:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e0e0e0;
  --text-primary: #333333;
  --text-secondary: #666666;
  --border-color: #dddddd;
  --accent-color: #007bff;
  --accent-hover: #0056b3;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-tertiary: #404040;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --border-color: #555555;
  --accent-color: #4a9eff;
  --accent-hover: #357abd;
  --success-color: #4caf50;
  --danger-color: #f44336;
  --shadow: rgba(0, 0, 0, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  width: 100%;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

.hidden {
  display: none !important;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background-color: var(--bg-primary);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px var(--shadow);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-sizing: border-box;
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator,
.form-group input[type="time"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s ease, filter 0.2s ease;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator:hover,
.form-group input[type="time"]::-webkit-calendar-picker-indicator:hover {
  opacity: 1;
}

[data-theme="light"] .form-group input[type="date"]::-webkit-calendar-picker-indicator,
[data-theme="light"] .form-group input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(0);
}

[data-theme="dark"] .form-group input[type="date"]::-webkit-calendar-picker-indicator,
[data-theme="dark"] .form-group input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(1.2);
}

.form-group input[type="date"]::-moz-calendar-picker-indicator,
.form-group input[type="time"]::-moz-calendar-picker-indicator {
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.form-group input[type="date"]::-moz-calendar-picker-indicator:hover,
.form-group input[type="time"]::-moz-calendar-picker-indicator:hover {
  opacity: 1;
}

[data-theme="dark"] .form-group input[type="date"]::-moz-calendar-picker-indicator,
[data-theme="dark"] .form-group input[type="time"]::-moz-calendar-picker-indicator {
  filter: invert(1) brightness(1.2);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 12px;
  padding-right: 2.5rem;
}

[data-theme="dark"] .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ccc' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

.form-group.checkbox-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.form-group.checkbox-group input[type="checkbox"] {
  width: auto;
  margin: 0;
  padding: 0;
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--accent-color);
}

.form-group.checkbox-group label {
  margin: 0;
  cursor: pointer;
  user-select: none;
}

.tags-container {
  position: relative;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  padding: 0.5rem;
  min-height: 60px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.selected-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  background-color: var(--accent-color);
  color: white;
  border-radius: 16px;
  font-size: 0.875rem;
  font-weight: 500;
}

.tag-chip .tag-remove {
  cursor: pointer;
  font-weight: bold;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.tag-chip .tag-remove:hover {
  opacity: 1;
}

.tag-input {
  flex: 1;
  min-width: 150px;
  border: none;
  outline: none;
  background-color: transparent;
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.25rem;
}

.tag-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  margin-top: 0.25rem;
  max-height: 200px;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tag-suggestion {
  padding: 0.75rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
  color: var(--text-primary);
}

.tag-suggestion:hover,
.tag-suggestion.highlighted {
  background-color: var(--bg-tertiary);
}

.tag-suggestion:last-child {
  border-bottom: none;
}

.tag-suggestion.create-new-tag {
  color: var(--accent-color);
  font-style: italic;
}

.tag-suggestion.empty-message {
  color: var(--text-secondary);
  cursor: default;
  font-style: italic;
}

.description-container {
  position: relative;
}

.description-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  margin-top: 0.25rem;
  max-height: 200px;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.description-suggestion {
  padding: 0.75rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
  color: var(--text-primary);
}

.description-suggestion:hover,
.description-suggestion.highlighted {
  background-color: var(--bg-tertiary);
}

.description-suggestion:last-child {
  border-bottom: none;
}

.description-suggestion.empty-message {
  color: var(--text-secondary);
  cursor: default;
  font-style: italic;
}

.project-container {
  position: relative;
}

#entryProjectInput {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
}

.project-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  margin-top: 0.25rem;
  max-height: 200px;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.project-suggestion {
  padding: 0.75rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
  color: var(--text-primary);
}

.project-suggestion:hover,
.project-suggestion.highlighted {
  background-color: var(--bg-tertiary);
}

.project-suggestion:last-child {
  border-bottom: none;
}

.project-suggestion.empty-message {
  color: var(--text-secondary);
  cursor: default;
  font-style: italic;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-color);
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.1s ease;
}

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

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--accent-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background-color: #c82333;
}

.btn-nav {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-nav:hover {
  background-color: var(--bg-tertiary);
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.error-message {
  color: var(--danger-color);
  margin-top: 1rem;
  display: none;
}

.error-message.show {
  display: block;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

.header {
  background-color: var(--bg-secondary);
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  box-sizing: border-box;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 1rem;
}

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

.header-title {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.menu-toggle-line {
  width: 2rem;
  height: 3px;
  background-color: var(--text-primary);
  border-radius: 10px;
  transition: all 0.3s linear;
  transform-origin: 1px;
}

.menu-toggle.active .menu-toggle-line:first-child {
  transform: rotate(45deg);
}

.menu-toggle.active .menu-toggle-line:nth-child(2) {
  opacity: 0;
  transform: translateX(20px);
}

.menu-toggle.active .menu-toggle-line:nth-child(3) {
  transform: rotate(-45deg);
}

.main-nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-btn:hover {
  background-color: var(--bg-primary);
  transform: translateY(-1px);
}

.nav-btn:active {
  transform: translateY(0);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
}

.nav-icon-theme {
  stroke-width: 2;
}

.nav-text {
  display: inline;
}

@media (max-width: 768px) {
  .nav-text {
    display: inline;
  }
}

.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
  min-width: 0;
}

.calendar-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-nav {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

.calendar-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: var(--bg-secondary);
  border-radius: 8px;
}

.calendar-controls-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.calendar-controls-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.calendar-controls-right {
  display: flex;
  align-items: center;
}

.calendar-controls .btn-nav {
  flex: 0 0 auto;
}

.btn-today {
  flex: 0 0 auto;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
}

.calendar-controls-bottom .btn-primary {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
}

.period-display {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
  text-align: center;
  flex: 1;
  min-width: 300px;
}

.calendar-wrapper {
  min-width: min-content;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
  min-width: min-content;
}

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1rem;
  margin-bottom: 0.5rem;
  min-width: min-content;
}

.day-name {
  text-align: center;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.5rem;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.calendar-container {
  margin-bottom: 2rem;
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.calendar-wrapper {
  min-width: min-content;
}

.entries-table-section {
  margin-bottom: 2rem;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.table-header h3 {
  margin: 0;
  color: var(--text-primary);
}

.table-container {
  overflow-x: auto;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.entries-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-primary);
}

.entries-table thead {
  background-color: var(--bg-tertiary);
}

.entries-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-color);
}

.entries-table th:nth-child(3),
.entries-table th:nth-child(4),
.entries-table th:nth-child(5) {
  text-align: right;
}

.entries-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.entries-table td:nth-child(3),
.entries-table td:nth-child(4),
.entries-table td:nth-child(5) {
  text-align: right;
}

.entries-table tbody tr.entry-row {
  background-color: var(--bg-primary);
}

.entries-table tbody tr.entry-row.alt-day {
  background-color: var(--bg-secondary);
}

.entries-table tbody tr.entry-row:hover {
  background-color: var(--bg-tertiary);
}

.entries-table tbody tr.entry-row .editable-cell {
  cursor: text;
  position: relative;
}

.entries-table tbody tr.entry-row .editable-cell:hover {
  background-color: var(--bg-tertiary);
}

.table-edit-controls {
  display: flex;
  gap: 0.5rem;
}

.table-edit-controls.hidden {
  display: none;
}

.editable-cell {
  position: relative;
  cursor: text;
}

.editable-cell .cell-display {
  display: inline-block;
  width: 100%;
  min-height: 1.5rem;
  padding: 0.25rem;
}

.editable-cell .cell-input {
  width: 100%;
  padding: 0.5rem;
  border: 2px solid var(--accent-color);
  border-radius: 4px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: inherit;
  font-family: inherit;
}

.editable-cell .cell-display[style*="color: var(--error-color"] {
  color: #ff4444 !important;
}

.entries-table tfoot {
  background-color: var(--bg-tertiary);
  font-weight: 600;
}

.entries-table tfoot td {
  border-top: 2px solid var(--border-color);
  border-bottom: none;
}

.entries-table tfoot td:last-child {
  text-align: right;
}

.entries-table .empty-row td {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-style: italic;
}

.day-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.day-card:hover {
  background-color: var(--bg-tertiary);
  transform: translateY(-2px);
  box-shadow: 0 4px 6px var(--shadow);
}

.day-card.today {
  border: 2px solid var(--accent-color);
}

.day-card.other-month {
  opacity: 0.5;
}

.day-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.day-number {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.day-total {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.entries-list {
  margin-top: 0.5rem;
  flex: 1;
  overflow-y: auto;
  max-height: none;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.entries-list::-webkit-scrollbar {
  width: 6px;
}

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

.entries-list::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 3px;
}

.entries-list::-webkit-scrollbar-thumb:hover {
  background-color: var(--text-secondary);
}

.entries-list:empty::after {
  content: 'Click to add time entry';
  display: block;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.75rem;
  padding: 0.5rem;
  font-style: italic;
}

.entry-item {
  background-color: var(--bg-primary);
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
  font-size: 0.875rem;
  border-left: 3px solid var(--accent-color);
}

.entry-description {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.entry-time {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.summary-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
  width: 100%;
}

.summary-section-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.5rem;
}

.summary-section-inner {
  min-width: min-content;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.summary-card {
  background-color: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.summary-card h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-card p {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-color);
  text-align: right;
  margin: 0;
  line-height: 1.2;
}

#projectTotals {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 500px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

#projectTotals::-webkit-scrollbar {
  width: 6px;
}

#projectTotals::-webkit-scrollbar-track {
  background: var(--bg-primary);
  border-radius: 3px;
}

#projectTotals::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

#projectTotals::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

.project-total-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background-color: var(--bg-primary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  transition: background-color 0.2s ease;
}

.project-total-item:hover {
  background-color: var(--bg-tertiary);
}

.project-name {
  color: var(--text-primary);
  flex: 1;
  min-width: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.4;
  font-size: 0.95rem;
}

.project-time {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1rem;
  text-align: right;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: fit-content;
}

@media (max-width: 1200px) and (min-width: 1025px) {
  .calendar-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }

  .calendar-wrapper {
    min-width: 900px;
  }

  .calendar-header {
    gap: 0.875rem;
  }

  .calendar {
    gap: 0.875rem;
  }

  .calendar-skeleton {
    gap: 0.875rem;
    min-width: 900px;
  }

  .day-card {
    min-height: 160px;
    padding: 0.875rem;
  }

  .entries-list {
    max-height: 350px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .calendar-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }

  .calendar-wrapper {
    min-width: 750px;
  }

  .calendar-header {
    gap: 0.625rem;
    font-size: 0.8125rem;
  }

  .calendar {
    gap: 0.625rem;
  }

  .calendar-skeleton {
    gap: 0.625rem;
    min-width: 750px;
  }

  .day-card {
    min-height: 150px;
    max-height: 380px;
    padding: 0.625rem;
    font-size: 0.875rem;
  }

  .day-number {
    font-size: 1.25rem;
  }

  .day-name-small {
    font-size: 0.6875rem;
  }

  .full-date {
    font-size: 0.625rem;
  }

  .day-total {
    font-size: 0.8125rem;
  }

  .entry-item {
    padding: 0.5rem;
    margin-bottom: 0.375rem;
  }

  .entry-description {
    font-size: 0.8125rem;
    margin-bottom: 0.125rem;
  }

  .entry-time {
    font-size: 0.6875rem;
  }

  .entries-list {
    max-height: 280px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 1;
  }

  .summary-section {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0.75rem;
  }

  .header-title {
    font-size: 1.25rem;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0.5rem;
    min-width: 200px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow);
  }

  .main-nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-btn {
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem 1rem;
  }

  .calendar-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }

  .calendar-wrapper {
    min-width: 700px;
  }

  .calendar-header {
    gap: 0.5rem;
    font-size: 0.75rem;
    padding: 0.25rem;
  }

  .calendar {
    gap: 0.5rem;
  }

  .calendar-skeleton {
    gap: 0.5rem;
    min-width: 700px;
  }

  .day-card {
    min-height: 200px;
    max-height: 400px;
    padding: 0.5rem;
    font-size: 0.8125rem;
    overflow: hidden;
  }

  .day-number {
    font-size: 1.125rem;
  }

  .day-name-small {
    font-size: 0.625rem;
  }

  .full-date {
    font-size: 0.5625rem;
  }

  .day-total {
    font-size: 0.75rem;
  }

  .entry-item {
    padding: 0.375rem;
    margin-bottom: 0.25rem;
  }

  .entry-description {
    font-size: 0.75rem;
    margin-bottom: 0.125rem;
  }

  .entry-time {
    font-size: 0.625rem;
  }

  .entries-list {
    max-height: 250px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 1;
  }

  .calendar-controls {
    gap: 0.75rem;
    padding: 0.875rem;
    margin-bottom: 1.25rem;
  }

  .calendar-controls-top {
    flex-direction: column;
    gap: 0.625rem;
  }

  .calendar-controls-bottom {
    flex-direction: column;
    gap: 0.625rem;
  }

  .calendar-controls-right {
    width: 100%;
  }

  .period-display {
    width: 100%;
    text-align: center;
    font-size: 0.9375rem;
    min-width: unset;
  }

  .calendar-controls-top>.btn-nav:first-child {
    width: 100%;
  }

  .calendar-controls-top>.btn-nav:last-child {
    width: 100%;
  }

  .btn-nav {
    padding: 0.5rem 0.625rem;
    font-size: 0.8125rem;
  }

  .btn-today {
    width: 100%;
  }

  .btn-primary {
    width: 100%;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }

  .main-content {
    padding: 1rem;
    width: 100%;
    max-width: 100vw;
    margin: 0;
  }

  .summary-section-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }

  .summary-section {
    grid-template-columns: repeat(2, minmax(280px, 1fr));
    gap: 1rem;
    width: 100%;
    margin-top: 1.5rem;
    min-width: 600px;
  }

  .summary-card {
    width: 100%;
    padding: 1.25rem;
  }

  .summary-card h3 {
    font-size: 1rem;
    margin-bottom: 0.875rem;
  }

  .summary-card p {
    font-size: 1.75rem;
  }

  #projectTotals {
    max-height: 400px;
    gap: 0.625rem;
  }

  .project-total-item {
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
  }

  .project-name {
    font-size: 0.875rem;
  }

  .project-time {
    font-size: 0.9375rem;
  }

  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .entries-table {
    min-width: 800px;
  }

  .modal-content {
    width: 95%;
    max-width: 95%;
    padding: 1.25rem;
    max-height: 95vh;
  }

  .modal-content h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
  }

  .form-group {
    margin-bottom: 0.875rem;
  }

  .form-group label {
    font-size: 0.875rem;
    margin-bottom: 0.375rem;
  }

  .form-group input,
  .form-group select {
    padding: 0.625rem;
    font-size: 0.9375rem;
  }

  .form-actions {
    gap: 0.75rem;
    flex-wrap: wrap;
  }

  .form-actions .btn {
    flex: 1;
    min-width: 120px;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }
}

.profile-modal,
.reports-modal {
  max-width: 1200px;
  width: 95%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

@media (max-width: 768px) {

  .profile-modal,
  .reports-modal {
    width: 98%;
    max-width: 98%;
    max-height: 95vh;
    padding: 1rem;
  }

  .reports-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
  }

  .reports-controls {
    flex-direction: column;
    width: 100%;
    gap: 0.5rem;
  }

  .reports-period-display {
    font-size: 0.875rem;
    min-width: unset;
    width: 100%;
    text-align: center;
  }

  .reports-controls .btn-nav {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
  }

  .reports-content {
    min-height: 300px;
  }

  .reports-data {
    gap: 1.25rem;
  }

  .report-section {
    padding: 1rem;
  }

  .report-section h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
  }

  .report-summary {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .summary-item {
    padding: 1rem;
  }

  .summary-label {
    font-size: 0.8125rem;
  }

  .summary-value {
    font-size: 1.25rem;
  }

  .summary-description {
    font-size: 0.75rem;
  }

  .section-description {
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
  }

  .report-table {
    font-size: 0.8125rem;
    margin-top: 0.75rem;
  }

  .report-table th,
  .report-table td {
    padding: 0.5rem 0.375rem;
  }

  .profile-content {
    gap: 1rem;
  }

  .profile-menu {
    min-width: 100%;
    gap: 0.375rem;
  }

  .menu-item {
    padding: 0.625rem 0.875rem;
    font-size: 0.8125rem;
  }

  .profile-data {
    min-height: 300px;
    font-size: 0.8125rem;
  }

  .profile-data pre {
    font-size: 0.75rem;
    padding: 0.75rem;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {

  .profile-modal,
  .reports-modal {
    width: 100%;
    max-width: 100%;
    padding: 0.75rem;
    max-height: 100vh;
    border-radius: 0;
  }

  .reports-header {
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
  }

  .reports-period-display {
    font-size: 0.8125rem;
  }

  .reports-controls .btn-nav {
    padding: 0.4375rem 0.625rem;
    font-size: 0.75rem;
  }

  .report-section {
    padding: 0.75rem;
  }

  .report-section h3 {
    font-size: 0.9375rem;
    margin-bottom: 0.625rem;
  }

  .summary-item {
    padding: 0.875rem;
  }

  .summary-value {
    font-size: 1.125rem;
  }

  .report-table {
    font-size: 0.75rem;
  }

  .report-table th,
  .report-table td {
    padding: 0.4375rem 0.25rem;
  }

  .profile-menu {
    gap: 0.25rem;
  }

  .menu-item {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }

  .profile-data {
    font-size: 0.75rem;
  }

  .profile-data pre {
    font-size: 0.6875rem;
    padding: 0.625rem;
  }
}

.reports-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.reports-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.reports-period-display {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-color);
  min-width: 200px;
  text-align: center;
}

.reports-controls .btn-nav {
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
}

.reports-content {
  flex: 1;
  overflow-y: auto;
  min-height: 400px;
}

.reports-data {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.report-section {
  background-color: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.report-section h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
}

.report-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.summary-item {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  background-color: var(--bg-primary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  gap: 0.5rem;
}

.summary-label {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-value {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1.2;
}

.summary-description {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-style: italic;
  margin-top: 0.25rem;
}

.section-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  font-style: italic;
}

.report-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.report-table th {
  padding: 0.75rem;
  text-align: left;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
}

.report-table th:last-child {
  text-align: right;
}

.report-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.report-table tbody tr:hover {
  background-color: var(--bg-tertiary);
}

.report-table tbody tr:last-child td {
  border-bottom: none;
}

.report-table tfoot {
  background-color: var(--bg-tertiary);
}

.report-table tfoot td {
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-top: 2px solid var(--border-color);
  color: var(--text-primary);
}

.percentage-cell {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.report-section h3 {
  margin-bottom: 0.5rem;
}

.profile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.profile-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
}

.profile-content {
  display: flex;
  gap: 2rem;
  flex: 1;
  overflow: hidden;
}

.profile-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 200px;
  max-height: 100%;
  overflow-y: auto;
}

.menu-item {
  padding: 0.75rem 1rem;
  text-align: left;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.menu-item:hover {
  background-color: var(--bg-tertiary);
}

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

.profile-data {
  flex: 1;
  overflow-y: auto;
  min-height: 400px;
}

.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.data-content {
  background-color: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.json-display {
  background-color: var(--bg-primary);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.data-summary {
  margin-bottom: 1rem;
  padding: 0.75rem;
  background-color: var(--bg-tertiary);
  border-radius: 4px;
  font-weight: 600;
  color: var(--text-primary);
}

.no-data {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-style: italic;
}

.profile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

.profile-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
}

@media (max-width: 768px) {
  .profile-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
  }

  .profile-header h2 {
    font-size: 1.25rem;
  }

  .profile-header .btn {
    width: 100%;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
  }

  .profile-content {
    flex-direction: column;
    gap: 1rem;
  }

  .profile-menu {
    flex-direction: row;
    overflow-x: auto;
    min-width: 100%;
    gap: 0.375rem;
    padding-bottom: 0.5rem;
  }

  .menu-item {
    white-space: nowrap;
    padding: 0.625rem 0.875rem;
    font-size: 0.8125rem;
  }

  .data-content {
    padding: 1rem;
  }

  .json-display {
    font-size: 0.75rem;
    padding: 0.75rem;
    line-height: 1.5;
  }

  .data-summary {
    padding: 0.625rem;
    font-size: 0.875rem;
  }

  .no-data {
    padding: 1.5rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .profile-header h2 {
    font-size: 1.125rem;
  }

  .profile-header .btn {
    padding: 0.5625rem 0.875rem;
    font-size: 0.8125rem;
  }

  .profile-menu {
    gap: 0.25rem;
  }

  .menu-item {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }

  .data-content {
    padding: 0.75rem;
  }

  .json-display {
    font-size: 0.6875rem;
    padding: 0.625rem;
  }

  .data-summary {
    padding: 0.5rem;
    font-size: 0.8125rem;
  }

  .no-data {
    padding: 1rem;
    font-size: 0.8125rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0.5rem;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
  }

  .header-title {
    font-size: 1.125rem;
  }

  .calendar-wrapper {
    min-width: 600px;
  }

  .calendar-header {
    gap: 0.375rem;
    font-size: 0.6875rem;
    padding: 0.25rem;
  }

  .calendar {
    gap: 0.375rem;
  }

  .calendar-skeleton {
    gap: 0.375rem;
    min-width: 600px;
  }

  .day-card {
    min-height: 180px;
    max-height: 350px;
    padding: 0.375rem;
    font-size: 0.75rem;
    overflow: hidden;
  }

  .day-number {
    font-size: 1rem;
  }

  .day-name-small {
    font-size: 0.5625rem;
  }

  .full-date {
    font-size: 0.5rem;
  }

  .day-total {
    font-size: 0.6875rem;
  }

  .entry-item {
    padding: 0.25rem;
    margin-bottom: 0.125rem;
  }

  .entry-description {
    font-size: 0.6875rem;
    margin-bottom: 0.125rem;
    line-height: 1.2;
  }

  .entry-time {
    font-size: 0.5625rem;
  }

  .entries-list {
    max-height: 200px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 1;
  }

  .calendar-controls {
    gap: 0.5rem;
    padding: 0.75rem;
    margin-bottom: 1rem;
  }

  .btn-nav {
    padding: 0.4375rem 0.625rem;
    font-size: 0.75rem;
    flex: 1;
  }

  .period-display {
    font-size: 0.8125rem;
    gap: 0.25rem;
  }

  .btn-primary {
    width: 100%;
    padding: 0.5625rem 0.875rem;
    font-size: 0.8125rem;
    margin-top: 0.25rem;
  }

  .today-indicator {
    font-size: 0.6875rem;
  }

  .main-content {
    padding: 0.75rem;
    width: 100%;
    max-width: 100vw;
    margin: 0;
  }

  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .entries-table {
    min-width: 600px;
    font-size: 0.75rem;
  }

  .entries-table th,
  .entries-table td {
    padding: 0.375rem;
  }

  .summary-section-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
  }

  .summary-section {
    grid-template-columns: repeat(2, minmax(250px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
    width: 100%;
    min-width: 550px;
  }

  .summary-card {
    padding: 1rem;
    width: 100%;
  }

  .summary-card h3 {
    font-size: 0.9375rem;
    margin-bottom: 0.75rem;
  }

  .summary-card p {
    font-size: 1.5rem;
  }

  #projectTotals {
    max-height: 350px;
    gap: 0.5rem;
  }

  .project-total-item {
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
  }

  .project-name {
    font-size: 0.8125rem;
  }

  .project-time {
    font-size: 0.875rem;
  }

  .modal-content {
    width: 98%;
    max-width: 98%;
    padding: 0.875rem;
    max-height: 95vh;
  }

  .modal-content h2 {
    font-size: 1.125rem;
    margin-bottom: 0.875rem;
  }

  .form-group {
    margin-bottom: 0.75rem;
  }

  .form-group label {
    font-size: 0.8125rem;
    margin-bottom: 0.3125rem;
  }

  .form-group input,
  .form-group select {
    padding: 0.5625rem;
    font-size: 0.875rem;
  }

  .form-actions {
    gap: 0.625rem;
    flex-direction: column;
  }

  .form-actions .btn {
    width: 100%;
    padding: 0.5625rem 0.875rem;
    font-size: 0.8125rem;
  }

  .calendar-controls {
    gap: 0.5rem;
    padding: 0.75rem;
    margin-bottom: 1rem;
  }

  .calendar-controls-top {
    gap: 0.5rem;
  }

  .calendar-controls-bottom {
    gap: 0.5rem;
  }

  .period-display {
    font-size: 0.75rem;
  }

  .btn-nav {
    padding: 0.4375rem 0.5625rem;
    font-size: 0.75rem;
  }

  .btn-primary {
    padding: 0.5rem 0.875rem;
    font-size: 0.75rem;
  }
}

@keyframes skeleton-loading {
  0% {
    background-position: -200px 0;
  }

  100% {
    background-position: calc(200px + 100%) 0;
  }
}

.skeleton-base {
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.calendar-skeleton {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
  min-width: min-content;
}

.skeleton-day-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.skeleton-day-card::before {
  content: '';
  width: 40px;
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(90deg,
      var(--bg-tertiary) 0px,
      var(--bg-secondary) 40px,
      var(--bg-tertiary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.skeleton-day-card::after {
  content: '';
  width: 60px;
  height: 16px;
  border-radius: 4px;
  background: linear-gradient(90deg,
      var(--bg-tertiary) 0px,
      var(--bg-secondary) 40px,
      var(--bg-tertiary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  margin-top: auto;
}

.table-skeleton {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
}

.skeleton-table-row {
  height: 48px;
  border-radius: 4px;
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.skeleton-text {
  height: 32px;
  width: 120px;
  border-radius: 4px;
  margin-top: 0.5rem;
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  margin-left: auto;
}

.skeleton-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.skeleton-list-item {
  height: 24px;
  border-radius: 4px;
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

.modal-skeleton {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skeleton-form-group {
  height: 4rem;
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 4px;
}

.skeleton-form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.skeleton-button {
  flex: 1;
  height: 2.75rem;
  background: linear-gradient(90deg,
      var(--bg-secondary) 0px,
      var(--bg-tertiary) 40px,
      var(--bg-secondary) 80px);
  background-size: 200px 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: 4px;
}