:root {
    --navy: #1f60a3;
    --black: #080808;
    --white: #FFFFFF;
    --gray-bg: #F5F7F9;
    --medium-gray: #E2E8F0;
    --text-main: #1A202C;
    --text-dim: #718096;
}
body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--black);
    color: var(--white);
    overflow-x: hidden;
    line-height: 1.6;
    font-weight: 300;
}

/* 見出し以外の要素はfont-weight: 300 */
p, span:not(h1 span):not(h2 span):not(h3 span):not(h4 span):not(h5 span):not(h6 span),
a:not(h1 a):not(h2 a):not(h3 a):not(h4 a):not(h5 a):not(h6 a),
button, td, th, li, label, input, textarea, select, div:not([class*="heading"]) {
    font-weight: 300;
}

/* 見出しと太字クラスは太字のまま */
h1, h2, h3, h4, h5, h6,
.heading-xl,
.font-black,
.font-bold {
    font-weight: 500;
}

/* Utility Classes */
.bg-navy { background-color: var(--navy); }
.text-navy { color: var(--navy); }
.border-navy { border-color: var(--navy); }
.bg-gray-bg { background-color: var(--gray-bg); }

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Slide from left Animation */
.slide-from-left {
    opacity: 0;
    transform: translateX(-100px);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.slide-from-left.active {
    opacity: 1;
    transform: translateX(0);
}

/* Typography */
.heading-xl {
    font-size: clamp(1.7rem, 4vw, 2.8rem);
    font-weight: 500;
    line-height: 0.95;
    letter-spacing: -0.05em;
    text-transform: uppercase;
}
@media (min-width: 768px) {
    .heading-xl {
        font-size: clamp(2.5rem, 7.5vw, 6.5rem);
    }
}

/* Hero Title - Smaller size (2/3 of heading-xl) */
#hero-title {
    font-size: clamp(2rem, 6vw, 3rem);
}
@media (min-width: 768px) {
    #hero-title {
        font-size: clamp(1.67rem, 5vw, 4rem);
    }
}

/* Divider Animation */
.divider {
    height: 1px;
    background-color: var(--white);
    width: 100%;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.active .divider {
    transform: scaleX(1);
}

/* Header logic */
header {
    transition: all 0.5s ease;
}
header.scrolled {
    background: rgba(8, 8, 8, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--white);
}
header.scrolled .nav-link { color: var(--white); }
header.scrolled .logo-text { color: var(--white); }
header.scrolled .logo-img-white { display: block; }
header.scrolled .logo-img-black { display: none; }
.logo-img-white { display: block; }
.logo-img-black { display: none; }
/* Initial state based on data-initial-style */
header[data-initial-style="white"] .logo-img-white { display: block; }
header[data-initial-style="white"] .logo-img-black { display: none; }
header[data-initial-style="black"] .logo-img-white { display: none; }
header[data-initial-style="black"] .logo-img-black { display: block; }

/* Dropdown Menu */
.dropdown {
    position: relative;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--medium-gray);
    min-width: 280px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-item {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--black);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--medium-gray);
}
.dropdown-item:last-child {
    border-bottom: none;
}
.dropdown-item:hover {
    background-color: var(--gray-bg);
    color: var(--black);
}
.dropdown-item-title {
    font-size: 0.875rem;
    font-weight:500;
    margin-bottom: 0.25rem;
    color: var(--black);
}
.dropdown-item-desc {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--text-dim);
    text-transform: none;
    letter-spacing: 0;
    margin-top: 0.25rem;
}

/* Company Table Styling */
.company-table th {
    width: 30%;
    text-align: left;
    padding: 2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    vertical-align: top;
}
.company-table.company-page th {
    color: var(--black);
}
.company-table td {
    padding: 2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
}

/* Business Cards */
.business-card {
    background: var(--black);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transition: all 0.4s ease;
}
.business-card:hover {
    border-color: var(--navy);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(31, 96, 163, 0.3);
}

/* Business Card Image Style */
.business-card-image {
    cursor: pointer;
    position: relative;
}

.business-card-vertical {
    height: 100%;
}

.business-card-horizontal {
    height: 100%;
}

@media (max-width: 767px) {
    .business-card-vertical {
        height: 400px;
        min-height: 400px;
        grid-row: span 1;
    }
    
    .business-card-horizontal {
        height: 250px;
        min-height: 250px;
    }
}
.business-card img {
    transition: transform 0.6s ease;
}
.business-card:hover img {
    transform: scale(1.05);
}

/* Pagination */
.pagination-btn.active {
    background-color: var(--navy);
    color: var(--white);
    border-color: var(--navy);
}
.pagination-btn:hover {
    border-color: var(--navy);
    color: var(--navy);
}

/* Line Animation */
.line-animate {
    display: inline-block;
    opacity: 0;
    transform: translateY(50px);
    animation: lineSlideUp 1.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    line-height: 0.95;
}

@keyframes lineSlideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Menu */
.hamburger-button {
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1001;
    position: relative;
    width: 2rem;
    height: 2rem;
    color: inherit;
}


.hamburger-button .hamburger-icon,
.hamburger-button .hamburger-close-icon {
    position: absolute;
    width: 1.5rem;
    height: 1.5rem;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.hamburger-button .hamburger-icon {
    display: block;
    opacity: 1;
}

.hamburger-button .hamburger-close-icon {
    display: none;
    opacity: 0;
}

.hamburger-button.active .hamburger-icon {
    display: none;
    opacity: 0;
}

.hamburger-button.active .hamburger-close-icon {
    display: block;
    opacity: 1;
}

/* Ensure hamburger button is visible on all header styles */
header .hamburger-button {
    color: currentColor;
    visibility: visible;
    opacity: 1;
}

header.text-white .hamburger-button {
    color: var(--white);
}

header.text-black .hamburger-button,
header.scrolled .hamburger-button {
    color: var(--black);
}

/* Hide hamburger button on desktop - must be after other styles */
@media (min-width: 768px) {
    header .hamburger-button,
    .hamburger-button {
        display: none;
        visibility: hidden;
    }
}

/* Ensure hamburger button icons are properly styled */
header .hamburger-button .hamburger-icon,
header .hamburger-button .hamburger-close-icon {
    stroke: currentColor;
    fill: none;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

/* Hide mobile menu overlay on desktop */
@media (min-width: 768px) {
    .mobile-menu-overlay {
        display: none;
        visibility: hidden;
    }
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 85%;
    max-width: 400px;
    height: 100vh;
    background: var(--black);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
}

/* Hide mobile menu on desktop */
@media (min-width: 768px) {
    .mobile-menu {
        display: none;
        visibility: hidden;
    }
}

.mobile-menu.active {
    transform: translateX(0);
    visibility: visible;
    opacity: 1;
}

.mobile-menu-header {
    padding: 2rem 1.5rem 1.5rem;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    background: var(--black);
    position: sticky;
    top: 0;
    z-index: 10;
}

.mobile-menu-title {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--white);
}

.mobile-menu-content {
    padding: 0;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--white);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    background: var(--black);
    position: relative;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: var(--white);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav-link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
    padding-left: 2rem;
}

.mobile-nav-link:hover::before {
    width: 4px;
}

.mobile-nav-icon {
    width: 1rem;
    height: 1rem;
    opacity: 0.4;
    transition: opacity 0.3s ease, transform 0.3s ease;
    color: var(--white);
}

.mobile-nav-link:hover .mobile-nav-icon {
    opacity: 1;
    transform: translateX(4px);
}

.mobile-contact-button {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background-color: var(--white);
    color: var(--black);
    border: none;
    margin-top: auto;
    margin-bottom: 2rem;
    margin-left: 1.5rem;
    margin-right: 1.5rem;
    border-radius: 0;
    transition: all 0.3s ease;
    text-decoration: none;
}

.mobile-contact-button:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.mobile-contact-icon {
    width: 1rem;
    height: 1rem;
    opacity: 0.8;
    transition: transform 0.3s ease;
    color: var(--black);
}

.mobile-contact-button:hover .mobile-contact-icon {
    transform: translateX(4px);
}

.mobile-dropdown {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--black);
}

.mobile-dropdown-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--white);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.mobile-dropdown-toggle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: var(--white);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-dropdown-toggle:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
    padding-left: 2rem;
}

.mobile-dropdown-toggle:hover::before {
    width: 4px;
}

.mobile-dropdown.active .mobile-dropdown-toggle {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.mobile-dropdown.active .mobile-dropdown-toggle::before {
    width: 4px;
}

.mobile-dropdown-icon {
    width: 1rem;
    height: 1rem;
    opacity: 0.4;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    color: var(--white);
}

.mobile-dropdown.active .mobile-dropdown-icon {
    transform: rotate(180deg);
    opacity: 1;
}

.mobile-dropdown-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    background: var(--black);
}

.mobile-dropdown.active .mobile-dropdown-menu {
    max-height: 600px;
}

.mobile-dropdown-item {
    display: block;
    padding: 1.25rem 1.5rem 1.25rem 2.5rem;
    color: var(--white);
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    background: var(--black);
}

.mobile-dropdown-item:last-child {
    border-bottom: none;
}

.mobile-dropdown-item:hover {
    background: rgba(255, 255, 255, 0.05);
    padding-left: 3rem;
}

.mobile-dropdown-item-title {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--white);
    line-height: 1.4;
}

.mobile-dropdown-item-desc {
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.6);
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.5;
}

/* Prevent body scroll when menu is open */
body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}