    flex-direction: column;
    gap: 0.25rem;
  }

  .theme-btn {
    width: 28px;
    height: 28px;
  }
}

/* ---------- NEW FEATURES STYLES ---------- */

/* Search Container */
.search-container {
  position: relative;
  width: 100%;
}

#search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
  background: var(--color-surface);
  color: var(--color-text);
}

#search-input:focus {
  border-color: var(--app-accent);
  box-shadow: 0 0 0 3px rgba(91, 106, 240, 0.1);
}

.search-container i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-light);
  pointer-events: none;
}

/* Statistics Dashboard */
.stats-dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  background: linear-gradient(135deg, rgba(91, 106, 240, 0.05), rgba(151, 112, 219, 0.05));
  padding: 1rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--app-accent);
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--app-accent), #9370DB);
  transition: width 0.3s ease;
}

/* Categories */
.category-selector {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 0.75rem;
  background: var(--item-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

#new-category {
  flex: 1;
  min-width: 150px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.85rem;
  outline: none;
  background: var(--color-surface);
  color: var(--color-text);
}

#new-category:focus {
  border-color: var(--app-accent);
}

#add-category-btn {
  padding: 0.5rem 0.75rem;
  background: var(--app-accent);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition);
}

#add-category-btn:hover {
  background: var(--app-accent-hover);
}

.categories-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  width: 100%;
}

.category-item {
  padding: 0.4rem 0.8rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
}

.category-item:hover {
  border-color: var(--app-accent);
  color: var(--app-accent);
}

.category-item.active {
  background: var(--app-accent);
  color: white;
  border-color: var(--app-accent);
}

.remove-category {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 1rem;
  padding: 0;
  margin-left: 0.2rem;
  opacity: 0.7;
  transition: opacity var(--transition);
}

.remove-category:hover {
  opacity: 1;
}

/* Todo Item Enhancements */
.todo-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.todo-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.todo-category {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background: var(--app-accent);
  color: white;
  font-size: 0.65rem;
  border-radius: 3px;
  font-weight: 600;
}

.todo-recurring {
  display: inline-block;
  color: var(--app-accent);
  font-size: 0.75rem;
}

.todo-item-meta {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.todo-notes {
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
  padding: 0.3rem 0.5rem;
  background: rgba(91, 106, 240, 0.05);
  border-radius: 4px;
  line-height: 1.3;
}

.subtasks-container {
  padding: 0.5rem 0;
  border-top: 1px solid var(--color-border);
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.subtask {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  padding: 0.2rem 0.5rem;
  opacity: 0.9;
}

.subtask.completed {
  opacity: 0.6;
  text-decoration: line-through;
}

.subtask input[type="checkbox"] {
  cursor: pointer;
  width: 14px;
  height: 14px;
}

.todo-actions {
  display: flex;
  gap: 0.3rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.todo-item:hover .todo-actions {
  opacity: 1;
}

.edit-notes-btn,
.add-subtask-btn {
  background: transparent;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.3rem;
  border-radius: 4px;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.edit-notes-btn:hover,
.add-subtask-btn:hover {
  background: rgba(91, 106, 240, 0.1);
  color: var(--app-accent);
}

/* Drag and Drop */
.todo-item.dragging {
  opacity: 0.5;
  transform: scale(0.98);
}

.todo-item[draggable="true"] {
  cursor: move;
}

/* Footer buttons */
.footer-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.footer-buttons button {
  flex: 1;
  min-width: 100px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-border);
  background: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.footer-buttons button:hover {
  background: var(--app-accent);
  color: white;
  border-color: var(--app-accent);
}

#export-btn i,
#import-btn i {
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  .stats-dashboard {
    grid-template-columns: 1fr;
  }

  .category-selector {
    flex-direction: column;
    align-items: stretch;
  }

  #new-category {
    width: 100%;
  }

  .categories-list {
    justify-content: center;
  }

  .todo-actions {
    opacity: 1;
  }

  .footer-buttons {
    justify-content: space-around;
  }

  .footer-buttons button {
    flex: 0 1 auto;
  }
}