:root {
    --primary-color: #2563eb; /* A sleek blue */
    --primary-hover: #1d4ed8;
    --text-main: #1f2937;
    --text-light: #6b7280;
    --bg-main: #ffffff;
    --bg-alt: #f3f4f6;
    --border-color: #e5e7eb;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography & General */
.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-main);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* Language Toggle */
.lang-toggle {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.lang-toggle button {
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.3s ease;
}

.lang-toggle button:hover {
    color: var(--primary-color);
}

.lang-toggle button.active {
    color: var(--primary-color);
}

.lang-toggle span {
    color: var(--border-color);
    font-size: 0.9rem;
}

/* Hero Section (Company Name) */
.hero {
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url('shintaimg2.png') center/cover no-repeat;
    position: relative;
    overflow: hidden;
}

.hero::before, .hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.6;
    animation: floatOrb 20s infinite ease-in-out alternate;
    pointer-events: none;
}

.hero::before {
    width: 50vw;
    height: 50vw;
    min-width: 400px;
    min-height: 400px;
    background: rgba(37, 99, 235, 0.12); /* Primary blue */
    top: -20%;
    left: -10%;
}

.hero::after {
    width: 40vw;
    height: 40vw;
    min-width: 300px;
    min-height: 300px;
    background: rgba(96, 165, 250, 0.12); /* Lighter blue */
    bottom: -10%;
    right: -10%;
    animation-delay: -5s;
    animation-duration: 25s;
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(5vw, 5vh) scale(1.1); }
    66% { transform: translate(-3vw, 8vh) scale(0.9); }
    100% { transform: translate(0, 0) scale(1); }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.company-name {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--text-main);
    transition: all 0.3s ease;
    display: inline-block;
}

.company-name:hover {
    transform: scale(1.03);
    color: var(--primary-color);
    text-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.company-name .romaji {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-light);
    margin-left: 12px;
    vertical-align: middle;
    transition: all 0.3s ease;
}

.company-name:hover .romaji {
    color: var(--primary-color);
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.tagline:hover {
    transform: translateY(-3px);
    color: var(--text-main);
}

/* Services Section */
.services {
    padding: 6rem 0;
    background-color: var(--bg-main);
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease, border-color 0.4s ease, background-color 0.4s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
    transform: perspective(1000px) rotateX(0deg) rotateY(0deg) scale(1);
    transform-style: preserve-3d;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        800px circle at var(--mouse-x, 0) var(--mouse-y, 0),
        rgba(37, 99, 235, 0.06),
        transparent 40%
    );
    z-index: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
    opacity: 0;
}

.card:hover::before {
    opacity: 1;
}

.card-icon, .card-title, .card-desc {
    position: relative;
    z-index: 1;
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.6) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg);
    transition: left 0.7s ease;
    z-index: 1;
    pointer-events: none;
}

.card:hover {
    transition: transform 0.1s linear, box-shadow 0.4s ease, border-color 0.4s ease, background-color 0.4s ease;
    transform: perspective(1000px) rotateX(var(--rotate-x, 0deg)) rotateY(var(--rotate-y, 0deg)) scale(1.03);
    box-shadow: 0 25px 30px -5px rgba(37, 99, 235, 0.15), 0 15px 15px -5px rgba(37, 99, 235, 0.08);
    border-color: var(--primary-color);
    background-color: #fff0f5;
}

.card:hover::after {
    left: 200%;
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: inline-block;
}

.card:hover .card-icon {
    transform: scale(1.2) translateY(-8px);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.card-desc {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background-color: var(--bg-alt);
}

.contact-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-main);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2), 0 2px 4px -1px rgba(37, 99, 235, 0.1);
}

.submit-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.3), 0 4px 6px -2px rgba(37, 99, 235, 0.15);
}

.submit-btn:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 2px 4px -1px rgba(37, 99, 235, 0.2);
}

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    background-color: var(--bg-main);
    color: var(--text-light);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        height: 50vh;
        min-height: 350px;
    }
    .hero::before {
        min-width: 300px;
        min-height: 300px;
    }
    .hero::after {
        min-width: 250px;
        min-height: 250px;
    }
    .company-name {
        font-size: 2.5rem;
    }
    .company-name .romaji {
        font-size: 1.2rem;
        display: block;
        margin-left: 0;
        margin-top: 0.5rem;
    }
    .tagline {
        font-size: 1rem;
        padding: 0 1rem;
    }
    .section-title {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }
    .services, .contact {
        padding: 4rem 0;
    }
    .service-cards {
        grid-template-columns: 1fr;
    }
    .card {
        padding: 2.5rem 1.5rem;
    }
    .contact-form {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .company-name {
        font-size: 2rem;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .card-icon {
        font-size: 3rem;
    }
    .card-title {
        font-size: 1.1rem;
    }
    .submit-btn {
        padding: 0.8rem;
    }
}