:root {
  color-scheme: light;
  /* Holographic Pearl Theme */
  --bg: #ffffff;
  --bg-gradient: radial-gradient(circle at 10% 20%, rgba(220, 255, 230, 0.4) 0%, rgba(255, 255, 255, 1) 40%),
                 radial-gradient(circle at 90% 80%, rgba(240, 255, 250, 0.5) 0%, rgba(255, 255, 255, 1) 40%);
  --panel: rgba(250, 250, 250, 0.65);
  --panel-2: rgba(245, 245, 245, 0.8);
  --border: rgba(0, 0, 0, 0.04);
  --border-highlight: rgba(255, 255, 255, 0.9);
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #10b981; /* Pearl Green */
  --accent-2: #059669;
  --warn: #f59e0b;
  --danger: #ef4444;
  --radius: 16px;
}

body {
  font-family: "Segoe UI Variable", "Segoe UI", -apple-system, BlinkMacSystemFont, "Inter", Ubuntu, sans-serif;
  color: var(--text);
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.glass-nav {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
}

.glass-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 1px solid var(--border-highlight);
  border-left: 1px solid var(--border-highlight);
  border-radius: var(--radius);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.03);
}

.btn {
  font: inherit;
  cursor: pointer;
  border: 1px solid var(--border);
  border-top: 1px solid var(--border-highlight);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 12px;
  padding: 0 16px;
  height: 44px;
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
}

@media (min-width: 768px) {
  .btn {
    padding: 0 20px;
  }
}

.btn:hover {
  border-color: rgba(0,0,0,0.08);
  background: #ffffff;
  transform: scale(1.02);
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border: none;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  background: var(--accent-2);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
  transform: translateY(-1px) scale(1.02);
}

/* Dedicated "Green Means GO" High-Conversion CTA */
.btn-go {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-weight: 700;
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4), 0 0 0 1px rgba(16, 185, 129, 0.15);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Subliminal animated sheen reflecting across button */
.btn-go::after {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 70%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-22deg);
  animation: go-sheen 4.5s infinite ease-in-out;
  pointer-events: none;
}

@keyframes go-sheen {
  0%, 65% { left: -120%; }
  100% { left: 220%; }
}

.btn-go:hover:not(:disabled) {
  background: linear-gradient(135deg, #059669 0%, #047857 100%);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.55), 0 0 0 2px rgba(16, 185, 129, 0.3);
  transform: translateY(-2px) scale(1.03);
}

.btn-go:active:not(:disabled) {
  transform: translateY(1px) scale(0.98);
}

.btn-go svg.arrow-icon {
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.btn-go:hover svg.arrow-icon {
  transform: translateX(4px);
}

/* Subtle ambient pulse ring for the main checkout CTA */
.pulse-glow {
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5), 0 6px 24px rgba(16, 185, 129, 0.35);
  animation: pulse-ring 2.5s infinite;
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.45), 0 6px 24px rgba(16, 185, 129, 0.35);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(16, 185, 129, 0), 0 8px 28px rgba(16, 185, 129, 0.45);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0), 0 6px 24px rgba(16, 185, 129, 0.35);
  }
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  box-shadow: none;
}
.btn-ghost:hover {
  color: var(--text);
  background: var(--panel-2);
}

.btn-big {
  height: 44px;
  padding: 0 20px;
  font-size: 15px;
  border-radius: 14px;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .btn-big {
    height: 48px;
    padding: 0 28px;
    font-size: 16px;
  }
}

.logo-box {
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 20px;
}