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

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
.header {
  background: var(--surface);
  padding: 30px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.header h1 {
  font-size: 28px;
  color: var(--text);
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
  background: #475569;
}

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

.btn-cancel {
  background: var(--border);
  color: var(--text);
}

/* Stats Section */
.stats-section {
  margin-bottom: 30px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--surface);
  padding: 24px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-light);
  font-size: 14px;
}

/* Search Bar */
.search-bar {
  margin-bottom: 24px;
}

.search-bar input {
  width: 100%;
  padding: 16px 20px;
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 16px;
  transition: border-color 0.2s;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Cards List */
.cards-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.card-item {
  background: var(--surface);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

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

.card-item-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.card-item-logo {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--bg);
}

.card-item-info h3 {
  font-size: 18px;
  margin-bottom: 4px;
}

.card-item-info p {
  color: var(--text-light);
  font-size: 14px;
}

.card-item-body {
  margin-bottom: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.card-item-body p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.card-item-stats {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.card-item-actions {
  display: flex;
  gap: 8px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 30px;
}

.pagination button {
  padding: 8px 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.pagination button:hover:not(:disabled) {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.pagination button.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  overflow-y: auto;
  padding: 20px;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--surface);
  border-radius: 16px;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 10;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-light);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.modal-close:hover {
  background: var(--bg);
}

/* Form */
.card-form {
  padding: 24px;
}

.form-section {
  margin-bottom: 32px;
}

.form-section h3 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

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

.form-group input[type="color"] {
  height: 50px;
  cursor: pointer;
}

.form-group small {
  display: block;
  margin-top: 4px;
  color: var(--text-light);
  font-size: 12px;
}

.logo-preview {
  margin-top: 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.logo-preview img {
  max-width: 200px;
  max-height: 200px;
  border-radius: 4px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  position: sticky;
  bottom: 0;
  background: var(--surface);
  margin: 0 -24px -24px;
  padding: 24px;
}

.form-errors {
  background: #fee2e2;
  border: 1px solid var(--danger);
  color: #991b1b;
  padding: 16px;
  border-radius: 8px;
  margin-top: 16px;
}

.form-errors ul {
  list-style-position: inside;
  margin: 0;
}

/* Utilities */
.hidden {
  display: none !important;
}

.loading {
  text-align: center;
  padding: 60px;
  color: var(--text-light);
  font-size: 18px;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions {
    flex-direction: column;
  }

  .cards-list {
    grid-template-columns: 1fr;
  }

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

  .modal-content {
    margin: 0;
    max-height: 100vh;
    border-radius: 0;
  }
}