/* image-resizer-style.css */

.tool-header {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--white-color);
    border-bottom: 1px solid var(--border-color);
}

.tool-header h1 {
    margin: 0;
    font-size: 32px;
}

.tool-container {
    background-color: var(--white-color);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 1200px;
    margin: 40px auto;
}

.resizer-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
}

/* --- 左側：設定パネル --- */
.settings-panel h3 {
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 15px;
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.3s, border-color 0.3s;
}

.drop-zone.drag-over {
    border-color: var(--primary-color);
    background-color: #e9f5ff;
}

.drop-zone i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.drop-zone p {
    margin: 0 0 15px 0;
    color: var(--light-text-color);
    font-size: 14px;
}

.tool-btn-secondary {
    padding: 10px 20px;
    font-size: 16px;
    font-weight: 500;
    background-color: var(--light-text-color);
    color: var(--white-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.tool-btn-secondary:hover {
    background-color: #555;
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 30px 0;
}

.option-group {
    margin-bottom: 20px;
}

.option-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

/* --- リサイズオプションのスタイル --- */
.resize-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    align-items: center;
    margin-bottom: 10px;
}

.input-group-inline {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.input-group-inline label {
    font-size: 14px;
    margin-bottom: 5px;
    font-weight: normal;
}

.input-group-inline div {
    display: flex;
    align-items: center;
    gap: 5px;
    width: 100%;
}

.input-group-inline input {
    flex-grow: 1;
    width: 100%;
    /* 幅を親要素に合わせる */
    padding: 8px;
    font-size: 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
}

.checkbox-group label {
    font-weight: normal;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

input[type="range"] {
    width: 100%;
}

.download-btn {
    width: 100%;
    padding: 12px;
    font-size: 18px;
    background-color: #28a745;
    color: var(--white-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.download-btn:hover {
    background-color: #218838;
}

.download-btn:disabled {
    background-color: #aaa;
    cursor: not-allowed;
}


/* --- 右側：プレビューパネル --- */
.preview-panel {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    min-height: 400px;
}

.preview-panel h3 {
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 20px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
}

.preview-item {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    background-color: var(--white-color);
}

.preview-item canvas {
    width: 100%;
    height: auto;
    display: block;
}

.preview-info {
    padding: 8px;
    font-size: 12px;
    text-align: center;
    background-color: var(--bg-color);
}

.file-name {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    font-weight: 500;
}

.original-size {
    display: block;
    color: var(--light-text-color);
    font-size: 11px;
    margin-top: 4px;
    /* ファイル名との間に余白を追加 */
}

.placeholder-text {
    color: var(--light-text-color);
    text-align: center;
    padding: 50px 0;
}

@media (max-width: 900px) {
    .resizer-layout {
        grid-template-columns: 1fr;
    }

    .preview-panel {
        margin-top: 30px;
    }
}