:root {
    --bg-color: #faf6ed;
    --card-bg: #ffffff;
    --card-alt-bg: #fffbf3;
    --text-primary: #2a2620;
    --text-secondary: #6b5f4a;
    --border-color: #e8dfce;
    --primary-color: #0184ff;
    --success-color: #3d7a5f;
    --error-color: #c85a3a;
    --border-radius: 12px;
    --btn-radius: 8px;
    --spacing: 1.5rem;
}

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

body {
    font-family: 'Microsoft JhengHei', 'PingFang TC', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    border: 1px solid var(--border-color);
}

section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* DropZone 樣式 */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    min-height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--card-alt-bg);
}

.drop-zone:hover {
    border-color: var(--primary-color);
    background-color: #f5f0e8;
}

.drop-zone.dragover {
    border-color: var(--primary-color);
    background-color: #e8f4ff;
}

.drop-zone-content {
    text-align: center;
    color: var(--text-secondary);
}

.upload-icon {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.hint {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.error-message {
    color: var(--error-color);
    margin-top: 0.5rem;
    font-size: 0.9rem;
    min-height: 1.5rem;
}

/* 預覽區樣式 */
.hidden {
    display: none !important;
}

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

.preview-card {
    background-color: var(--card-alt-bg);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.preview-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.image-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
}

.image-preview img {
    max-width: 100%;
    max-height: 200px;
    object-fit: contain;
}

.ocr-result {
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
}

.result-text {
    font-size: 4rem;
    font-weight: bold;
    color: var(--primary-color);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 0.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.char-input {
    margin-bottom: 1.5rem;
}

.char-input label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.char-input input {
    width: 100%;
    max-width: 200px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--btn-radius);
    font-size: 1.2rem;
    font-family: inherit;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.char-input input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 按鈕樣式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--btn-radius);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: #0166cc;
}

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

.btn-success:hover:not(:disabled) {
    background-color: #2d6347;
}

/* 下載區樣式 */
.download-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.font-info {
    flex: 1;
    min-width: 200px;
}

.font-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.font-info p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.font-info strong {
    color: var(--text-primary);
}

#fontChar {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 使用說明樣式 */
.instruction-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.step-number {
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 按鈕區樣式 */
.button-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    border: 1px solid var(--border-color);
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 1rem;
    background-color: var(--card-alt-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
}

.action-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    background-color: #f5f0e8;
    transform: translateY(-2px);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.action-btn svg {
    color: var(--text-secondary);
}

.action-btn:not(:disabled) svg {
    color: var(--primary-color);
}

/* 內容區樣式 */
.content-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    border: 1px solid var(--border-color);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 0;
}

.close-btn {
    width: 32px;
    height: 32px;
    border: none;
    background-color: var(--card-alt-bg);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.close-btn:hover {
    background-color: var(--error-color);
    color: white;
}

/* 狀態資訊 */
.status-info {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--card-alt-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.status-info p {
    margin: 0;
    color: var(--text-secondary);
}

.status-info strong {
    color: var(--text-primary);
}

/* 修改區樣式 */
.edit-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.current-char {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--card-alt-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.current-char p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.char-display {
    font-size: 4rem;
    font-weight: bold;
    color: var(--primary-color);
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 下載內容樣式 */
.download-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

/* 下載動作按鈕區 */
.download-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 次要按鈕樣式 */
.btn-secondary {
    background-color: var(--text-secondary);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #5a4e3a;
}

/* 已建立字元區樣式 */
.char-list-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    border: 1px solid var(--border-color);
}

.char-list-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.char-list-info {
    margin-bottom: 1rem;
}

.char-list-info p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.char-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.char-item {
    background-color: var(--card-alt-bg);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.char-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.char-preview {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

.char-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.char-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.char-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.char-code {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border: none;
    background-color: var(--error-color);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    opacity: 0;
}

.char-item:hover .remove-btn {
    opacity: 1;
}

.remove-btn:hover {
    background-color: #a8482a;
    transform: scale(1.1);
}

.empty-message {
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    padding: 2rem;
    grid-column: 1 / -1;
}

.char-list-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

/* 標籤頁樣式 */
.instruction-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background-color: var(--card-alt-bg);
    border-radius: var(--btn-radius);
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tab-btn:hover {
    border-color: var(--primary-color);
    background-color: #f5f0e8;
}

.tab-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 作者展示區樣式 */
.author-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    border: 1px solid var(--border-color);
}

.author-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.author-image {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--border-color);
    flex-shrink: 0;
}

.author-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.author-info p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .button-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }

    .download-content {
        flex-direction: column;
        align-items: stretch;
    }

    .author-content {
        flex-direction: column;
        text-align: center;
    }

    .author-image {
        width: 80px;
        height: 80px;
    }
}