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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #faf8f5;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 760px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px;
    flex: 1;
}

.card {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.header-card {
    padding: 28px 32px;
}

.header-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.header-row h1 {
    font-size: 36px;
    font-weight: 700;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: #fff0e6;
    color: #ff6b00;
    border: 1px solid #ffd8b8;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.subtitle {
    color: #555;
    font-size: 15px;
    margin-bottom: 8px;
}

.hint {
    color: #888;
    font-size: 13px;
}

.hint strong {
    color: #ff6b00;
}

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

.form-group label {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 15px;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff6b00;
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.field-hint {
    margin-top: 8px;
    font-size: 13px;
    color: #888;
}

.field-hint.warning {
    color: #ff4d4f;
}

.upload-area {
    border: 2px dashed #e0e0e0;
    border-radius: 12px;
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
}

.upload-area:hover {
    border-color: #ff6b00;
    background: #fffaf5;
}

.upload-area input[type="file"] {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
}

.upload-area .upload-text,
.upload-area .upload-hint,
.upload-area .file-list {
    position: relative;
    z-index: 5;
    pointer-events: none;
}

.upload-text {
    display: inline-block;
    padding: 8px 20px;
    background: #f5f5f5;
    border-radius: 20px;
    font-size: 14px;
    color: #333;
    margin-bottom: 12px;
}

.upload-hint {
    font-size: 13px;
    color: #999;
    line-height: 1.6;
}

.file-list {
    margin-top: 16px;
    text-align: left;
}

.file-item {
    padding: 8px 12px;
    background: #f8f8f8;
    border-radius: 6px;
    font-size: 13px;
    color: #555;
    margin-bottom: 6px;
}

.submit-btn {
    width: 100%;
    padding: 14px 24px;
    background: #ff6b00;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.submit-btn:hover {
    background: #e66000;
}

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

.submit-btn:disabled {
    background: #ffb380;
    cursor: not-allowed;
}

.success-card,
.error-card {
    text-align: center;
    padding: 50px 30px;
}

.success-icon,
.error-icon {
    width: 64px;
    height: 64px;
    line-height: 64px;
    border-radius: 50%;
    font-size: 28px;
    margin: 0 auto 20px;
    color: #fff;
}

.success-icon {
    background: #52c41a;
}

.error-icon {
    background: #ff4d4f;
}

.info-box {
    background: #f8f8f8;
    border-radius: 10px;
    padding: 20px;
    margin: 24px 0;
    text-align: left;
}

.info-box p {
    margin-bottom: 8px;
    color: #555;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.back-link {
    display: inline-block;
    margin-top: 24px;
    color: #ff6b00;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.footer {
    text-align: center;
    padding: 20px;
    color: #aaa;
    font-size: 13px;
}

/* Admin */
.admin-card h1 {
    font-size: 28px;
    margin-bottom: 24px;
}

.admin-card h2 {
    font-size: 20px;
    margin: 32px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-item {
    background: #fafafa;
    border-radius: 10px;
    padding: 16px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: #ff6b00;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: #888;
    margin-top: 4px;
}

.admin-form .form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

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

.admin-form .submit-btn {
    width: auto;
    padding: 10px 28px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-top: 12px;
    overflow-x: auto;
    display: block;
}

.data-table thead {
    background: #fafafa;
}

.data-table th,
.data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
    white-space: nowrap;
}

.data-table th {
    font-weight: 600;
    color: #555;
}

.code-cell {
    font-family: monospace;
    font-weight: 600;
    color: #ff6b00;
}

.link-cell {
    color: #666;
    max-width: 240px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.error-cell {
    color: #ff4d4f;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (max-width: 600px) {
    .container {
        padding: 20px 16px;
    }
    
    .card {
        padding: 24px 20px;
    }
    
    .header-row h1 {
        font-size: 28px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Skill selection */
.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 12px;
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 12px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
    background: #fff;
}

.skill-card:hover {
    border-color: #ff6b00;
    background: #fffaf5;
}

.skill-card input {
    display: none;
}

.skill-card input:checked + .skill-icon,
.skill-card input:checked ~ .skill-name {
    color: #ff6b00;
}

.skill-card:has(input:checked) {
    border-color: #ff6b00;
    background: #fff5eb;
}

.skill-icon {
    font-size: 28px;
    margin-bottom: 6px;
}

.skill-name {
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

/* Success page */
.success-card {
    text-align: center;
    padding: 50px 30px;
}

.success-icon {
    width: 64px;
    height: 64px;
    line-height: 64px;
    border-radius: 50%;
    font-size: 28px;
    margin: 0 auto 20px;
    color: #fff;
    background: #52c41a;
}

.info-box {
    background: #f8f8f8;
    border-radius: 10px;
    padding: 20px;
    margin: 24px 0;
    text-align: left;
}

.info-box p {
    margin-bottom: 8px;
    color: #555;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.action-buttons {
    margin-top: 24px;
}

.link-cell-full {
    font-family: monospace;
    font-size: 13px;
    color: #666;
    word-break: break-all;
    max-width: 320px;
}