/* Base Styles */
:root {
    --primary-color: #007a88; /* ホライゾングリーン */
    --secondary-color: #a47b67; /* モカ・ムース */
    --accent-color: #ff7e45; /* アクセントカラー（オレンジ） */
    --text-color: #333333;
    --light-text: #ffffff;
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 5rem 0;
}

.bg-light {
    background-color: #f0f4f8;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
}

.section-title {
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 3px;
}

.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: #666;
    font-size: 1.1rem;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    font-family: 'M PLUS Rounded 1c', sans-serif;
}

.logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--light-text);
    font-size: 1.5rem;
    cursor: pointer;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    position: relative;
    padding: 0.5rem 0;
    font-weight: 500;
    transition: var(--transition);
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--light-text);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-text);
    text-align: center;
    padding: 8rem 0 5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" fill-opacity="1" d="M0,224L48,213.3C96,203,192,181,288,181.3C384,181,480,203,576,224C672,245,768,267,864,250.7C960,235,1056,181,1152,165.3C1248,149,1344,171,1392,181.3L1440,192L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center bottom;
    opacity: 0.6;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-family: 'M PLUS Rounded 1c', sans-serif;
}

.hero p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* Button Styles */
.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--light-text);
    color: var(--light-text);
}

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

/* Card Styles */
.categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    border-top: 5px solid var(--primary-color);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--hover-shadow);
}

.card-header {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 1.2rem;
    font-weight: 500;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.card-header i {
    margin-right: 0.8rem;
    font-size: 1.3rem;
}

.card-body {
    padding: 1.8rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-body p {
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    color: #555;
    flex-grow: 1;
}

.card .btn {
    align-self: flex-start;
    margin-top: auto;
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2.5rem;
}

.filter-btn {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: var(--light-text);
}

/* Progress Section */
.progress-section {
    text-align: center;
    padding: 3rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.progress-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.progress-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.progress-section p {
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer Styles */
footer {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 3rem 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-family: 'M PLUS Rounded 1c', sans-serif;
    display: flex;
    align-items: center;
}

.footer-logo i {
    margin-right: 0.8rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.footer-links a {
    margin: 0 1rem;
    transition: var(--transition);
    position: relative;
    padding: 0.3rem 0;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--light-text);
    transition: var(--transition);
}

.footer-links a:hover::after {
    width: 100%;
}

.copyright {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Styles */
@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero {
        padding: 7rem 0 4rem;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        height: 0;
        overflow: hidden;
        transition: var(--transition);
    }

    nav.active {
        height: auto;
        padding: 1rem 0;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0.8rem 0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 80%;
        margin-bottom: 1rem;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 80%;
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 576px) {
    .section-padding {
        padding: 3rem 0;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .card-body {
        padding: 1.2rem;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links a {
        margin: 0.5rem 0;
    }
}