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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --text-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --gradient-start: #2563eb;
    --gradient-end: #7c3aed;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
}

#logo-svg {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
}

#logo-svg:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
}

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

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(124, 58, 237, 0.9) 100%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center;
    animation: backgroundMove 20s ease-in-out infinite;
}

@keyframes backgroundMove {
    0%, 100% { transform: scale(1) translateY(0); }
    50% { transform: scale(1.05) translateY(-20px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    padding: 40px 20px;
}

.hero-title {
    font-size: clamp(36px, 6vw, 72px);
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 28px);
    font-weight: 300;
    margin-bottom: 32px;
    letter-spacing: 0.1em;
    opacity: 0.95;
    font-family: 'Inter', sans-serif;
}

.hero-description {
    font-size: clamp(16px, 2vw, 20px);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.hero-btn {
    display: inline-block;
    padding: 16px 48px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--text-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.hero-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.scroll-indicator span {
    width: 2px;
    height: 12px;
    background: rgba(255, 255, 255, 0.6);
    animation: scroll 2s ease-in-out infinite;
}

.scroll-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.scroll-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes scroll {
    0%, 100% {
        opacity: 0.3;
        transform: scaleY(0.5);
    }
    50% {
        opacity: 1;
        transform: scaleY(1);
    }
}

/* Section Styles */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    font-weight: 300;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    font-family: 'Inter', sans-serif;
}

/* About Section */
.about {
    background: var(--bg-light);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.about-item {
    background: var(--bg-white);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.about-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.about-item-wide {
    grid-column: 1 / -1;
}

.about-label {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.about-value {
    font-size: 18px;
    color: var(--text-dark);
    font-weight: 400;
    line-height: 1.8;
}

/* Business Section */
.business {
    background: var(--bg-white);
}

.business-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.business-card {
    background: var(--bg-white);
    padding: 48px 32px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.business-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 20px;
    color: var(--text-white);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.business-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.business-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* Contact Section */
.contact {
    background: var(--bg-light);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 48px;
    line-height: 1.8;
}

.contact-info {
    background: var(--bg-white);
    padding: 48px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    text-align: left;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    color: var(--text-white);
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-size: 16px;
    color: var(--text-dark);
    line-height: 1.8;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    padding: 40px 0;
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-size: 14px;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        gap: 20px;
    }
    
    .nav-link {
        font-size: 14px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 60px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .business-cards {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .contact-details {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 16px 0;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .nav {
        gap: 16px;
    }
    
    .nav-link {
        font-size: 13px;
    }
    
    .hero-btn {
        padding: 14px 32px;
        font-size: 14px;
    }
    
    .about-item,
    .business-card,
    .contact-info {
        padding: 24px;
    }
}