/* ========== 基础样式 ========== */
.book-form-container {
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

/* ========== 页头样式 ========== */
.page-header-wrapper {
    margin-bottom: 30px;
    background: linear-gradient(135deg, #ffffff 0%, #f0f4f8 100%);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title-section {
    display: flex;
    flex-direction: column;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    margin: 0;
    display: flex;
    align-items: center;
}

.page-title i {
    margin-right: 12px;
    color: #3498db;
    font-size: 24px;
}

.subtitle {
    margin: 5px 0 0 0;
    color: #7f8c8d;
    font-size: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-icon-text {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-icon-text i {
    font-size: 14px;
}

/* 进度条样式 */
.form-progress {
    min-width: 180px;
}

.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e9ecef;
    margin-bottom: 5px;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(45deg, #3498db, #2ecc71);
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 12px;
    color: #6c757d;
    text-align: right;
    display: block;
}

/* ========== 表单卡片样式 ========== */
.form-card {
    margin-bottom: 25px;
    border: none;
    border-radius: 10px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
    background-color: #ffffff;
    transition: all 0.3s ease;
    overflow: hidden;
}

.form-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.card-header {
    padding: 16px 20px;
    background: linear-gradient(90deg, rgba(248,249,250,1) 0%, rgba(255,255,255,1) 100%);
    border-bottom: 1px solid #edf2f7;
    display: flex;
    align-items: center;
}

.card-header-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background-color: rgba(52, 152, 219, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
}

.card-header-icon i {
    color: #3498db;
    font-size: 16px;
}

.card-header-title {
    font-weight: 600;
    color: #2c3e50;
    font-size: 16px;
}

.card-body {
    padding: 25px;
}

.form-section {
    padding: 0;
}

/* ========== 表单元素样式 ========== */
.form-label {
    font-weight: 500;
    color: #34495e;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.label-icon {
    color: #3498db;
    margin-right: 8px;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.custom-input, .custom-select, .custom-textarea {
    height: calc(2.8rem + 2px);
    padding: 0.75rem 1rem;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.custom-input:focus, .custom-select:focus, .custom-textarea:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
    outline: none;
}

.custom-textarea {
    height: auto;
    min-height: 200px;
    resize: vertical;
    line-height: 1.6;
}

.input-group-text {
    background-color: #f8f9fa;
    border: 1px solid #e0e6ed;
    border-radius: 8px;
    color: #6c757d;
}

.form-text {
    margin-top: 6px;
    font-size: 13px;
    color: #6c757d;
}

/* 浮动标签效果 */
.form-group.focused .floating-label {
    transform: translateY(-22px) scale(0.85);
    color: #3498db;
    opacity: 1;
}

.floating-label {
    position: absolute;
    pointer-events: none;
    left: 1rem;
    top: 0.75rem;
    transition: 0.2s ease all;
    color: #95a5a6;
    opacity: 0.8;
}

.floating-input:focus + .floating-label,
.floating-input:not(:placeholder-shown) + .floating-label {
    transform: translateY(-22px) scale(0.85);
    color: #3498db;
    opacity: 1;
}

.floating-input {
    padding-top: 1.1rem;
    padding-bottom: 0.4rem;
}

/* 数字输入组 */
.input-number-group {
    display: flex;
    width: 100%;
}

.input-number-group input {
    text-align: center;
    border-radius: 0;
    border-left: none;
    border-right: none;
}

.input-number-group button {
    border-radius: 8px 0 0 8px;
}

.input-number-group button:last-child {
    border-radius: 0 8px 8px 0;
}

/* 价格滑块 */
.custom-range {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #e0e6ed;
    outline: none;
    margin: 10px 0;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #3498db;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: background 0.3s ease;
}

.custom-range::-webkit-slider-thumb:hover {
    background: #2980b9;
}

/* 标签输入 */
.tag-input-container {
    display: flex;
    gap: 10px;
}

.tag-input {
    flex-grow: 1;
}

.add-tag-btn {
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    background-color: rgba(52, 152, 219, 0.1);
    color: #3498db;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.tag-item:hover {
    background-color: rgba(52, 152, 219, 0.2);
}

.tag-item .remove-tag {
    margin-left: 8px;
    cursor: pointer;
    font-size: 12px;
    color: #3498db;
}

.tag-item .remove-tag:hover {
    color: #e74c3c;
}

/* 文本计数 */
.text-count {
    font-size: 12px;
    color: #7f8c8d;
}

.text-count.text-danger {
    color: #e74c3c;
}

/* ========== 封面上传区域 ========== */
.cover-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.cover-preview {
    width: 100%;
    height: 320px;
    border: 2px dashed #e0e6ed;
    border-radius: 10px;
    overflow: hidden;
    background-color: #f8f9fa;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.cover-preview.dragover {
    border-color: #3498db;
    background-color: rgba(52, 152, 219, 0.05);
}

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

.no-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #95a5a6;
    padding: 20px;
    text-align: center;
}

.no-cover-placeholder i {
    font-size: 64px;
    margin-bottom: 20px;
    color: #d0d0d0;
}

.placeholder-tip {
    font-size: 13px;
    margin-top: 10px;
    color: #7f8c8d;
}

.upload-options {
    width: 100%;
    padding: 0 20px;
}

.upload-btn-group {
    display: flex;
    gap: 10px;
}

.custom-upload-btn {
    flex-grow: 1;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: #3498db;
    border-color: #3498db;
    color: white;
}

.custom-upload-btn:hover {
    background-color: #2980b9;
    border-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.btn-icon {
    width: 42px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== 表单提交区域 ========== */
.form-submit-container {
    margin-top: 30px;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.secondary-buttons {
    display: flex;
    gap: 10px;
}

.submit-btn {
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
    background: linear-gradient(45deg, #3498db, #2980b9);
    border: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.reset-btn {
    padding: 12px;
    border-radius: 8px;
    font-weight: 500;
}

.form-tip {
    margin-top: 15px;
    font-size: 13px;
    color: #7f8c8d;
    text-align: center;
}

.form-tip i {
    color: #3498db;
    margin-right: 5px;
}

/* 必填项标记 */
.required {
    color: #e74c3c;
    margin-left: 4px;
    font-weight: bold;
}

/* 无效输入状态 */
.is-invalid {
    border-color: #e74c3c !important;
}

.invalid-feedback {
    display: block;
    color: #e74c3c;
    font-size: 13px;
    margin-top: 5px;
}

/* ========== 模态框样式 ========== */
.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.modal-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #edf2f7;
    padding: 15px 20px;
}

.modal-title {
    font-weight: 600;
    color: #2c3e50;
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    border-top: 1px solid #edf2f7;
    padding: 15px 20px;
    justify-content: space-between;
}

/* 裁剪模态框 */
.img-container {
    max-height: 500px;
    overflow: hidden;
}

#cropperImage {
    display: block;
    max-width: 100%;
}

.cropper-controls {
    display: flex;
    gap: 10px;
}

/* 图书预览模态框 */
.book-preview-container {
    padding: 10px;
}

.book-preview-cover {
    width: 100%;
    height: 300px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    background-color: #f8f9fa;
    margin-bottom: 20px;
}

.book-preview-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-preview-details {
    padding: 10px 0;
}

.book-preview-details h3 {
    margin: 0 0 5px 0;
    font-weight: 600;
    color: #2c3e50;
}

.book-author {
    color: #7f8c8d;
    font-size: 16px;
    margin-bottom: 20px;
}

.book-info-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.book-info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 13px;
    color: #7f8c8d;
    margin-bottom: 3px;
}

.info-value {
    font-weight: 500;
    color: #34495e;
}

.book-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.preview-tag {
    display: inline-block;
    background-color: rgba(52, 152, 219, 0.1);
    color: #3498db;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 13px;
}

.book-description {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

.book-description h4 {
    margin-top: 0;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.book-description p {
    color: #34495e;
    line-height: 1.6;
    margin: 0;
}

/* ========== 自定义通知样式 ========== */
.notification-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 350px;
}

.custom-notification {
    background: white;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    animation-duration: 0.5s;
    border-left: 4px solid #3498db;
}

.notification-success {
    border-color: #2ecc71;
}

.notification-error {
    border-color: #e74c3c;
}

.notification-warning {
    border-color: #f39c12;
}

.notification-info {
    border-color: #3498db;
}

.notification-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.notification-success .notification-icon i {
    color: #2ecc71;
}

.notification-error .notification-icon i {
    color: #e74c3c;
}

.notification-warning .notification-icon i {
    color: #f39c12;
}

.notification-info .notification-icon i {
    color: #3498db;
}

.notification-content {
    flex-grow: 1;
}

.notification-content p {
    margin: 0;
    font-size: 14px;
    color: #2c3e50;
}

.notification-close {
    background: none;
    border: none;
    color: #bdc3c7;
    cursor: pointer;
    padding: 5px;
    transition: color 0.3s ease;
}

.notification-close:hover {
    color: #7f8c8d;
}

/* ========== 动画效果 ========== */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(52, 152, 219, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(52, 152, 219, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

.pulse-icon {
    animation: pulse 2s infinite;
}

/* ========== 响应式样式 ========== */
@media (max-width: 1200px) {
    .book-form-container {
        padding: 20px;
    }

    .cover-preview {
        height: 280px;
    }
}

@media (max-width: 992px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
    }

    .book-info-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .book-form-container {
        padding: 15px 10px;
    }

    .page-title {
        font-size: 24px;
    }

    .subtitle {
        font-size: 14px;
    }

    .card-body {
        padding: 20px 15px;
    }

    .cover-preview {
        height: 240px;
    }

    .secondary-buttons {
        flex-direction: column;
    }

    .form-row {
        margin-right: -5px;
        margin-left: -5px;
    }

    .form-group {
        padding-right: 5px;
        padding-left: 5px;
    }
}