/* Base Styles */
body {
    font-family: 'Noto Sans JP', sans-serif;
    color: #1A202C;
    background-color: #F8F9FA;
    font-feature-settings: "palt";
    -webkit-font-smoothing: antialiased;
    letter-spacing: 0.04em;
}

h1,
h2,
h3,
h4,
.font-en {
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.02em;
}

/* Utilities */
.scrollbar-hide::-webkit-scrollbar {
    display: none;
}

.scrollbar-hide {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Scroll Reveal Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.19, 1, 0.22, 1), transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

/* Custom Components */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: #C5A059;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Sweep Animation Button */
.btn-sweep {
    position: relative;
    z-index: 1;
    overflow: hidden;
    transition: color 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn-sweep::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: #FFFFFF;
    z-index: -1;
    transition: width 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.btn-sweep:hover {
    color: #2563EB !important;
    /* blue-600 */
}

.btn-sweep:hover::before {
    width: 100%;
}

/* Page Transitions */
.page-section {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.page-section.active {
    display: block;
    opacity: 1;
}

/* Glass Header */
header {
    transition: all 0.3s ease;
}

header.header-transparent {
    background-color: rgba(0, 0, 0, 0.5);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

header.scrolled {
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    border-bottom-color: transparent;
}

header.hide-header {
    transform: translateY(-100%);
}

@media (max-width: 767px) {
    #main-header img {
        max-height: 28.67px !important;
    }
}