/* Custom Tailwind Configuration */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* CSS Variables for Brand Colors */
:root {
    --brand-navy: #0F172A;
    --brand-blue: #1E3A8A;
    --brand-gold: #C5A059;
    --brand-light: #F8FAFC;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #475569;
    background-color: white;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Animation Definitions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation Classes */
.fade-in-up {
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

/* Custom Utilities */
.backdrop-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Section Spacing */
section {
    scroll-margin-top: 80px;
}

/* Dropdown Menu */
.group:hover .group-hover\:opacity-100 {
    opacity: 1;
}

.group:hover .group-hover\:visible {
    visibility: visible;
}

/* Image Optimization */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Link Transitions */
a {
    transition: all 0.3s ease;
}

/* Button Base Styles */
button, .btn {
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--brand-blue);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--brand-navy);
}

/* Responsive Typography */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
}