/* リセットとベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #d946ef;
    --secondary-color: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #fdf4ff 0%, #f3e8ff 50%, #e9d5ff 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-ja {
    display: block;
    font-family: 'Noto Serif JP', serif;
}

.title-en {
    display: block;
    font-size: 1.5rem;
    font-weight: 300;
    opacity: 0.8;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* メインコンテンツ */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

/* アップロードセクション */
.upload-section {
    width: 100%;
    max-width: 600px;
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 60px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 2px dashed var(--border-color);
}

.upload-section.dragover {
    border-color: var(--primary-color);
    background: rgba(217, 70, 239, 0.05);
    transform: scale(1.02);
}

.upload-button {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 30px 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    font-weight: 500;
}

.upload-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(217, 70, 239, 0.3);
}

.upload-button svg {
    width: 48px;
    height: 48px;
}

.hint {
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* プレビューセクション */
.preview-section {
    width: 100%;
    max-width: 800px;
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
}

.image-container {
    width: 100%;
    margin-bottom: 30px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

#previewImage {
    width: 100%;
    height: auto;
    display: block;
}

/* コントロール */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.language-selector {
    display: flex;
    gap: 20px;
}

.language-selector label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
}

.language-selector input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.generate-button {
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.generate-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(217, 70, 239, 0.3);
}

/* 俳句表示 */
.haiku-display {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #fdf4ff, #f3e8ff);
    border-radius: 15px;
    margin-bottom: 30px;
}

.haiku-text {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.8rem;
    line-height: 2.2;
    color: var(--text-primary);
    font-weight: 400;
    letter-spacing: 0.05em;
}

.haiku-info {
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* アクションボタン */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button {
    padding: 12px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-button {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(217, 70, 239, 0.3);
}

.secondary-button {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.secondary-button:hover {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* フッター */
footer {
    text-align: center;
    padding: 40px 0 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ローディング */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    gap: 20px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: white;
    font-size: 1.1rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .title-en {
        font-size: 1.2rem;
    }
    
    .upload-section {
        padding: 40px 20px;
    }
    
    .upload-button {
        padding: 20px 30px;
        font-size: 1rem;
    }
    
    .preview-section {
        padding: 20px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .language-selector {
        justify-content: center;
    }
    
    .generate-button {
        width: 100%;
    }
    
    .haiku-text {
        font-size: 1.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .primary-button,
    .secondary-button {
        width: 100%;
    }
}

/* アニメーション */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.haiku-display,
.action-buttons {
    animation: fadeIn 0.5s ease;
}

/* プリント用スタイル */
@media print {
    body {
        background: white;
    }
    
    header,
    footer,
    .controls,
    .action-buttons,
    .upload-section {
        display: none;
    }
    
    .preview-section {
        box-shadow: none;
        padding: 0;
    }
    
    .haiku-display {
        background: white;
        border: 1px solid #ddd;
    }
}