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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --border-primary: #333;
  --border-secondary: #404040;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #888888;
  --text-accent: #666666;
  --accent-primary: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #2563eb20;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app {
  height: 100vh;
  overflow: hidden;
}

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

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Button Styles */
.btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

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

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

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

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--border-secondary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
}

/* Input Styles */
.input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-secondary);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease;
  width: 100%;
}

.input:focus {
  border-color: var(--accent-primary);
}

.input::placeholder {
  color: var(--text-accent);
}

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

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

.form-error {
  color: var(--error);
  font-size: 12px;
  margin-top: 4px;
}

/* Loading Spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-secondary);
  border-top: 2px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .btn {
    padding: 10px 16px;
    font-size: 16px;
  }
  
  .input {
    padding: 12px;
    font-size: 16px;
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

.fade-in {
  animation: fadeIn 0.3s ease-out;
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

/* Utility Classes */
.flex {
  display: flex;
}

.flex-1 {
  flex: 1;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: 8px;
}

.gap-4 {
  gap: 16px;
}

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

.text-sm {
  font-size: 12px;
}

.text-lg {
  font-size: 18px;
}

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.mt-4 {
  margin-top: 16px;
}

.mb-4 {
  margin-bottom: 16px;
}

.p-4 {
  padding: 16px;
}

.p-6 {
  padding: 24px;
}

.rounded {
  border-radius: 6px;
}

.rounded-lg {
  border-radius: 12px;
}

.border {
  border: 1px solid var(--border-secondary);
}

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

.text-muted {
  color: var(--text-muted);
}

.text-accent {
  color: var(--accent-primary);
}