body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  margin: 0;
  transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

:root {
  --bg-color: #f1f5f9;
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(255, 255, 255, 0.5);
  --text-main: #0f172a;
  --text-muted: #475569;
  --primary: #6366f1;
  --primary-glow: rgba(99, 102, 241, 0.2);
  --success: #10b981;
  --danger: #f43f5e;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --border: rgba(148, 163, 184, 0.35);
}

.dark {
  --bg-color: #020617;
  --card-bg: rgba(30, 41, 59, 0.7);
  --card-border: rgba(51, 65, 85, 0.5);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #818cf8;
  --primary-glow: rgba(129, 140, 248, 0.2);
  --success: #34d399;
  --danger: #fb7185;
  --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(30, 41, 59, 0.5);
  --border: rgba(148, 163, 184, 0.25);
}

body {
  background:
    radial-gradient(circle at top right, var(--primary-glow), transparent 40%),
    radial-gradient(circle at bottom left, var(--primary-glow), transparent 40%),
    var(--bg-color);
  background-attachment: fixed;
  color: var(--text-main);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 3rem;
  border-radius: 2rem;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 480px;
  border: 1px solid var(--card-border);
  text-align: center;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.25rem;
  border-radius: 3rem;
  font-weight: 700;
  font-size: 0.75rem;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 4px 10px -2px rgba(0,0,0,0.1);
}

.status-active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-inactive {
  background: rgba(244, 63, 94, 0.15);
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.2);
}

.address-box {
  background: var(--glass-bg);
  padding: 1.25rem;
  border-radius: 1rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 1.1rem;
  color: var(--primary);
  border: 1px solid var(--glass-border);
  margin-top: 1.5rem;
  word-break: break-all;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
}

.address-box:hover {
  background: var(--card-bg);
  border-color: var(--primary);
  transform: scale(1.02);
}

#hidden-trigger {
  position: fixed;
  top: 0;
  right: 0;
  width: 60px;
  height: 60px;
  z-index: 9999;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
}

.modal-content {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 1rem;
  width: 90%;
  max-width: 400px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hidden {
  display: none !important;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg-color);
  color: var(--text-main);
  box-sizing: border-box;
}

.toggle-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  width: 100%;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  margin-top: 1rem;
  width: 100%;
}

.error-text {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.ping-info {
  margin-top: 1.25rem;
  text-align: left;
  border-top: 1px solid var(--glass-border);
  padding-top: 1.25rem;
}

.ping-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.6rem;
}

.ping-label {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.ping-value {
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
}

@media (max-width: 640px) {
  header { padding: 1rem; }
  .card { padding: 1.5rem; }
}