/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
    --bg-color: #FFFFFF;
    --text-color: #333333;
    --accent-color: #007AFF;
    --accent-hover: #0056b3;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --font-main: 'Noto Sans JP', sans-serif;
    --code-bg: #f5f5f7;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* Header */
header {
    text-align: center;
    padding: 60px 0 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #111;
}

header .description {
    font-size: 1.1rem;
    color: #666;
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    padding-bottom: 60px;
}

@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Card */
.card {
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card-image-container {
    width: 100%;
    overflow: hidden;
    cursor: pointer;
    border-bottom: 1px solid #eee;
}

.card-image {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.card:hover .card-image {
    transform: scale(1.02);
}

.card-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
    color: #111;
}

.prompt-block {
    background-color: var(--code-bg);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
    overflow-x: auto;
    flex-grow: 1;
    border: 1px solid #e1e1e1;
    max-height: 200px;
    /* カードが高くなりすぎないように制限 */
    overflow-y: auto;
}

.prompt-block pre {
    margin: 0;
    white-space: pre-wrap;
    /* コードの折り返し */
    word-break: break-all;
}

.prompt-block code {
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
    color: #444;
}

.copy-btn {
    background-color: #fff;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    width: 100%;
    text-align: center;
    font-family: var(--font-main);
}

.copy-btn:hover {
    background-color: var(--accent-color);
    color: #fff;
}

.copy-btn.copied {
    background-color: #34C759;
    /* Success Green */
    border-color: #34C759;
    color: #fff;
    pointer-events: none;
}

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid #eee;
    color: #888;
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    padding-top: 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);

    /* Flexbox centering */
    align-items: center;
    justify-content: center;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90vh;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    animation: zoom 0.3s;
}

@keyframes zoom {
    from {
        transform: scale(0)
    }

    to {
        transform: scale(1)
    }
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}