/* Reset and base styles */
:root {
    --main-color: #2d89ef;
    --accent-color: #fbbc05;
    --text-color: #333;
    --bg-color: #ffffff;
}

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

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

/* Header styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 50px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-list a:hover {
    color: var(--main-color);
}

/* Hero section with parallax */
.hero {
    height: 100vh;
    background-image: url('../images/hero-bg.jpg');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    color: white;
    padding: 2rem;
}

.main-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.sub-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--main-color);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    transition: transform 0.3s, background 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    background: #1a6cd1;
}

/* Features section */
.features {
    padding: 5rem 0;
    background: var(--bg-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card i {
    font-size: 3rem;
    color: var(--main-color);
    margin-bottom: 1rem;
}

/* Feature images */
.feature-image {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.feature-card:hover .feature-image {
    transform: scale(1.1);
}

/* Courses section */
.courses {
    padding: 5rem 0;
    background: #f8f9fa;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.course-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.more-button {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    margin-top: 1rem;
    background: var(--main-color);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    transition: background 0.3s;
}

.more-button:hover {
    background: #1a6cd1;
}

/* Course images */
.course-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px 10px 0 0;
    margin-bottom: 1rem;
}

/* Testimonials section */
.testimonials {
    padding: 5rem 0;
    background: var(--bg-color);
}

.testimonials-slider {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
}

.testimonial-text {
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: 700;
    color: var(--main-color);
}

/* Testimonial images */
.testimonial-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Footer styles */
.footer {
    background: #333;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-logo {
    height: 40px;
    margin-bottom: 1rem;
}

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

.footer-nav a {
    color: white;
    text-decoration: none;
    line-height: 2;
    transition: color 0.3s;
}

.footer-nav a:hover {
    color: var(--main-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-icon:hover {
    color: var(--main-color);
}

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Hamburger menu */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: 0.3s;
}

/* Responsive styles */
@media (max-width: 768px) {
    .nav-pc {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .main-title {
        font-size: 2.5rem;
    }

    .sub-title {
        font-size: 1.2rem;
    }

    .features-grid,
    .courses-grid,
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
}

/* Mobile menu */
.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: white;
    padding: 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: none;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu ul {
    list-style: none;
}

.mobile-menu a {
    display: block;
    padding: 0.5rem 0;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.mobile-menu a:hover {
    color: var(--main-color);
}