body {
    background-color: #f5f7fa;
}

.upload-area {
    border: 2px dashed #c0c6cc;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #6c757d;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: #0d6efd;
    background-color: #f0f6ff;
    color: #0d6efd;
}

.upload-icon {
    margin-bottom: 0.5rem;
}

.file-info {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #eef2f7;
    border-radius: 6px;
}

.file-icon {
    font-size: 1.25rem;
}

.radio-group {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.radio-group .form-check {
    padding-left: 1.5rem;
}

.auto-detect-info {
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: #fff3cd;
    border-left: 3px solid #ffc107;
    border-radius: 4px;
    font-size: 0.875rem;
    color: #664d03;
}

.card-title {
    font-weight: 600;
}

#convertBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.success-icon,
.error-icon {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.success-icon {
    color: #198754;
}

.error-icon {
    color: #dc3545;
}

#downloadLink {
    text-decoration: none;
    border: none;
}

#usageInfo {
    min-width: 80px;
    text-align: center;
}

#loginSection .card {
    border: none;
    border-radius: 12px;
}

#reloadConfigBtn {
    white-space: nowrap;
}

/* ===== 登录页面样式 ===== */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.login-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.login-header {
    text-align: center;
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.login-logo {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.login-header h4 {
    font-weight: 600;
}

.login-header .small {
    color: rgba(255, 255, 255, 0.8) !important;
}

.login-body {
    padding: 1.5rem 2rem 2rem;
}

.login-body .form-control-lg {
    border-radius: 8px;
}

.login-body .btn-lg {
    border-radius: 8px;
    font-weight: 600;
    margin-top: 0.5rem;
}

.login-body a {
    color: #6c757d;
    transition: color 0.2s;
}

.login-body a:hover {
    color: #667eea;
}

/* ===== 管理员登录页面样式 ===== */
.admin-login-body {
    background: linear-gradient(135deg, #0f0c29 0%, #1a1a3e 50%, #24243e 100%);
    min-height: 100vh;
}

.admin-login-header {
    text-align: center;
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, #1a1a3e 0%, #2d2d5f 100%);
    color: #fff;
}

.admin-login-header .login-logo {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.admin-login-header h4 {
    font-weight: 600;
}