:root {
  --bg-page: #F8FAFC;
  --card-bg: #FFFFFF;
  --border-color: #E2E8F0;
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #475569;
  --cyan: #00D2F7;
  --cobalt: #0284C7;
  --emerald: #047857;
}

/* Base styling */
* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

/* Logo Dimensions Constraint */
.brand-logo-img {
  height: 44px !important;
  max-height: 44px !important;
  width: auto !important;
  display: block;
  object-fit: contain;
}

/* Top Pledge Banner */
.top-pledge-banner {
  background: linear-gradient(90deg, #EFF6FF 0%, #F0FDF4 50%, #ECFEFF 100%);
  border-bottom: 1px solid #BAE6FD;
  padding: 8px 16px;
  font-size: 12px;
  text-align: center;
  color: #0369A1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* Navigation Header */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid #E2E8F0;
}

/* Text Gradients */
.text-gradient {
  background: linear-gradient(135deg, #0F172A 0%, #0369A1 50%, #0284C7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #0284C7 0%, #00D2F7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Custom Buttons */
.btn-primary {
  background: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  color: #FFFFFF;
  font-weight: 700;
  border-radius: 0.75rem;
  padding: 0.75rem 1.5rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 15px -2px rgba(2, 132, 199, 0.3);
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -2px rgba(2, 132, 199, 0.4);
  filter: brightness(1.05);
}

.btn-secondary {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: #0F172A;
  font-weight: 600;
  border-radius: 0.75rem;
  padding: 0.75rem 1.5rem;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  cursor: pointer;
}

.btn-secondary:hover {
  background: #F1F5F9;
  border-color: #94A3B8;
  color: #0F172A;
  transform: translateY(-1px);
}

/* Cards & Surfaces */
.card-light {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
}

/* Custom Range Slider */
input[type="range"] {
  accent-color: #0284C7;
}

/* Tip Buttons */
.tip-pill {
  cursor: pointer;
  user-select: none;
}