:root {
    --primary-color: #2e7d32;
    --primary-hover: #1b5e20;
    --accent-color: #e65100;
    --bg-color: #fdfbf7;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-muted: #666666;
    --border-color: #e0e0e0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, #2e7d32 0%, #4caf50 100%);
    color: #ffffff;
    text-align: center;
    padding: 3rem 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

header p {
    font-size: 1.1rem;
    opacity: 0.95;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.intro {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    border-left: 6px solid var(--primary-color);
}

.intro h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
}

/* 下処理ページへの導線バナー */
.prep-link-box {
    background-color: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.prep-link-content h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
}

.prep-link-content p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* 共通ボタン */
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #ffffff;
    text-decoration: none;
    padding: 0.7rem 1.4rem;
    border-radius: 25px;
    font-weight: bold;
    font-size: 0.95rem;
    transition: background-color 0.2s ease;
    white-space: nowrap;
}

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

.section-title {
    font-size: 1.6rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin: 2rem 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 下処理カード（prep.html用） */
.prep-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.prep-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.step-num {
    display: inline-block;
    background-color: var(--accent-color);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: bold;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    margin-bottom: 0.75rem;
}

.prep-card h3 {
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

/* レシピグリッド */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.recipe-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease;
}

.recipe-card:hover {
    transform: translateY(-4px);
}

.recipe-header {
    background-color: #f4f8f4;
    padding: 1.2rem;
    border-bottom: 1px solid var(--border-color);
}

.recipe-tag {
    display: inline-block;
    background-color: var(--accent-color);
    color: #fff;
    font-size: 0.8rem;
    font-weight: bold;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    margin-bottom: 0.5rem;
}

.recipe-card h3 {
    font-size: 1.3rem;
    color: var(--text-color);
}

.recipe-body {
    padding: 1.25rem;
    flex-grow: 1;
}

.ingredients {
    margin-bottom: 1rem;
    background-color: #fafafa;
    padding: 0.8rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

.ingredients h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    border-bottom: 1px dashed #ccc;
    padding-bottom: 0.2rem;
}

.ingredients ul {
    list-style: none;
}

.ingredients li {
    display: flex;
    justify-content: space-between;
    padding: 0.2rem 0;
}

.instructions h4 {
    font-size: 0.95rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.instructions ol {
    padding-left: 1.2rem;
    font-size: 0.95rem;
}

.instructions li {
    margin-bottom: 0.5rem;
}

.tips-box {
    background-color: #fff8e1;
    border: 1px solid #ffe082;
    border-radius: 10px;
    padding: 1.25rem;
    margin-top: 2.5rem;
}

.tips-box h3 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.nav-box {
    text-align: center;
    margin-top: 2rem;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    margin-top: 3rem;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.6rem;
    }
    .container {
        padding: 1rem;
    }
}