:root {
  --primary: #6c63ff;
  --primary-dark: #5a52e0;
  --secondary: #ff6b6b;
  --dark: #181c2f;
  --light: #f5f7fa;
  --white: #ffffff;
  --gray: #888;
  --gray-light: #e0e0e0;
  --success: #4caf50;
  --danger: #f44336;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--light);
  color: var(--dark);
}

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

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-light);
}

.admin-header h1 {
  font-size: 2rem;
  color: var(--primary);
}

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

.admin-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--gray-light);
}

.tab-btn {
  padding: 1rem 2rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray);
  transition: all 0.3s ease;
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

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

.section-header h2 {
  font-size: 1.5rem;
  color: var(--dark);
}

.items-list {
  display: grid;
  gap: 1rem;
}

.item-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
}

.item-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.item-info {
  flex: 1;
}

.item-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.item-meta {
  color: var(--gray);
  font-size: 0.9rem;
}

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

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--gray-light);
  color: var(--dark);
}

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

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

.btn-danger:hover {
  background: #d32f2f;
}

.btn-edit {
  background: var(--primary);
  color: var(--white);
  padding: 0.5rem 1rem;
}

.btn-delete {
  background: var(--danger);
  color: var(--white);
  padding: 0.5rem 1rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--white);
  border-radius: 16px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 2px solid var(--gray-light);
}

.modal-header h3 {
  font-size: 1.5rem;
  color: var(--dark);
}

.modal-close {
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--gray);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--dark);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 2px solid var(--gray-light);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--gray-light);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.settings-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

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

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

  .admin-tabs {
    flex-wrap: wrap;
  }

  .tab-btn {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

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

  .item-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

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