:root {
  --primary-navy: #0f172a; /* Dark Navy for Trust */
  --accent-gold: #c5a059; /* Gold for Luxury */
  --text-dark: #1f2937;
  --text-gray: #4b5563;
  --bg-light: #f9fafb;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text-dark);
  line-height: 1.8;
  letter-spacing: 0.05em;
  padding-bottom: 120px; /* Space for floating footer */
}

h1,
h2,
h3,
h4,
.serif {
  font-family: "Noto Serif JP", serif;
}

.text-gold {
  color: var(--accent-gold);
}
.bg-gold {
  background-color: var(--accent-gold);
}
.border-gold {
  border-color: var(--accent-gold);
}

/* Hero Image Gradient Overlay */
.hero-bg {
  /* DEFAULT IMAGE - Replace with ./images/hero.jpg for production */
  background:
    linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.5)),
    url("https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80");
  background-size: cover;
  background-position: center;
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Fade In Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.8s ease-out,
    transform 0.8s ease-out;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Gold Gradient Button */
.btn-gold {
  background: linear-gradient(135deg, #d4af37 0%, #c5a059 100%);
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
  cursor: pointer;
  border: none;
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(197, 160, 89, 0.4);
  filter: brightness(1.1);
}

/* Card Hover */
.feature-card {
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

/* Bar Chart Animation */
.bar-fill {
  width: 0;
  transition: width 1.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.bar-fill.animate {
  width: var(--target-width);
}

/* Floating Footer */
.floating-footer {
  transform: translateY(100%);
  transition: transform 0.4s ease-in-out;
  pointer-events: none;
}
.floating-footer.visible {
  transform: translateY(0);
  pointer-events: auto;
}

/* Scroll Top Button */
#scrollTopBtn {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
#scrollTopBtn.visible {
  opacity: 1;
  visibility: visible;
}

/* Form Styling */
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  transition: border-color 0.2s;
}
.form-input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 1px var(--accent-gold);
}

.radio-label {
  cursor: pointer;
  padding: 10px 20px;
  border: 1px solid #e5e7eb;
  border-radius: 4px;
  transition: all 0.2s;
  display: inline-block;
}
input[type="radio"]:checked + .radio-label {
  background-color: #fef9c3; /* Yellow-50 */
  border-color: var(--accent-gold);
  color: #854d0e;
  font-weight: bold;
}

@media (max-width: 768px) {
  .hero-bg {
    background-position: center;
  } /* Mobile adjustments if needed */
}