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

:root {
    /* Color Palette */
    --primary-color: #1a3a52;
    --secondary-color: #2c5f7d;
    --accent-color: #c9a961;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Montserrat', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--bg-white);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Header
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

/* Navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 0;
    position: relative;
}

.nav-item > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-normal);
}

.nav-item > a:hover::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--accent-color);
    color: var(--bg-white);
    padding: 0.8rem 2rem !important;
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* Mega Menu */
.megamenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-white);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    margin-top: 1rem;
    min-width: 300px;
    padding: 2rem;
}

.has-megamenu:hover .megamenu {
    opacity: 1;
    visibility: visible;
    margin-top: 0.5rem;
}

.megamenu-container {
    display: flex;
    gap: 3rem;
}

.megamenu-section h3 {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.megamenu-section ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.megamenu-section a {
    color: var(--text-light);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    padding: 0.3rem 0;
    display: block;
}

.megamenu-section a:hover {
    color: var(--accent-color);
    padding-left: 0.5rem;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.3rem;
}

.lang-btn {
    background: none;
    border: none;
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    border-radius: 50px;
    transition: all var(--transition-fast);
}

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

.lang-btn.active {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.4rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-normal);
}

/* ========================================
   Hero Section
======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M0 50 Q 25 25, 50 50 T 100 50" stroke="rgba(255,255,255,0.05)" stroke-width="2" fill="none"/></svg>');
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--bg-white);
    max-width: 900px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    line-height: 1.8;
    opacity: 0.95;
}

.hero-cta {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--bg-white);
    padding: 1.2rem 3rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover {
    background-color: var(--bg-white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

/* ========================================
   Section Common Styles
======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Services Section
======================================== */
.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.service-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-description {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    color: var(--accent-color);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.service-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: margin-left var(--transition-fast);
}

.service-link:hover::after {
    margin-left: 1rem;
}

/* ========================================
   Areas Section
======================================== */
.areas {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.areas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: var(--spacing-lg);
}

.area-card {
    background-color: var(--bg-white);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.area-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--accent-color);
}

.area-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.area-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.area-link {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

/* ========================================
   Why Choose Us Section
======================================== */
.why-choose {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: var(--spacing-lg);
}

.feature {
    text-align: center;
}

.feature-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border-radius: 50%;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========================================
   CTA Sections
======================================== */
.cta-section {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--bg-white);
    padding: 1.2rem 3rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.cta-button:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.final-cta {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--bg-white);
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cta-text {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.cta-button-large {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--bg-white);
    padding: 1.3rem 4rem;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.cta-button-large:hover {
    background-color: var(--bg-white);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

/* ========================================
   Footer
======================================== */
.footer {
    background-color: var(--primary-color);
    color: var(--bg-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-description {
    opacity: 0.8;
    line-height: 1.7;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-color);
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    text-align: center;
}

.copyright {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 1rem 1.5rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem;
        gap: 1.5rem;
        transition: left var(--transition-normal);
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .megamenu {
        position: static;
        transform: none;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        margin-top: 0.5rem;
        padding: 1rem 0;
        width: 100%;
    }
    
    .lang-switcher {
        margin-top: auto;
    }
    
    .hero {
        height: 80vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .services-grid,
    .areas-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .service-card,
    .area-card {
        padding: 1.5rem;
    }
}