/* --- Global Styles & Variables --- */
:root {
    --primary-text: #333333;
    --background-light: #f4f4f4;
    --accent-pink: #d9a6a4;
    --accent-green: #6b8e23;
    --header-bg: #ffffff;
    --font-heading: 'Noto Serif JP', serif;
    --font-body: 'Roboto', sans-serif;
}

body {
    font-family: var(--font-body);
    margin: 0;
    color: var(--primary-text);
    background-color: #f0f8f0;
    background-image: 
        linear-gradient(135deg, rgba(107, 142, 35, 0.08) 0%, rgba(217, 166, 164, 0.08) 100%);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2 {
    font-family: var(--font-heading);
    color: var(--primary-text);
}

/* --- Reusable Page Content Wrapper --- */
.page-content {
    background-color: rgba(255, 255, 255, 0.95);
    background-image: 
        linear-gradient(135deg, rgba(107, 142, 35, 0.06) 0%, rgba(217, 166, 164, 0.06) 100%);
    padding: 40px 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    margin-top: 40px; /* Standard margin for content pages */
}

/* --- Header & Navigation (Shared on all pages) --- */
.main-header {
    background-color: var(--header-bg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-heading);
    color: var(--accent-green);
    margin: 0;
    font-size: 1.8rem;
}

.main-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 20px;
}

.main-nav a {
    text-decoration: none;
    color: var(--primary-text);
    font-weight: bold;
    padding: 5px 10px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent-pink);
    border-bottom-color: var(--accent-pink);
}

/* --- Footer (Shared on all pages) --- */
.main-footer {
    background-color: var(--primary-text);
    color: #ffffff;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

/* --- Responsive Design --- */
/* Tablets (768px to 1024px) */
@media (max-width: 1024px) {
    .container {
        max-width: 90%;
    }

    .logo {
        font-size: 1.6rem;
    }

    .main-nav ul {
        gap: 15px;
    }

    .main-nav a {
        padding: 5px 8px;
        font-size: 0.95rem;
    }

    .page-content {
        padding: 30px 15px;
        margin-top: 30px;
    }
}

/* Mobile Devices (up to 768px) */
@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }

    .main-header .container {
        flex-direction: column;
        gap: 15px;
    }

    .logo {
        font-size: 1.4rem;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 10px;
        width: 100%;
    }

    .main-nav a {
        display: block;
        padding: 8px 10px;
        text-align: center;
        border-bottom: 2px solid transparent;
    }

    h1, h2 {
        font-size: 1.5rem;
    }

    .page-content {
        padding: 20px 15px;
        margin-top: 20px;
        border-radius: 5px;
    }

    .main-footer {
        padding: 15px 0;
        font-size: 0.9rem;
    }
}

/* Small Mobile Devices (up to 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .main-nav a {
        padding: 6px 8px;
        font-size: 0.85rem;
    }

    h1 {
        font-size: 1.3rem;
    }

    h2 {
        font-size: 1.1rem;
    }

    .page-content {
        padding: 15px 10px;
        margin-top: 15px;
    }
}