:root {
    --primary: #4a90d9;
    --primary-dark: #357abd;
    --success: #52c41a;
    --warning: #faad14;
    --danger: #ff4d4f;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text: #333333;
    --text-secondary: #666666;
    --border: #e8e8e8;
    --sidebar-bg: #2c3e50;
    --sidebar-text: #ecf0f1;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.sidebar .logo {
    padding: 0 20px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 10px;
}

.sidebar .logo h2 {
    font-size: 18px;
    color: #fff;
}

.sidebar .logo p {
    font-size: 12px;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

.sidebar nav a {
    display: block;
    padding: 12px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 14px;
    transition: background 0.2s;
    border-left: 3px solid transparent;
}

.sidebar nav a:hover {
    background: rgba(255,255,255,0.1);
}

.sidebar nav a.active {
    background: rgba(255,255,255,0.15);
    border-left-color: var(--primary);
    color: #fff;
}

.main-content {
    margin-left: 220px;
    padding: 24px;
    flex: 1;
    min-height: 100vh;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text);
}

.page-header p {
    color: var(--text-secondary);
    margin-top: 4px;
}

.card {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 24px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    font-size: 14px;
}

.form-group label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(74,144,217,0.2);
}

.form-group textarea {
    min-height: 60px;
    resize: vertical;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: all 0.2s;
}

.radio-group label:hover {
    border-color: var(--primary);
    background: rgba(74,144,217,0.05);
}

.radio-group input[type="radio"] {
    width: auto;
    margin-right: 8px;
}

.radio-group input[type="radio"]:checked + span {
    color: var(--primary);
    font-weight: 500;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-success:hover {
    background: #45a814;
}

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

.btn-large {
    padding: 12px 32px;
    font-size: 16px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.steps {
    display: flex;
    margin-bottom: 30px;
    background: var(--card-bg);
    border-radius: 8px;
    padding: 16px 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.step {
    flex: 1;
    text-align: center;
    padding: 8px;
    position: relative;
    color: var(--text-secondary);
}

.step.active {
    color: var(--primary);
    font-weight: 600;
}

.step.done {
    color: var(--success);
}

.step .step-num {
    display: inline-block;
    width: 28px;
    height: 28px;
    line-height: 28px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-secondary);
    margin-right: 8px;
    font-size: 14px;
}

.step.active .step-num {
    background: var(--primary);
    color: #fff;
}

.step.done .step-num {
    background: var(--success);
    color: #fff;
}

.scoring-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.domain-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.domain-card h4 {
    margin-bottom: 12px;
    color: var(--primary);
}

.domain-card .score-inputs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.domain-card .score-input {
    text-align: center;
}

.domain-card .score-input label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.domain-card .score-input input {
    width: 100%;
    padding: 6px;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 4px;
}

.plan-result {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.plan-result h3 {
    margin: 20px 0 12px;
    color: var(--primary);
}

.plan-result ul {
    padding-left: 20px;
    margin: 8px 0;
}

.plan-result li {
    margin: 4px 0;
    line-height: 1.6;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-box {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

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

.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.alert-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
}

.alert-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #ff4d4f;
}

.alert-warning {
    background: #fffbe6;
    border: 1px solid #ffe58f;
    color: #faad14;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.settings-group {
    margin-bottom: 24px;
}

.settings-group h3 {
    margin-bottom: 12px;
}

.model-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.model-option {
    border: 2px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.model-option:hover {
    border-color: var(--primary);
}

.model-option.selected {
    border-color: var(--primary);
    background: rgba(74,144,217,0.05);
}

.model-option .model-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.model-option .model-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

.drop-zone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 32px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s;
    background: #fafbfc;
    position: relative;
}

.drop-zone:hover {
    border-color: var(--primary);
    background: rgba(74,144,217,0.03);
}

.drop-zone.drag-over {
    border-color: var(--primary);
    background: rgba(74,144,217,0.08);
    box-shadow: 0 0 0 3px rgba(74,144,217,0.15);
}

.drop-zone .drop-icon {
    font-size: 40px;
    margin-bottom: 8px;
}

.drop-zone .drop-text {
    font-size: 15px;
    color: var(--text);
    margin-bottom: 4px;
}

.drop-zone .drop-hint {
    font-size: 12px;
    color: var(--text-secondary);
}

.drop-zone input[type="file"] {
    display: none;
}

.drop-previews {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.drop-previews .preview-item {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.drop-previews .preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.drop-previews .preview-item .remove-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.drop-previews .preview-item .remove-btn:hover {
    background: var(--danger);
}

/* 大图预览模态框 */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.image-modal img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
}

.image-modal .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

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