/* ==================== 全局样式 ==================== */
:root {
    --primary: #3370ff;
    --primary-hover: #2860e1;
    --primary-light: #e8f0ff;
    --success: #34c759;
    --danger: #ff3b30;
    --warning: #ff9500;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* ==================== 布局 ==================== */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.app-header {
    text-align: center;
    padding: 24px 0;
    margin-bottom: 24px;
}

.app-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
}

.app-header .subtitle {
    color: var(--gray-500);
    font-size: 14px;
    margin-top: 4px;
}

.main-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 960px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* ==================== 面板 ==================== */
.panel {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 24px;
}

.panel h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gray-200);
}

/* ==================== 配置面板 ==================== */
.config-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-100);
}

.config-section:last-of-type {
    border-bottom: none;
}

.config-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 12px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group select[multiple] {
    min-height: 80px;
}

.form-group .hint {
    display: block;
    font-size: 12px;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    gap: 6px;
}

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

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

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

.btn-outline {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

.btn-row {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* ==================== 状态消息 ==================== */
.status-msg {
    margin-top: 8px;
    font-size: 13px;
    padding: 6px 10px;
    border-radius: var(--radius);
    display: none;
}

.status-msg.success {
    display: block;
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.status-msg.error {
    display: block;
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* ==================== 拖拽上传区域 ==================== */
.drop-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: var(--gray-50);
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.drop-zone-content .drop-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.drop-zone-content p {
    color: var(--gray-600);
    font-size: 15px;
}

.drop-zone-content .link {
    color: var(--primary);
    font-weight: 500;
    text-decoration: underline;
}

.drop-zone-content .hint {
    font-size: 13px;
    color: var(--gray-400);
    margin-top: 8px;
}

/* ==================== 图片预览 ==================== */
.preview-area {
    margin-top: 20px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--gray-600);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
    padding: 4px;
}

.image-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: border-color 0.2s;
    aspect-ratio: 1;
}

.image-item:hover {
    border-color: var(--primary);
}

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

.image-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

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

.image-item .image-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 11px;
    padding: 4px 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.image-item .image-index {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==================== 上传区域 ==================== */
.upload-section {
    margin-top: 20px;
}

/* ==================== 进度条 ==================== */
.progress-section {
    margin-top: 24px;
}

.progress-section h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.progress-bar-container {
    width: 100%;
    height: 12px;
    background: var(--gray-200);
    border-radius: 6px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #5b9aff);
    border-radius: 6px;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 8px;
}

/* ==================== 上传结果 ==================== */
.result-section {
    margin-top: 24px;
}

.result-section h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.result-content {
    padding: 16px;
    border-radius: var(--radius);
    font-size: 14px;
}

.result-content.success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.result-content.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.result-details {
    margin-top: 12px;
    max-height: 200px;
    overflow-y: auto;
}

.result-detail-item {
    padding: 6px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 13px;
}

.result-detail-item:last-child {
    border-bottom: none;
}

/* ==================== Toast 通知 ==================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    max-width: 360px;
}

.toast.success {
    background: #065f46;
    color: white;
}

.toast.error {
    background: #991b1b;
    color: white;
}

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== 图片预览弹窗 ==================== */
.preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
}

.preview-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-modal-content img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.preview-modal-close {
    position: fixed;
    top: 16px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: none;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10001;
}

.preview-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.preview-modal-prev,
.preview-modal-next {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: none;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10001;
}

.preview-modal-prev { left: 20px; }
.preview-modal-next { right: 20px; }

.preview-modal-prev:hover,
.preview-modal-next:hover {
    background: rgba(255, 255, 255, 0.3);
}

.preview-modal-info {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    display: flex;
    gap: 16px;
    z-index: 10001;
}