/* Core Brand Variables */
:root {
  --autonode-dark: #222933;
  --autonode-green: #4cae4f;
  --autonode-green-hover: #3d8c40;
  
  --bg-light: #f4f6f8;
  --surface-white: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  
  --radius-lg: 16px;
  --radius-md: 8px;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08);

  /* Status Colors for Badges */
  --warning-bg: #fef08a;
  --warning-text: #854d0e;
  --danger: #ef4444;
  --info-bg: #e0f2fe;
  --info-text: #0369a1;
  --success-bg: #dcfce7;
  --success-text: #166534;
}

body {
  background-color: var(--bg-light);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

*, *:before, *:after { 
  box-sizing: inherit; 
}

h1, h2, h3, h4 { 
  color: var(--autonode-dark); 
  margin-top: 0; 
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Universal Button Styles */
.btn {
  border: none; 
  padding: 0.875rem 1.5rem; 
  border-radius: var(--radius-md); 
  font-weight: 600; 
  cursor: pointer; 
  transition: all 0.2s ease;
  font-size: 1rem;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary { 
  background-color: var(--autonode-green); 
  color: var(--surface-white); 
  box-shadow: 0 4px 6px -1px rgba(76, 174, 79, 0.2);
}

.btn-primary:hover { 
  background-color: var(--autonode-green-hover); 
  transform: translateY(-1px);
}

.btn-outline { 
  background: transparent; 
  border: 2px solid var(--border-light); 
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  background-color: rgba(0,0,0,0.02);
}

.btn-pay { 
  background-color: #000000; 
  color: var(--surface-white); 
  border-radius: 12px; 
  font-size: 1.25rem; 
  height: 60px;
}

/* Universal Layout Components (Crucial for page structure) */
.app-container { 
  display: flex; 
  flex-direction: column; 
  min-height: 100vh; 
}

.content-wrapper { 
  flex: 1; 
  padding: 2rem 1.5rem; 
  max-width: 1200px; 
  margin: 0 auto; 
  width: 100%; 
}

.card { 
  background: var(--surface-white); 
  padding: 1.5rem; 
  border-radius: var(--radius-lg); 
  box-shadow: var(--shadow-md); 
  border: 1px solid var(--border-light); 
}

/* Shared UI Elements */
.badge { 
  padding: 6px 12px; 
  border-radius: 20px; 
  font-size: 0.75rem; 
  font-weight: 700; 
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.badge.critical { background: var(--danger); color: white; }
.badge.warning { background: var(--warning-bg); color: var(--warning-text); }
.badge.primary { background: var(--info-bg); color: var(--info-text); }
.badge.success { background: var(--success-bg); color: var(--success-text); }

.item-row { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  padding: 16px 0; 
  border-bottom: 1px solid var(--border-light); 
}

.item-row:last-child { 
  border-bottom: none; 
}

/* Shared Branding Images */
.logo-nav { height: 44px; width: auto; object-fit: contain; }
.logo-footer { height: 20px; width: auto; object-fit: contain; opacity: 0.6; margin-top: 0.5rem; }

/* Utilities */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.cursor-pointer { cursor: pointer; }