:root {
  /* Color Palette */
  --bg-color: #0d1117;
  --panel-bg: rgba(22, 27, 34, 0.6);
  --border-color: #30363d;
  
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  
  --accent-color: #58a6ff;
  --accent-hover: #3182ce;
  
  --success-color: #2ea043;
  --success-hover: #238636;
  
  --danger-color: #da3633;
  --danger-hover: #b62324;
  
  --error-bg: rgba(218, 54, 51, 0.1);
  --error-border: rgba(218, 54, 51, 0.4);

  /* Layout */
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --font-main: 'Inter', -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  /* Ambient glow effect */
  background-image: 
    radial-gradient(circle at top right, rgba(88, 166, 255, 0.05), transparent 40%),
    radial-gradient(circle at bottom left, rgba(46, 160, 67, 0.05), transparent 40%);
}

/* Typography elements */
h1, h2, h3, h4 { color: var(--text-primary); font-weight: 600; }
p { color: var(--text-secondary); line-height: 1.5; }

/* Buttons */
.btn {
  font-family: var(--font-main);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.6rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.btn-block { width: 100%; padding: 0.75rem; }

.btn-primary {
  background-color: var(--accent-color);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background-color: var(--accent-hover); }

.btn-success {
  background-color: transparent;
  color: var(--success-color);
  border: 1px solid var(--success-color);
}
.btn-success:hover:not(:disabled) {
  background-color: var(--success-color);
  color: #fff;
}

.btn-danger {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-danger:hover:not(:disabled) {
  background-color: var(--danger-color);
  color: #fff;
  border-color: var(--danger-color);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-outline:hover:not(:disabled) {
  color: var(--text-primary);
  border-color: var(--text-primary);
}


/* Layout Containers */
.app-container {
  width: 100%;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.view {
  width: 100%;
  flex-grow: 1;
  animation: fadeIn 0.3s ease;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
}
.brand-icon {
  background: var(--accent-color);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.brand-icon--small {
  width: 32px;
  height: 32px;
  font-size: 1rem;
}

/* ============== Login View ============== */
#login-view {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.login-card .subtitle {
  text-align: center;
  margin-top: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.875rem;
}

.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}
.form-group input {
  width: 100%;
  background-color: rgba(1, 4, 9, 0.4);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s;
}
.form-group input:focus {
  outline: none;
  border-color: var(--accent-color);
}
.form-group input::placeholder {
  color: rgba(139, 148, 158, 0.4);
}

.error-message {
  color: var(--danger-color);
  font-size: 0.85rem;
  min-height: 1.25rem;
  margin-bottom: 1rem;
  text-align: center;
  display: none;
}
.error-message.show {
  display: block;
}

/* ============== Dashboard View ============== */
.dashboard-header {
  border-bottom: 1px solid var(--border-color);
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dashboard-main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

.dashboard-top {
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.status-alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  display: none;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
}
.status-alert.show { display: block; }
.status-alert.success { 
  background: rgba(46, 160, 67, 0.1); 
  border-color: rgba(46, 160, 67, 0.4); 
  color: var(--success-color);
}
.status-alert.error {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--danger-color);
}

.vm-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.vm-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: transform 0.2s, background-color 0.2s;
}
.vm-card:hover {
  background: rgba(33, 40, 48, 0.6);
  transform: translateY(-2px);
}

.vm-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.vm-name {
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.vm-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.status-dot.online { 
  background-color: var(--success-color); 
  box-shadow: 0 0 8px rgba(46, 160, 67, 0.6);
}
.status-dot.offline { 
  background-color: var(--text-secondary); 
}
.status-dot.loading {
  background-color: var(--accent-color);
  animation: pulse 1s infinite alternate;
}

.vm-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}
.vm-actions .btn {
  flex: 1;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  from { opacity: 0.5; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1.1); box-shadow: 0 0 8px var(--accent-color); }
}

@media (max-width: 600px) {
  .dashboard-main { padding: 1.5rem 1rem; }
  .header-content { padding: 1rem; }
  .vm-grid { grid-template-columns: 1fr; }
}