:root {
  --primary: #3B82F6; /* blue-500 */
  --primary-hover: #2563EB; /* blue-600 */
  --secondary: #10B981;
  --background: #0B1120; /* Darker navy */
  --surface: #0F172A; /* Slate card background */
  --surface-glass: rgba(15, 23, 42, 0.8);
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --border: #1E293B;
  --border-light: rgba(255, 255, 255, 0.05);
  --danger: #ef4444;
  --success: #10B981;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--background);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glass);
}

/* Modern Inputs */
.input-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.2s ease-in-out;
}
.input-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Premium Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: white;
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}
.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--border);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

/* Layout utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}
.page-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-content {
  flex: 1;
  padding: 2rem 0;
}

.sidebar-link:hover {
  background-color: var(--border);
}

.hover-underline:hover {
  text-decoration: underline;
}

.address-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
}