/* ===================================
   Benten Japan - Corporate Website
   =================================== */

:root {
    --primary-color: #1a365d;
    --secondary-color: #2c5282;
    --accent-color: #ed8936;
    --text-color: #2d3748;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --error-color: #f56565;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.8;
    font-size: 16px;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color);
}

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

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

/* ===================================
   Header & Navigation
   =================================== */

header {
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    color: var(--text-color);
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: 0.3s;
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 150px 20px 100px;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-block;
    padding: 15px 40px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background: #dd6b20;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: white;
    color: var(--primary-color);
}

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

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

/* ===================================
   Sections
   =================================== */

section {
    padding: 100px 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* ===================================
   Features / Services Grid
   =================================== */

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

.feature-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
}

/* ===================================
   About Section
   =================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-light);
}

.about-image {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 4rem;
}

/* ===================================
   Company Info Table
   =================================== */

.company-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
}

.company-table th,
.company-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.company-table th {
    width: 200px;
    background: var(--bg-light);
    color: var(--primary-color);
    font-weight: 600;
}

/* ===================================
   Contact Form
   =================================== */

.contact-section {
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group label .required {
    color: var(--error-color);
    margin-left: 5px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===================================
   Legal Pages (Terms, Privacy)
   =================================== */

.legal-page {
    padding-top: 120px;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

.legal-content h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
}

.legal-content h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.legal-content h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin: 25px 0 15px;
}

.legal-content p {
    margin-bottom: 15px;
    color: var(--text-light);
}

.legal-content ul,
.legal-content ol {
    margin: 15px 0 15px 25px;
    color: var(--text-light);
}

.legal-content li {
    margin-bottom: 10px;
}

.last-updated {
    text-align: right;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 40px;
}

/* ===================================
   Footer
   =================================== */

footer {
    background: var(--primary-color);
    color: white;
    padding: 60px 20px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    color: white;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-bottom {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    opacity: 0.7;
    font-size: 0.9rem;
}

/* ===================================
   Page Headers
   =================================== */

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 150px 20px 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    opacity: 0.9;
    font-size: 1.1rem;
}

/* ===================================
   News / Blog
   =================================== */

.news-list {
    max-width: 800px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    gap: 20px;
    padding: 25px 0;
    border-bottom: 1px solid var(--border-color);
}

.news-date {
    background: var(--primary-color);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    text-align: center;
    flex-shrink: 0;
}

.news-date .day {
    font-size: 1.5rem;
    font-weight: bold;
    display: block;
}

.news-date .month {
    font-size: 0.8rem;
    opacity: 0.8;
}

.news-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.news-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.news-tag {
    display: inline-block;
    background: var(--bg-light);
    color: var(--secondary-color);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 10px;
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 968px) {
    .header-inner {
        padding: 15px;
    }

    nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        padding: 20px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    nav.active {
        transform: translateY(0);
    }

    nav ul {
        flex-direction: column;
        gap: 15px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .company-table th,
    .company-table td {
        display: block;
        width: 100%;
    }

    .company-table th {
        border-bottom: none;
        padding-bottom: 5px;
    }

    .company-table td {
        padding-top: 5px;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 120px 15px 60px;
        min-height: 60vh;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .section-title h2 {
        font-size: 1.75rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}