/* メタタグチェッカー - カスタムスタイル */

:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #f1f5f9;
    --accent-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --hover-bg: #f8fafc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 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);
    --border-radius: 0.5rem;
}

body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic Medium', Meiryo, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-weight: 500;
}

/* フォームセクション */
.form-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.title-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--primary-color);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.label-text {
    color: var(--text-primary);
}

.required {
    background: var(--error-color);
    color: white;
    font-size: 0.7rem;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-weight: 500;
}

.form-input {
    padding: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.2s ease;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: -0.25rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.generate-btn, .clear-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    border: none;
}

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

.generate-btn:hover:not(:disabled) {
    background: var(--primary-dark);
}

.generate-btn:disabled {
    background: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.clear-btn {
    background: var(--border-color);
    color: var(--text-secondary);
}

.clear-btn:hover {
    background: #cbd5e1;
    color: var(--text-primary);
}

.btn-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

/* ローディングセクション */
.loading-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    text-align: center;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

/* 結果セクション */
.result-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.hidden {
    display: none;
}

/* メタ情報カテゴリ */
.meta-category {
    margin-bottom: 2rem;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.meta-item {
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.meta-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.meta-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.4;
    min-height: 1.4rem;
}

.meta-value:empty::before {
    content: '-';
    color: var(--text-secondary);
}


/* レスポンシブデザイン */
@media (max-width: 768px) {
    .max-w-5xl {
        padding: 1rem;
    }
    
    .py-20 {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }
    
    .form-section, .result-section, .loading-section {
        padding: 1.5rem;
    }
    
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .meta-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .form-section, .result-section, .loading-section {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .form-actions {
        gap: 0.75rem;
    }
    
    .generate-btn, .clear-btn {
        padding: 0.75rem 1rem;
        justify-content: center;
    }
    
    .meta-item {
        padding: 0.75rem;
    }
}