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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #e2e8f0;
    background-color: #0f172a;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: #f8fafc;
}

h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: #cbd5e1;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: #f59e0b;
    color: #1a1f3a;
}

.btn-primary:hover {
    background-color: #d97706;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: #f59e0b;
    border-color: #f59e0b;
}

.btn-secondary:hover {
    background-color: #f59e0b;
    color: #1a1f3a;
}

.btn-product {
    background-color: #1a1f3a;
    color: #f59e0b;
    border: 1px solid #4a5568;
    width: 100%;
    margin-top: 1rem;
}

.btn-product:hover {
    background-color: #4a5568;
    color: #ffffff;
}

/* Header */
.header {
    background-color: rgba(26, 31, 58, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid #4a5568;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    flex-shrink: 0;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #f8fafc;
    margin: 0;
}

.brand-tagline {
    font-size: 0.9rem;
    color: #f59e0b;
    margin: 0;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1a1f3a 0%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(45deg, transparent 0%, rgba(245, 158, 11, 0.1) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #f8fafc;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #cbd5e1;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    position: relative;
}

.weather-map,
.monitoring-dashboard,
.turbulence-map,
.route-map,
.safety-analysis,
.time-efficiency,
.airport-weather {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid #64748b;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #f8fafc;
}

/* Features Overview */
.features-overview {
    background-color: #1a1f3a;
    text-align: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: #0f172a;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #4a5568;
}

.feature-card:hover {
    border-color: #f59e0b;
    transform: translateY(-4px);
}

.feature-icon {
    margin-bottom: 1rem;
}

.feature-card h4 {
    margin-bottom: 1rem;
    color: #f59e0b;
}

/* Monitoring Section */
.monitoring {
    background-color: #0f172a;
    text-align: center;
}

.monitoring-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.feature-list {
    list-style: none;
    margin-top: 1.5rem;
}

.feature-list li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
    color: #cbd5e1;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #f59e0b;
    font-weight: bold;
}

.monitoring-dashboard {
    height: 350px;
    border-radius: 12px;
}

/* Turbulence Section */
.turbulence {
    background-color: #1a1f3a;
    text-align: center;
}

.turbulence-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.turbulence-map {
    height: 350px;
    border-radius: 12px;
}

/* Route Optimization */
.route-optimization {
    background-color: #0f172a;
    text-align: center;
}

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

.optimization-card {
    background-color: #1a1f3a;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #4a5568;
}

.optimization-card:hover {
    border-color: #f59e0b;
}

.optimization-card .placeholder-image {
    height: 200px;
    margin-bottom: 0;
    border-radius: 12px 12px 0 0;
}

.route-map,
.safety-analysis,
.time-efficiency {
    border-radius: 12px 12px 0 0;
}


.optimization-card h4,
.optimization-card p {
    padding: 0 1.5rem;
}

.optimization-card h4 {
    padding-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: #f59e0b;
}

.optimization-card p {
    padding-bottom: 1.5rem;
}

/* Airport Alerts */
.airport-alerts {
    background-color: #1a1f3a;
    text-align: center;
}

.alerts-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.alert-types {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.alert-type {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #0f172a;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: 1px solid #4a5568;
}

.alert-icon {
    width: 16px;
    height: 16px;
    border-radius: 50%;
}

.alert-icon.crosswind { background-color: #f59e0b; }
.alert-icon.windshear { background-color: #ef4444; }
.alert-icon.microburst { background-color: #a855f7; }

.airport-weather {
    height: 350px;
    border-radius: 12px;
}

/* Products Section */
.products {
    background-color: #0f172a;
    text-align: center;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: #1a1f3a;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #4a5568;
}

.product-card:hover {
    border-color: #f59e0b;
    transform: translateY(-4px);
}

.product-card h4 {
    color: #f59e0b;
    margin-bottom: 1rem;
}

.product-price {
    font-size: 1.2rem;
    font-weight: 600;
    color: #f59e0b;
    margin: 1rem 0;
    text-align: center;
}

.product-features {
    list-style: none;
    margin: 1.5rem 0;
}

.product-features li {
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1.5rem;
    color: #cbd5e1;
    font-size: 0.9rem;
}

.product-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #f59e0b;
}

/* Why Choose Section */
.why-choose {
    background-color: #1a1f3a;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background-color: #0f172a;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #4a5568;
    position: relative;
}

.benefit-card:hover {
    border-color: #f59e0b;
}

.benefit-number {
    font-size: 2rem;
    font-weight: 700;
    color: #f59e0b;
    margin-bottom: 1rem;
}

.benefit-card h4 {
    margin-bottom: 1rem;
    color: #f8fafc;
}

/* Contacts Section */
.contacts {
    background-color: #0f172a;
    text-align: center;
}

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

.contact-card {
    background-color: #1a1f3a;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #4a5568;
}

.contact-card:hover {
    border-color: #f59e0b;
}

.contact-icon {
    margin-bottom: 1rem;
}

.contact-card h4 {
    color: #f59e0b;
    margin-bottom: 1rem;
}

.contact-card p {
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background-color: #1a1f3a;
    border-top: 1px solid #4a5568;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-brand h4 {
    color: #f8fafc;
    margin-bottom: 0.25rem;
}

.footer-brand p {
    color: #f59e0b;
    font-size: 0.9rem;
    margin: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h5 {
    color: #f59e0b;
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: #cbd5e1;
    text-decoration: none;
}

.footer-column a:hover {
    color: #f59e0b;
}

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

.footer-bottom p {
    color: #64748b;
    margin: 0;
}

/* Navigation Links */
.brand-name a,
.footer-brand h4 a {
    color: inherit;
    text-decoration: none;
}

.brand-name a:hover,
.footer-brand h4 a:hover {
    color: #f59e0b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .monitoring-content,
    .turbulence-content,
    .alerts-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .optimization-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .alert-types {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}