:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --border-color: #e2e8f0;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --radius: 6px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}

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

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

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

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

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-danger:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.125rem;
  padding: 0.25rem;
  transition: transform 0.2s;
}

.btn-icon:hover {
  transform: scale(1.2);
}

.metadata-bar {
  display: flex;
  gap: 2rem;
  padding: 1rem;
  background-color: var(--bg-white);
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.metadata-bar span {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.metadata-bar strong {
  color: var(--text-primary);
  font-size: 1.125rem;
  margin-left: 0.25rem;
}

.metadata-bar .overdue {
  color: var(--error-color);
}

.filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.search-input,
.filter-select {
  padding: 0.625rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.875rem;
  background-color: var(--bg-white);
}

.search-input {
  flex: 1;
  min-width: 200px;
}

.filter-select {
  flex: 1;
  min-width: 200px;
}

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

.error-message {
  background-color: #fee2e2;
  border: 1px solid var(--error-color);
  color: #991b1b;
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}

.success-message {
  background-color: #d1fae5;
  border: 1px solid var(--success-color);
  color: #065f46;
  padding: 1rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}

.table-container {
  background-color: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background-color: var(--bg-light);
  border-bottom: 2px solid var(--border-color);
}

th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

tbody tr:hover {
  background-color: var(--bg-light);
}

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

.task-notes {
  color: var(--text-secondary);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.priority-badge,
.status-badge {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.priority-high {
  background-color: #fee2e2;
  color: #991b1b;
}

.priority-medium {
  background-color: #fef3c7;
  color: #92400e;
}

.priority-low {
  background-color: #dbeafe;
  color: #1e40af;
}

.status-pending {
  background-color: #fef3c7;
  color: #92400e;
}

.status-in_progress {
  background-color: #dbeafe;
  color: #1e40af;
}

.status-completed {
  background-color: #d1fae5;
  color: #065f46;
}

.status-blocked {
  background-color: #fee2e2;
  color: #991b1b;
}

.status-cancelled {
  background-color: #f3f4f6;
  color: #4b5563;
}

.status-needs_review {
  background-color: #e0e7ff;
  color: #3730a3;
}

.tag {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.75rem;
  margin-right: 0.25rem;
}

.actions {
  display: flex;
  gap: 0.5rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

/* Edit Form Styles */

.task-form {
  background-color: var(--bg-white);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  max-width: 800px;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

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

input[type="text"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.625rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-family: inherit;
  background-color: var(--bg-white);
  transition: border-color 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea {
  resize: vertical;
}

small {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.form-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 1000;
}

.modal {
  width: 100%;
  max-width: 420px;
  background-color: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.modal-content {
  padding: 1.5rem;
}

.modal-content h2 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
  color: var(--text-primary);
}

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

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Project Cards */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 2rem 0 1rem;
}

.section-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.project-card {
  background-color: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: box-shadow 0.2s;
}

.project-card:hover {
  box-shadow: var(--shadow-md);
}

.project-card.completed {
  opacity: 0.6;
}

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
}

.project-header:hover {
  background-color: var(--bg-light);
}

.project-info {
  flex: 1;
}

.project-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--text-secondary);
  transition: transform 0.2s;
  padding: 0.25rem;
}

.project-toggle.expanded {
  transform: rotate(180deg);
}

.progress-bar-container {
  width: 120px;
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--success-color);
  border-radius: 3px;
  transition: width 0.3s;
}

.project-tasks {
  display: none;
  border-top: 1px solid var(--border-color);
}

.project-tasks.expanded {
  display: block;
}

.project-task-row {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

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

.project-task-row:hover {
  background-color: var(--bg-light);
}

.project-task-check {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.project-task-name {
  flex: 1;
}

.project-task-name.completed {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.project-task-actions {
  display: flex;
  gap: 0.25rem;
}

.project-add-task {
  display: block;
  padding: 0.75rem 1.25rem;
  color: var(--primary-color);
  font-size: 0.875rem;
  text-decoration: none;
  border-top: 1px solid var(--border-color);
}

.project-add-task:hover {
  background-color: var(--bg-light);
}

/* Project status badges */
.status-active {
  background-color: #dbeafe;
  color: #1e40af;
}

.status-on_hold {
  background-color: #fef3c7;
  color: #92400e;
}

.completed-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 0.5rem 0;
}

.completed-toggle:hover {
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .metadata-bar {
    flex-direction: column;
    gap: 0.5rem;
  }

  .filters {
    flex-direction: column;
  }

  .search-input {
    max-width: 100%;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 0.75rem;
  }

  th, td {
    padding: 0.5rem;
  }

  .project-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .project-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .project-meta {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .progress-bar-container {
    width: 80px;
  }
}