:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --danger-color: #ef4444;
  --danger-light: #fee2e2;
  --border-radius: 6px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --transition: all 0.2s ease-in-out;
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --low-color: #f59e0b;
  /* Желтый для 1 ост. */
  --zero-color: #ef4444;
  /* Красный для 0 ост. */
}

/* Общие стили */
.header-content {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-icon {
  width: 20px;
  height: 20px;
}

.header h1 {
  margin: 0;
  font-size: 18px;
  color: var(--gray-900);
  font-weight: 600;
  font-family: var(--font-family);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
}

.filter-input,
.filter-select {
  flex: 1;
  min-width: 120px;
  padding: 6px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.85em;
  outline: none;
  transition: var(--transition);
  font-family: var(--font-family);
}

.filter-input:focus,
.filter-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.class-add-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.85em;
  font-weight: 500;
  transition: var(--transition);
  font-family: var(--font-family);
}

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

/* Таблица занятий */
.class-table {
  background-color: var(--gray-50);
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-200);
  margin: 8px 0;
  overflow: auto;
  max-height: 80vh;
}

.class-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85em;
  font-family: var(--font-family);
}

.class-table th,
.class-table td {
  padding: 8px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.class-table th {
  background-color: var(--gray-50);
  color: var(--gray-900);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.class-row:hover {
  background-color: var(--gray-100);
}

.pending {
  background-color: #fef3c7;
  /* Желтый фон для не отмеченных прошлых */
}

.conducted {
  background-color: var(--gray-100);
}

.class-edit-btn,
.class-delete-btn {
  background-color: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-right: 4px;
  display: inline-flex;
  align-items: center;
}

.class-edit-btn:hover {
  background: rgba(79, 70, 229, 0.1);
  border-radius: var(--border-radius);
}

.class-delete-btn:hover {
  background: var(--danger-light);
  border-radius: var(--border-radius);
}

.action-icon {
  width: 16px;
  height: 16px;
}

/* Модальное окно для занятий */
.class-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 8px;
}

.class-modal-content {
  background: var(--gray-50);
  padding: 16px;
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 400px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  font-family: var(--font-family);
}

.class-modal-content h2 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--gray-900);
  font-weight: 600;
}

.class-modal-content input,
.class-modal-content select,
.class-modal-content button[id="class-select-clients-btn"] {
  width: 100%;
  padding: 6px;
  margin-bottom: 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.85em;
  font-family: var(--font-family);
}

.class-modal-content input.error,
.class-modal-content select.error {
  border-color: var(--danger-color);
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.1);
}

.class-modal-content button[id="class-select-clients-btn"] {
  background-color: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
}

.class-modal-content button[id="class-select-clients-btn"]:hover {
  background-color: var(--primary-hover);
}

.class-modal-content input:focus,
.class-modal-content select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.days-of-week {
  margin-bottom: 8px;
}

.days-of-week label {
  font-size: 0.85em;
  font-weight: 500;
  color: var(--gray-700);
}

.days-of-week-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.day-button {
  padding: 4px 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  background: var(--gray-100);
  cursor: pointer;
  font-size: 0.8em;
  font-family: var(--font-family);
}

.day-button.selected {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.class-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--gray-200);
}

.class-modal-actions button {
  padding: 6px 12px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.85em;
  font-family: var(--font-family);
}

.class-modal-actions button[id="class-save-btn"] {
  background-color: var(--primary-color);
  color: white;
}

.class-modal-actions button[id="class-save-btn"]:hover {
  background-color: var(--primary-hover);
}

.class-modal-actions button[id="class-cancel-btn"] {
  background-color: var(--gray-400);
  color: white;
}

.class-modal-actions button[id="class-cancel-btn"]:hover {
  background-color: var(--gray-500);
}

/* Модальное окно для журнала */
.journal-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 12px;
}

.journal-modal-content {
  background: var(--gray-50);
  padding: 20px;
  border-radius: var(--border-radius);
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  font-family: var(--font-family);
}

.journal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.title-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.journal-header h2 {
  margin: 0;
  font-size: 18px;
  color: var(--gray-900);
  font-weight: 600;
}

.journal-date {
  font-size: 1em;
  color: var(--gray-500);
  white-space: nowrap;
}

.journal-close-btn {
  background: transparent;
  border: none;
  font-size: 20px;
  color: var(--gray-700);
  cursor: pointer;
  padding: 4px;
}

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

.journal-trainer {
  color: var(--primary-color);
  font-weight: 500;
}

.journal-controls {
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.client-search-container {
  position: sticky;
  top: 0;
  background: var(--gray-50);
  z-index: 1;
}

.client-search-container input {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.9em;
  font-family: var(--font-family);
}

.client-search-container input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

#journal-batch-action {
  width: 250px;
  padding: 8px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.9em;
  font-family: var(--font-family);
  background: var(--gray-100);
}

#journal-batch-action:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.journal-table-container {
  max-height: 50vh;
  overflow-y: auto;
}

.journal-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 4px;
  font-size: 0.9em;
  font-family: var(--font-family);
}

.journal-table th,
.journal-table td {
  padding: 10px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.journal-table th {
  background: var(--gray-50);
  color: var(--gray-900);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.journal-table tr {
  background: var(--gray-100);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.journal-table tr.row-changed {
  background: rgba(79, 70, 229, 0.1);
}

.journal-table input[type="checkbox"] {
  cursor: pointer;
}

.journal-table select.journal-reason {
  width: 100%;
  padding: 6px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.9em;
  font-family: var(--font-family);
  background-color: var(--gray-50);
}

.journal-table select.journal-reason option[value="Неуважительная"] {
  background-color: rgba(239, 68, 68, 0.1);
  color: #b91c1c;
}

.journal-table select.journal-reason option[value="Уважительная"] {
  background-color: rgba(234, 179, 8, 0.1);
  color: #a16207;
}

.journal-table select.journal-reason option[value="Отменено"] {
  background-color: rgba(107, 114, 128, 0.1);
  color: var(--gray-700);
}

.journal-table select.journal-reason:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.ost-low {
  color: var(--low-color);
}

.ost-zero {
  color: var(--zero-color);
}

.sub-warning {
  color: #f59e0b;
  cursor: help;
}

.journal-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  border-top: 1px solid var(--gray-200);
  padding-top: 12px;
}

.journal-actions button {
  padding: 8px 16px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.9em;
  font-family: var(--font-family);
}

#journal-undo-btn {
  background-color: var(--gray-400);
  color: white;
}

#journal-undo-btn:disabled {
  background-color: var(--gray-300);
  cursor: not-allowed;
}

#journal-undo-btn:hover:not(:disabled) {
  background-color: var(--gray-500);
}

#journal-save-btn {
  background-color: var(--primary-color);
  color: white;
}

#journal-save-btn:hover {
  background-color: var(--primary-hover);
}

#journal-close-btn {
  background-color: var(--gray-400);
  color: white;
}

#journal-close-btn:hover {
  background-color: var(--gray-500);
}

.save-status {
  font-size: 0.9em;
  color: var(--primary-color);
}

/* Модальное окно для выбора клиентов */
.client-picker-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1100;
  padding: 8px;
}

.client-picker-modal-content {
  background: var(--gray-50);
  padding: 16px;
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  font-family: var(--font-family);
}

.client-picker-modal-content h2 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--gray-900);
}

.client-search-container {
  position: sticky;
  top: 0;
  background: var(--gray-50);
  z-index: 1;
}

.client-search-container input {
  width: 250px;
  padding: 6px;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 0.85em;
  font-family: var(--font-family);
}

.client-search-container input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.client-picker-table {
  width: 100%;
  overflow-x: auto;
}

.client-picker-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85em;
  font-family: var(--font-family);
}

.client-picker-table th,
.client-picker-table td {
  padding: 8px;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.client-picker-table th {
  background-color: var(--gray-50);
  color: var(--gray-900);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.client-picker-table tr.selectable {
  cursor: pointer;
}

.client-picker-table tr.selectable:hover {
  background-color: var(--gray-100);
}

.client-picker-table tr.selected {
  background-color: rgba(79, 70, 229, 0.1);
}

.client-picker-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 10px;
  border-top: 1px solid var(--gray-200);
  padding-top: 8px;
}

.client-picker-actions button {
  padding: 6px 12px;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 0.85em;
  font-family: var(--font-family);
}

#client-picker-save-btn {
  background-color: var(--primary-color);
  color: white;
}

#client-picker-save-btn:hover {
  background-color: var(--primary-hover);
}

#client-picker-cancel-btn {
  background-color: var(--gray-400);
  color: white;
}

#client-picker-cancel-btn:hover {
  background-color: var(--gray-500);
}

/* Стили для выбранных клиентов */
.selected-clients {
  margin-bottom: 8px;
}

.selected-clients label {
  font-size: 0.85em;
  font-weight: 500;
  color: var(--gray-700);
}

.selected-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px;
  border: 1px dashed var(--gray-300);
  border-radius: var(--border-radius);
}

.client-chip {
  background: var(--gray-200);
  padding: 4px 8px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8em;
}

.client-remove-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 0.8em;
  color: var(--gray-700);
}

.client-remove-btn:hover {
  color: var(--danger-color);
}

/* Адаптивность */
@media (max-width: 600px) {
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 6px;
  }

  .filter-input,
  .filter-select {
    width: 100%;
    padding: 5px;
    font-size: 0.8em;
  }

  .class-add-btn {
    width: 100%;
    padding: 5px;
  }

  .class-table th,
  .class-table td {
    padding: 6px;
    font-size: 0.8em;
  }

  .class-modal-content {
    max-width: 100%;
    padding: 12px;
  }

  .class-modal-content h2 {
    font-size: 14px;
  }

  .class-modal-content input,
  .class-modal-content select,
  .class-modal-content button[id="class-select-clients-btn"] {
    padding: 5px;
    font-size: 0.8em;
  }

  .days-of-week-buttons {
    gap: 3px;
  }

  .day-button {
    padding: 3px 6px;
    font-size: 0.75em;
  }

  .class-modal-actions button {
    padding: 5px 10px;
    font-size: 0.8em;
  }

  .journal-modal-content {
    max-width: 100%;
    padding: 16px;
  }

  .journal-header h2 {
    font-size: 16px;
  }

  .journal-table th,
  .journal-table td {
    padding: 8px;
    font-size: 0.85em;
  }

  .journal-table select {
    padding: 5px;
    font-size: 0.85em;
  }

  .journal-actions button {
    padding: 6px 12px;
    font-size: 0.85em;
  }

  .client-search-container input,
  #journal-batch-action {
    padding: 6px;
    font-size: 0.85em;
  }

  .client-picker-modal-content {
    max-width: 100%;
    padding: 12px;
  }

  .client-picker-modal-content h2 {
    font-size: 14px;
  }

  .client-search-container input {
    padding: 5px;
    font-size: 0.8em;
  }

  .client-picker-table th,
  .client-picker-table td {
    padding: 6px;
    font-size: 0.8em;
  }

  .client-picker-actions button {
    padding: 5px 10px;
    font-size: 0.8em;
  }

  .client-chip {
    padding: 3px 6px;
    font-size: 0.75em;
  }
}

@media (max-width: 400px) {
  .header h1 {
    font-size: 16px;
  }

  .header-icon {
    width: 18px;
    height: 18px;
  }

  .filter-bar {
    padding: 4px;
  }

  .class-table th,
  .class-table td {
    padding: 4px;
    font-size: 0.75em;
  }

  .class-modal-content {
    padding: 10px;
  }

  .class-modal-content h2 {
    font-size: 13px;
  }

  .class-modal-content input,
  .class-modal-content select,
  .class-modal-content button[id="class-select-clients-btn"] {
    padding: 4px;
    font-size: 0.75em;
  }

  .day-button {
    padding: 2px 5px;
    font-size: 0.7em;
  }

  .class-modal-actions button {
    padding: 4px 8px;
    font-size: 0.75em;
  }

  .journal-modal-content {
    padding: 12px;
  }

  .journal-header h2 {
    font-size: 14px;
  }

  .journal-table th,
  .journal-table td {
    padding: 6px;
    font-size: 0.8em;
  }

  .journal-table select {
    padding: 4px;
    font-size: 0.8em;
  }

  .journal-actions button {
    padding: 5px 10px;
    font-size: 0.8em;
  }

  .client-search-container input,
  #journal-batch-action {
    padding: 5px;
    font-size: 0.8em;
  }

  .client-picker-modal-content {
    padding: 10px;
  }

  .client-picker-modal-content h2 {
    font-size: 13px;
  }

  .client-search-container input {
    padding: 4px;
    font-size: 0.75em;
  }

  .client-picker-table th,
  .client-picker-table td {
    padding: 4px;
    font-size: 0.75em;
  }

  .client-picker-actions button {
    padding: 4px 8px;
    font-size: 0.75em;
  }

  .client-chip {
    padding: 2px 5px;
    font-size: 0.7em;
  }
}