/* Base Styles & Variables */
:root {
    --color-primary: #00A2BA;
    --color-secondary: #00bfa5;
    --color-background: #ffffff;
    --color-surface: #f3f4f6;
    --color-text: #4b5563;
    --color-text-muted: #4b5563;
    --color-border: #e2e8f0;
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-display: 'Caveat', cursive;
}

/* Reset & Defaults */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    letter-spacing: 0.2em;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.5;
    transition: background-color 0.3s, color 0.3s;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s, background-color 0.3s;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

@media (min-width: 768px) {
    .container {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}

.sp-br {
    display: none;
}

@media (max-width: 767px) {
    .sp-br {
        display: block;
    }
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 5rem;
    z-index: 200;
    background-color: transparent;
    backdrop-filter: none;
    box-shadow: none;
    transition: all 0.3s ease;
}

.site-header.is-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

body.menu-open .site-header {
    background-color: transparent;
    box-shadow: none;
    backdrop-filter: none;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: color 0.3s ease;
    letter-spacing: 0.1em;
}

.site-header.is-scrolled .logo {
    color: var(--color-primary);
}

.desktop-nav {
    display: none;
}

.desktop-nav a {
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s;
}

.site-header.is-scrolled .desktop-nav a {
    color: var(--color-text);
}

.site-header.is-scrolled .desktop-nav a:hover {
    color: var(--color-primary);
}

.desktop-nav a:hover {
    color: var(--color-primary);
}

.header-cta {
    display: none;
}

.header-cta .btn-primary {
    background-color: white;
    color: var(--color-primary);
}

.header-cta .btn-primary:hover {
    opacity: 0.8;
}

.site-header.is-scrolled .header-cta .btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.site-header.is-scrolled .header-cta .btn-primary:hover {
    opacity: 0.8;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 0.25rem;
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.3s, transform 0.3s;
}

.btn-primary:hover {
    opacity: 0.8;
}

.mobile-menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    width: 25px;
    height: 25px;
    padding: 0;
    transition: all 0.3s ease;
    z-index: 151;
    position: relative;
    display: flex;
    flex-direction: column;
}

.mobile-menu-btn.active {
    position: fixed;
    top: 27.5px;
    right: 1rem;
    background-color: transparent;
}

@media (min-width: 1024px) {
    .mobile-menu-btn.active {
        right: 2rem;
    }
}

/* Base line styles */
.hamburger-line {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #fff;
    border-radius: 2px;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.hamburger-line:nth-child(1) {
    top: 0;
}

.hamburger-line:nth-child(2) {
    top: 11.5px;
}

.hamburger-line:nth-child(3) {
    bottom: 0;
    width: 100%;
}

/* Return Animations - only enabled after interaction */
.mobile-menu-btn.has-interacted:not(.active) .hamburger-line:nth-child(1) {
    animation: btn07-bar01 .75s forwards;
}

.mobile-menu-btn.has-interacted:not(.active) .hamburger-line:nth-child(2) {
    transition: all .25s .2s;
    opacity: 1;
}

.mobile-menu-btn.has-interacted:not(.active) .hamburger-line:nth-child(3) {
    animation: btn07-bar03 .75s forwards;
}

/* Active State Animations */
.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    animation: active-btn07-bar01 .75s forwards;
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
    animation: active-btn07-bar03 .75s forwards;
}

.site-header.is-scrolled .hamburger-line,
.mobile-menu-btn.active .hamburger-line {
    background-color: var(--color-primary);
}

/* Animation Keyframes (User provided logic) */
@keyframes active-btn07-bar01 {
    0% {
        transform: translateY(0) rotate(0);
    }

    50% {
        transform: translateY(11.5px) rotate(0);
    }

    100% {
        transform: translateY(11.5px) rotate(45deg);
    }
}

@keyframes active-btn07-bar03 {
    0% {
        transform: translateY(0) rotate(0);
    }

    50% {
        transform: translateY(-11.5px) rotate(0);
    }

    100% {
        transform: translateY(-11.5px) rotate(-45deg);
    }
}

@keyframes btn07-bar01 {
    0% {
        transform: translateY(11.5px) rotate(45deg);
    }

    50% {
        transform: translateY(11.5px) rotate(0);
    }

    100% {
        transform: translateY(0) rotate(0);
    }
}

@keyframes btn07-bar03 {
    0% {
        transform: translateY(-11.5px) rotate(-45deg);
    }

    50% {
        transform: translateY(-11.5px) rotate(0);
    }

    100% {
        transform: translateY(0) rotate(0);
    }
}

@media (min-width: 768px) {
    .header-nav-group {
        display: flex;
        align-items: center;
        gap: 24px;
    }

    .desktop-nav {
        display: flex;
        gap: 1.5rem;
        align-items: center;
    }

    .header-cta {
        display: block;
    }

    .mobile-menu-btn {
        display: none;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: white;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

.hero-overlay-color {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 160, 176, 0.2);
    mix-blend-mode: overlay;
}

.hero-overlay-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding-left: 1rem;
    padding-right: 1rem;
}

.hero-subtitle-en {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: bold;
    line-height: 1;
    margin-top: 15px;
    margin-bottom: 1rem;
    clip-path: inset(0 100% 0 0);
    letter-spacing: 0.05rem;
    opacity: 0;
    animation: clipReveal 1.4s cubic-bezier(0.37, 0, 0.63, 1) forwards;
    animation-delay: 0.5s;
}

@keyframes clipReveal {
    0% {
        opacity: 0;
        clip-path: inset(0 100% 0 0);
    }

    100% {
        opacity: 0.9;
        clip-path: inset(0 0 0 0);
    }
}

.hero-subtitle-jp {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.05rem;
    line-height: 1.5;
    text-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Mask Reveal Animation */
.mask-bg {
    color: transparent;
    position: relative;
    overflow: hidden;
    /* display: inline-block; */
    animation: maskTextColor 0s forwards;
    animation-delay: 2.5s;
}

@keyframes maskTextColor {
    to {
        color: inherit;
    }
}

.mask-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, #00A2BA 0%, #76CACD 100%);
    transform: translateX(-101%);
    animation: maskRevealLR 1.2s cubic-bezier(0.8, 0, 0.17, 1) forwards;
    animation-delay: 1.9s;
}

@keyframes maskRevealLR {
    0% {
        transform: translateX(-101%);
    }

    40%,
    60% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(101%);
    }
}

@media (min-width: 768px) {
    .hero-subtitle-en {
        font-size: 1.25rem;
    }

    .hero-subtitle-jp {
        font-size: 1.5rem;
    }

    .hero-title {
        font-size: 3rem;
    }
}

@media (min-width: 1024px) {
    .hero-subtitle-en {
        font-size: 2.5rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }
}

/* Animations */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    animation: bounce 2s infinite;
    z-index: 10;
}

.scroll-text {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* Section Common */
.section {
    padding-top: 5rem;
    padding-bottom: 5rem;
    position: relative;
}

@media (min-width: 768px) {
    .section {
        padding-top: 7rem;
        padding-bottom: 7rem;
    }
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title-en {
    background: linear-gradient(to right, #00A2BA, #76CACD);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title-jp {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

@media (min-width: 768px) {
    .section-title-en {
        font-size: 3rem;
    }
}

/* About Section */
.about-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .about-content {
        flex-direction: row;
    }
}

.about-image-wrapper {
    width: 100%;
    position: relative;
}

@media (min-width: 768px) {
    .about-image-wrapper {
        width: 50%;
    }
}

.about-image-frame {
    position: relative;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    aspect-ratio: 4 / 3;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s;
}

.about-image-wrapper:hover .about-image {
    transform: scale(1.05);
}

.about-decor-bl {
    position: absolute;
    bottom: -1rem;
    left: -1rem;
    width: 6rem;
    height: 6rem;
    border-bottom: 4px solid var(--color-primary);
    border-left: 4px solid var(--color-primary);
    z-index: 10;
}

.about-decor-tr {
    position: absolute;
    top: -1rem;
    right: -1rem;
    width: 6rem;
    height: 6rem;
    border-top: 4px solid var(--color-primary);
    border-right: 4px solid var(--color-primary);
    z-index: 10;
}

.about-text {
    width: 100%;
    background-image: url('../img/img-about02.png');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

@media (min-width: 768px) {
    .about-text {
        width: 50%;
    }
}

.about-heading {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.375;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .about-heading {
        font-size: 1.875rem;
    }
}

.about-desc {
    color: var(--color-text-muted);
    line-height: 1.625;
}

.about-desc p {
    margin-bottom: 1rem;
}

/* Service Section */
.service-section {
    background-color: #EDF7F8;
    transition: background-color 0.3s;
}

.service-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-radius: 0.5rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
}

.service-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.service-card-header {
    background-color: var(--color-primary);
    color: white;
    text-align: center;
    padding: 1rem 0;
    font-weight: 700;
    letter-spacing: 0.2em;
    font-size: 1.125rem;
}

.service-card-image {
    position: relative;
    height: 12.5rem;
    overflow: hidden;
}

.service-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.service-card:hover .service-card-image img {
    transform: scale(1.1);
}

.service-card-body {
    padding: 1.5rem;
    flex-grow: 1;
}

.service-card-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 2;
}

/* Contact CTA (Middle) */
.contact-cta-section {
    padding-top: 4rem;
    padding-bottom: 4rem;
    background: linear-gradient(90deg, #00A2BA, #76CACD);
    color: white;
    position: relative;
}

.pattern-dots {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
}

.contact-cta-card {
    background-color: white;
    text-align: center;
    padding: 2.5rem 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    max-width: 56rem;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 10;
}

@media (min-width: 768px) {
    .contact-cta-card {
        padding-left: 3rem;
        padding-right: 3rem;
    }
}

.contact-cta-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.contact-cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.contact-cta-buttons .btn-secondary,
.contact-cta-buttons .btn-primary-large {
    width: 250px;
    justify-content: center;
}

@media (min-width: 768px) {
    .contact-cta-buttons {
        flex-direction: row;
    }
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 0.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.3s;
    white-space: nowrap;
}

.btn-secondary:hover {
    background-color: rgba(0, 191, 165, 0.9);
}

.btn-primary-large {
    background-color: var(--color-primary);
    color: white;
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 0.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.3s;
}

.btn-primary-large:hover {
    opacity: 0.8;
}

/* Works Section */
#works {
    background-color: #EDF7F8;
}

.works-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .works-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .works-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.work-card {
    background-color: white;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: none;
}

.work-card-header {
    display: flex;
    width: 100%;
}

.work-header-label {
    width: 50%;
    text-align: center;
    padding: 0.5rem 0;
    font-weight: 700;
    color: white;
    font-size: 1rem;
}

.work-header-label.before {
    background-color: #6b7280;
    /* Gray-500 */
}

.work-header-label.after {
    background-color: var(--color-primary);
}

.work-images {
    display: flex;
    height: 14rem;
    position: relative;
}

.work-image-half {
    width: 50%;
    position: relative;
}

.work-image-half img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.work-image-half:first-child img {
    border-right: 1px solid #fff;
}

.play-icon-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.play-icon-bg {
    background-color: var(--color-primary);
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.play-icon-bg .material-icons {
    color: var(--color-background);
    font-size: 2rem;
    margin-left: 0.2rem;
}

.work-card-body {
    padding: 1.5rem;
}

.work-tag {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    margin-bottom: 0.75rem;
}

.work-title {
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: #4b5563;
}

.work-date {
    font-size: 0.875rem;
    color: #9ca3af;
    font-family: inherit;
}

/* Profile Section */
.profile-card {
    max-width: 56rem;
    margin-left: auto;
    margin-right: auto;
    background-color: white;
}

.profile-list {
    display: grid;
    grid-template-columns: 1fr;
}

.profile-item {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    border-bottom: 1px solid var(--color-primary);
}

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

@media (min-width: 768px) {
    .profile-item {
        grid-template-columns: repeat(3, 1fr);
    }
}

.profile-label {
    font-weight: 700;
    color: #4b5563;
}

.profile-value {
    color: var(--color-text-muted);
}

@media (min-width: 768px) {
    .profile-value {
        grid-column: span 2 / span 2;
    }
}

.profile-value-highlight {
    color: var(--color-primary);
}

.profile-value ul li {
    list-style-type: disc;
    list-style-position: outside;
    margin-left: 1.25rem;
}

/* Contact Bottom Section */
.contact-bottom {
    padding-top: 5rem;
    padding-bottom: 5rem;
    background: linear-gradient(90deg, #00A2BA, #76CACD);
    position: relative;
}

.contact-bottom .section-header {
    margin-bottom: 2.5rem;
}

.contact-bottom-card {
    background-color: white;
    text-align: center;
    padding: 2.5rem 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    max-width: 64rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .contact-bottom-card {
        padding-left: 4rem;
        padding-right: 4rem;
    }
}

.contact-bottom h2 {
    color: var(--color-primary);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .contact-bottom h2 {
        font-size: 3rem;
    }
}

.contact-button-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.contact-button-wrapper .btn-large {
    width: 100%;
    max-width: 20rem;
}

@media (min-width: 768px) {
    .contact-button-wrapper {
        flex-direction: row;
        gap: 1.5rem;
        justify-content: center;
    }

    .contact-button-wrapper .btn-large {
        width: 18rem;
        max-width: none;
    }
}

.contact-description {
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.contact-description-last {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.btn-large {
    font-size: 1.125rem;
    padding: 1rem 2.5rem;
    border-radius: 0.5rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, background-color 0.3s;
}

.btn-large:hover {
    transform: translateY(-0.25rem);
}

.scroll-top-btn {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background-color: var(--color-secondary);
    color: white;
    border-radius: 9999px;
    padding: 0.75rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (min-width: 768px) {
    .scroll-top-btn {
        bottom: 2.5rem;
        right: 2.5rem;
    }
}

/* Footer */
.site-footer {
    background-color: #2d2d2d;
    color: white;
    padding-top: 3rem;
    padding-bottom: 2rem;
    border-top: 1px solid #4a5568;
}

.footer-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        align-items: center;
    }
}

.footer-info {
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-info {
        margin-bottom: 0;
    }
}

.footer-title {
    font-family: 'Manrope', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.footer-address {
    font-size: 0.875rem;
    color: #a0aec0;
}

.copyright {
    border-top: 1px solid #4a5568;
    padding-top: 2rem;
    text-align: center;
}

.copyright p {
    font-size: 0.75rem;
    color: #a0aec0;
}

/* Scroll Top Button */
.scroll-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    background-color: var(--color-primary);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    text-decoration: none;
}

.scroll-top-btn.show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    cursor: pointer;
}

.scroll-top-btn:hover {
    opacity: 0.8;
}

@media (min-width: 768px) {
    .scroll-top-btn {
        right: 2rem;
    }
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background-color: #fff;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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


.mobile-menu-content {
    padding: 60px 40px 40px;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.mobile-menu-nav a {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--color-primary);
    padding-bottom: 0.5rem;
    text-decoration: none;
}

.mobile-menu-nav a .en {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.mobile-menu-nav a .jp {
    font-size: 1rem;
    color: var(--color-primary);
    margin-top: 0.25rem;
}

.mobile-menu-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: auto;
}

.mobile-menu-cta a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    height: 60px;
    border-radius: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
}

.btn-tel {
    background-color: var(--color-secondary);
}

.btn-mail {
    background-color: var(--color-primary);
}

/* Universal Scroll Fade-up Animation */
.anim-box {
    opacity: 0;
}

.anim-box.fadeup.is-animated {
    animation: fadeup 1s cubic-bezier(0.33, 1, 0.68, 1) forwards;
}

@keyframes fadeup {
    0% {
        transform: translateY(30px);
        opacity: 0;
    }

    80% {
        opacity: 1;
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}