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

:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #6366f1;
  --secondary-color: #6b7280;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --bg-color: #f8fafc;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --card-bg: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

/* Pages */
.page {
  display: none;
}

.page.active {
  display: block;
}

/* Login Page */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg-gradient);
  position: relative;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(50px, 50px);
  }
}

.login-box {
  background: var(--card-bg);
  padding: 48px;
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-box h1 {
  text-align: center;
  margin-bottom: 8px;
  background: var(--bg-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 32px;
  font-weight: 700;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 36px;
  font-size: 15px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="url"] {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  font-size: 15px;
  transition: all 0.3s ease;
  background-color: var(--bg-color);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: var(--card-bg);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
  transform: translateY(-1px);
}

.checkbox-group label {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
  margin-right: 8px;
}

.help-text {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-transform: none;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--bg-gradient);
  color: white;
  box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 12px -1px rgba(79, 70, 229, 0.5);
}

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

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

.btn-secondary:hover {
  background-color: #4b5563;
}

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

.btn-warning:hover {
  background-color: #e0a800;
}

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

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

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

/* Navbar */
.navbar {
  background: var(--card-bg);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.nav-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.username {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--border-color);
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

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

.tab-content {
  display: none;
}

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

/* Header Actions */
.header-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.header-actions h3 {
  margin: 0;
}

/* Sites List */
.sites-list {
  display: grid;
  gap: 16px;
}

.site-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary-color);
  transition: all 0.3s ease;
}

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

.site-card.inactive {
  border-left-color: var(--secondary-color);
  opacity: 0.7;
}

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

.site-info h4 {
  margin-bottom: 4px;
}

.site-status {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.site-status.active {
  background-color: #d1fae5;
  color: var(--success-color);
}

.site-status.inactive {
  background-color: #f3f4f6;
  color: var(--text-secondary);
}

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

.site-details {
  margin-bottom: 12px;
}

.site-detail {
  margin-bottom: 8px;
  font-size: 14px;
}

.site-detail strong {
  color: var(--text-secondary);
  font-weight: 500;
}

.code-block {
  background-color: #f9fafb;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 12px;
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.code-block code {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Logs List */
.logs-list {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.logs-table th,
.logs-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.logs-table th {
  background-color: var(--bg-color);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

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

.logs-table tr:hover {
  background-color: var(--bg-color);
  cursor: pointer;
}

.status-badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-badge.success {
  background-color: #d1fae5;
  color: var(--success-color);
}

.status-badge.failed {
  background-color: #fee2e2;
  color: var(--danger-color);
}

.status-badge.pending {
  background-color: #fef3c7;
  color: var(--warning-color);
}

/* Blockchain */
.blockchain-settings-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.blockchain-settings-card h4 {
  margin-bottom: 12px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
  align-items: end;
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.blockchain-list {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

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

.blockchain-table th,
.blockchain-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.blockchain-table th {
  background-color: var(--bg-color);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-secondary);
}

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

.blockchain-table tr:hover {
  background-color: var(--bg-color);
}

.blockchain-table .hash-cell {
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 12px;
}

.blockchain-table .address-cell {
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 11px;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.round-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 600;
  background-color: #fef3c7;
  color: var(--warning-color);
  margin-left: 4px;
}

.chain-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.chain-badge-eth {
  background-color: #627eea;
  color: white;
}

.chain-badge-bsc {
  background-color: #f3ba2f;
  color: #1e2026;
}

.chain-badge-polygon {
  background-color: #8247e5;
  color: white;
}

/* Filters */
.filters-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}

.filters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-bottom: 15px;
}

.filter-group {
  display: flex;
  flex-direction: column;
}

.filter-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-start;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

/* Currencies */
.currencies-list .empty-state {
  text-align: center;
  padding: 60px 20px;
}

.currencies-list .empty-state h4 {
  font-size: 24px;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.currencies-list .empty-state p {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.currencies-list .empty-state ol {
  font-size: 14px;
  line-height: 2;
  color: var(--text-primary);
}

.currencies-list .empty-state ol li {
  margin-bottom: 8px;
}

.currencies-list .empty-state a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.currencies-list .empty-state a:hover {
  text-decoration: underline;
}

.currencies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.currency-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.currency-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.currency-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.currency-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.currency-placeholder {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--success-color));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: bold;
}

.currency-info {
  text-align: center;
}

.currency-info h4 {
  margin: 0 0 5px 0;
  font-size: 20px;
  color: var(--text-primary);
}

.currency-name {
  margin: 0 0 10px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.currency-networks {
  margin: 0 0 10px 0;
  font-size: 12px;
  color: var(--text-secondary);
  font-style: italic;
}

.currency-meta {
  display: flex;
  gap: 5px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.badge-popular {
  background-color: #fef3c7;
  color: var(--warning-color);
}

.badge-success {
  background-color: #d4edda;
  color: #155724;
}

.badge-warning {
  background-color: #fff3cd;
  color: #856404;
}

.badge-local {
  background-color: #d4edda;
  color: #155724;
}

.badge-external {
  background-color: #d1ecf1;
  color: #0c5460;
}

/* Settings */
.settings-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.settings-card:hover {
  box-shadow: var(--shadow-lg);
}

.test-result {
  margin-top: 15px;
  padding: 15px;
  border-radius: 6px;
  display: none;
}

.test-result.active {
  display: block;
}

.test-result.success {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.test-result.error {
  background-color: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.test-result.loading {
  background-color: #d1ecf1;
  border: 1px solid #bee5eb;
  color: #0c5460;
}

.test-result h5 {
  margin: 0 0 10px 0;
  font-size: 14px;
  font-weight: 600;
}

.test-result ul {
  margin: 10px 0 0 0;
  padding-left: 20px;
}

.test-result li {
  margin: 5px 0;
  font-size: 13px;
}

.setting-item {
  margin-bottom: 30px;
}

.setting-item:last-child {
  margin-bottom: 0;
}

.setting-item h4 {
  margin-bottom: 8px;
}

.setting-item p {
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.setting-item ol {
  padding-left: 20px;
  color: var(--text-secondary);
}

.setting-item li {
  margin-bottom: 8px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.2s;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.3s;
}

.modal-large {
  max-width: 800px;
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-content form {
  padding: 20px;
}

.modal-actions {
  padding: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Log Details */
.log-details {
  padding: 20px;
}

.log-section {
  margin-bottom: 20px;
}

.log-section h4 {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.log-data {
  background-color: #f9fafb;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 12px;
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Messages */
.error-message {
  color: var(--danger-color);
  font-size: 14px;
  margin: 10px 0;
  display: none;
}

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

.success-message {
  color: var(--success-color);
  font-size: 14px;
  margin: 10px 0;
  display: none;
}

.success-message.active {
  display: block;
}

.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-secondary);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state h4 {
  margin-bottom: 8px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-content {
    flex-direction: column;
    gap: 12px;
  }

  .tabs {
    overflow-x: auto;
  }

  .header-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .site-header {
    flex-direction: column;
    gap: 12px;
  }

  .logs-table {
    font-size: 12px;
  }

  .logs-table th,
  .logs-table td {
    padding: 8px;
  }

  .modal-content {
    width: 95%;
  }
}