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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  min-height: 100vh;
  color: #e0e0e0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  font-size: 2rem;
  color: #00d9ff;
  margin-bottom: 4px;
}

.subtitle {
  color: #888;
  font-size: 0.9rem;
}

/* Cards */
.card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: #fff;
}

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

.card-header h2 {
  margin-bottom: 0;
}

/* SOCKS5 Config */
.dual-config {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.config-box {
  background: rgba(0, 217, 255, 0.1);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.config-box h3 {
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: #00d9ff;
}

.config-box.vpn-box {
  background: rgba(0, 255, 136, 0.1);
}

.config-box.vpn-box h3 {
  color: #00ff88;
}

.vpn-status {
  font-size: 0.75rem;
  color: #888;
  margin: 4px 0 8px;
}

.vpn-status.connected {
  color: #00ff88;
}

.config-common {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.config-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.config-item label {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
}

.config-item span {
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.95rem;
  color: #00d9ff;
  word-break: break-all;
}

.config-item .password {
  filter: blur(4px);
  transition: filter 0.2s;
}

.config-item .password.visible {
  filter: none;
}

/* Status */
.status-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.status-item label {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
}

.mode-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.mode-badge.direct {
  background: rgba(0, 217, 255, 0.2);
  color: #00d9ff;
}

.mode-badge.vpn {
  background: rgba(0, 255, 136, 0.2);
  color: #00ff88;
}

.status-actions {
  display: flex;
  gap: 12px;
}

/* Servers */
.servers-info {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 12px;
}

.cache-info {
  margin-left: 12px;
  color: #666;
}

.servers-list {
  max-height: 400px;
  overflow-y: auto;
}

.country-group {
  margin-bottom: 12px;
}

.country-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
}

.country-header:hover {
  background: rgba(255, 255, 255, 0.08);
}

.country-flag {
  font-size: 1.2rem;
}

.country-name {
  flex: 1;
  font-weight: 500;
}

.country-count {
  font-size: 0.8rem;
  color: #888;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 10px;
}

.country-servers {
  display: none;
  padding: 8px 0 0 20px;
}

.country-servers.expanded {
  display: block;
}

.server-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 4px;
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
}

.server-item:hover {
  background: rgba(0, 217, 255, 0.1);
}

.server-info {
  flex: 1;
}

.server-name {
  font-size: 0.9rem;
  color: #fff;
  margin-bottom: 2px;
}

.server-meta {
  font-size: 0.75rem;
  color: #888;
}

.server-uptime {
  font-size: 0.8rem;
  color: #00ff88;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: #00d9ff;
  color: #000;
}

.btn-primary:hover {
  background: #00b8d9;
}

.btn-copy {
  background: rgba(0, 217, 255, 0.2);
  color: #00d9ff;
}

.btn-copy:hover {
  background: rgba(0, 217, 255, 0.3);
}

.btn-refresh {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.btn-refresh:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-disconnect {
  background: rgba(255, 100, 100, 0.2);
  color: #ff6464;
}

.btn-disconnect:hover {
  background: rgba(255, 100, 100, 0.3);
}

.btn-small {
  padding: 4px 12px;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.btn-small:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-block {
  width: 100%;
}

.btn-link {
  background: none;
  border: none;
  color: #888;
  cursor: pointer;
  font-size: 0.85rem;
}

.btn-link:hover {
  color: #fff;
}

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

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: #00d9ff;
}

/* Login */
.login-card {
  width: 100%;
  max-width: 360px;
  text-align: center;
}

.login-card h1 {
  font-size: 2rem;
  color: #00d9ff;
  margin-bottom: 8px;
}

.login-card .subtitle {
  margin-bottom: 24px;
}

.error-msg {
  color: #ff6464;
  font-size: 0.85rem;
  margin-top: 12px;
  min-height: 20px;
}

.hint {
  font-size: 0.8rem;
  color: #666;
  margin-top: 20px;
}

/* Footer */
footer {
  text-align: center;
  padding: 20px;
}

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: #888;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* VPN IP Info */
.vpn-ip-info {
  margin: 12px 0;
  padding: 12px;
  background: rgba(0, 255, 136, 0.05);
  border-radius: 8px;
  border: 1px solid rgba(0, 255, 136, 0.2);
}

.ip-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.ip-info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ip-info-item label {
  font-size: 0.7rem;
  color: #888;
  text-transform: uppercase;
}

.ip-info-item span {
  font-size: 0.85rem;
  color: #00ff88;
  word-break: break-all;
}

/* Connections */
.connections-card .card-header {
  margin-bottom: 12px;
}

.conn-badge {
  background: rgba(0, 217, 255, 0.2);
  color: #00d9ff;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
}

.connections-list {
  max-height: 200px;
  overflow-y: auto;
}

.no-connections {
  color: #666;
  text-align: center;
  padding: 20px;
  font-size: 0.9rem;
}

.client-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
  margin-bottom: 4px;
}

.client-ip {
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.9rem;
  color: #fff;
}

.client-count {
  font-size: 0.8rem;
  color: #00d9ff;
  background: rgba(0, 217, 255, 0.1);
  padding: 2px 8px;
  border-radius: 10px;
}

/* Blacklist */
.blacklist-badge {
  background: rgba(255, 100, 100, 0.2);
  color: #ff6464;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
}

.blacklist-input {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.blacklist-input input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 0.9rem;
}

.blacklist-input input:focus {
  outline: none;
  border-color: #ff6464;
}

.blacklist-list {
  max-height: 150px;
  overflow-y: auto;
}

.no-blacklist {
  color: #666;
  text-align: center;
  padding: 16px;
  font-size: 0.9rem;
}

.blacklist-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255, 100, 100, 0.05);
  border-radius: 6px;
  margin-bottom: 4px;
}

.blacklist-ip {
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.9rem;
  color: #ff6464;
}

.btn-danger {
  background: rgba(255, 100, 100, 0.2);
  color: #ff6464;
}

.btn-danger:hover {
  background: rgba(255, 100, 100, 0.3);
}

.btn-unblock {
  padding: 2px 8px;
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  color: #888;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.btn-unblock:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-block {
  padding: 2px 8px;
  font-size: 0.75rem;
  background: rgba(255, 100, 100, 0.2);
  color: #ff6464;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-left: 8px;
}

.btn-block:hover {
  background: rgba(255, 100, 100, 0.3);
}

/* Mobile */
@media (max-width: 600px) {
  .config-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }
  
  .status-actions {
    flex-direction: column;
  }
}